https://www.bilibili.com/video/BV1hE411F77L ### SSM框架整合 Spring + Spring MVC + MyBatis Spring MVC 负责实现 MVC 设计模式，MyBatis 负责数据持久层，Spring 负责管理 Spring MVC 和 MyBatis 相关对象的创建和依赖注入。 - 创建 Maven 工程，pom.xml ```xml org.springframework spring-webmvc 5.0.11.RELEASE org.springframework spring-jdbc 5.0.11.RELEASE org.springframework spring-aop 5.0.11.RELEASE org.springframework spring-aspects 5.0.11.RELEASE org.mybatis mybatis 3.4.5 org.mybatis mybatis-spring 1.3.1 mysql mysql-connector-java 8.0.11 c3p0 c3p0 0.9.1.2 jstl jstl 1.2 javax.servlet javax.servlet-api 3.1.0 org.projectlombok lombok 1.18.6 provided ``` - web.xml 中配置 SpringMVC、Spring、字符编码过滤器、加载静态资源。 ```xml

Archetype Created Web Application

contextConfigLocation

classpath:spring.xml

org.springframework.web.context.ContextLoaderListener

dispatcherServlet

org.springframework.web.servlet.DispatcherServlet

contextConfigLocation

classpath:springmvc.xml

dispatcherServlet

characterEncodingFilter

org.springframework.web.filter.CharacterEncodingFilter

encoding

UTF-8

characterEncodingFilter

default

*.js

default

*.css

default

*.jpg

``` - 在 spring.xml 中配置 MyBatis 和 Spring 的整合。 ```xml ``` - config.xml 配置一些 MyBatis 辅助信息，比如打印 SQL 等。 ```xml ``` - 配置 springmvc.xml ```xml

``` - 实体类 ```java package com.southwind.entity; import lombok.Data; @Data public class User { private long id; private String name; private String password; private double score; } ``` - UserRepository ```java package com.southwind.repository; import com.southwind.entity.User; import java.util.List; public interface UserRepository { public List findAll(); } ``` - UserRepository.xml ```xml ``` - UserService ```java package com.southwind.service; import com.southwind.entity.User; import java.util.List; public interface UserService { public List findAll(); } ``` - UserServiceImpl ```java package com.southwind.service.impl; import com.southwind.entity.User; import com.southwind.repository.UserRepository; import com.southwind.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service public class UserServiceImpl implements UserService { @Autowired private UserRepository userRepository; @Override public List findAll() { return userRepository.findAll(); } } ``` - UserHandler ```java package com.southwind.controller; import com.southwind.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; @Controller @RequestMapping("/user") public class UserHandler { @Autowired private UserService userService; @GetMapping("/findAll") public ModelAndView findAll(){ ModelAndView modelAndView = new ModelAndView(); modelAndView.setViewName("index"); modelAndView.addObject("list",userService.findAll()); return modelAndView; } } ```