java - 配置@PathVariable类型不匹配的错误页面

Question

假设我有一个 Controller :

@Controller

public class SomeController {

    @RequestMapping(value = "{id}/object.do")
    public String showObject(@PathVariable("id") Integer id,
                            HttpServletRequest request) {
            //do smth
            return "somePage";
        }
}

当“id”不是数字，而是像“aaa/object.do”这样的字符串时，Tomcat 向我显示错误 - “客户端发送的请求在语法上不正确。”

有没有办法配置仅当“id”路径变量类型不正确时才显示的错误页面？

Answer 1

您可以使用 @ExceptionHandler 来处理此问题对于这个特定的错误(我怀疑它是 TypeMismatchException )

@ExceptionHandler(TypeMismatchException.class)
public ModelAndView handleTypeMismatchException(TypeMismatchException ex) {
    //TODO log
    // Return something reasonable to the end user.
    ...
}

请注意，@ExceptionHandler 基本上具有与通常处理程序几乎相同的功能:

Much like standard controller methods annotated with a @RequestMapping annotation, the method arguments and return values of @ExceptionHandler methods are very flexible.