springMVC的PathVariable

[yza3137957]

@PathVariable(value = "userName") String userName 这东西怎么用啊 为什么我每次用都
java.lang.IllegalStateException: Could not find @PathVariable [userName] in @RequestMapping

[吴红军]

他是作为方法的参数的注解，你不能放在RequestMapping注解中。

[yza3137957]

@RequestMapping()
public String register(@PathVariable(value = "userName") String userName) {
ModelAndView mav = new ModelAndView();
return "user/createSuccess";
}

[yza3137957]

就是方法参数

[lyon_z]

@PathVariable 会将url中的参数解析到对应的方法参数上，需要在@RequestMapping()指定匹配模式
@RequestMapping("somepath/{userName}")
这时你访问地址"somepath/Tom"就能把"Tom"解析到方法参数userName上

[liyonghui123]

@RequestMapping("/somepath/{userName}") public String register(@PathVariable(value = "userName") String userName) { //Todo somesing return "/simigoods"; }

[liyonghui123]

private static final Logger log = Logger.getLogger(Control.class); @Autowired private Service service; @RequestMapping(value = "/simigoods", method = RequestMethod.GET) public ModelAndView getSimigoods(){ List<Model> simigoodsList = service.getData(); ModelAndView view = new ModelAndView(); view.setViewName("manage"); view.addObject("simigoodsList", simigoodsList); view.addObject("simigoodsname", "Simigoods"); log.info("Simigoods执行了"); return view; } @RequestMapping(value = "/json", method = RequestMethod.GET) @ResponseBody //String hello(@RequestParam(value = "userid") int id),这样会把地址栏参数名为userid的值赋给参数id,如果用地址栏上的参数名为id,则接收不到 public String aaa(@RequestParam(value = "id",required=false,defaultValue = "") String id,@RequestParam(value = "callback",required=false,defaultValue = "") String callback){ return "hello word"+id+callback; } @RequestMapping("/somepath/{userName}") public String register(@PathVariable(value = "userName") String userName) { ModelAndView mav = new ModelAndView(); mav.setViewName("manage"); //Todo somesing return "/simigoods"; }

[JPoral2011]

引用 5 楼 liyonghui123 的回复:

@RequestMapping("/somepath/{userName}") public String register(@PathVariable(value = "userName") String userName) { //Todo somesing return "/simigoods"; }

正解

[caomadeaaa]

@RequestMapping(url/{id}) public void method01(@PathVariable Integer id){ ... }