vaadin + spring boot：無法轉發到錯誤頁面請求

Question

通過單視圖應用程序vaadin 7.7.7，spring-boot 1.5我從用戶檢查uri片段https：/ tld /＃！category-name-1，如果類別存在秀項，如果沒有

VaadinService.getCurrentResponse().sendError(404, "page not found!"); 

但我得到了錯誤的更新春天啓動1.5和7.7.7 vaadin（與嵌入式的tomcat）後：

Cannot forward to error page for request [/vaadinServlet/UIDL/] as the response has already been committed. As a result, the response may have the wrong status code. If your application is running on WebSphere Application Server you may be able to resolve this problem by setting com.ibm.ws.webcontainer.invokeFlushAfterService to false 

我怎麼能發送從vaadin HTTP錯誤頁面給用戶？

ErrorPageCutomizer.java

@Component 
public class ErrorPageCutomizer implements EmbeddedServletContainerCustomizer { 
    @Override 
    public void customize(ConfigurableEmbeddedServletContainer container) { 
     container.addErrorPages(new ErrorPage(HttpStatus.NOT_FOUND, "/error/404")); 
     container.addErrorPages(new ErrorPage(HttpStatus.INTERNAL_SERVER_ERROR, "/error/500")); 
    } 
} 

RestController.java

import org.springframework.boot.autoconfigure.web.ErrorController; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RestController; 

@RestController 
public class ErrorHandlingController implements ErrorController { 

    private static final String PATH = "/error"; 

    @RequestMapping(value = PATH + "/404") 
    public String error404() { 
     return "<div style='font-weight:bold; margin-top:200px; text-align:center; font-size:160%;'>Page not found...<br><a href=\"https://tld\">to home</a></div>"; 
    } 

    @RequestMapping(value = PATH + "/500") 
    public String error500() { 
     return "<div style='font-weight:bold; margin-top:200px; text-align:center; font-size:160%;'>500 Internal server error...</div>"; 
    } 

    @Override 
    public String getErrorPath() { 
     return PATH; 
    } 
} 

Answer 1

Soliution是：

@Configuration 
public class AppInitializer implements WebApplicationInitializer { 

    @Bean 
    public ErrorPageFilter errorPageFilter() { 
     return new ErrorPageFilter(); 
    } 

    @Bean 
    public FilterRegistrationBean disableSpringBootErrorFilter(ErrorPageFilter filter) { 
     FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(); 
     filterRegistrationBean.setFilter(filter); 
     filterRegistrationBean.setEnabled(false); 
     return filterRegistrationBean; 
    } 
} 

Answer 2

您是否嘗試過SystemMessagesProvider。在該提供者可以定義一個用於errorUrl各種錯誤：

public class YourServlet extends VaadinServlet 
{ 
    @Override 
    protected void servletInitialized() throws ServletException 
    { 
     super.servletInitialized(); 

     getService().setSystemMessagesProvider(new SystemMessagesProvider() 
     { 
      @Override 
      public SystemMessages getSystemMessages(SystemMessagesInfo systemMessagesInfo) 
      { 
       final CustomizedSystemMessages c = new CustomizedSystemMessages(); 
       final String errorUrl = "<url to errorpage>"; 
       c.setSessionExpiredURL(errorUrl); 
       c.setSessionExpiredNotificationEnabled(false); 

       c.setAuthenticationErrorURL(errorUrl); 
       c.setAuthenticationErrorNotificationEnabled(false); 

       c.setCommunicationErrorURL(errorUrl); 
       c.setCommunicationErrorNotificationEnabled(false); 

       c.setCookiesDisabledURL(errorUrl); 
       c.setCookiesDisabledNotificationEnabled(false); 

       c.setInternalErrorURL(errorUrl); 
       c.setInternalErrorNotificationEnabled(false); 

       c.setSessionExpiredURL(errorUrl); 
       c.setSessionExpiredNotificationEnabled(false); 
       return c; 
      } 
     }); 
    }