关于Mybatis 中使用Mysql存储过程的方法

##1.有学生表student（id,name,age,money）
##2.创建查询学生表信息的存储过程：

delimiter |
 create Procedure showAllstu()
 BEGIN
  SELECT * FROM student ORDER BY id DESC LIMIT 6;
 END
delimiter

##2.创建(通过学生id)删除记录的存储过程：
```
delimiter |
 create Procedure delById(d int(11))
 BEGIN
  delete from student where id=d;
 END
delimiter

##3.maven中创建项目：（略）

 //pox.xml 配置：
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.metar</groupId>
  <artifactId>Mybatis-mysql</artifactId>
  <packaging>war</packaging>
  <version>1.0</version>
  <name>Mybatis-mysql Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
  <dependency>
   <groupId>junit</groupId>
   <artifactId>junit</artifactId>
   <version>4.12</version>
   <scope>test</scope>
  </dependency>
  <dependency>
   <groupId>org.projectlombok</groupId>
   <artifactId>lombok</artifactId>
   <version>1.16.20</version>
   <scope>provided</scope>
  </dependency>
   <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.4.6</version>
   </dependency>
   <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>6.0.6</version>
   </dependency>
   <dependency>
   <groupId>ch.qos.logback</groupId>
   <artifactId>logback-classic</artifactId>
   <version>1.2.3</version>
   <scope>test</scope>
   </dependency>
  </dependencies>
  <build>
   <finalName>${project.artifactId}</finalName>
   <testSourceDirectory>src/test/java</testSourceDirectory>
   <sourceDirectory>src/main/java</sourceDirectory>
   <!-- 处理无法加载资源配置文件 -->
   <resources>
    <resource>
     <directory>src/main/java</directory>
     <includes>
      <include>**/*.xml</include>
      <include>**/*.properties</include>
     </includes>
    </resource>
    <resource>
     <directory>src/main/resources</directory>
     <includes>
      <include>**/*.xml</include>
      <include>**/*.properties</include>
     </includes>
    </resource>
   </resources>
  </build>
 </project>

##4.链接数据库入口配置(略)，配置：mybatis-config.xml:

 <?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>
  <!-- 这是资源数据库的配置入口 -->
  <properties resource="db.properties"/>
  <!-- 开启日志设置 -->
  <settings>
   <setting name="logPrefix" value="dao."/>
  </settings>
  <typeAliases>
   <!-- 配置模型类的别名 -->
   <!--<typeAlias type="com.fz.entity.Student" alias="st"/>-->
   <!-- 配置指定包下的所有类别名 //com.fz.entity包下的模型类小字别名 Book.java book就是别名-->
   <package name="com.fz.entity"/>
  </typeAliases>
  <environments default="development">
   <environment id="development">
    <transactionManager type="JDBC"/>
    <dataSource type="POOLED">
     <property name="driver" value="${db.driver}"/>
     <property name="url" value="${db.url}"/>
     <property name="username" value="${db.user}"/>
     <property name="password" value="${db.password}"/>
    </dataSource>
   </environment>
  </environments>
  <mappers>
   <!--<mapper class="com.fz.mapper.StudentMapper"/>-->
   <package name="com.fz.mapper"/>
  </mappers>
 </configuration>

##5.创建实体类对象：

 //包：com/fz/entity/Student
 @Data
 public class Student {
  private int id;
  private String name;
  private int age;
  private double money;
 }

 ##6.创建StudentMapper 接口类和StudentMapper.xml配置；

 // StudentMapper 接口类 
 public interface StudentMapper {
  //存储过程查询6条记录；
  public List<Student> query();
  //存储过程删除一条记录（通过id）
  public int delById(int id);
 }
 //StudentMapper.xml配置
 ```
 <?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="com.fz.mapper.StudentMapper">
  <select id="query" resultType="student">
   {call showAllstu()}
  </select>
  <delete id="delById" parameterType="int">
   {call delById(#{id})}
  </delete>
 </mapper>

 ##7.测试 类：
 
 //test/java/com/Demo01
 package com;
 import com.fz.entity.Student;
 import com.fz.mapper.StudentMapper;
 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.After;
 import org.junit.Before;
 import org.junit.Test;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.List;
 public class Demo01 {
   protected SqlSessionFactory sf;
   protected SqlSession ss;
   @Test
   public void test(){
    StudentMapper sdd = this.ss.getMapper(StudentMapper.class);
    List<Student> atd = sdd.query();
    for (Student sd:atd){
     System.out.println(sd);
    }
    sdd.delById(18);
   }
   @Before
   public void init(){
    InputStream is=null;
    try {
     is= Resources.getResourceAsStream("mybatis-config.xml");
     this.sf=new SqlSessionFactoryBuilder().build(is);
     this.ss=this.sf.openSession();
    } catch (IOException e) {
     e.printStackTrace();
    }
   }
   @After
   public void close(){
    this.ss.commit();
    this.ss.close();
   }
 }

create procedure sp_name()
begin
.........
end