准备工具：IDEA jdk1.8 Navicat for MySQL Postman
一、新建Project
选择依赖：mybatis Web Mysql JDBC
项目结构
pom依赖：
1 <?xml version="1.0" encoding="UTF-8"?> 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> 4 <modelVersion>4.0.0</modelVersion> 5 <parent> 6 <groupId>org.springframework.boot</groupId> 7 <artifactId>spring-boot-starter-parent</artifactId> 8 <version>2.1.7.RELEASE</version> 9 <relativePath/> <!-- lookup parent from repository --> 10 </parent> 11 <groupId>com.beilin</groupId> 12 <artifactId>SpringBoot-Mybatis</artifactId> 13 <version>0.0.1-SNAPSHOT</version> 14 <name>SpringBoot-Mybatis</name> 15 <description>Demo project for Spring Boot</description> 16 17 <properties> 18 <java.version>1.8</java.version> 19 </properties> 20 <dependencies> 21 <dependency> 22 <groupId>org.springframework.boot</groupId> 23 <artifactId>spring-boot-starter-jdbc</artifactId> 24 </dependency> 25 <dependency> 26 <groupId>org.springframework.boot</groupId> 27 <artifactId>spring-boot-starter-web</artifactId> 28 </dependency> 29 30 <!--导入mybatis依赖--> 31 <dependency> 32 <groupId>org.mybatis.spring.boot</groupId> 33 <artifactId>mybatis-spring-boot-starter</artifactId> 34 <version>2.1.0</version> 35 </dependency> 36 37 <!--导入mysql依赖--> 38 <dependency> 39 <groupId>mysql</groupId> 40 <artifactId>mysql-connector-java</artifactId> 41 <version>5.1.47</version> 42 </dependency> 43 44 <dependency> 45 <groupId>org.springframework.boot</groupId> 46 <artifactId>spring-boot-starter-test</artifactId> 47 <scope>test</scope> 48 </dependency> 49 </dependencies> 50 51 <build> 52 <plugins> 53 <plugin> 54 <groupId>org.springframework.boot</groupId> 55 <artifactId>spring-boot-maven-plugin</artifactId> 56 </plugin> 57 </plugins> 58 </build> 59 60 </project>
二、创建user表
三、项目配置
1 .在com.beilin下创建controller包、mapper包，entity包；在resources文件夹下创建mapping文件夹（用来存放mapper映射的xml文件）
2 .添加properties配置文件：application.properties
1 #配置mybatis 2 3 #配置xml映射路径 4 mybatis.mapper-locations=classpath:mapping/*.xml 5 #配置实体类别名 6 mybatis.type-aliases-package=com.beilin.entity 7 #开启驼峰命名法 8 mybatis.configuration.map-underscore-to-camel-case=true 9 10 #配置Mysql连接 11 spring.datasource.url=jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=utf8&serverTimezone=UTC 12 s