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+/**
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+ * Copyright © 2012-2016 <a href="https://github.com/thinkgem/jeesite">JeeSite</a> All rights reserved.
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+ */
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+package cn.com.liandisys.ycjt.ggcx.common.util;
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+
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+import java.io.BufferedOutputStream;
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+import java.io.File;
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+import java.io.FileInputStream;
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+import java.io.FileOutputStream;
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+import java.io.IOException;
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+import java.io.InputStream;
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+import java.io.OutputStream;
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+import java.io.RandomAccessFile;
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+import java.util.Enumeration;
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+import java.util.List;
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+
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+import javax.servlet.http.HttpServletRequest;
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+import javax.servlet.http.HttpServletResponse;
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+
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+import org.apache.tools.zip.ZipEntry;
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+import org.apache.tools.zip.ZipFile;
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+import org.apache.tools.zip.ZipOutputStream;
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+import org.slf4j.Logger;
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+import org.slf4j.LoggerFactory;
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+
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+import com.google.common.collect.Lists;
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+
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+/**
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+ * 文件操作工具类
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+ * 实现文件的创建、删除、复制、压缩、解压以及目录的创建、删除、复制、压缩解压等功能
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+ * @author ThinkGem
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+ * @version 2015-3-16
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+ */
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+public class FileUtils extends org.apache.commons.io.FileUtils {
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+
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+ private static Logger logger = LoggerFactory.getLogger(FileUtils.class);
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+
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+ /**
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+ * 复制单个文件,如果目标文件存在,则不覆盖
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+ * @param srcFileName 待复制的文件名
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+ * @param descFileName 目标文件名
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+ * @return 如果复制成功,则返回true,否则返回false
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+ */
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+ public static boolean copyFile(String srcFileName, String descFileName) {
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+ return FileUtils.copyFileCover(srcFileName, descFileName, false);
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+ }
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+
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+ /**
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+ * 复制单个文件
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+ * @param srcFileName 待复制的文件名
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+ * @param descFileName 目标文件名
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+ * @param coverlay 如果目标文件已存在,是否覆盖
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+ * @return 如果复制成功,则返回true,否则返回false
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+ */
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+ public static boolean copyFileCover(String srcFileName,
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+ String descFileName, boolean coverlay) {
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+ File srcFile = new File(srcFileName);
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+ // 判断源文件是否存在
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+ if (!srcFile.exists()) {
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+ logger.debug("复制文件失败,源文件 " + srcFileName + " 不存在!");
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+ return false;
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+ }
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+ // 判断源文件是否是合法的文件
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+ else if (!srcFile.isFile()) {
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+ logger.debug("复制文件失败," + srcFileName + " 不是一个文件!");
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+ return false;
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+ }
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+ File descFile = new File(descFileName);
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+ // 判断目标文件是否存在
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+ if (descFile.exists()) {
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+ // 如果目标文件存在,并且允许覆盖
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+ if (coverlay) {
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+ logger.debug("目标文件已存在,准备删除!");
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+ if (!FileUtils.delFile(descFileName)) {
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+ logger.debug("删除目标文件 " + descFileName + " 失败!");
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+ return false;
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+ }
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+ } else {
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+ logger.debug("复制文件失败,目标文件 " + descFileName + " 已存在!");
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+ return false;
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+ }
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+ } else {
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+ if (!descFile.getParentFile().exists()) {
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+ // 如果目标文件所在的目录不存在,则创建目录
