使用ExceptionMapper的自定义HTTP原因短语

时间:2018-10-15 17:11:58

标签: tomcat jax-rs http-status-codes exceptionmapper

我已定义以下异常映射器来处理自定义<mvx:MvxContentPage xmlns:mvx="clr-namespace:MvvmCross.Forms.Views;assembly=MvvmCross.Forms" x:TypeArguments="viewModels:CategoryListViewModel" xmlns:viewModels="" xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" x:Class="GSP.X.AccuStore.Forms.Views.Site.Profiles.CategoryListView"> <ContentPage.ToolbarItems> <ToolbarItem Text="Areas" Command="{Binding Path=GoToAreasCommand}" /> </ContentPage.ToolbarItems> </mvx:MvxContentPage>

HttpCustomException

当在代码中抛出package com.myapp.apis; import com.myapp.apis.model.HttpCustomException; import com.myapp.apis.model.HttpCustomExceptionStatusType; import com.myapp.apis.model.HttpCustomNotAuthorizedException; import javax.ws.rs.core.Response; import javax.ws.rs.ext.ExceptionMapper; import javax.ws.rs.ext.Provider; @Provider public class HttpCustomExceptionMapper implements ExceptionMapper <HttpCustomException> { @Override public Response toResponse (HttpCustomException e) { Response response = Response.status (new HttpCustomExceptionStatusType (Response.Status.UNAUTHORIZED, e.getMessage ())).build (); if (e instanceof HttpCustomNotAuthorizedException) { response = Response.status (new HttpCustomExceptionStatusType (Response.Status.INTERNAL_SERVER_ERROR, e.getMessage ())).build (); } System.out.println ("HttpCustomExceptionMapper: " + response.getStatus () + ", " + response.getStatusInfo ().getReasonPhrase ()); return response; } } 时,我可以在catalina.out中看到HttpCustomNotAuthorizedException方法末尾定义的日志消息。因此,在请求处理期间将调用HttpCustomExceptionMapper类。但是,在最终响应中,我在客户端看到的是,我只看到标准的toResponse消息,而不是我在响应中设置的自定义消息。

为什么会这样?

2 个答案:

答案 0 :(得分:1)

它显示标准响应,因为您没有为响应设置主体,而只是设置状态。 您必须像这样传递自定义响应:

Response response = Response.status (Response.Status.INTERNAL_SERVER_ERROR).entity(CustomResponse).build ();

我不能接受这种设计,但是会是这样的:

HttpCustomExceptionStatusType  status = new HttpCustomExceptionStatusType (Response.Status.INTERNAL_SERVER_ERROR, e.getMessage ())
Response response = Response.status (status).entity(status).build ();

答案 1 :(得分:1)

您应该注意,当前版本的HTTP协议(HTTP / 2)完全不支持原因短语。它已从协议中删除。

因此,从Tomcat 9.0开始已删除对发送原因短语的支持。在Tomcat 7.0中,默认情况下已禁用8.5对发送自定义原因短语的支持(可以通过system propertyorg.apache.coyote.USE_CUSTOM_STATUS_MSG_IN_HEADER启用)。在8.5中,您还应该在Connector上设置sendReasonPhrase="true"

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