springMVC参数的传递接收方式(转)

ゞ浴缸里的玫瑰 2021-11-02 01:50 420阅读 0赞

转自： [http://blog.csdn.net/zeng\_84\_long/article/details/8057586][http_blog.csdn.net_zeng_84_long_article_details_8057586]

[Spring MVC 的请求参数获取][Spring MVC]

1.  1.  通过@PathVariabl注解获取路径中传递参数  
        JAVA
        
        1      @RequestMapping(value  =   " /\{id\}/\{str\} " )  
        2       public  ModelAndView helloWorld(@PathVariable String id,  
        3              @PathVariable String str) \{  
        4          System.out.println(id);  
        5          System.out.println(str);  
        6           return   new  ModelAndView( " /helloWorld " );  
        7      \}
    2.  用@ModelAttribute注解获取POST请求的FORM表单数据  
        JSP
        
        1  < form method = " post "  action = " hao.do " >  
        2  a:  < input id = " a "  type = " text "    name = " a " />  
        3  b:  < input id = " b "  type = " text "    name = " b " />  
        4  < input type = " submit "  value = " Submit "   />  
        5  </ form >
        
          
        JAVA pojo
        
        1  public   class  Pojo\{  
        2       private  String a;  
        3       private   int  b;  
        4      ![dot.gif][] ![dot.gif][]  
        5 
        
          
        JAVA controller
        
        1  @RequestMapping(method  =  RequestMethod.POST)  
        2       public  String processSubmit(@ModelAttribute( " pojo " ) Pojo pojo) \{   
        3            
        4           return   " helloWorld " ;  
        5      \}
    3.  直接用HttpServletRequest获取  
        JAVA
        
        1      @RequestMapping(method  =  RequestMethod.GET)  
        2       public  String get(HttpServletRequest request, HttpServletResponse response) \{  
        4          System.out.println(request.getParameter( " a " ));  
        5           return   " helloWorld " ;  
        6      \}
    4.  用注解@RequestParam绑定请求参数a到变量a  
        当请求参数a不存在时会有异常发生,可以通过设置属性required=false解决,  
        例如: `@RequestParam(value="a", required=false)`  
        JAVA
        
        1      @RequestMapping(value  =   " /requestParam " , method  =  RequestMethod.GET)  
        2       public  String setupForm(@RequestParam( " a " ) String a, ModelMap model) \{  
        3          System.out.println(a);  
        4          return "helloWorld";\}

转载于:https://www.cnblogs.com/summer520/p/3434895.html

[http_blog.csdn.net_zeng_84_long_article_details_8057586]: http://blog.csdn.net/zeng_84_long/article/details/8057586
[Spring MVC]: http://www.blogjava.net/wmcoo/articles/333463.html
[dot.gif]: /images/20211101/f1d0649ac0ae46b5828228ae7df96b53.png