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+ logger.debug("目标文件所在的目录不存在,创建目录!");
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+ // 创建目标文件所在的目录
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+ if (!descFile.getParentFile().mkdirs()) {
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+ logger.debug("创建目标文件所在的目录失败!");
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+ return false;
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+ }
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+ }
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+ }
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+
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+ // 准备复制文件
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+ // 读取的位数
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+ int readByte = 0;
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+ InputStream ins = null;
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+ OutputStream outs = null;
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+ try {
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+ // 打开源文件
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+ ins = new FileInputStream(srcFile);
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+ // 打开目标文件的输出流
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+ outs = new FileOutputStream(descFile);
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+ byte[] buf = new byte[1024];
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+ // 一次读取1024个字节,当readByte为-1时表示文件已经读取完毕
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+ while ((readByte = ins.read(buf)) != -1) {
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+ // 将读取的字节流写入到输出流
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+ outs.write(buf, 0, readByte);
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+ }
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+ logger.debug("复制单个文件 " + srcFileName + " 到" + descFileName
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+ + "成功!");
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+ return true;
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+ } catch (Exception e) {
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+ logger.debug("复制文件失败:" + e.getMessage());
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+ return false;
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+ } finally {
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+ // 关闭输入输出流,首先关闭输出流,然后再关闭输入流
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+ if (outs != null) {
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+ try {
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+ outs.close();
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+ } catch (IOException oute) {
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+ oute.printStackTrace();
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+ }
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+ }
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+ if (ins != null) {
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+ try {
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+ ins.close();
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+ } catch (IOException ine) {
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+ ine.printStackTrace();
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+ }
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+ }
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+ }
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+ }
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+
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+ /**
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+ * 复制整个目录的内容,如果目标目录存在,则不覆盖
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+ * @param srcDirName 源目录名
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+ * @param descDirName 目标目录名
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+ * @return 如果复制成功返回true,否则返回false
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+ */
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+ public static boolean copyDirectory(String srcDirName, String descDirName) {
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+ return FileUtils.copyDirectoryCover(srcDirName, descDirName,
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+ false);
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+ }
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+
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+ /**
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+ * 复制整个目录的内容
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+ * @param srcDirName 源目录名
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+ * @param descDirName 目标目录名
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+ * @param coverlay 如果目标目录存在,是否覆盖
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+ * @return 如果复制成功返回true,否则返回false
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+ */
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+ public static boolean copyDirectoryCover(String srcDirName,
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+ String descDirName, boolean coverlay) {
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+ File srcDir = new File(srcDirName);
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+ // 判断源目录是否存在
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+ if (!srcDir.exists()) {
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+ logger.debug("复制目录失败,源目录 " + srcDirName + " 不存在!");
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+ return false;
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+ }
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+ // 判断源目录是否是目录
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+ else if (!srcDir.isDirectory()) {
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+ logger.debug("复制目录失败," + srcDirName + " 不是一个目录!");
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+ return false;
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+ }
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+ // 如果目标文件夹名不以文件分隔符结尾,自动添加文件分隔符
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+ String descDirNames = descDirName;
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+ if (!descDirNames.endsWith(File.separator)) {
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+ descDirNames = descDirNames + File.separator;
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+ }
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+ File descDir = new File(descDirNames);
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+ // 如果目标文件夹存在
