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

a:
b:

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 " ;}