SpringMVC注解@RequestParam全面解析

    @RequestMapping("testRequestParam")    
       public String filesUpload(@RequestParam String inputStr, HttpServletRequest request) {    
        System.out.println(inputStr);  
          
        int inputInt = Integer.valueOf(request.getParameter("inputInt"));  
        System.out.println(inputInt);  
          
        // ......省略  
        return "index";  
       }     

    <form action="/gadget/testRequestParam" method="post">    
         参数inputStr:<input type="text" name="inputStr">    
         参数intputInt:<input type="text" name="inputInt">    
    </form>  

    @RequestParam String inputStr  
    // 下面的对传入参数指定为aa，如果前端不传aa参数名，会报错  
    @RequestParam(value="aa") String inputStr  

    // required=false表示不传的话，会给参数赋值为null，required=true就是必须要有  
    @RequestMapping("testRequestParam")    
        public String filesUpload(@RequestParam(value="aa", required=true) String inputStr, HttpServletRequest request)  

    @RequestMapping("testRequestParam")    
       public String filesUpload(@RequestParam(value="aa", required=true) String inputStr,   
            @RequestParam(value="inputInt", required=false) int inputInt  
            ,HttpServletRequest request) {    
          
        // ......省略  
        return "index";  
       }