mysql之批处理操作

优点:
用于socket通信最合适
代码如下:

package cn.com.day01;
import java.sql.*;
public class Jdbc {
		 private static final String DRIVER="com.mysql.jdbc.Driver";
		 private static final String URL="jdbc:mysql://localhost:3306/lf?rewriteBatchedStatements=true&useUnicode=true&characterEncoding=utf8";
		 private static final String root="root";
		 private static final String pass="root";
		 private static Connection conn=null;
		 private static PreparedStatement ps=null;
		 private static ResultSet rs=null;
		 public static Connection link(){
		 try {
		  Class.forName(DRIVER);
		  conn=DriverManager.getConnection(URL,root,pass); 
		 } catch (ClassNotFoundException e) {
		  // TODO Auto-generated catch block
		  e.printStackTrace();
		 } catch (SQLException e) {
		  // TODO Auto-generated catch block
		  e.printStackTrace();
		 }
		 return conn;
		 }
		 //�ر�
		 public static void closeAll(){
		 if(rs!=null){
		 try{
		 rs.close();
		 }catch(SQLException e){
		 e.printStackTrace();
		 }
		 }
		 if(ps!=null){
		 try{
		 ps.close();
		 }catch(SQLException e){
		 e.printStackTrace();
		 }
		 }
		 if(conn!=null){
		 try{
		 conn.close();
		 }catch(SQLException e){
		 e.printStackTrace();
		 }
		 }
		 }
		 //2.��ɾ��
		 public static void update(String sql,String [] sz) {
		 try{
		 conn=link();
		 //conn.setAutoCommit(false);
		 ps=conn.prepareStatement(sql);                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
		    for(int i = 0; i < 1000 ;i++){
	            ps.setString(1,"stu"+i);//填充占位符
	            ps.addBatch();//添加到批处理方法中,调用无参的方法,有参的是Statement来调用的!
	        } 
		 ps.executeBatch();
		   // conn.commit();
		 }catch(SQLException e1){
		 e1.printStackTrace();
		 }
		 }
		public static void main(String[] args) {
		 String sql="insert into lx values(?)";
		 Jdbc.update(sql, null);
	}
  
}

注意点:
一:mysql-connector-java-5.1.8-bin.jar版本高于5.1.3
低版本的数据库jar包没有批处理操作
二:
private static final String URL=“jdbc:mysql://localhost:3306/lf?rewriteBatchedStatements=true&useUnicode=true&characterEncoding=utf8”;
含有rewriteBatchedStatements=true
这有这有才是真正意义上的批处理

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转载自blog.csdn.net/qq_37591637/article/details/82911394
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