通過@PathVariabl注解獲取路徑中傳遞參數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注解獲取POST請求的FORM表單數據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獲取JAVA
@RequestMapping(method = RequestMethod.GET)
public String get(HttpServletRequest request, HttpServletResponse response) {
System.out.println(request.getParameter("a"));
return "helloWorld";
}
用注解@RequestParam綁定請求參數a到變量a當請求參數a不存在時會有異常發生,可以通過設置屬性required=false解決,
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";}