springmvc请求接收参数的几种方法

通过@PathVariabl注解获取路径中传递参数

JAVA

@RequestMapping(value="/{id}/{str}")
publicModelAndViewhelloWorld(@PathVariableStringid,@PathVariableStringstr){
System.out.println(id);
System.out.println(str);
returnnewModelAndView("/helloWorld");
}

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

<formmethod="post"action="hao.do">
a:<inputid="a"type="text"name="a"/>
b:<inputid="b"type="text"name="b"/>
<inputtype="submit"value="Submit"/>
</form>

JAVA pojo

publicclassPojo{
privateStringa;
privateintb;

JAVA controller

@RequestMapping(method=RequestMethod.POST)
publicStringprocessSubmit(@ModelAttribute("pojo")Pojopojo){
return"helloWorld";
}

直接用HttpServletRequest获取
JAVA

@RequestMapping(method=RequestMethod.GET)
publicStringget(HttpServletRequestrequest,HttpServletResponseresponse){
System.out.println(request.getParameter("a"));
return"helloWorld";
} www.bizhizu.cn

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: 壁纸族@RequestParam(value="a", required=false)
JAVA

@RequestMapping(value="/requestParam",method=RequestMethod.GET)
publicStringsetupForm(@RequestParam("a")Stringa,ModelMapmodel){
System.out.println(a);
return"helloWorld";}