Springboot 集成Mybatis 使用XML

一、新建表

CREATE TABLE `suphowe`.`Untitled`  (
  `id` int(11) NOT NULL,
  `user` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `name` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `tel` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

插入数据

二、Springboot配置

1.添加依赖

<!-- mybatis -->
<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>1.3.0</version>
</dependency>

2.配置信息

src\main\resources\mybatis\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>
    <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>

application.properties

#################### 数据库配置 ################################
spring.primary.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.primary.datasource.url=jdbc:mysql://127.0.0.1:3306/suphowe?useUnicode=true&characterEncoding=utf8
spring.primary.datasource.username=root
spring.primary.datasource.password=root
 
# ===================mybatis========================
mybatis.config-locations=classpath:mybatis/mybatis-config.xml
mybatis.mapper-locations=classpath:mapper/*.xml
mybatis.type-aliases-package=com.soft.entity

src\main\resources\mapper\TestMapper.xml

<?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.soft.dao.MybatisTestMapper">
    <select id="findAll" resultType="com.soft.entity.Test">
        select * from sys_test
    </select>
</mapper>

三、Java代码

Test.java

package com.soft.entity;
 
public class Test {
 
    private Integer id;
 
    private String user;
 
    private String name;
 
    private String tel;
 
    public Integer getId() {
        return id;
    }
 
    public void setId(Integer id) {
        this.id = id;
    }
 
    public String getUser() {
        return user;
    }
 
    public void setUser(String user) {
        this.user = user;
    }
 
    public String getName() {
        return name;
    }
 
    public void setName(String name) {
        this.name = name;
    }
 
    public String getTel() {
        return tel;
    }
 
    public void setTel(String tel) {
        this.tel = tel;
    }
 
    @Override
    public String toString() {
        return "Test{" +
                "id=" + id +
                ", user='" + user + '\'' +
                ", name='" + name + '\'' +
                ", tel='" + tel + '\'' +
                '}';
    }
}

MybatisTestMapper.java

package com.soft.dao;
 
import com.soft.entity.Test;
import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Component;
 
import java.util.List;
 
@Mapper
@Component
public interface MybatisTestMapper {
 
    List<Test> findAll();
}

IMybatisServiceTest.java

package com.soft.service;
 
import com.soft.entity.Test;
 
import java.util.List;
 
public interface IMybatisServiceTest {
 
    List<Test> findAll();
}

MybatisTestServiceImpl.java

package com.soft.service.impl;
 
import com.soft.dao.MybatisTestMapper;
import com.soft.entity.Test;
import com.soft.service.IMybatisServiceTest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
 
import java.util.List;
 
@Service
public class MybatisTestServiceImpl implements IMybatisServiceTest {
 
    @Autowired
    private MybatisTestMapper mybatisTestMapper;
 
    @Override
    public List<Test> findAll(){
        return mybatisTestMapper.findAll();
    }
}

MybatisTestController.java

package com.soft.controller;
 
import com.google.gson.Gson;
import com.soft.entity.Test;
import com.soft.entity.User;
import com.soft.service.IMybatisServiceTest;
import com.soft.util.BsUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
 
import java.util.HashMap;
import java.util.List;
 
@RestController
@Api(value = "Mybatis测试,Xml")
@RequestMapping(value = "/mybatis")
public class MybatisTestController {
 
    @Autowired
    private IMybatisServiceTest mybatisServiceTest;
 
    @Autowired
    public BsUtil bsUtil;
 
    @RequestMapping(value = "/findAll", method = RequestMethod.POST)
    @ApiOperation(value = "Mybatis查询测试", notes = "")
    public String findUser() {
        List<Test> list = mybatisServiceTest.findAll();
        HashMap<String, Object> result = new HashMap<>();
        bsUtil.createReturnMsg(result, "0", list);
        return new Gson().toJson(result);
    }
}