直接在浏览器中击中Post方法URL时显示错误消息

Question

我想在使用Java Springboot直接击中POST方法URL时显示错误消息，因此我使用了尝试catch异常，但是它不起作用，我收到的错误消息，我在这个问题中提到了这些错误消息，对帮助或建议表示赞赏。

我只需要击中localhost：8080/loginprocess，url，我需要显示error404 html页面。

控制器方法

@PostMapping("/LoginProcess")
    public String LoginProcess(@ModelAttribute("customer") Customer thecustomer,HttpSession session) {
        try {
            Customer result = customerservice.Login_service(thecustomer.getUserName(),thecustomer.getPassword());
            if(result==null)
            {
                return "login";
            }
            else if(result.getRole().equals("1"))
            {
                session.setAttribute("l_uname",result.getUserName() );
                session.setAttribute("l_pwd",result.getPassword() );
                return "admindash";
            }
            else
            {
                session.setAttribute("l_uname",result.getUserName() );
                session.setAttribute("l_pwd",result.getPassword() );
                return "customerdash";
            }
        }catch(Exception e) {
            return "err404";
        }
    }

错误消息

This application has no explicit mapping for /error, so you are seeing this as a fallback.
Sun Mar 03 16:18:46 IST 2019
There was an unexpected error (type=Method Not Allowed, status=405).
Request method 'GET' not supported
org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'GET' not supported
    at org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping.handleNoMatch(RequestMappingInfoHandlerMapping.java:200)
    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.lookupHandlerMethod(AbstractHandlerMethodMapping.java:422)
    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:368)
    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:65)
    at org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler(AbstractHandlerMapping.java:401)
    at org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1231)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1014)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:897)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

Answer 1

尝试使用， @PostMapping(value = "/loginProcess")或尝试使用方法 @RequestMapping(value = "/loginProcess", method = RequestMethod.POST)

Answer 2

我通过使用@getMapping创建相同的重复方法来获得分辨率，并且效果很好。现在，它将其重定向到我的自定义错误页面。感谢Yali通过评论给我的想法。

@GetMapping("/LoginProcess")
    public String LoginProcess() {
        return "err404";
    }

Answer 3

尝试@ControllerAdvice和ExceptionHandler

@ControllerAdvice
public class DemoControllerAdvice {
    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
    public ResponseEntity<String> handleIOException(HttpRequestMethodNotSupportedException ex) {
        // prepare responseEntity
        return ResponseEntity.notFound().build();
    }
}

Answer 4

您无法从浏览器发送HTTP POST请求，因此我建议您使用Post Man工具进行测试。

Answer 5

我不确定春季是否提供了任何实现。但是，您可以通过编写自己的互助者来处理它。打印机将在击中控制器之前执行，因此您可以检查HTTP方法将其转发为ERROR JSP