插入1w条数据不报错，但是插入2w条数据时候报错，为什么呢？

   我用jdbc做了个定时更新数据库的功能，当插入1w条数据时候没点问题，当插入2w条数据时候，就报连接超时的错误接着，但是程序还是没有挂掉，不知道是什么原因就解？
   

    package com.jgre.org;

import java.sql.Connection;

import java.sql.Date;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.List;


public class DB {
	//设置
	 static int precount=1000; 
	
	 public static  Connection getConnect() throws Exception{
		   Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver").newInstance();
		   //?useUnicode=true&characterEncoding=utf8
		   Connection conn= DriverManager.getConnection("jdbc:sqlserver://146.12.62.208:1433;DatabaseName=LHJGXN", "sa", "flying-321");
        return conn;        
	  }
	 
	 public static void free(ResultSet rs,PreparedStatement ps,Connection conn){
			try {
				  if(rs!=null) rs.close();
				  if(ps!=null) ps.close();
				  if(conn!=null) conn.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
	 }
	 public static void free(PreparedStatement ps,Connection conn){
			try {
				  if(ps!=null) ps.close();
				  if(conn!=null) conn.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
	 }
	 //插入数据
	 public synchronized int insertObject(List<AJXX> list){
		 list=DB.initArray(list);
		 Connection conn=null;
		 PreparedStatement ps=null;
		 try {
			conn=DB.getConnect();
			//关闭自动提交
			conn.setAutoCommit(false);
			//清空数据库
			ps=conn.prepareStatement("truncate table LHJGXN.dbo.TB_AJXX");
			ps.executeUpdate();
			
			long startTime=System.currentTimeMillis();
			String sql="insert into LHJGXN.dbo.TB_AJXX( " +
					"AH,NH,ZH,SAXH,AY,LARQ,LAR,CBT,SJCBT, " +
					"CBR,AJLB,SPCX,SYCX,SFDA,SFYA,AJSJ,ZZRQ," +
					"JARQ, JAFS,GDRQ,DTXP,FDSXDQR,KCSXTS,SXDQR," +
					"AJZT,XLABZ)values(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)";			
			ps=conn.prepareStatement(sql);
			for(int i=0;i<list.size();i++){
				System.out.println(i);
				AJXX a=list.get(i);
				if(a.getAH()!=null&&!a.getAH().equals("")){
                 ps.setString(1, a.getAH());
                 ps.setInt(2, a.getNH());
                 ps.setString(3, a.getZH());
                 ps.setInt(4, a.getSAXH());
                 ps.setInt(5, a.getAY());
                // Date d=new Date();
                 if(tDate(a.getLARQ())==0){
                 ps.setDate(6,  null); 
                 }else{
                 ps.setDate(6,  new Date(tDate(a.getLARQ())));
                 }
                 ps.setString(7, a.getLAR());
                 ps.setString(8, a.getCBT());
                 ps.setString(9, a.getSJCBT());
                 ps.setString(10, a.getCBR());
                 ps.setString(11, a.getAJLB());
                 ps.setString(12, a.getSPCX());
                 ps.setString(13, a.getSYCX());
                 ps.setString(14, a.getSFDA());
                 ps.setString(15, a.getSFYA());
                 ps.setString(16, a.getAJSJ());
                 if(tDate(a.getZZRQ())==0){
                	 ps.setDate(17, null);
                 }else{
                 ps.setDate(17, new Date(tDate(a.getZZRQ())));
                 }
                 if(tDate(a.getJARQ())==0){
                 ps.setDate(18, null);
                 }else{
                	 ps.setDate(18, new Date(tDate(a.getJARQ())));
                 }
                 ps.setString(19, getJAFS(a.getJAFS(),conn));
                 if(tDate(a.getGDRQ())==0){
                	 ps.setDate(20, null); 
                 }else{
                 ps.setDate(20, new Date(tDate(a.getGDRQ())));
                 }
                 ps.setInt(21, a.getDTXP());
                 ps.setString(22, a.getFDSXDQR());
                 ps.setInt(23, a.getKCSXTS());
                 ps.setString(24, a.getSXDQR());
                 ps.setString(25, a.getAJZT());
                 ps.setString(26, a.getXLABZ());
			   // ps.executeUpdate();
			    ps.addBatch();
			    }
			//每precount次就批量处理一次
			if((i+1)%precount==0){
				ps.executeBatch();
			//因为不确定总数所以没有去分很多批去执行，我整体做了个批量处理	
			   }
			}
			//提交
			//ps.executeBatch();
		 	
