如何实现批量添加batch版本二（效率高）

如何实现批量添加batch版本二

url添加的一句话
问号请求参数
?rewriteBatchedStatements=true

代码：

package test_path;

import org.junit.Test;

import java.sql.*;

public class MoHuAndDeleteTest { 

    @Test
    public void testMoMu(){ 
        long start = System.currentTimeMillis();
        Connection conn=null;
        PreparedStatement ps=null;
        ResultSet rs=null;

        try{ 
            //1、注册驱动
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/test1?rewriteBatchedStatements=true",
                    "root", "root");
            //循环创建10000次预编译对象
            ps=conn.prepareStatement("insert into t_user values(null,?,?)");
            for (int i = 1; i < 10000; i++) { 
                ps.setObject(1,"admin"+i);
                ps.setObject(2,i+"pwd");
                //将这200条sql语句攒起来
                ps.addBatch();
            }
            //统一执行
            ps.executeBatch();
            long end = System.currentTimeMillis();
            System.out.println("使用executeBatch在预编译对象中将sql语句攒起来花费时间："+(end-start));

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

    }
}

传统方式代码：

package test_path;

import org.junit.Test;

import java.sql.*;

public class MoHuAndDeleteTest { 

    @Test
    public void testMoMu(){ 
        long start = System.currentTimeMillis();
        Connection conn=null;
        PreparedStatement ps=null;
        ResultSet rs=null;

        try{ 
            //1、注册驱动
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/test1",
                    "root", "root");
            //循环创建10000次预编译对象
            ps=conn.prepareStatement("insert into t_user values(null,?,?)");
            for (int i = 1; i < 200; i++) { 
                ps.setObject(1,"admin"+i);
                ps.setObject(2,i+"pwd");
                ps.executeUpdate();
            }
            long end = System.currentTimeMillis();
            System.out.println("使用传统方式批量添加花费时间："+(end-start));

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

    }
}

本文地址：https://blog.csdn.net/qq_41709577/article/details/110677404