jsgkj/xtdsp/trunk/src/main/java/com/xt/dsp/jdbc/JDBCTools.java

package com.xt.dsp.jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Date;

import com.alibaba.fastjson.JSONObject;

public class JDBCTools {
	private Connection conn;
	private Statement statement;
	private PreparedStatement ps;
	private ResultSet rs;
	private String driver = null;
	private String url = null;
	private String username = null;
	private String password = null;

	public JDBCTools(JSONObject connJson) {
		this.driver = connJson.getString("driver");
		this.url = connJson.getString("url");
		this.username = connJson.getString("username");
		this.password = connJson.getString("password");
	}

	public Connection getConnection() throws ClassNotFoundException, SQLException {
		Class.forName(this.driver);
		return conn = DriverManager.getConnection(url, username, password);
	}

	public void update(String sql, String condition) {
		try {
			conn = getConnection();
			ps = (PreparedStatement) conn.prepareStatement(sql);
			ps.setString(1, condition);
			ps.executeUpdate(sql);
		} catch (SQLException e) {
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} finally {
			releaseDB(conn, statement);
		}
	}

	public void update1(String sql) {
		try {
			statement = (Statement) getConnection().createStatement();
			statement.executeUpdate(sql);
		} catch (SQLException e) {
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			releaseDB(conn, statement);

		}
	}

	public void testUpdete1() {
		String sql1 = "DELETE FROM Users WHERE userName='RORO'";
		update1(sql1);
	}

	public void releaseDB(Connection conn, Statement statement) {
		if (statement != null) {
			try {
				statement.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}

		if (conn != null) {
			try {
				conn.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
	}

	public void releaseDB(Connection conn, PreparedStatement ps) {
		if (ps != null) {
			try {
				ps.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}

		if (conn != null) {
			try {
				conn.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
	}

	public void releaseDB() {
		if (ps != null) {
			try {
				ps.close();
			} catch (Exception e) {
			}
		}

		if (rs != null) {
			try {
				rs.close();
			} catch (Exception e) {
			}
		}

		if (conn != null) {
			try {
				conn.close();
			} catch (Exception e) {
			}
		}
	}

	public ResultSet getResultSet(String sql) {
		try {
			conn = getConnection();
			statement = (Statement) conn.createStatement();
			rs = statement.executeQuery(sql);
		} catch (SQLException e) {
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		}
		return rs;
	}

	public ResultSet getPreResultSet(String sql, String condition) {
		try {
			conn = getConnection();
			ps = (PreparedStatement) conn.prepareStatement(sql);
			ps.setString(1, condition);
			rs = ps.executeQuery();

		} catch (SQLException e) {
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		}
		return rs;

	}
}