[javaSE] JDBC的批处理

向数据库发送多条sql语句

create database batch

use batch

create table batch_table(

id int primary key auto_increment,

name varchar(20)

)

insert into batch_table values(null,”aaa”)

insert into batch_table values(null,”bbb”)

insert into batch_table values(null,”ccc”)

Statement方式执行批处理：

优点：可以执行多条不同结构的sql语句

缺点：没有使用预编译机制，效率低下

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

public class JDBCBatchTest {
    public static void main(String[] args) {
        try {
            // 注册数据库驱动
            //DriverManager.registerDriver(new Driver());
            //使用反射的方式
            Class.forName("com.mysql.jdbc.Driver");
            //获取数据库连接，导包的时候，注意要导java.sql下的，面向接口编程
            Connection conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/java","root","root");
            //获取传输器对象
            Statement statement=conn.createStatement();
            statement.addBatch("create database batch");
            statement.addBatch("use batch");
            statement.addBatch("create table batch_table(id int primary key auto_increment,name varchar(20))");
            statement.addBatch("insert into batch_table values(null,‘aaa‘)");
            statement.addBatch("insert into batch_table values(null,‘bbb‘)");
            statement.addBatch("insert into batch_table values(null,‘ccc‘)");
            statement.executeBatch();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}