接上面一片博文，自己弄了一个简单的数据库操作工具类：

/** 创建日期 2014-6-5** TODO 要更改此生成的文件的模板，请转至* 窗口 － 首选项 － Java － 代码样式 － 代码模板*/
package com.excellence.explatform.proxy.util;import java.sql.Connection;
import java.sql.Date;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;import javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;/*** @author pengsy* * TODO 要更改此生成的类型注释的模板，请转至 窗口 － 首选项 － Java － 代码样式 － 代码模板*/
public final class DBUtil {/*** 获取数据库连接* * @return* @throws Exception*/public static Connection getConnection() throws Exception {Context context = null;DataSource dataSource = null;try {context = new InitialContext();try{//TOMCAT JDK1.6dataSource = (DataSource) context.lookup("java:comp/env/jdbc/exoa");}catch(Exception E){E.printStackTrace();}if(dataSource == null){//WAS JDK1.4dataSource = (DataSource) context.lookup("jdbc/exoa");}if (dataSource == null) {System.err.println("打开数据库连接出错！！！");return null;}return dataSource.getConnection();} catch (Exception e) {e.printStackTrace();return null;}}/*** 执行sql语句* @param sql* @param params* @return* @throws Exception*/public static boolean executeSql(String sql, ArrayList params)throws Exception {Connection conn = getConnection();PreparedStatement ps = null;if(conn == null){return false;}try{ps = conn.prepareStatement(sql);for (int i = 0; i < params.size(); i++) {Object param = (Object) params.get(i);if(param instanceof String){ps.setString((i+1),(String) param);}else if(param instanceof Date){ps.setDate((i+1),(Date) param);}else{ps.setString((i+1),param == null ? "" : param.toString());}}return ps.execute();}catch(Exception e){e.printStackTrace();return false;}finally{if(ps != null ){ps.close();}conn.close();}}public static Map queryRecordInfo(String sql, ArrayList params)throws Exception {Connection conn = getConnection();PreparedStatement ps = null;ResultSet rs = null;Map resultMap = null;if(conn == null){return null;}try{ps = conn.prepareStatement(sql);for (int i = 0; i < params.size(); i++) {Object param = (Object) params.get(i);if(param instanceof String){ps.setString((i+1),(String) param);}else if(param instanceof Date){ps.setDate((i+1),(Date) param);}else{ps.setString((i+1),param == null ? null : param.toString());}}rs = ps.executeQuery();ResultSetMetaData metaData = ps.getMetaData();if(rs != null){resultMap = new HashMap();while(rs.next()){for(int i = 0 ; i < metaData.getColumnCount();i++){resultMap.put(metaData.getColumnName(i+1),rs.getObject(i+1));}break;}}}catch(Exception e){e.printStackTrace();}finally{if(rs != null ){rs.close();}if(ps != null ){ps.close();}conn.close();}return resultMap;}
}