SpringBoot学习笔记（二）——整合MyBatis（利用IDEA）

1.利用IDEA创建SpringBoot项目，并添加MyBatis相关依赖

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2.查看目录结构及pom.xml

pom.xml（根据我们创建项目时候选择的Dependecies已经引入相关包）

<?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 http://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>2.1.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo0222</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo0222</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</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>2.0.0</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>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

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3.参考我的博客（mybatis-generator自动生成代码插件使用详解）https://blog.csdn.net/Peacock__/article/details/87880157，生成MyBatis逆向工程文件

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4.修改application.properties名称为application.yml，并添加配置内容

server:
    port: 9000

spring:
    datasource:
        username: root
        password: mysql
        url: jdbc:mysql://localhost:3306/factory?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&serverTimezone=Asia/Shanghai
        driver-class-name: com.mysql.cj.jdbc.Driver

mybatis:
    mapper-locations: classpath:mapping/*Mapper.xml
    type-aliases-package: com.example.demo0222

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5.启动类添加@MapperScan("com.example.demo0222.dao")，用于扫描Mapper文件

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6.编写测试类，调用数据库

运行结果如图：

大功告成！