Spring MVC 的请求参数获取的几种方法通过@PathVariabl注解获取路径中传递参数JAVA @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 <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 public class Pojo{ private String a; private int b; } JAVA controller @RequestMapping(method = RequestMethod.POST) public String processSubmit(@ModelAttribute("pojo") Pojo pojo) { return "helloWorld"; } 直接用HttpServletRequest获取 JAVA @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 @RequestMapping(value = "/requestParam", method = RequestMethod.GET)
public String setupForm(@RequestParam("a") String a, ModelMap model) { System.out.println(a); return "helloWorld";} posted on 2012-03-23 17:36 paulwong 阅读(11479) 评论(1) 编辑 收藏 所属分类: SPRING MVC |
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