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- <%@ page session="false" pageEncoding="UTF-8" contentType="text/html; charset=UTF-8" %>
- <%@ page import="java.io.*"%>
- <%@ page import="java.util.*"%>
- <%@ page import="java.text.*"%>
- <%@ page import="org.apache.commons.fileupload.*"%>
- <%@ page import="org.apache.commons.fileupload.disk.*"%>
- <%@ page import="org.apache.commons.fileupload.servlet.*"%>
- <%@ page import="org.apache.commons.fileupload.util.*"%>
- <%@ page import="com.alibaba.fastjson.*"%>
- <%
- String contentType = request.getContentType();
- if ( contentType.indexOf("multipart/form-data") >= 0 )
- {
- Result result = new Result();
- result.avatarUrls = new ArrayList();
- result.success = false;
- result.msg = "Failure!";
- String userid;
- String username;
- FileItemFactory factory = new DiskFileItemFactory();
- ServletFileUpload upload = new ServletFileUpload(factory);
- FileItemIterator fileItems = upload.getItemIterator(request);
- //定义一个变量用以储存当前头像的序号
- int avatarNumber = 1;
- //取服务器时间+8位随机码作为部分文件名,确保文件名无重复。
- SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmmssS");
- String fileName = simpleDateFormat.format(new Date());
- Random random = new Random();
- String randomCode = "";
- for ( int i = 0; i < 8; i++ )
- {
- randomCode += Integer.toString(random.nextInt(36), 36);
- }
- fileName = fileName + randomCode;
- //基于原图的初始化参数
- String initParams = "";
- BufferedInputStream inputStream;
- BufferedOutputStream outputStream;
- //遍历表单域
- while( fileItems.hasNext() )
- {
- FileItemStream fileItem = fileItems.next();
- String fieldName = fileItem.getFieldName();
- //是否是原始图片 file 域的名称(默认的 file 域的名称是__source,可在插件配置参数中自定义。参数名:src_field_name)
- Boolean isSourcePic = fieldName.equals("__source");
- //当前头像基于原图的初始化参数(只有上传原图时才会发送该数据,且发送的方式为POST),用于修改头像时保证界面的视图跟保存头像时一致,提升用户体验度。
- //修改头像时设置默认加载的原图url为当前原图url+该参数即可,可直接附加到原图url中储存,不影响图片呈现。
- if ( fieldName.equals("__initParams") )
- {
- inputStream = new BufferedInputStream(fileItem.openStream());
- byte[] bytes = new byte [inputStream.available()];
- inputStream.read(bytes);
- initParams = new String(bytes, "UTF-8");
- inputStream.close();
- }
- //如果是原始图片 file 域的名称或者以默认的头像域名称的部分“__avatar”打头(默认的头像域名称:__avatar1,2,3...,可在插件配置参数中自定义,参数名:avatar_field_names)
- else if ( isSourcePic || fieldName.startsWith("__avatar") )
- {
- String virtualPath = "uploadFiles/uploadUserPhoto/jsp_avatar" + avatarNumber + "_" + fileName + ".jpg";
- //原始图片(默认的 file 域的名称是__source,可在插件配置参数中自定义。参数名:src_field_name)。
- if( isSourcePic )
- {
- //文件名,如果是本地或网络图片为原始文件名、如果是摄像头拍照则为 *FromWebcam.jpg
- String sourceFileName = fileItem.getName();
- //原始文件的扩展名(不包含“.”)
- String sourceExtendName = sourceFileName.substring(sourceFileName.lastIndexOf('.') + 1);
- result.sourceUrl = virtualPath = String.format("uploadFiles/uploadUserPhoto/jsp_source_%s.%s", fileName, sourceExtendName);
- }
- //头像图片(默认的 file 域的名称:__avatar1,2,3...,可在插件配置参数中自定义,参数名:avatar_field_names)。
- else
- {
- result.avatarUrls.add(virtualPath);
- avatarNumber++;
- }
- inputStream = new BufferedInputStream(fileItem.openStream());
- outputStream = new BufferedOutputStream(new FileOutputStream(application.getRealPath("/") + virtualPath));
- Streams.copy(inputStream, outputStream, true);
- inputStream.close();
- outputStream.flush();
- outputStream.close();
- }
- else
- {
- //注释① upload_url中传递的查询参数,如果定义的method为post请使用下面的代码,否则请删除或注释下面的代码块并使用注释②的代码
- inputStream = new BufferedInputStream(fileItem.openStream());
- byte[] bytes = new byte [inputStream.available()];
- inputStream.read(bytes);
- inputStream.close();
- if (fieldName.equals("userid"))
- {
- result.userid = new String(bytes, "UTF-8");
- }
- else if (fieldName.equals("username"))
- {
- result.username = new String(bytes, "UTF-8");
- }
- }
- }
- //注释② upload_url中传递的查询参数,如果定义的method为get请使用下面注释的代码
- /*
- result.userid = request.getParameter("userid");
- result.username = request.getParameter("username");
- */
- if ( result.sourceUrl != null )
- {
- result.sourceUrl += initParams;
- }
- result.success = true;
- result.msg = "Success!";
- /*
- To Do...可在此处处理储存事项
- */
- //返回图片的保存结果(返回内容为json字符串,可自行构造,该处使用fastjson构造)
- out.println(JSON.toJSONString(result));
- }
- %>
- <%!
- /**
- * 表示上传的结果。
- */
- private class Result
- {
- /**
- * 表示图片是否已上传成功。
- */
- public Boolean success;
- public String userid;
- public String username;
- /**
- * 自定义的附加消息。
- */
- public String msg;
- /**
- * 表示原始图片的保存地址。
- */
- public String sourceUrl;
- /**
- * 表示所有头像图片的保存地址,该变量为一个数组。
- */
- public ArrayList avatarUrls;
- }
- %>
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