36,springboot集成mybatis xml方式

1，添加pom引用

<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.29</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</dependency>
</dependencies>

2 application.properties

mybatis.config-locations=classpath:mybatis/mybatis-config.xml
mybatis.mapper-locations=classpath:mybatis/mapper/*.xml
mybatis.type-aliases-package=com.taotao.xml.mapper  
# com.taotao.xml.mapper    mapper的包名
spring.datasource.driverClassName = com.mysql.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/demo?useUnicode=true&characterEncoding=utf-8
spring.datasource.username = root
spring.datasource.password =root

3 在resource目录下创建mybatis目录并创建mybatis-config.xml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>
    <settings>
        <setting name="callSettersOnNulls" value="true"/>
  <setting name="cacheEnabled" value="true"/>
        <setting name="lazyLoadingEnabled" value="true"/>
        <setting name="aggressiveLazyLoading" value="true"/>
        <setting name="multipleResultSetsEnabled" value="true"/>
  <setting name="useColumnLabel" value="true"/>
        <setting name="useGeneratedKeys" value="false"/>
        <setting name="autoMappingBehavior" value="PARTIAL"/>
        <setting name="defaultExecutorType" value="SIMPLE"/>
    <setting name="mapUnderscoreToCamelCase" value="true"/>
        <setting name="localCacheScope" value="SESSION"/>
        <setting name="jdbcTypeForNull" value="NULL"/>
    </settings>
 <typeAliases>
        <typeAlias alias="Integer" type="java.lang.Integer" />
        <typeAlias alias="Long" type="java.lang.Long" />
        <typeAlias alias="HashMap" type="java.util.HashMap" />
        <typeAlias alias="LinkedHashMap" type="java.util.LinkedHashMap" />
          <typeAlias alias="ArrayList" type="java.util.ArrayList" />
        <typeAlias alias="LinkedList" type="java.util.LinkedList" />
    </typeAliases>
</configuration>

4,mybatis目录下创建mapper目录存放mapper类接口文件

package com.taotao.xml.mapper;

import com.taotao.xml.model.User;
import org.apache.ibatis.annotations.Mapper;
import java.util.List;
@Mapper
public interface UserMapper {
    List<User> getAll();
     //方法名与xml的id相对应
    User getOne(Integer id);
    void insert(User user);
    void update(User user);
    void delete(@Param(“id”）Integer id);
}

5,model类文件

package com.taotao.xml.model;
import javax.persistence.*;
@Entity
@Table(name="good_infos")
public class User {
    @Id
    @GeneratedValue
    @Column(name="id")
    private  Integer id;
  @Column(name="name")
    private  String name;
    @Column(name="age")
    private  String  age;
    @Column(name="address")
    private  String address;
......

