SPRING MVC3.2案例讲解--SPRING MVC3的各种URL映射+JSP视图跳转(3)

本章节主要讲解使用springmvc进行controller到view的转向，涉及代码包含JSP视图，

 

 

 

和上一章节最大的配置点不同是：

 

无任何视图指向的Controller   @ResponseBody是关键代码，表示直接返回内容，不转向JSP视图

@Controllerpublic class MappingController {@RequestMapping("/mapping/path")public @ResponseBody String byPath() {return "Mapped by path!";}}

 

指向具体视图的Controller，无@ResponseBody，表示会指向某个JSP视图

@Controller@RequestMapping("/views/*")public class ViewsController {@RequestMapping(value="html", method=RequestMethod.GET)public String prepare(Model model) {model.addAttribute("foo", "bar");model.addAttribute("fruit", "apple");return "views/html";}

 

基于视图转向的四种用法：

1.自己制定转向的视图

//  http://127.0.0.1:8010/views/html --->对应 views/html.jsp@RequestMapping(value="html", method=RequestMethod.GET)public String prepare(Model model) {model.addAttribute("foo", "bar");model.addAttribute("fruit", "apple");return "views/html";}

 

 

2.spring指向默认的视图，通过org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator实现默认视图的转向，见日志信息：

DEBUG DispatcherServlet Unable to locate RequestToViewNameTranslator with name 'viewNameTranslator': using default [org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator@55a58f]

//  http://127.0.0.1:8010/views/viewName --->对应 views/viewName.jsp@RequestMapping(value="/viewName", method=RequestMethod.GET)public void usingRequestToViewNameTranslator(Model model) {model.addAttribute("foo", "bar");model.addAttribute("fruit", "apple");}

 

3.URI的 @PathVariable 的获取，注意参数名称必须一致！如：

 

//  http://127.0.0.1:8010/views/pathVariables/bar/apple --->对应 views/html.jsp@RequestMapping(value="pathVariables/{foo}/{fruit}", method=RequestMethod.GET)public String pathVars(@PathVariable String foo, @PathVariable String fruit) {// No need to add @PathVariables "foo" and "fruit" to the model// They will be merged in the model before renderingreturn "views/html";}

 

 

 

4. 利用URL的@PathVariable给JAVABEAN赋值 

 

//http://127.0.0.1:8010/views/dataBinding/bar/apple --->对应 views/dataBinding.jsp@RequestMapping(value="dataBinding/{foo}/{fruit}", method=RequestMethod.GET)public String dataBinding(@Valid JavaBean javaBean, Model model) {// JavaBean "foo" and "fruit" properties populated from URI variables return "views/dataBinding";}

 

public class JavaBean {@NotNullprivate String foo;@NotNullprivate String fruit;//注意此处有GET SET 方法，篇幅有限，不在文章中赘诉}

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