SpringBoot多种场景传参模式

@RequestMapping("/test01")
public ModelAndView test01(HttpServletRequest request){
      String username = request.getParameter("username");
      String passWord = request.getParameter("password");

      System.out.println(username);
      System.out.println(password);
      return null;
}

@RequestMapping("/test02_1")
public ModelAndView test02_1(String username,String password){
      System.out.println(username);
      System.out.println(password);
      return null;
}
@RequestMapping("/test02_2")
public ModelAndView test02_2(@RequestParam("username") String name,@RequestParam(value = "password",defaultValue = "1234987") String pwd){
      //使用了@RequestParam的参数不能传空值
      // required:表示是否必须要传值
      // defaultValue:当没有该请求参数时,SpringMVC给请求参数的默认值
      System.out.println(name);
      System.out.println(pwd);
      return null;
}

@RequestMapping("/test03")

public ModelAndView test03(@ModelAttribute("stu") Student student){
    
      System.out.println(student);
      ModelAndView mv = new ModelAndView();
      mv.setViewName("test2");
      return mv;
}

 @PostMapping("/reGISter")
    public Result bodyParams(@RequestBody Users users) {
        return ResultResponse.success(users);
    }

    
    @DeleteMapping("/del")
    public Result listParams(String[] ids) {
        return ResultResponse.success(ids);
    }

@RequestMapping("/delete/{id}")
public ModelAndView test4(@PathVariable("id")Long id){
    System.out.println("delete");
    System.out.println(id);
    return null;
}