springmvc之获取参数的方法(必看)

1、导包，四大核心包，一个切面包（AOP），logging,web,springmvc

2、配置文件，核心代码如下：

web.xml

  springDispatcherServlet
  org.springframework.web.servlet.DispatcherServlet
  
   contextConfigLocation
   classpath:springmvc.xml
  
  1
 

  
 
  springDispatcherServlet
  /
 
 
   
  
   CharacterEncodingFilter
  org.springframework.web.filter.CharacterEncodingFilter
  
  
   encoding
   utf-8
  
  
  
   forceEncoding
   true
  
  
  
   CharacterEncodingFilter
   /
  
   
  
   HiddenHttpMethodFilter
  org.springframework.web.filter.HiddenHttpMethodFilter
   
  
   HiddenHttpMethodFilter
   
 
 @RequestMapping("/handle01")
 public String handle01(
   @RequestParam(value = "user", required = false, defaultValue = "未命名") String user) {
  System.out.println("获取的User:" + user);
  return "success";
 }
 
 
 @RequestMapping("/handle02")
 public String handle02(
   @RequestHeader(value = "User-Agent", required = false, defaultValue = "没有的") String userAgent) {
  System.out.println("User-Agent:" + userAgent);
  return "success";
 }
 
 
 @RequestMapping("/handle03")
 public String handle03(
   @cookievalue(value = "JSESSIONID", required = false, defaultValue = "hhhhh") String jid) {
  System.out.println("jid：" + jid);
  return "success";
 }

 
 @RequestMapping("/saveBook")
 public String handle04(Book book) {
  System.out.println("book的值：" + book);
  return "success";
 }

 @RequestMapping("/handle05")
 // pringMVC还允许我们在请求参数上使用原生的ServletAPI HttpServletRequest HttpServletResponse
 // HttpSession
 public String handle05(HttpSession session, HttpServletRequest request,
   HttpServletResponse response) {
  session.setAttribute("msg", "哈哈哈");

  request.setAttribute("reqMsg", "嘿嘿嘿");

  return "success";
 }

}

src/dataout/ DataOutPutController.java 给页面携带数据

@Controller //给页面携带数据
public class DataOutPutController {

 
 @RequestMapping("/output04")
 public String output04(ModelMap model){
  //视图解析器会对视图名进行拼串
  model.addAttribute("msg","output04");
  System.out.println(model.getClass());
  return "testScope";
  
 }
 @RequestMapping("/output03")
 public String output03(Model model){
  model.addAttribute("msg", "output03");
  System.out.println(model.getClass());
  return "testScope";
 }
 @RequestMapping("/output02")
 public String output02(Mapmap){
  //视图解析器会对视图名进行拼串
  map.put("msg", "output02");
  System.out.println(map.getClass());
  return "testScope";
 }
 @RequestMapping("/output01")
 public ModelAndView output01(){
  //视图解析器会对视图名进行拼串
  ModelAndView modelAndView = new ModelAndView();
  modelAndView.setViewName("testScope");
  modelAndView.addObject("msg", "output01");
  return modelAndView;
  
 }
}

以上这篇springmvc之获取参数的方法(必看)就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持考高分网。