java 调用mysql的存储过程(简单示例)

首先我在mysql的test数据库里定义了一个student表:

create table student4(

id   int   primary key,

sanme char(5)

);

插入几个数据做测试用:

inset into student values(1,'mayi');

inset into student values(2,'mayi');

inset into student values(3,'mayi');

 

建立存储过程:

in 型:

delimiter //

create procedure demo_in(in p_in int)

begin

select p_in;

set p_in=2;

select p_in;

end;

//

delimiter ;

 

 

java测试代码:

 CallableStatement callstatement = conn.prepareCall("call demo_in(?)");//conn,数据库连接


 callstatement.setInt(1, 1);//设置第一个参数


callstatement.execute();//执行

 

conn.close();//关闭连接

 

 

 

out型:

 

delimiter //

create procedure demo_out(out s int)

begin

select count(*) into s from student;

end

//

delimiter ;

 

java测试代码:

   CallableStatement callstatement = conn.prepareCall("call demo_out(?)");


   callstatement.registerOutParameter(1, java.sql.Types.INTEGER);//注册存储过程的out型参数类型;使用之前必须注册;


   callstatement.execute();//执行


   System.out.println(callstatement.getInt(1));//获得存储过程的输出参数


   conn.close();//关闭连接

 

posted @ 2016-06-20 23:09  龙昊雪  阅读(1184)  评论(0编辑  收藏  举报