//省去set/get  方法

}

6，userMapper.xml 写在 resources ---->mybatis----mapper包下面

<?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.taotao.xml.mapper.UserMapper" ><!---mapper的方法类-->
  <resultMap id="BaseResultMap" type="com.taotao.xml.model.User" ><!--实体类全路径以及查询的表的表字段-->
        <id column="id" property="id" jdbcType="INTEGER" />
        <result column="name" property="name" jdbcType="VARCHAR" />
 <result column="age" property="age" jdbcType="VARCHAR" />
        <result column="address" property="address" jdbcType="VARCHAR"/>
    </resultMap>
  <sql id="Base_Column_List" >
        id, name, age, address
    </sql>  
<!---id=getAll 与mapper的方法名对应-->
    <select id="getAll" resultMap="BaseResultMap"  >
        SELECT
        <include refid="Base_Column_List" />
        FROM user
    </select>
<select id="getOne" parameterType="java.lang.Integer" resultMap="BaseResultMap" >
        SELECT
        <include refid="Base_Column_List" />
        FROM user
        WHERE id = #{id}
    </select>
<insert id="insert" parameterType="com.taotao.xml.model.User" >
        INSERT INTO
        user
        (id,name,age,address)
        VALUES
        (#{id},#{name}, #{age}, #{address})
    </insert>
 <update id="update" parameterType="com.taotao.xml.model.User" >
        UPDATE
        user
        SET
        <if test="name != null">name = #{name},</if>
        <if test="age != null">age = #{age},</if>
        address = #{address}
   WHERE
        id = #{id}
    </update>
    <delete id="delete" parameterType="java.lang.Integer" >
        DELETE FROM
      user
        WHERE
        id =#{id}
    </delete>
<!---- 补充 if 语句
 <select id="userLogins"  parameterType="java.lang.String" resultMap="BaseResultMap"  >
        SELECT
        <include refid="Base_Column_List" />
       FROM user_login
        <if test="username != null">WHERE  username = #{username}</if>
   </select>--->
</mapper>
```、
7，service

package com.taotao.xml.service;
import com.taotao.xml.mapper.UserMapper;
import com.taotao.xml.model.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UserService {
@Autowired
private UserMapper userMapper;
public List<User> getAll() {
List<User> users=userMapper.getAll();
return users;
}
public User getOne(Integer id) {
User user=userMapper.getOne(id);
return user;
}

public void insert(User user) {
    userMapper.insert(user);
}

public void update(User user) {
userMapper.update(user);
}
public void delete(Integer id) {
userMapper.delete(id);
}
}

8，controller

package com.taotao.xml.controller;
import com.taotao.xml.mapper.UserMapper;
import com.taotao.xml.model.User;
import com.taotao.xml.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
@RestController
public class UserController {
@Autowired
private UserService userService;
@RequestMapping("/getUsers")
public List<User> getUsers() {
List<User> users=userService.getAll();
return users;
}
@RequestMapping("/getUser")
public User getUser(Integer id) {
User user=userService.getOne(id);
return user;
}

@RequestMapping("/add")
public void save(User user) {
    userService.insert(user);
}

@RequestMapping(value="update")
public void update(User user) {
userService.update(user);
}
@RequestMapping(value="/delete/{id}")
public void delete(@PathVariable("id") Integer id) {
userService.delete(id);
}

}

<?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.sd.platform.platformservice.mapper.CompanyMapper">
   <select id="loadNameById" resultType="java.lang.String">
        select name from pf_platform_company where id = #{id}
    </select>
    <select id="loadByCompanyCode" resultType="com.sd.platform.platformservice.common.model.CompanyModel">
        select * from pf_platform_company where companycode = #{companycode}
    </select>
    <select id="loadNameByCompanyCode" resultType="java.lang.String">
        select name from pf_platform_company where companycode = #{companycode}
    </select>
   <insert id="mulitAdd">
        insert into pf_platform_company(name, companycode, pid, name, status, phone, prepared, remark, createtime)
        values
        <foreach collection="list" item="data" index="index" separator=",">
           (
              #{data.name}, #{data.companycode}, #{data.pid}, #{data.name}, #{data.status}, #{data.phone}
            , #{data.prepared}, #{data.remark}, #{data.createtime}
            )
        </foreach>
    </insert>
    
 <insert id="mulitSave">
        <foreach collection="list" item="data" index="index" separator=";">
          insert into pf_platform_company(name, companycode, pid, name, status, phone, prepared, remark, createtime)
        values(#{data.name}, #{data.companycode}, #{data.pid}, #{data.name}, #{data.status}, #{data.phone}
            , #{data.prepared}, #{data.remark}, #{data.createtime})
          ON DUPLICATE KEY UPDATE
       name = #{data.name}, status = #{data.status}, phone = #{data.phone}, prepared = #{data.prepared}
            , remark = #{data.remark}
        </foreach>
    </insert>
 <delete id="mulitDelById">
        delete from pf_platform_company where id in
        (
        <foreach collection="list" item="id" index="index" separator=",">
          #{id}
        </foreach>
        )
    </delete>

  <select id="list" resultType="com.sd.platform.platformservice.common.model.CompanyModel">
        select * from pf_platform_company where 1 = 1
        <if test="search.companycode != null and search.companycode != ''">
          <![CDATA[and companycode =#{search.companycode}]]>
        </if>
        <if test="search.name != null and search.name != ''">
            <![CDATA[and name =#{search.name}]]>
        </if>
 <if test="search.state != null">
            <![CDATA[and status =#{search.state}]]>
        </if>
        order by id asc
    </select>    
</mapper>

或者

<?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.sd.lottery.dataservice.mapper.GameChangLongMapper">


    <select id="rtlist" resultType="com.sd.lottery.dataservice.pojo.GameChangLongPojo">
        SELECT  * from  kj_game_changlong  where 1 = 1
   
      <if test="date != null">
            <![CDATA[ and updatetime =#{date}]]>
        </if>
   <if test="playname != null and playname  != ''">
            <![CDATA[and playname =#{playname}]]>
        </if>
    </select>
</mapper>
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