			conn.commit();
			ps.clearBatch();
		 	long endTime=System.currentTimeMillis();
		 	System.out.println("插入数据时间为："+(endTime-startTime)+"ms");
		 	return (int)(endTime-startTime);
		} catch (Exception e) {
			try {
				//如果出现问题就回滚
				conn.rollback();
			} catch (SQLException e1) {
				e1.printStackTrace();
			}
			e.printStackTrace();
			PrintLog.writeLog("error:"+e.toString());
		}finally{
				DB.free(ps, conn);
		}
		 return -1;  
	 }
	 //根据案由名称获取案由编号
	 public static int getAYBH(String AYMC){
		 Connection conn=null;
		 PreparedStatement ps=null;
		 ResultSet rs=null;
		 try {
		    conn=DB.getConnect();
			ps=conn.prepareStatement("select AYBH from LHJGXN.dbo.TB_AY where AYMC=?");
			ps.setString(1, AYMC);
			rs=ps.executeQuery();
			if(rs.next()){
				return rs.getInt(1);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			DB.free(rs, ps, conn);
		}
		 return -1;
	 }
	 //得到字号
	 public static String getZH(String ZHMC){
		 Connection conn=null;
		 PreparedStatement ps=null;
		 ResultSet rs=null;
		 try {
			conn=DB.getConnect();
			ps=conn.prepareStatement("select ZH from LHJGXN.dbo.TB_ZHXX where ZHMC=?");
			ps.setString(1, ZHMC);
			rs=ps.executeQuery();
			if(rs.next()){
				return rs.getString(1);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			DB.free(rs, ps, conn);
		}
		 return null;
	 }
	//跟根据结案名称获取JAFS、AJLB、SPCX
	 public static int getInfo(String cmd,String MC,Connection conn){
		 //Connection conn=null;
		 PreparedStatement ps=null;
		 ResultSet rs=null;
		 String sql=null;
		 if(cmd.equalsIgnoreCase("JAFS")){
			sql="select JAFS from LHJGXN.dbo.TB_JAFS where MC=?";
		 }else if(cmd.equalsIgnoreCase("AJLB")){
			 sql="select AJLB from LHJGXN.dbo.TB_JAFS where MC=?"; 
		 }else if(cmd.equalsIgnoreCase("SPCX")){
			 sql="select SPCX from LHJGXN.dbo.TB_JAFS where MC=?";
		 }
		 try {
			conn=DB.getConnect();
			ps=conn.prepareStatement(sql);
			ps.setString(1, MC);
			rs=ps.executeQuery();
			if(rs.next()){
				return rs.getInt(1);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			DB.free(rs, ps, conn);
		}
		 return -1;
	 }
	 public static long tDate(String d){
		 SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
		   try {
			   if(d!=null&&!d.equals("")){
		java.util.Date date=sdf.parse(d);
		return date.getTime();}
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return 0;
	 }
	 public static String getJAFS(String jafs,Connection conn){
		 if(jafs!=null&&!jafs.trim().equals("")){
			// Connection conn=null;
			 PreparedStatement ps=null;
			 ResultSet rs=null;
			 try {
				conn=DB.getConnect();
				ps=conn.prepareStatement("select JAFS from LHJGXN.dbo.TB_JAFS where MC=?");
				ps.setString(1, jafs);
				rs=ps.executeQuery();
				if(rs.next()){
					return rs.getString(1);
				}
			 } catch (Exception e) {
					e.printStackTrace();
			 }finally{
				 DB.free(rs,ps, conn);
			 }
		 }
		 return null;
	 }
	 public static List<AJXX> initArray(List<AJXX> d){
			while(d!=null&d.size()>0&d.size()%precount!=0){
				AJXX a=new AJXX();
				d.add(a);
			}
			System.out.println("格式化后的数据长度："+d.size());
			return d;
		}
	 
}


   

  然后报的错误是这样的
 

   22238
22239
22240
com.microsoft.sqlserver.jdbc.SQLServerException: 到主机  的 TCP/IP 连接失败。 java.net.BindException: Address already in use: connect
	at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(Unknown Source)
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(Unknown Source)
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.loginWithoutFailover(Unknown Source)
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(Unknown Source)
	at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(Unknown Source)
	at java.sql.DriverManager.getConnection(DriverManager.java:582)
	at java.sql.DriverManager.getConnection(DriverManager.java:185)
	at com.jgre.org.DB.getConnect(DB.java:22)
	at com.jgre.org.DB.getJAFS(DB.java:226)
	at com.jgre.org.DB.insertObject(DB.java:98)
	at com.jgre.org.PickTask$1.run(TimerUse.java:120)
	at java.util.TimerThread.mainLoop(Timer.java:512)
	at java.util.TimerThread.run(Timer.java:462)
com.microsoft.sqlserver.jdbc.SQLServerException: 该连接已关闭。
	at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(Unknown Source)
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.checkClosed(Unknown Source)
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.rollback(Unknown Source)
	at com.jgre.org.DB.insertObject(DB.java:130)
	at com.jgre.org.PickTask$1.run(TimerUse.java:120)
	at java.util.TimerThread.mainLoop(Timer.java:512)
	at java.util.TimerThread.run(Timer.java:462)
com.microsoft.sqlserver.jdbc.SQLServerException: 该连接已关闭。
	at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(Unknown Source)
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.checkClosed(Unknown Source)
	at com.microsoft.sqlserver.jdbc.SQLServerStatement.checkClosed(Unknown Source)
	at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.setterGetParam(Unknown Source)
	at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.setString(Unknown Source)
	at com.jgre.org.DB.insertObject(DB.java:98)
	at com.jgre.org.PickTask$1.run(TimerUse.java:120)
	at java.util.TimerThread.mainLoop(Timer.java:512)
	at java.util.TimerThread.run(Timer.java:462)
2012-12-04 00:54:08 00:54
2012-12-04 00:55:08 00:55
2012-12-04 00:56:08 00:56
  

    求遇到过类似情况的，麻烦告诉下解决办法，急救，谢谢！！