【Spring Boot】010-Spring Boot整合Mybatis

逃离我推掉我的手 2023-10-05 10:09 87阅读 0赞

> 最新更新：2020年9月22日08:19:38

**目录**

一、简单环境搭建

1、新建项目

第一步：创建spring boot项目，填写相关配置信息

第二步：导入相关包

2、导入Maven依赖

3、在配置文件application.properties中配置数据库

4、修改测试类简单测试是否能够成功获取数据源和连接

5、测试结果

二、使用演示

第一步：导入lombok坐标

第二步：新建Account类

第三步：新建AccountMapper接口

第四步：新建AccountMapper.xml文件

第五步：修改配置文件application.properties

第六步：新建AccountService接口

第七步：新建AccountMapper接口实现类

第八步：新建AccountController类

第九步：StudySpringDataForMybatisApplication启动类代码（看注释）

第十步：运行测试

文件位置图：

pom.xml内容：

三、源代码

--------------------

# 一、简单环境搭建 #

## 1、新建项目 ##

### 第一步：创建spring boot项目，填写相关配置信息 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70][]

### 第二步：导入相关包 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 1][]

## 2、导入Maven依赖 ##

<dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starter</artifactId>
        <version>2.1.3</version>
    </dependency>

## 3、在配置文件application.properties中配置数据库 ##

## 4、修改测试类简单测试是否能够成功获取数据源和连接 ##

package com.zibo;
    
    import org.junit.jupiter.api.Test;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    
    import javax.sql.DataSource;
    import java.sql.SQLException;
    
    @SpringBootTest
    class StudySpringDataForMybatisApplicationTests {
    
        @Autowired
        DataSource dataSource;
    
        @Test
        void contextLoads() throws SQLException {
            System.out.println("getClass：" + dataSource.getClass());
            System.out.println("getConnection：" + dataSource.getConnection());
        }
    
    }

## 5、测试结果 ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 2][]

# 二、使用演示 #

### 第一步：导入lombok坐标 ###

<dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
            </dependency>

### 第二步：新建Account类 ###

package com.zibo.pojo;
    
    import lombok.AllArgsConstructor;
    import lombok.Data;
    import lombok.NoArgsConstructor;
    
    @Data
    @NoArgsConstructor
    @AllArgsConstructor
    public class Account {
        private Integer id;
        private String name;
        private Double money;
    }

### 第三步：新建AccountMapper接口 ###

package com.zibo.mapper;
    
    import com.zibo.pojo.Account;
    import org.apache.ibatis.annotations.Mapper;
    import org.springframework.stereotype.Repository;
    
    import java.util.List;
    
    //这个注解表示这是一个mybatis的mapper类
    @Mapper
    @Repository
    public interface AccountMapper{
    
        List<Account> findAll();
    
        Account findById(int id);
    
        int addAccount(Account account);
    
        int updateAccount(Account account);
    
        int deleteAccount(int id);
    
    
    }

### 第四步：新建AccountMapper.xml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="com.zibo.mapper.AccountMapper">
        
        
        <select id="findAll" resultType="Account">
            select * from account;
        </select>
    
        <select id="findById" parameterType="int" resultType="Account">
            select * from account where id = #{id}；
        </select>
    
        <insert id="addAccount" parameterType="Account">
            insert into account (id, name, money) VALUES (#{id},#{name},#{money});
        </insert>
    
        <update id="updateAccount" parameterType="Account">
            update account set name = #{name},money = #{money} where id = #{id};
        </update>
    
        <delete id="deleteAccount" parameterType="int">
            delete from account WHERE id = #{id};
        </delete>
    </mapper>

### 第五步：修改配置文件application.properties ###

spring.datasource.username=root
    spring.datasource.password=zibo15239417242
    spring.datasource.url=jdbc:mysql://localhost:3306/zibo?serverTimezone=UTC
    spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
    
    # 整合mybatis
    mybatis.type-aliases-package=com.zibo.pojo
    mybatis.mapper-locations=classpath:mybatis/mapper/*.xml

### 第六步：新建AccountService接口 ###

package com.zibo.service;
    
    import com.zibo.pojo.Account;
    
    import java.util.List;
    
    public interface AccountService {
        List<Account> findAll();
    
        Account findById(int id);
    
        int addAccount(Account account);
    
        int updateAccount(Account account);
    
        int deleteAccount(int id);
    }

### 第七步：新建AccountMapper接口实现类 ###

package com.zibo.service;
    
    import com.zibo.mapper.AccountMapper;
    import com.zibo.pojo.Account;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    import java.util.List;
    
    @Service
    public class AccountServiceImpl implements AccountService {
    
        @Autowired
        AccountMapper accountMapper;
    
        @Override
        public List<Account> findAll() {
            return accountMapper.findAll();
        }
    
        @Override
        public Account findById(int id) {
            return accountMapper.findById(id);
        }
    
        @Override
        public int addAccount(Account account) {
            return accountMapper.addAccount(account);
        }
    
        @Override
        public int updateAccount(Account account) {
            return accountMapper.updateAccount(account);
        }
    
        @Override
        public int deleteAccount(int id) {
            return accountMapper.deleteAccount(id);
        }
    }

### 第八步：新建AccountController类 ###

package com.zibo.controller;
    
    import com.zibo.pojo.Account;
    import com.zibo.service.AccountService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import java.util.List;
    
    @RestController
    public class AccountController {
    
        @Autowired
        AccountService accountService;
    
        @GetMapping("/findAll")
        public List<Account> findAll(){
            return accountService.findAll();
        }
    
    }

### 第九步：StudySpringDataForMybatisApplication启动类代码（看注释） ###

package com.zibo;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    @SpringBootApplication
    //@MapperScan("com.zibo.mapper")//扫描mapper
    public class StudySpringDataForMybatisApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(StudySpringDataForMybatisApplication.class, args);
        }
    
    }

### 第十步：运行测试 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 3][]

### 文件位置图： ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 4][]

备注：就测试一个方法吧；

### pom.xml内容： ###

<?xml version="1.0" encoding="UTF-8"?>
    <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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.3.3.RELEASE</version>
            <relativePath/> 
        </parent>
        <groupId>com.zibo</groupId>
        <artifactId>study_spring_data_for_mybatis</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>StudySpringDataForMybatis</name>
        <description>Demo project for Spring Boot</description>
    
        <properties>
            <java.version>1.8</java.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>2.1.3</version>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-jdbc</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </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>
                <exclusions>
                    <exclusion>
                        <groupId>org.junit.vintage</groupId>
                        <artifactId>junit-vintage-engine</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    </project>

# 三、源代码 #

链接：https://pan.baidu.com/s/17YUn1yEA-U4Ju-a20EjuFg  
提取码：zibo

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