Oracle数据库基本操作 （五） —— 使用java调用存储过程

一、环境准备

　登录Oracle数据库scott账号，利用emp进行操作。

1、创建 proc_getyearsal 存储过程

 -- 获取指定员工年薪
 create or replace procedure proc_getyearsal(vempno in number,vyearsal out number)
 is
 
 begin
    select sal*12+nvl(comm,0) into vyearsal from emp where empno=vempno;
 end;

2、创建 proc_gettemps 存储过程（游标）

 create or replace procedure proc_gettemps(vemps out sys_refcursor)
 is
 BEGIN
 open vemps for select * from emp where deptno = 20;
 end;

3、导入数据库驱动包 —— ojdbc14.jar

二、java代码示例

 package com.pri.test;
 
 public class TestProcedure {
 
 　　/*
 　　　　java调用存储过程模板（一）
 　　　　获取单值操作
 　　*/
     @Test
     public void test01() throws Exception {
         //1.注册驱动
         Class.forName("oracle.jdbc.driver.OracleDriver");
         //2.获取连接
         String url = "jdbc:oracle:thin:@10.211.55.29:1521/orcl";
         String user = "zhangsan";
         String password = "zs123";
         Connection conn = DriverManager.getConnection(url, user, password);
         //3.获取执行SQL的对象
         String sql = "{call proc_getyearsal(?,?)}";
         CallableStatement callableStatement = conn.prepareCall(sql);
         //3.1 设置输出参数
         callableStatement.setInt(1,7369);
         //3.2 注册输出类型
         callableStatement.registerOutParameter(2, Types.DOUBLE);
         //4.执行SQL
         callableStatement.execute();
         //5.执行结果
         double yearsal = callableStatement.getDouble(2);
         System.out.println("年薪:"+yearsal);
         //6.释放资源
         callableStatement.close();
         conn.close();
     }
 　　
 　　/*
 　　   java调用存储过程模板（二）
 　　　　多行记录（游标）操作
 　　*/
     @Test
     public void test03() throws Exception {
         //1.注册驱动
         Class.forName("oracle.jdbc.driver.OracleDriver");
         //2.获取连接
         String url = "jdbc:oracle:thin:@10.211.55.29:1521/orcl";
         String user = "zhangsan";
         String password = "zs123";
         Connection conn = DriverManager.getConnection(url, user, password);
         //3.获取执行SQL的对象
         String sql = "{call proc_gettemps(?)}";
         CallableStatement callableStatement = conn.prepareCall(sql);
         //3.1 注册输出类型
         callableStatement.registerOutParameter(1, OracleTypes.CURSOR);
         //4.执行SQL
         callableStatement.execute();
         //5.获取结果
         System.out.println(callableStatement.getClass().getName());
 //        T4CCallableStatent call2 = () callableStatement;
         OracleCallableStatement call2 = (OracleCallableStatement) callableStatement;
         ResultSet rs = call2.getCursor(1);
 
         while(rs.next()){
             System.out.println(rs.getObject("empno"));
             System.out.println(rs.getObject("ename"));
             System.out.println(rs.getObject("sal"));
             System.out.println("------------------------");
         }
         //6.释放资源
         rs.close();
         callableStatement.close();
         conn.close();
     }
 
 }