其他
Spring Boot + MyBatis 多模块项目搭建教程
来源：https://mp.weixin.qq.com/s/A39tbLtO_5TV50vSraF3AA
1、开发工具及系统环境
IDE：IntelliJ IDEA 2018.2
系统环境：mac OSX
2、项目目录结构
biz层：业务逻辑层
dao层：数据持久层
web层：请求处理层
正文
搭建步骤
1、创建父工程
2、创建子模块
@SpringBootApplicationpublic class BetaWebApplication {
public static void main(String[] args) { SpringApplication.run(BetaWebApplication.class, args); }}@RestController@RequestMapping("demo")public class DemoController {
@GetMapping("test") public String test() { return "Hello World!"; }}4、配置模块间的依赖关系
<dependencyManagement> <dependencies> <dependency> <groupId>com.yibao.beta</groupId> <artifactId>beta-biz</artifactId> <version>${beta.version}</version> </dependency> <dependency> <groupId>com.yibao.beta</groupId> <artifactId>beta-dao</artifactId> <version>${beta.version}</version> </dependency> <dependency> <groupId>com.yibao.beta</groupId> <artifactId>beta-web</artifactId> <version>${beta.version}</version> </dependency> </dependencies></dependencyManagement><dependencies> <dependency> <groupId>com.yibao.beta</groupId> <artifactId>beta-biz</artifactId> </dependency></dependencies><dependencies> <dependency> <groupId>com.yibao.beta</groupId> <artifactId>beta-dao</artifactId> </dependency></dependencies>public interface DemoService { String test();}@Servicepublic class DemoServiceImpl implements DemoService {
@Override public String test() { return "test"; }}package com.yibao.beta.web.controller;@RestController@RequestMapping("demo")public class DemoController {
@Autowired private DemoService demoService;
@GetMapping("test") public String test() { return demoService.test(); }}***************************APPLICATION FAILED TO START***************************
Description:Field demoService in com.yibao.beta.web.controller.DemoController required a bean of type 'com.yibao.beta.biz.service.DemoService' that could not be found.
Action:Consider defining a bean of type 'com.yibao.beta.biz.service.DemoService' in your configuration.package com.yibao.beta.web;
@SpringBootApplication(scanBasePackages = "com.yibao.beta")@MapperScan("com.yibao.beta.dao.mapper")public class BetaWebApplication {
public static void main(String[] args) { SpringApplication.run(BetaWebApplication.class, args); }}6、集成Mybatis
dependencyManagement> <dependencies> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.2</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.16.22</version> </dependency> </dependencies></dependencyManagement><dependencies> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </dependency></dependencies>spring.datasource.driverClassName = com.mysql.jdbc.Driverspring.datasource.url = jdbc:mysql://192.168.1.1/test?useUnicode=true&characterEncoding=utf-8spring.datasource.username = testspring.datasource.password = 123456
mybatis.mapper-locations = classpath:mybatis/*.xmlmybatis.type-aliases-package = com.yibao.beta.dao.entity
package com.yibao.beta.biz.service.impl;
@Servicepublic class DemoServiceImpl implements DemoService {
@Autowired private UserMapper userMapper;
@Override public String test() { UserDO user = userMapper.selectByPrimaryKey(1); return user.toString(); }}APPLICATION FAILED TO START***************************
Description:Field userMapper in com.yibao.beta.biz.service.impl.DemoServiceImpl required a bean of type 'com.yibao.beta.dao.mapper.UserMapper' that could not be found.
Action:Consider defining a bean of type 'com.yibao.beta.dao.mapper.UserMapper' in your configuration.package com.yibao.beta.web;
@SpringBootApplication(scanBasePackages = "com.yibao.beta")@MapperScan("com.yibao.beta.dao.mapper")public class BetaWebApplication {
public static void main(String[] args) { SpringApplication.run(BetaWebApplication.class, args); }}四、总结
五、未提到的坑
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