springmvc请求接收参数的几种方法(转载)

通过@PathVariabl注解获取路径中传递参数

JAVA
Java代码  收藏代码
@RequestMapping(value= " /{id}/{str} " ) 
public ModelAndView helloWorld(@PathVariable String id, @PathVariable String str) { 
System.out.println(id); 
System.out.println(str); 
return new ModelAndView( " /helloWorld " ); 
} 


用@ModelAttribute注解获取POST请求的FORM表单数据
JSP


Java代码  收藏代码
<form method="post" action="hao.do"> 
a: <input id="a" type="text" name="a"/>  
b: <input id="b" type="text" name="b"/>  
<input type="submit" value="Submit" />  
</form> 



JAVA pojo

Java代码  收藏代码
public class Pojo{ 
private String a; 
private int b; 
 

JAVA controller

Java代码  收藏代码
@RequestMapping(method= RequestMethod.POST) 
public String processSubmit(@ModelAttribute( " pojo " ) Pojo pojo) { 
return " helloWorld " ; 
} 



直接用HttpServletRequest获取
JAVA

Java代码  收藏代码
@RequestMapping(method= RequestMethod.GET) 
public String get(HttpServletRequest request, HttpServletResponse response) { 
System.out.println(request.getParameter( " a " )); 
return " helloWorld " ; 
} 



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

Java代码  收藏代码
@RequestMapping(value= " /requestParam " , method= RequestMethod.GET) 
public String setupForm(@RequestParam( " a " ) String a, ModelMap model) { 
System.out.println(a); 
return " helloWorld " ;}