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+ if (descDir.exists()) {
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+ if (coverlay) {
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+ // 允许覆盖目标目录
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+ logger.debug("目标目录已存在,准备删除!");
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+ if (!FileUtils.delFile(descDirNames)) {
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+ logger.debug("删除目录 " + descDirNames + " 失败!");
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+ return false;
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+ }
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+ } else {
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+ logger.debug("目标目录复制失败,目标目录 " + descDirNames + " 已存在!");
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+ return false;
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+ }
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+ } else {
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+ // 创建目标目录
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+ logger.debug("目标目录不存在,准备创建!");
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+ if (!descDir.mkdirs()) {
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+ logger.debug("创建目标目录失败!");
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+ return false;
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+ }
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+
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+ }
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+
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+ boolean flag = true;
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+ // 列出源目录下的所有文件名和子目录名
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+ File[] files = srcDir.listFiles();
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+ for (int i = 0; i < files.length; i++) {
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+ // 如果是一个单个文件,则直接复制
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+ if (files[i].isFile()) {
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+ flag = FileUtils.copyFile(files[i].getAbsolutePath(),
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+ descDirName + files[i].getName());
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+ // 如果拷贝文件失败,则退出循环
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+ if (!flag) {
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+ break;
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+ }
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+ }
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+ // 如果是子目录,则继续复制目录
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+ if (files[i].isDirectory()) {
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+ flag = FileUtils.copyDirectory(files[i]
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+ .getAbsolutePath(), descDirName + files[i].getName());
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+ // 如果拷贝目录失败,则退出循环
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+ if (!flag) {
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+ break;
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+ }
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+ }
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+ }
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+
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+ if (!flag) {
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+ logger.debug("复制目录 " + srcDirName + " 到 " + descDirName + " 失败!");
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+ return false;
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+ }
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+ logger.debug("复制目录 " + srcDirName + " 到 " + descDirName + " 成功!");
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+ return true;
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+
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+ }
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+
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+ /**
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+ *
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+ * 删除文件,可以删除单个文件或文件夹
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+ *
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+ * @param fileName 被删除的文件名
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+ * @return 如果删除成功,则返回true,否是返回false
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+ */
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+ public static boolean delFile(String fileName) {
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+ File file = new File(fileName);
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+ if (!file.exists()) {
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+ logger.debug(fileName + " 文件不存在!");
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+ return true;
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+ } else {
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+ if (file.isFile()) {
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+ return FileUtils.deleteFile(fileName);
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+ } else {
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+ return FileUtils.deleteDirectory(fileName);
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+ }
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+ }
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+ }
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+
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+ /**
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+ *
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+ * 删除单个文件
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+ *
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+ * @param fileName 被删除的文件名
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+ * @return 如果删除成功,则返回true,否则返回false
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+ */
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+ public static boolean deleteFile(String fileName) {
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+ File file = new File(fileName);
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+ if (file.exists() && file.isFile()) {
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+ if (file.delete()) {
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+ logger.debug("删除文件 " + fileName + " 成功!");
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+ return true;
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+ } else {
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+ logger.debug("删除文件 " + fileName + " 失败!");
