Question

使用Spring REST API [Spring MVC]

情境：

当请求到达EmployeeController时，如果请求/响应属于特定逻辑，则会强制将请求/响应转发给另一个URI。控制器方法RequestMapping设置为＆＃39; RequestMethod.POST＆＃39;目标控制器 - SpecialController的{{1}}名为method，invalidRequest()设置为＆{39; RequestMapping＆＃39;

EmployeeController：

RequestMethod.GET

目标控制器：

@RestController
@RequestMapping(value = "/employee")
public class EmployeeController {

    String res = null;

    @RequestMapping(value = "/update", method = RequestMethod.POST)
    public String updateEmployeeDetails(HttpServletRequest httpRequest, HttpServletResponse httpResponse,
            @Valid @RequestBody Employee emp) throws ServletException, IOException {
         // based on logic, forward the request to a different controller that handles invalid request

    if( ...) { // condition checking
        RequestDispatcher requestDispatcher = httpRequest.getServletContext().getRequestDispatcher("/invalidRequest");
        requestDispatcher.forward(httpRequest, httpResponse);

    }

   if(..someother condition..) {
        String res = "something";
   }
return res;

问题： 不一致问题[实际问题]：

在90％的情况下，这是有效的，但很少次，我得到以下错误。如果我总是得到这个错误，那么它会产生一些意义，我会得到下面提到的＆＃39; 可能的修复＆＃39; 但由于它大部分时间都在工作，而且有时不工作，我需要你的帮助才能找到原因？

org.springframework.web.HttpRequestMethodNotSupportedException：请求方法＆＃39; POST＆＃39;不支持在org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping.handleNoMatch（RequestMappingInfoHandlerMapping.java:198）在org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.lookupHandlerMethod（AbstractHandlerMethodMapping.java:286）在org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal（AbstractHandlerMethodMapping.java:233）在org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal（AbstractHandlerMethodMapping.java:56）在org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler（AbstractHandlerMapping.java:300）在org.springframework.web.servlet.DispatcherServlet.getHandler（DispatcherServlet.java:1101）在org.springframework.web.servlet.DispatcherServlet.doDispatch（DispatcherServlet.java:916）在org.springframework.web.servlet.DispatcherServlet.doService（DispatcherServlet.java:876）在org.springframework.web.servlet.FrameworkServlet.processRequest（FrameworkServlet.java:961）在org.springframework.web.servlet.FrameworkServlet.doPost（FrameworkServlet.java:863）

如果错误一致，

可能会修复：

@RestController
    @RequestMapping(value = "/invalidRequest")
    public class SpecialController {

        @RequestMapping(value = "", method = RequestMethod.GET)
        public String invalidRequest(HttpServletRequest httpRequest, HttpServletResponse httpResponse) {
            httpResponse.setStatus(401);
            return "invalidRequest";
        }

    }

不一致的错误：请求方法＆＃39; POST＆＃39;不支持

0 个答案: