Spring Controller中的PathVariable

Question

我正在尝试映射网址/locations/{locationId}/edit.html - 这似乎与此代码一起使用:

@Controller
@RequestMapping( "/locations" )
public class LocationController
{
  @RequestMapping( value = "/{locationId}/edit.html", method = RequestMethod.GET )
  public String showEditForm( Map<String, Object> map, @PathVariable int locationId )
  {
    map.put( "locationId", locationId );
    return "locationform";
  }
}

调用提到的url结果会出现异常:

java.lang.IllegalArgumentException: Name for argument type [int] not available, and parameter name information not found in class file either.

我是否以错误的方式使用@PathVariable Annotation？

如何正确使用？

Answer 1

它应该是 @PathVariable("locationId") int locationId

Answer 2

您应该将value参数添加到您的@PathVariable,例如,

 public String showEditForm(
       @PathVariable("locationId") int locationId,
       Map<String, Object> map) {
    // ...
 }