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+ return false;
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+ }
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+ } else {
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+ logger.debug(fileName + " 文件不存在!");
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+ return true;
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+ }
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+ }
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+
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+ /**
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+ *
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+ * 删除目录及目录下的文件
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+ *
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+ * @param dirName 被删除的目录所在的文件路径
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+ * @return 如果目录删除成功,则返回true,否则返回false
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+ */
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+ public static boolean deleteDirectory(String dirName) {
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+ String dirNames = dirName;
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+ if (!dirNames.endsWith(File.separator)) {
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+ dirNames = dirNames + File.separator;
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+ }
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+ File dirFile = new File(dirNames);
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+ if (!dirFile.exists() || !dirFile.isDirectory()) {
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+ logger.debug(dirNames + " 目录不存在!");
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+ return true;
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+ }
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+ boolean flag = true;
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+ // 列出全部文件及子目录
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+ File[] files = dirFile.listFiles();
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+ for (int i = 0; i < files.length; i++) {
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+ // 删除子文件
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+ if (files[i].isFile()) {
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+ flag = FileUtils.deleteFile(files[i].getAbsolutePath());
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+ // 如果删除文件失败,则退出循环
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+ if (!flag) {
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+ break;
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+ }
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+ }
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+ // 删除子目录
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+ else if (files[i].isDirectory()) {
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+ flag = FileUtils.deleteDirectory(files[i]
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+ .getAbsolutePath());
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+ // 如果删除子目录失败,则退出循环
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+ if (!flag) {
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+ break;
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+ }
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+ }
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+ }
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+
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+ if (!flag) {
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+ logger.debug("删除目录失败!");
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+ return false;
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+ }
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+ // 删除当前目录
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+ if (dirFile.delete()) {
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+ logger.debug("删除目录 " + dirName + " 成功!");
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+ return true;
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+ } else {
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+ logger.debug("删除目录 " + dirName + " 失败!");
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+ return false;
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+ }
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+
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+ }
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+
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+ /**
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+ * 创建单个文件
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+ * @param descFileName 文件名,包含路径
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+ * @return 如果创建成功,则返回true,否则返回false
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+ */
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+ public static boolean createFile(String descFileName) {
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+ File file = new File(descFileName);
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+ if (file.exists()) {
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+ logger.debug("文件 " + descFileName + " 已存在!");
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+ return false;
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+ }
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+ if (descFileName.endsWith(File.separator)) {
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+ logger.debug(descFileName + " 为目录,不能创建目录!");
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+ return false;
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+ }
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+ if (!file.getParentFile().exists()) {
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+ // 如果文件所在的目录不存在,则创建目录
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+ if (!file.getParentFile().mkdirs()) {
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+ logger.debug("创建文件所在的目录失败!");
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+ return false;
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+ }
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+ }
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+
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+ // 创建文件
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+ try {
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+ if (file.createNewFile()) {
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+ logger.debug(descFileName + " 文件创建成功!");
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+ return true;
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+ } else {
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+ logger.debug(descFileName + " 文件创建失败!");
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+ return false;
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+ }
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ logger.debug(descFileName + " 文件创建失败!");
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+ return false;
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+ }
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+
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+ }
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+
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+ /**
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+ * 创建目录
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+ * @param descDirName 目录名,包含路径
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+ * @return 如果创建成功,则返回true,否则返回false
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+ */
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+ public static boolean createDirectory(String descDirName) {
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+ String descDirNames = descDirName;
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+ if (!descDirNames.endsWith(File.separator)) {
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+ descDirNames = descDirNames + File.separator;
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+ }
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+ File descDir = new File(descDirNames);
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+ if (descDir.exists()) {
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+ logger.debug("目录 " + descDirNames + " 已存在!");
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+ return false;
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+ }
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+ // 创建目录
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+ if (descDir.mkdirs()) {
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+ logger.debug("目录 " + descDirNames + " 创建成功!");
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+ return true;
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+ } else {
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+ logger.debug("目录 " + descDirNames + " 创建失败!");
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+ return false;
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+ }
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+
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+ }
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+
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+ /**
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|
|
+ * 写入文件
|
|
|
+ * @param file 要写入的文件
|
|
|
+ */
|
|
|
+ public static void writeToFile(String fileName, String content, boolean append) {
|
|
|
+ try {
|
|
|
+ FileUtils.write(new File(fileName), content, "utf-8", append);
|
|
|
+ logger.debug("文件 " + fileName + " 写入成功!");
|
|
|
+ } catch (IOException e) {
|
|
|
+ logger.debug("文件 " + fileName + " 写入失败! " + e.getMessage());
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 写入文件
|
|
|
+ * @param file 要写入的文件
|
|
|
+ */
|
|
|
+ public static void writeToFile(String fileName, String content, String encoding, boolean append) {
|
|
|
+ try {
|
|
|
+ FileUtils.write(new File(fileName), content, encoding, append);
|
|
|
+ logger.debug("文件 " + fileName + " 写入成功!");
|
|
|
+ } catch (IOException e) {
|
|
|
+ logger.debug("文件 " + fileName + " 写入失败! " + e.getMessage());
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 压缩文件或目录
|
|
|
+ * @param srcDirName 压缩的根目录
|
|
|
+ * @param fileName 根目录下的待压缩的文件名或文件夹名,其中*或""表示跟目录下的全部文件
|
|
|
+ * @param descFileName 目标zip文件
|
|
|
+ */
|
|
|
+ public static void zipFiles(String srcDirName, String fileName,
|
|
|
+ String descFileName) {
|
|
|
+ // 判断目录是否存在
|
|
|
+ if (srcDirName == null) {
|
|
|
+ logger.debug("文件压缩失败,目录 " + srcDirName + " 不存在!");
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ File fileDir = new File(srcDirName);
|
|
|
+ if (!fileDir.exists() || !fileDir.isDirectory()) {
|
|
|
+ logger.debug("文件压缩失败,目录 " + srcDirName + " 不存在!");
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ String dirPath = fileDir.getAbsolutePath();
|
|
|
+ File descFile = new File(descFileName);
|
|
|
+ try {
|
|
|
+ ZipOutputStream zouts = new ZipOutputStream(new FileOutputStream(
|
|
|
+ descFile));
|
|
|
+ if ("*".equals(fileName) || "".equals(fileName)) {
|
|
|
+ FileUtils.zipDirectoryToZipFile(dirPath, fileDir, zouts);
|
|
|
+ } else {
|
|
|
+ File file = new File(fileDir, fileName);
|
|
|
+ if (file.isFile()) {
|
|
|
+ FileUtils.zipFilesToZipFile(dirPath, file, zouts);
|
|
|
+ } else {
|
|
|
+ FileUtils
|
|
|
+ .zipDirectoryToZipFile(dirPath, file, zouts);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ zouts.close();
|
|
|
+ logger.debug(descFileName + " 文件压缩成功!");
|
|
|
+ } catch (Exception e) {
|
|
|
+ logger.debug("文件压缩失败:" + e.getMessage());
|
|
|
+ e.printStackTrace();
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 解压缩ZIP文件,将ZIP文件里的内容解压到descFileName目录下
|
|
|
+ * @param zipFileName 需要解压的ZIP文件
|
|
|
+ * @param descFileName 目标文件
|
|
|
+ */
|
|
|
+ public static boolean unZipFiles(String zipFileName, String descFileName) {
|
|
|
+ String descFileNames = descFileName;
|
|
|
+ if (!descFileNames.endsWith(File.separator)) {
|
|
|
+ descFileNames = descFileNames + File.separator;
|
|
|
+ }
|
|
|
+ try {
|
|
|
+ // 根据ZIP文件创建ZipFile对象
|
|
|
+ ZipFile zipFile = new ZipFile(zipFileName);
|
|
|
+ ZipEntry entry = null;
|
|
|
+ String entryName = null;
|
|
|
+ String descFileDir = null;
|
|
|
+ byte[] buf = new byte[4096];
|
|
|
+ int readByte = 0;
|
|
|
+ // 获取ZIP文件里所有的entry
|
|
|
+ @SuppressWarnings("rawtypes")
|
|
|
+ Enumeration enums = zipFile.getEntries();
|
|
|
+ // 遍历所有entry
|
|
|
+ while (enums.hasMoreElements()) {
|
|
|
+ entry = (ZipEntry) enums.nextElement();
|
|
|
+ // 获得entry的名字
|
|
|
+ entryName = entry.getName();
|
|
|
+ descFileDir = descFileNames + entryName;
|
|
|
+ if (entry.isDirectory()) {
|
|
|
+ // 如果entry是一个目录,则创建目录
|
|
|
+ new File(descFileDir).mkdirs();
|
|
|
+ continue;
|
|
|
+ } else {
|
|
|
+ // 如果entry是一个文件,则创建父目录
|
|
|
+ new File(descFileDir).getParentFile().mkdirs();
|
|
|
+ }
|
|
|
+ File file = new File(descFileDir);
|
|
|
+ // 打开文件输出流
|
|
|
+ OutputStream os = new FileOutputStream(file);
|
|
|
+ // 从ZipFile对象中打开entry的输入流
|
|
|
+ InputStream is = zipFile.getInputStream(entry);
|
|
|
+ while ((readByte = is.read(buf)) != -1) {
|
|
|
+ os.write(buf, 0, readByte);
|
|
|
+ }
|
|
|
+ os.close();
|
|
|
+ is.close();
|
|
|
+ }
|
|
|
+ zipFile.close();
|
|
|
+ logger.debug("文件解压成功!");
|
|
|
+ return true;
|
|
|
+ } catch (Exception e) {
|
|
|
