myBatsi调用存储过程

1.结构

　　

2.准备数据

　　建表和插入数据

 CREATE TABLE p_user(
     id INT PRIMARY KEY AUTO_INCREMENT,
     name VARCHAR(10),
     sex CHAR(2)
 );
 INSERT INTO p_user(name,sex) VALUES('A',"男");
 INSERT INTO p_user(name,sex) VALUES('B',"女");
 INSERT INTO p_user(name,sex) VALUES('C',"男");

　　创建存储过程

 DELIMITER $
 CREATE PROCEDURE mybatis.get_user_count(IN sex_id INT,OUT user_count INT)
 BEGIN
 IF sex_id=0 THEN
 SELECT COUNT(*) FROM mybatis.p_user WHERE p_user.sex='女' INTO user_count;
 ELSE
 SELECT COUNT(*) FROM mybatis.p_user WHERE p_user.sex='男' INTO user_count;
 END IF;
 END
 $

　　

3.调用存储过程

SET @user_count=0;
CALL mybatis.get_user_count(1, @user_count);
SELECT @user_count;

在mysql中运行得：

4.新建实体类

 package com.cao.bean;

 public class PUser {
     private String id;
     private String name;
     private String sex;
     public PUser() {}
     public PUser(String id,String name,String sex) {
         this.id=id;
         this.name=name;
         this.sex=sex;
     }
     public String getId() {
         return id;
     }
     public void setId(String id) {
         this.id = id;
     }
     public String getName() {
         return name;
     }
     public void setName(String name) {
         this.name = name;
     }
     public String getSex() {
         return sex;
     }
     public void setSex(String sex) {
         this.sex = sex;
     }
     @Override
     public String toString() {
         return "User [id=" + id + ", name=" + name + ", sex=" + sex + "]";
     }

 }

4.映射文件

 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE mapper
     PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
     "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
     <mapper namespace="procedure">
         <!-- 查询男性或者女性的数量，如果输入的是0，则是女性 -->
         <select id="getCount" parameterMap="getUserCount" statementType="CALLABLE">
             CALL mybatis.get_user_count(?,?)
         </select>
         <parameterMap type="java.util.Map" id="getUserCount">
             <parameter property="SexId" mode="IN" jdbcType="INTEGER"/>
             <parameter property="UserCount" mode="OUT" jdbcType="INTEGER"/>
         </parameterMap>
     </mapper>

5.配置文件

 <?xml version="1.0" encoding="UTF-8" ?>
 <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">

 <configuration>
   <environments default="development">
     <environment id="development">
       <transactionManager type="JDBC">
         <property name="" value=""/>
       </transactionManager>
       <dataSource type="UNPOOLED">
         <property name="driver" value="com.mysql.jdbc.Driver"/>
         <property name="url" value="jdbc:mysql://127.0.0.1:3308/mybatis"/>
         <property name="username" value="root"/>
         <property name="password" value="123456"/>
       </dataSource>
     </environment>
   </environments>

    <mappers>
       <mapper resource="com/jun/sql/config/user.xml"/>
    </mappers>

 </configuration>

6.测试类

 package com.jun.main;

 import java.io.IOException;
 import java.io.Reader;
 import java.util.HashMap;
 import java.util.Map;

 import org.apache.ibatis.io.Resources;
 import org.apache.ibatis.session.SqlSession;
 import org.apache.ibatis.session.SqlSessionFactory;
 import org.apache.ibatis.session.SqlSessionFactoryBuilder;
 import org.junit.Test;
 public class MainTest {
     /**
      * 方式一
      * @throws Exception
      */
     @Test
     public void test1() throws Exception {
         Reader reader=Resources.getResourceAsReader("com/cao/config/Configuration.xml");
         SqlSessionFactory sqlSessionFactory=new SqlSessionFactoryBuilder().build(reader);
         SqlSession sqlSession=sqlSessionFactory.openSession(true);                //true后是自动提交

         String statement="procedure.getCount";

         Map<String,Integer> parameterMap=new HashMap<>();
         parameterMap.put("SexId", 1);
         parameterMap.put("UserCount", 0);
         sqlSession.selectOne(statement, parameterMap);
         Integer result=parameterMap.get("UserCount");
         System.out.println("result="+result);
         sqlSession.close();
     }

 }

7.效果