java 調用mysql的預存程序(簡單樣本)

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首先我在mysql的test資料庫裡定義了一個student表:

create table student4(

id   int   primary key,

sanme char(5)

);

插入幾個資料做測試用:

inset into student values(1,‘mayi‘);

inset into student values(2,‘mayi‘);

inset into student values(3,‘mayi‘);

 

建立預存程序:

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測試代碼:

 CallableStatement callstatement = conn.prepareCall("call demo_in(?)");//conn,資料庫連接


 callstatement.setInt(1, 1);//設定第一個參數


callstatement.execute();//執行

 

conn.close();//關閉串連

 

 

 

out型:

 

delimiter //

create procedure demo_out(out s int)

begin

select count(*) into s from student;

end

//

delimiter ;

 

java測試代碼:

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


   callstatement.registerOutParameter(1, java.sql.Types.INTEGER);//註冊預存程序的out型參數類型;使用之前必須註冊;


   callstatement.execute();//執行


   System.out.println(callstatement.getInt(1));//獲得預存程序的輸出參數


   conn.close();//關閉串連

 

java 調用mysql的預存程序(簡單樣本)

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