+ logger.debug("文件解压失败:" + e.getMessage());
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 将目录压缩到ZIP输出流
|
|
|
+ * @param dirPath 目录路径
|
|
|
+ * @param fileDir 文件信息
|
|
|
+ * @param zouts 输出流
|
|
|
+ */
|
|
|
+ public static void zipDirectoryToZipFile(String dirPath, File fileDir, ZipOutputStream zouts) {
|
|
|
+ if (fileDir.isDirectory()) {
|
|
|
+ File[] files = fileDir.listFiles();
|
|
|
+ // 空的文件夹
|
|
|
+ if (files.length == 0) {
|
|
|
+ // 目录信息
|
|
|
+ ZipEntry entry = new ZipEntry(getEntryName(dirPath, fileDir));
|
|
|
+ try {
|
|
|
+ zouts.putNextEntry(entry);
|
|
|
+ zouts.closeEntry();
|
|
|
+ } catch (Exception e) {
|
|
|
+ e.printStackTrace();
|
|
|
+ }
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ for (int i = 0; i < files.length; i++) {
|
|
|
+ if (files[i].isFile()) {
|
|
|
+ // 如果是文件,则调用文件压缩方法
|
|
|
+ FileUtils
|
|
|
+ .zipFilesToZipFile(dirPath, files[i], zouts);
|
|
|
+ } else {
|
|
|
+ // 如果是目录,则递归调用
|
|
|
+ FileUtils.zipDirectoryToZipFile(dirPath, files[i],
|
|
|
+ zouts);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 将文件压缩到ZIP输出流
|
|
|
+ * @param dirPath 目录路径
|
|
|
+ * @param file 文件
|
|
|
+ * @param zouts 输出流
|
|
|
+ */
|
|
|
+ public static void zipFilesToZipFile(String dirPath, File file, ZipOutputStream zouts) {
|
|
|
+ FileInputStream fin = null;
|
|
|
+ ZipEntry entry = null;
|
|
|
+ // 创建复制缓冲区
|
|
|
+ byte[] buf = new byte[4096];
|
|
|
+ int readByte = 0;
|
|
|
+ if (file.isFile()) {
|
|
|
+ try {
|
|
|
+ // 创建一个文件输入流
|
|
|
+ fin = new FileInputStream(file);
|
|
|
+ // 创建一个ZipEntry
|
|
|
+ entry = new ZipEntry(getEntryName(dirPath, file));
|
|
|
+ // 存储信息到压缩文件
|
|
|
+ zouts.putNextEntry(entry);
|
|
|
+ // 复制字节到压缩文件
|
|
|
+ while ((readByte = fin.read(buf)) != -1) {
|
|
|
+ zouts.write(buf, 0, readByte);
|
|
|
+ }
|
|
|
+ zouts.closeEntry();
|
|
|
+ fin.close();
|
|
|
+ System.out
|
|
|
+ .println("添加文件 " + file.getAbsolutePath() + " 到zip文件中!");
|
|
|
+ } catch (Exception e) {
|
|
|
+ e.printStackTrace();
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 获取待压缩文件在ZIP文件中entry的名字,即相对于跟目录的相对路径名
|
|
|
+ * @param dirPat 目录名
|
|
|
+ * @param file entry文件名
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ private static String getEntryName(String dirPath, File file) {
|
|
|
+ String dirPaths = dirPath;
|
|
|
+ if (!dirPaths.endsWith(File.separator)) {
|
|
|
+ dirPaths = dirPaths + File.separator;
|
|
|
+ }
|
|
|
+ String filePath = file.getAbsolutePath();
|
|
|
+ // 对于目录,必须在entry名字后面加上"/",表示它将以目录项存储
|
|
|
+ if (file.isDirectory()) {
|
|
|
+ filePath += "/";
|
|
|
+ }
|
|
|
+ int index = filePath.indexOf(dirPaths);
|
|
|
+
|
|
|
+ return filePath.substring(index + dirPaths.length());
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 根据“文件名的后缀”获取文件内容类型(而非根据File.getContentType()读取的文件类型)
|
|
|
+ * @param returnFileName 带验证的文件名
|
|
|
+ * @return 返回文件类型
|
|
|
+ */
|
|
|
+ public static String getContentType(String returnFileName) {
|
|
|
+ String contentType = "application/octet-stream";
|
|
|
+ if (returnFileName.lastIndexOf(".") < 0)
|
|
|
+ return contentType;
|
|
|
+ returnFileName = returnFileName.toLowerCase();
|
|
|
+ returnFileName = returnFileName.substring(returnFileName.lastIndexOf(".") + 1);
|
|
|
+ if (returnFileName.equals("html") || returnFileName.equals("htm") || returnFileName.equals("shtml")) {
|
|
|
+ contentType = "text/html";
|
|
|
+ } else if (returnFileName.equals("apk")) {
|
|
|
+ contentType = "application/vnd.android.package-archive";
|
|
|
+ } else if (returnFileName.equals("sis")) {
|
|
|
+ contentType = "application/vnd.symbian.install";
|
|
|
+ } else if (returnFileName.equals("sisx")) {
|
|
|
+ contentType = "application/vnd.symbian.install";
|
|
|
+ } else if (returnFileName.equals("exe")) {
|
|
|
+ contentType = "application/x-msdownload";
|
|
|
+ } else if (returnFileName.equals("msi")) {
|
|
|
+ contentType = "application/x-msdownload";
|
|
|
+ } else if (returnFileName.equals("css")) {
|
|
|
+ contentType = "text/css";
|
|
|
+ } else if (returnFileName.equals("xml")) {
|
|
|
+ contentType = "text/xml";
|
|
|
+ } else if (returnFileName.equals("gif")) {
|
|
|
+ contentType = "image/gif";
|
|
|
+ } else if (returnFileName.equals("jpeg") || returnFileName.equals("jpg")) {
|
|
|
+ contentType = "image/jpeg";
|
|
|
+ } else if (returnFileName.equals("js")) {
|
|
|
+ contentType = "application/x-javascript";
|
|
|
+ } else if (returnFileName.equals("atom")) {
|
|
|
+ contentType = "application/atom+xml";
|
|
|
+ } else if (returnFileName.equals("rss")) {
|
|
|
+ contentType = "application/rss+xml";
|
|
|
+ } else if (returnFileName.equals("mml")) {
|
|
|
+ contentType = "text/mathml";
|
|
|
+ } else if (returnFileName.equals("txt")) {
|
|
|
+ contentType = "text/plain";
|
|
|
+ } else if (returnFileName.equals("jad")) {
|
|
|
+ contentType = "text/vnd.sun.j2me.app-descriptor";
|
|
|
+ } else if (returnFileName.equals("wml")) {
|
|
|
+ contentType = "text/vnd.wap.wml";
|
|
|
+ } else if (returnFileName.equals("htc")) {
|
|
|
+ contentType = "text/x-component";
|
|
|
+ } else if (returnFileName.equals("png")) {
|
|
|
+ contentType = "image/png";
|
|
|
+ } else if (returnFileName.equals("tif") || returnFileName.equals("tiff")) {
|
|
|
+ contentType = "image/tiff";
|
|
|
+ } else if (returnFileName.equals("wbmp")) {
|
|
|
+ contentType = "image/vnd.wap.wbmp";
|
|
|
+ } else if (returnFileName.equals("ico")) {
|
|
|
+ contentType = "image/x-icon";
|
|
|
+ } else if (returnFileName.equals("jng")) {
|
|
|
+ contentType = "image/x-jng";
|
|
|
+ } else if (returnFileName.equals("bmp")) {
|
|
|
+ contentType = "image/x-ms-bmp";
|
|
|
+ } else if (returnFileName.equals("svg")) {
|
|
|
+ contentType = "image/svg+xml";
|
|
|
+ } else if (returnFileName.equals("jar") || returnFileName.equals("var")
|
|
|
+ || returnFileName.equals("ear")) {
|
|
|
+ contentType = "application/java-archive";
|
|
|
+ } else if (returnFileName.equals("doc")) {
|
|
|
+ contentType = "application/msword";
|
|
|
+ } else if (returnFileName.equals("pdf")) {
|
|
|
+ contentType = "application/pdf";
|
|
|
+ } else if (returnFileName.equals("rtf")) {
|
|
|
+ contentType = "application/rtf";
|
|
|
+ } else if (returnFileName.equals("xls")) {
|
|
|
+ contentType = "application/vnd.ms-excel";
|
|
|
+ } else if (returnFileName.equals("ppt")) {
|
|
|
+ contentType = "application/vnd.ms-powerpoint";
|
|
|
+ } else if (returnFileName.equals("7z")) {
|
|
|
+ contentType = "application/x-7z-compressed";
|
|
|
+ } else if (returnFileName.equals("rar")) {
|
|
|
+ contentType = "application/x-rar-compressed";
|
|
|
+ } else if (returnFileName.equals("swf")) {
|
|
|
+ contentType = "application/x-shockwave-flash";
|
|
|
+ } else if (returnFileName.equals("rpm")) {
|
|
|
+ contentType = "application/x-redhat-package-manager";
