SpringBoot整合mybatis

这两天学习了一下SpringBoot的相关内容,记录一下

1.创建一个SpringBoot项目后,引入依赖(其中lombok插件需要自己安装)

<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>
   <groupId>com.jt.1902</groupId>
   <artifactId>springboot-mybatis</artifactId>
   <version>0.0.1-SNAPSHOT</version>

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

   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.1.3.RELEASE</version>
      <relativePath />
   </parent>

   <dependencies>
<dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
      </dependency>

<!--添加属性注入依赖 -->
<dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-configuration-processor</artifactId>
         <optional>true</optional>
      </dependency>

<!--引入插件lombok 自动的set/get/构造方法插件 -->
<dependency>
         <groupId>org.projectlombok</groupId>
         <artifactId>lombok</artifactId>
      </dependency>

<!--支持热部署 -->
<dependency>
         <groupId>org.springframework</groupId>
         <artifactId>springloaded</artifactId>
         <version>1.2.8.RELEASE</version>
      </dependency>

<dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-devtools</artifactId>
      </dependency>

<!--引入数据库驱动 -->
<dependency>
         <groupId>mysql</groupId>
         <artifactId>mysql-connector-java</artifactId>
         <scope>runtime</scope>
      </dependency>

<!--引入druid数据源 -->
<dependency>
         <groupId>com.alibaba</groupId>
         <artifactId>druid</artifactId>
         <version>1.1.12</version>
      </dependency>


      <!--spring整合mybatis-plus -->
<dependency>
         <groupId>com.baomidou</groupId>
         <artifactId>mybatis-plus-boot-starter</artifactId>
         <version>3.0.6</version>
      </dependency>
   </dependencies>

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

2.创建如下结构文件

SpringBoot整合mybatis

(1)表的结构:

DROP TABLE IF EXISTS `user`;
CREATE TABLE `user`  (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` char(40) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `age` int(11) NULL DEFAULT NULL,
  `sex` char(40) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  PRIMARY KEY (`id`) USING BTREE,
  INDEX `cc`(`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 56 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Compact;

SET FOREIGN_KEY_CHECKS = 1;

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