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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
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代码下载地址:http://www.zuidaima.com/share/1751862044773376.htm
JAVA
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@RequestMapping(value=http://www.mamicode.com/ " /{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
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<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=http://www.mamicode.com/"Submit" />
</form>
JAVA pojo
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public class Pojo{
private String a;
private int b;
JAVA controller
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@RequestMapping(method= RequestMethod.POST)
public String processSubmit(@ModelAttribute( " pojo " ) Pojo pojo) {
return " helloWorld " ;
}
直接用HttpServletRequest获取
JAVA
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@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(vhttp://www.mamicode.com/alue="a", required=false)
JAVA
[java] view plaincopy
@RequestMapping(value=http://www.mamicode.com/ " /requestParam " , method= RequestMethod.GET)
public String setupForm(@RequestParam( " a " ) String a, ModelMap model) {
System.out.println(a);
return " helloWorld " ;}
springmvc请求接收参数的几种方法