本文共 3301 字，大约阅读时间需要 11 分钟。

SpringMVC?????????

??SpringMVC????

SpringMVC?Spring??????Web????????????MVC???Web??????????????MVC???????????????????????

?????

• ??????????????????????URL???????????
• ?????????????????????????
• RESTful?????RESTful???API???????API???
• ?????????????????????

????SpringMVC???????

1. ????

??Spring Initializer??????Spring Boot????????????Spring Web MVC?Thymeleaf?

2. ??????

?????????????

project
??? src
?   ??? main
?   ?   ??? java
?   ?   ?   ??? com
?   ?   ?       ??? example
?   ?   ?           ??? controller
?   ?   ??? resources
?   ?       ??? static
?   ?       ??? templates
?   ??? test

3. ????

???? pom.xml ?????????

   
    
    
        
     
      org.springframework
     
        
     
      spring-webmvc
     
        
     
      5.1.5.RELEASE
     
    
    
    
    
        
     
      javax.servlet
     
        
     
      javax.servlet-api
     
        
     
      3.0.1
     
        
     
      provided
     
    
    
    
    
        
     
      javax.servlet
     
        
     
      javax.servlet.jsp
     
        
     
      2.2.1
     
        
     
      provided
     
    
    
    
    
        
     
      javax.servlet
     
        
     
      jstl
     
        
     
      1.2
     
        
     
      provided
     
    
    
   

4. ??DispatcherServlet

?web.xml ???DispatcherServlet?

   
    
    
     Spring MVC Application
    
    
    
        
     
      springmvc
     
        
     
      org.springframework.web.servlet.DispatcherServlet
     
        
     
            
      
       contextConfigLocation
      
            
      
       classpath:springmvc-servlet.xml
      
        
     
    
    
    
    
        
     
      springmvc
     
        
     
      /
     
    
    
   

5. ??????????

?????????SpringMVC?Controller???

package com.example.springmvctest.controller;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;
public class MyController implements Controller {
    @Override
    public ModelAndView handleRequest(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws Exception {
        ModelAndView mav = new ModelAndView();
        mav.addObject("test", "Hello SpringMVC world!");
        mav.setViewName("test");
        return mav;
    }
}

6. ??SpringMVC?????

?resources?????springmvc-servlet.xml?

7. ???????

?springmvc-servlet.xml???InternalResourceViewResolver?

8. ??JSP??

??test.jsp?

    
    
   
    ${test}

??SpringMVC?????????

1. DispatcherServlet?url-pattern??

• /???????name????/xxxx
• *.do???????name????/xxxx.do

2. ????name???

• ?DispatcherServlet?url-pattern??
• ???

3. ??????????ModelAndView

• ModelAndView???????Model?View
• ModelAndView????addObject?????????setViewName??????
• ???????

  ModelAndView mav = new ModelAndView();
  mav.addObject("user", user);
  mav.setViewName("user_profile");
  return mav;

4. ???????

??DispatcherServlet?????????SpringMVC???????

1. ????????

?web.xml???contextConfigLocation?

   
    
    
     contextConfigLocation
    
    
    
     classpath:springmvc-servlet.xml
    
   

2. ??????

• resources????classpath:resources/springmvc-servlet.xml
• resources????????classpath:resources/spring/springmvc-servlet.xml
• WEB-INF????/WEB-INF/springmvc-servlet.xml