我想在使用 java springboot 直接点击 post 方法 url 时显示错误消息，所以我使用了 try catch exception 但它不起作用，我收到了我在这个问题中提到的错误消息，感谢帮助或建议。
我只是要求当我们访问 localhost:8080/LoginProcess 时，我需要显示 error404 html 页面的 url。
Controller 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";
}
}
错误信息
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)
最佳答案
尝试使用 @PostMapping(value = "/loginProcess") 或尝试将 RequestMapping 与方法一起使用 @RequestMapping(value = "/loginProcess", method = RequestMethod.POST)
关于java - 在浏览器中直接点击 post 方法 url 时显示错误消息，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/54968395/