|
|
|
+ } else if (returnFileName.equals("der") || returnFileName.equals("pem")
|
|
|
+ || returnFileName.equals("crt")) {
|
|
|
+ contentType = "application/x-x509-ca-cert";
|
|
|
+ } else if (returnFileName.equals("xhtml")) {
|
|
|
+ contentType = "application/xhtml+xml";
|
|
|
+ } else if (returnFileName.equals("zip")) {
|
|
|
+ contentType = "application/zip";
|
|
|
+ } else if (returnFileName.equals("mid") || returnFileName.equals("midi")
|
|
|
+ || returnFileName.equals("kar")) {
|
|
|
+ contentType = "audio/midi";
|
|
|
+ } else if (returnFileName.equals("mp3")) {
|
|
|
+ contentType = "audio/mpeg";
|
|
|
+ } else if (returnFileName.equals("ogg")) {
|
|
|
+ contentType = "audio/ogg";
|
|
|
+ } else if (returnFileName.equals("m4a")) {
|
|
|
+ contentType = "audio/x-m4a";
|
|
|
+ } else if (returnFileName.equals("ra")) {
|
|
|
+ contentType = "audio/x-realaudio";
|
|
|
+ } else if (returnFileName.equals("3gpp")
|
|
|
+ || returnFileName.equals("3gp")) {
|
|
|
+ contentType = "video/3gpp";
|
|
|
+ } else if (returnFileName.equals("mp4")) {
|
|
|
+ contentType = "video/mp4";
|
|
|
+ } else if (returnFileName.equals("mpeg")
|
|
|
+ || returnFileName.equals("mpg")) {
|
|
|
+ contentType = "video/mpeg";
|
|
|
+ } else if (returnFileName.equals("mov")) {
|
|
|
+ contentType = "video/quicktime";
|
|
|
+ } else if (returnFileName.equals("flv")) {
|
|
|
+ contentType = "video/x-flv";
|
|
|
+ } else if (returnFileName.equals("m4v")) {
|
|
|
+ contentType = "video/x-m4v";
|
|
|
+ } else if (returnFileName.equals("mng")) {
|
|
|
+ contentType = "video/x-mng";
|
|
|
+ } else if (returnFileName.equals("asx") || returnFileName.equals("asf")) {
|
|
|
+ contentType = "video/x-ms-asf";
|
|
|
+ } else if (returnFileName.equals("wmv")) {
|
|
|
+ contentType = "video/x-ms-wmv";
|
|
|
+ } else if (returnFileName.equals("avi")) {
|
|
|
+ contentType = "video/x-msvideo";
|
|
|
+ }
|
|
|
+ return contentType;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 向浏览器发送文件下载,支持断点续传
|
|
|
+ * @param file 要下载的文件
|
|
|
+ * @param request 请求对象
|
|
|
+ * @param response 响应对象
|
|
|
+ * @return 返回错误信息,无错误信息返回null
|
|
|
+ */
|
|
|
+ public static String downFile(File file, HttpServletRequest request, HttpServletResponse response){
|
|
|
+ return downFile(file, request, response, null);
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 向浏览器发送文件下载,支持断点续传
|
|
|
+ * @param file 要下载的文件
|
|
|
+ * @param request 请求对象
|
|
|
+ * @param response 响应对象
|
|
|
+ * @param fileName 指定下载的文件名
|
|
|
+ * @return 返回错误信息,无错误信息返回null
|
|
|
+ */
|
|
|
+ public static String downFile(File file, HttpServletRequest request, HttpServletResponse response, String fileName){
|
|
|
+ String error = null;
|
|
|
+ if (file != null && file.exists()) {
|
|
|
+ if (file.isFile()) {
|
|
|
+ if (file.length() <= 0) {
|
|
|
+ error = "该文件是一个空文件。";
|
|
|
+ }
|
|
|
+ if (!file.canRead()) {
|
|
|
+ error = "该文件没有读取权限。";
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ error = "该文件是一个文件夹。";
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ error = "文件已丢失或不存在!";
|
|
|
+ }
|
|
|
+ if (error != null){
|
|
|
+ logger.debug("---------------" + file + " " + error);
|
|
|
+ return error;
|
|
|
+ }
|
|
|
+
|
|
|
+ long fileLength = file.length(); // 记录文件大小
|
|
|
+ long pastLength = 0; // 记录已下载文件大小
|
|
|
+ int rangeSwitch = 0; // 0:从头开始的全文下载;1:从某字节开始的下载(bytes=27000-);2:从某字节开始到某字节结束的下载(bytes=27000-39000)
|
|
|
+ long toLength = 0; // 记录客户端需要下载的字节段的最后一个字节偏移量(比如bytes=27000-39000,则这个值是为39000)
|
|
|
+ long contentLength = 0; // 客户端请求的字节总量
|
|
|
+ String rangeBytes = ""; // 记录客户端传来的形如“bytes=27000-”或者“bytes=27000-39000”的内容
|
|
|
+ RandomAccessFile raf = null; // 负责读取数据
|
|
|
+ OutputStream os = null; // 写出数据
|
|
|
+ OutputStream out = null; // 缓冲
|
|
|
+ byte b[] = new byte[1024]; // 暂存容器
|
|
|
+
|
|
|
+ if (request.getHeader("Range") != null) { // 客户端请求的下载的文件块的开始字节
|
|
|
+ response.setStatus(javax.servlet.http.HttpServletResponse.SC_PARTIAL_CONTENT);
|
|
|
+ logger.debug("request.getHeader(\"Range\") = " + request.getHeader("Range"));
|
|
|
+ rangeBytes = request.getHeader("Range").replaceAll("bytes=", "");
|
|
|
+ if (rangeBytes.indexOf('-') == rangeBytes.length() - 1) {// bytes=969998336-
|
|
|
+ rangeSwitch = 1;
|
|
|
+ rangeBytes = rangeBytes.substring(0, rangeBytes.indexOf('-'));
|
|
|
+ pastLength = Long.parseLong(rangeBytes.trim());
|
|
|
+ contentLength = fileLength - pastLength; // 客户端请求的是 969998336 之后的字节
|
|
|
+ } else { // bytes=1275856879-1275877358
|
|
|
+ rangeSwitch = 2;
|
|
|
+ String temp0 = rangeBytes.substring(0, rangeBytes.indexOf('-'));
|
|
|
+ String temp2 = rangeBytes.substring(rangeBytes.indexOf('-') + 1, rangeBytes.length());
|
|
|
+ pastLength = Long.parseLong(temp0.trim()); // bytes=1275856879-1275877358,从第 1275856879 个字节开始下载
|
|
|
+ toLength = Long.parseLong(temp2); // bytes=1275856879-1275877358,到第 1275877358 个字节结束
|
|
|
+ contentLength = toLength - pastLength; // 客户端请求的是 1275856879-1275877358 之间的字节
|
|
|
+ }
|
|
|
+ } else { // 从开始进行下载
|
|
|
+ contentLength = fileLength; // 客户端要求全文下载
|
|
|
+ }
|
|
|
+
|
|
|
+ // 如果设设置了Content-Length,则客户端会自动进行多线程下载。如果不希望支持多线程,则不要设置这个参数。 响应的格式是:
|
|
|
+ // Content-Length: [文件的总大小] - [客户端请求的下载的文件块的开始字节]
|
|
|
+ // ServletActionContext.getResponse().setHeader("Content- Length", new Long(file.length() - p).toString());
|
|
|
+ response.reset(); // 告诉客户端允许断点续传多线程连接下载,响应的格式是:Accept-Ranges: bytes
|
|
|
+ if (pastLength != 0) {
|
|
|
+ response.setHeader("Accept-Ranges", "bytes");// 如果是第一次下,还没有断点续传,状态是默认的 200,无需显式设置;响应的格式是:HTTP/1.1 200 OK
|
|
|
+ // 不是从最开始下载, 响应的格式是: Content-Range: bytes [文件块的开始字节]-[文件的总大小 - 1]/[文件的总大小]
|
|
|
+ logger.debug("---------------不是从开始进行下载!服务器即将开始断点续传...");
|
|
|
+ switch (rangeSwitch) {
|
|
|
+ case 1: { // 针对 bytes=27000- 的请求
|
|
|
+ String contentRange = new StringBuffer("bytes ").append(new Long(pastLength).toString()).append("-")
|
|
|
+ .append(new Long(fileLength - 1).toString()).append("/").append(new Long(fileLength).toString()).toString();
|
|
|
+ response.setHeader("Content-Range", contentRange);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ case 2: { // 针对 bytes=27000-39000 的请求
|
|
|
+ String contentRange = rangeBytes + "/" + new Long(fileLength).toString();
|
|
|
+ response.setHeader("Content-Range", contentRange);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ default: {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ // 是从开始下载
|
|
|
+ logger.debug("---------------是从开始进行下载!");
|
|
|
+ }
|
|
|
+
|
|
|
+ try {
|
|
|
+ response.addHeader("Content-Disposition", "attachment; filename=\"" +
|
|
|
+ Encodes.urlEncode(StringUtils.isBlank(fileName) ? file.getName() : fileName) + "\"");
|
|
|
+ response.setContentType(getContentType(file.getName())); // set the MIME type.
