SSM入门-SSM整合（注解开发）

SSM整合，基于SSM入门-Spring与MyBatis整合

新增 依赖 SpringMvcConfig.java controller servletConfig.java

    4.0.0

    org.example
    Spring02_Test
    1.0-SNAPSHOT

    
        8
        8
    

    
        
            mysql
            mysql-connector-java
            5.1.47
        

        
            com.alibaba
            druid
            1.1.16
        

        
            org.mybatis
            mybatis
            3.5.6
        

        
            org.springframework
            spring-jdbc
            5.2.10.RELEASE
        

        
            org.mybatis
            mybatis-spring
            2.0.2
        

        
            org.springframework
            spring-context
            5.2.10.RELEASE
        

        
        
            org.springframework
            spring-webmvc
            5.2.10.RELEASE
        

        
            org.springframework
            spring-test
            5.2.10.RELEASE
        

        
        
            com.fasterxml.jackson.core
            jackson-databind
            2.9.8
        


        
        
            javax.servlet
            javax.servlet-api
            3.1.0
            provided
        



    

@Configuration  //设置为配置文件
@ComponentScan("com.xxxIt.controller")  //扫包mvc处理controller
@EnableWebMvc   //加入参数才能转换
public class SpringMvcConfig {
}

package com.xxxIt.config;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

public class ServletConfig extends AbstractAnnotationConfigDispatcherServletInitializer {
    @Override
    protected Class[] getRootConfigClasses() {
        return new Class[]{SpringConfig.class};
    }

    @Override
    protected Class[] getServletConfigClasses() {
        return new Class[]{SpringMvcConfig.class};
    }

    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }
}

package com.xxxIt.controller;

import com.xxxIt.pojo.User;
import com.xxxIt.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController     //替代@Controller和ResponseBody
@RequestMapping("/users")   //所有请求的路径前缀
public class UserController {

    @Autowired  //自动装配
    private UserService userService;

    @GetMapping("/{id}")    //路径参数
    public User selectById(@PathVariable Integer id){
        return userService.selectById(id);
    }

}