Spring MVC教程四

好的！本节我们介绍SpringMVC使用servlet原生api作为参数，SpringMVC处理模型数据。

SpringMVC使用servlet原生api作为参数

SpringMVC的Handler方法可以接受参数：

1. HttpServletRequest；
2. HttpServletResponse;
3. HttpSession；
4. java.security.Principal；
5. Local；
6. InputStream；
7. OutputStream；
8. Reader;
9. Writer;

添加servlet依赖：

javax.servletservlet-api2.5
 
 

controller:

   @RequestMapping("/testServletAPI")public void testServletAPI(HttpServletRequest request, HttpServletResponse response, Writer out) throws IOException {System.out.println("testServletAPI, "+request+" , "+response );out.write("hello SpringMVC");// return "success";}
 

html:

testServletAPI
 

结果：

处理数据模型ModelAndView

ModelAndView既包含视图信息，也包含模型数据信息。
controller:

@RequestMapping("/testModelAndView")public ModelAndView testModelAndView(){String viewName = "success";ModelAndView modelAndView=new ModelAndView(viewName);modelAndView.addObject("time",new Date());return modelAndView;}
 

index.html:

testModelAndView
 

success.html:

 success

time:${requestScope.time}
 
 
 

Map

通过map传递数据
controller:

@RequestMapping("/testMap")public String testMap(Map map){map.put("names", Arrays.asList("tom","Jerry","Mike"));return "success";}
 

index.html:

testMap
 

success.html:

 success

time:${requestScope.time}

names:${requestScope.names}