|
|
|
+ response.addHeader("Content-Length", String.valueOf(contentLength));
|
|
|
+ os = response.getOutputStream();
|
|
|
+ out = new BufferedOutputStream(os);
|
|
|
+ raf = new RandomAccessFile(file, "r");
|
|
|
+ try {
|
|
|
+ switch (rangeSwitch) {
|
|
|
+ case 0: { // 普通下载,或者从头开始的下载 同1
|
|
|
+ }
|
|
|
+ case 1: { // 针对 bytes=27000- 的请求
|
|
|
+ raf.seek(pastLength); // 形如 bytes=969998336- 的客户端请求,跳过 969998336 个字节
|
|
|
+ int n = 0;
|
|
|
+ while ((n = raf.read(b, 0, 1024)) != -1) {
|
|
|
+ out.write(b, 0, n);
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ case 2: { // 针对 bytes=27000-39000 的请求
|
|
|
+ raf.seek(pastLength); // 形如 bytes=1275856879-1275877358 的客户端请求,找到第 1275856879 个字节
|
|
|
+ int n = 0;
|
|
|
+ long readLength = 0; // 记录已读字节数
|
|
|
+ while (readLength <= contentLength - 1024) {// 大部分字节在这里读取
|
|
|
+ n = raf.read(b, 0, 1024);
|
|
|
+ readLength += 1024;
|
|
|
+ out.write(b, 0, n);
|
|
|
+ }
|
|
|
+ if (readLength <= contentLength) { // 余下的不足 1024 个字节在这里读取
|
|
|
+ n = raf.read(b, 0, (int) (contentLength - readLength));
|
|
|
+ out.write(b, 0, n);
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ default: {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ out.flush();
|
|
|
+ logger.debug("---------------下载完成!");
|
|
|
+ } catch (IOException ie) {
|
|
|
+ /**
|
|
|
+ * 在写数据的时候, 对于 ClientAbortException 之类的异常,
|
|
|
+ * 是因为客户端取消了下载,而服务器端继续向浏览器写入数据时, 抛出这个异常,这个是正常的。
|
|
|
+ * 尤其是对于迅雷这种吸血的客户端软件, 明明已经有一个线程在读取 bytes=1275856879-1275877358,
|
|
|
+ * 如果短时间内没有读取完毕,迅雷会再启第二个、第三个。。。线程来读取相同的字节段, 直到有一个线程读取完毕,迅雷会 KILL
|
|
|
+ * 掉其他正在下载同一字节段的线程, 强行中止字节读出,造成服务器抛 ClientAbortException。
|
|
|
+ * 所以,我们忽略这种异常
|
|
|
+ */
|
|
|
+ logger.debug("提醒:向客户端传输时出现IO异常,但此异常是允许的,有可能客户端取消了下载,导致此异常,不用关心!");
|
|
|
+ }
|
|
|
+ } catch (Exception e) {
|
|
|
+ logger.error(e.getMessage(), e);
|
|
|
+ } finally {
|
|
|
+ if (out != null) {
|
|
|
+ try {
|
|
|
+ out.close();
|
|
|
+ } catch (IOException e) {
|
|
|
+ logger.error(e.getMessage(), e);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (raf != null) {
|
|
|
+ try {
|
|
|
+ raf.close();
|
|
|
+ } catch (IOException e) {
|
|
|
+ logger.error(e.getMessage(), e);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 修正路径,将 \\ 或 / 等替换为 File.separator
|
|
|
+ * @param path 待修正的路径
|
|
|
+ * @return 修正后的路径
|
|
|
+ */
|
|
|
+ public static String path(String path){
|
|
|
+ String p = StringUtils.replace(path, "\\", "/");
|
|
|
+ p = StringUtils.join(StringUtils.split(p, "/"), "/");
|
|
|
+ if (!StringUtils.startsWithAny(p, "/") && StringUtils.startsWithAny(path, "\\", "/")){
|
|
|
+ p += "/";
|
|
|
+ }
|
|
|
+ if (!StringUtils.endsWithAny(p, "/") && StringUtils.endsWithAny(path, "\\", "/")){
|
|
|
+ p = p + "/";
|
|
|
+ }
|
|
|
+ if (path != null && path.startsWith("/")){
|
|
|
+ p = "/" + p; // linux下路径
|
|
|
+ }
|
|
|
+ return p;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 获目录下的文件列表
|
|
|
+ * @param dir 搜索目录
|
|
|
+ * @param searchDirs 是否是搜索目录
|
|
|
+ * @return 文件列表
|
|
|
+ */
|
|
|
+ public static List<String> findChildrenList(File dir, boolean searchDirs) {
|
|
|
+ List<String> files = Lists.newArrayList();
|
|
|
+ for (String subFiles : dir.list()) {
|
|
|
+ File file = new File(dir + "/" + subFiles);
|
|
|
+ if (((searchDirs) && (file.isDirectory())) || ((!searchDirs) && (!file.isDirectory()))) {
|
|
|
+ files.add(file.getName());
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return files;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 获取文件扩展名(返回小写)
|
|
|
+ * @param fileName 文件名
|
|
|
+ * @return 例如:test.jpg 返回: jpg
|
|
|
+ */
|
|
|
+ public static String getFileExtension(String fileName) {
|
|
|
+ if ((fileName == null) || (fileName.lastIndexOf(".") == -1) || (fileName.lastIndexOf(".") == fileName.length() - 1)) {
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ return StringUtils.lowerCase(fileName.substring(fileName.lastIndexOf(".") + 1));
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 获取文件名,不包含扩展名
|
|
|
+ * @param fileName 文件名
|
|
|
+ * @return 例如:d:\files\test.jpg 返回:d:\files\test
|
|
|
+ */
|
|
|
+ public static String getFileNameWithoutExtension(String fileName) {
|
|
|
+ if ((fileName == null) || (fileName.lastIndexOf(".") == -1)) {
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ return fileName.substring(0, fileName.lastIndexOf("."));
|
|
|
+ }
|
|
|
+}
|