通过@PathVariabl注解获取路径中传递参数
JAVA
1 @RequestMapping(value = "/{id}/{str}")
2 public ModelAndView helloWorld(@PathVariable String id,
3 @PathVariable String str) {
4 System.out.println(id);
5 System.out.println(str);
6 return new ModelAndView("/helloWorld");
7 }
用@ModelAttribute注解获取POST请求的FORM表单数据
JSP
1 <form method="post" action="hao.do">
2 a: <input id="a" type="text" name="a"/>
3 b: <input id="b" type="text" name="b"/>
4 <input type="submit" value="Submit" />
5 </form>
JAVA pojo
1 public class Pojo{
2 private String a;
3 private int b;
4
5
JAVA controller
1 @RequestMapping(method = RequestMethod.POST)
2 public String processSubmit(@ModelAttribute("pojo") Pojo pojo) {
3
4 return "helloWorld";
5 }
直接用HttpServletRequest获取
JAVA
1 @RequestMapping(method = RequestMethod.GET)
2 public String get(HttpServletRequest request, HttpServletResponse response) {
4 System.out.println(request.getParameter("a"));
5 return "helloWorld";
6 }
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
1 @RequestMapping(value = "/requestParam", method = RequestMethod.GET)
2 public String setupForm(@RequestParam("a") String a, ModelMap model) {
3 System.out.println(a);
4 return "helloWorld";}