MyBatis 调用存储过程(详解)

1、项目结构

2、数据表t_user

3、创建User类

package com.po;
public class User {
    private Integer id;
    private String name;
    private String sex;
    private Integer age;
    public Integer getId() {
        return id;
    }
    public void setId(Integer 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;
    }
    public Integer getAge() {
        return age;
    }
    public void setAge(Integer age) {
        this.age = age;
    }
    @Override
    public String toString() {
        return "User [id=" + id + ", name=" + name + ", sex=" + sex + ", age=" + age + "]";
    }
}

4、创建UserMapper

package com.mapper;
import com.po.User;
public interface UserMapper {
    //增加用户
    void addUser(User user);    
    //删除用户
    void deleteUser(Integer id);
    //根据id查询用户
    User getUserById(Integer id);
    //更新用户
    void updateUser(User user);
}

5、创建insert_user存储过程

CREATE PROCEDURE insert_user(OUT u_id INTEGER,IN u_name VARCHAR(20),IN u_sex VARCHAR(20),IN u_age INTEGER)
BEGIN
INSERT INTO t_user (name,sex,age) VALUES (u_name,u_sex,u_age);
SET u_id=LAST_INSERT_ID();
END

6、在UserMapper.xml中调用insert_user存储过程

<!-- 添加用户 -->
    <insert id="addUser" parameterType="com.po.User" statementType="CALLABLE">
        {call insert_user(
        #{id,mode=OUT,jdbcType=INTEGER},#{name,mode=IN},#{sex,mode=IN},#{age,mode=IN})}
    </insert>

7、创建deleteUser存储过程

CREATE PROCEDURE deleteUser(IN u_id INTEGER)
BEGIN
    DELETE FROM t_user WHERE id=u_id;
END

8、在UserMapper.xml中调用deleteUser存储过程

<!-- 删除用户 -->
    <delete id="deleteUser" parameterType="Integer" statementType="CALLABLE">
        {call deleteUser(#{id,mode=IN})}
    </delete>

9、创建updateUser存储过程

CREATE PROCEDURE updateUser(IN u_id INTEGER,IN u_name VARCHAR(20),IN u_sex VARCHAR(20),IN u_age INTEGER)
BEGIN
    UPDATE t_user SET name=u_name,sex=u_sex,age=u_age WHERE id=u_id;
END

10、在UserMapper.xml中调用updateUser存储过程

<!-- 更新用户 -->
    <update id="updateUser" parameterType="user" statementType="CALLABLE">
        {call updateUser(#{id,mode=IN},#{name,mode=IN},#{sex,mode=IN},#{age,mode=IN})}
    </update>

11、创建getUserById存储过程

CREATE PROCEDURE getUserById(IN u_id INTEGER)
BEGIN
    SELECT id,name,sex,age FROM t_user WHERE id=u_id;
END

12、在UserMapper.xml中调用getUserById存储过程

<!-- 根据id查询用户 -->
    <select id="getUserById" parameterType="Integer" resultType="user" statementType="CALLABLE">
        {call getUserById(#{id,mode=IN})}
    </select>

13、创建UserDao

package com.dao;
import java.io.IOException;
import java.io.InputStream;
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;
import com.mapper.UserMapper;
import com.po.User;
public class UserDao {
    private SqlSession    session=null;
    //获取SqlSession对象
    public SqlSession getSqlSession() throws IOException {
        InputStream    is = Resources.getResourceAsStream("mybatis-config.xml");
        SqlSessionFactory sessionFactory=new SqlSessionFactoryBuilder().build(is);
        return sessionFactory.openSession();
    }
    @Test
    public void addUser() throws IOException {
        session=getSqlSession();
        UserMapper um=session.getMapper(UserMapper.class);
        User user=new User();    
        user.setName("jack");
        user.setSex("男");
        user.setAge(20);
        um.addUser(user);
        System.out.println("添加成功，增加的id="+user.getId());
        session.commit();
        session.close();
    }
    @Test
    public void getUserById() throws IOException {
        session=getSqlSession();
        UserMapper um=session.getMapper(UserMapper.class);
        User user=um.getUserById(2);
        session.close();
        System.out.println(user);
    }
    @Test
    public void updateUser() throws IOException {
        session=getSqlSession();
        UserMapper um=session.getMapper(UserMapper.class);
        User user=um.getUserById(2);
        user.setName("john");
        user.setSex("男");
        user.setAge(30);
        um.updateUser(user);
        session.commit();
        session.close();
    }
    @Test
    public void deleteUser() throws IOException {
        session=getSqlSession();
        UserMapper um=session.getMapper(UserMapper.class);
        um.deleteUser(3);
        session.commit();
        session.close();
    }
}