在mysql中创建两个存储过程，如下：
1、根据id查找某条数据：
1 CREATE PROCEDURE findEmpById(IN id INTEGER(11))
2 begin
3 select * from emp where empId=id;
4 end;2、根据id查找某个字段，并返回
1 CREATE PROCEDURE getNameById(in id integer(11),out eName varchar(50))
2 begin
3 select empName into eName from emp where empId=id;
4 end;在存储过程的参数列表里面，in修饰的参数代表输入参数，out修饰的代表输出参数。
使用hibernate调用上面两个存储过程：
（1）调用第一个存储过程
1 package com.test;
2
3 import java.sql.CallableStatement;
4 import java.sql.Connection;
5 import java.sql.ResultSet;
6 import java.sql.SQLException;
7
8 import org.hibernate.Session;
9 import org.hibernate.SessionFactory;
10 import org.hibernate.cfg.Configuration;
11
12
13 public class 调用存储过程 {
14
15 /*
16 @param args
17 @throws SQLException
18 /
19 public static void main(String[] args) throws SQLException {
20 Configuration cfg = new Configuration().configure();
21 SessionFactory factory = cfg.buildSessionFactory();
22 Session session = factory.openSession();
23 Connection con = session.connection();
24 String sql = “{call findEmpById(?)}”;
25 CallableStatement cs = con.prepareCall(sql);
26 cs.setObject(1, 2);
27 ResultSet rs = cs.executeQuery();
28 while(rs.next()){
29 int id = rs.getInt(“empId”);
30 String name = rs.getString(“empName”);
31 System.out.println(id+”\t”+name);
32 }
33 }
34
35 }调用存储过程的sql语句为:call 存储过程名(参数…)，不过在java中调用存储过程一般都加{}。调用存储过程使用的是CallableStatement。
（2）调用第二个存储过程
1 package com.test;
2
3 import java.sql.CallableStatement;
4 import java.sql.Connection;
5 import java.sql.SQLException;
6
7 import org.hibernate.Session;
8 import org.hibernate.SessionFactory;
9 import org.hibernate.cfg.Configuration;
10
11 public class 调用存储过程1 {
12
13
14 public static void main(String[] args) throws SQLException {
15 Configuration config = new Configuration().configure();
16 SessionFactory sessionFactory = config.buildSessionFactory();
17 Session session = sessionFactory.openSession();
18 Connection conn = session.connection();
19 String sql = “{call getNameById(?,?)}”;
20 CallableStatement cs = conn.prepareCall(sql);
21 cs.setObject(1, 3); //设置输出参数
22 cs.registerOutParameter(2, java.sql.Types.VARCHAR); //设置第二个参数为输出参数
23 cs.execute(); //调用存储过程
24 String name = cs.getString(2);//获取输出参数
25 System.out.println(name);
26 }
27
28 }
![[MySQL]存储过程](https://ucc.alicdn.com/pic/developer-ecology/3mfxe2r26qbaq_7a3aba7e96c042d384df8d59a7e9dc4b.jpeg?x-oss-process=image/resize,h_160,m_lfit)
