如何在 RestEasy 客户端中获取 ClientResponseFailure 的详细信息？

Question

返回status >=400时如何获取http响应内容。这是我的代码示例：

    try {
        ChatService client = ProxyFactory.create(ChatService.class, apiUrl);
        client.putMessage(dto);
    } catch (ClientResponseFailure ex) {
        System.out.println(ex.getResponse().getEntity().toString());
    }

这会抛出：

Exception in thread "main" org.jboss.resteasy.spi.ReaderException: java.io.IOException: Stream closed
    at org.jboss.resteasy.core.messagebody.ReaderUtility.doRead(ReaderUtility.java:123)
    at org.jboss.resteasy.client.core.BaseClientResponse.readFrom(BaseClientResponse.java:246)
    at org.jboss.resteasy.client.core.BaseClientResponse.getEntity(BaseClientResponse.java:210)
    at org.jboss.resteasy.client.core.BaseClientResponse.getEntity(BaseClientResponse.java:171)
    at App.main(App.java:40)
Caused by: java.io.IOException: Stream closed
    at java.io.BufferedInputStream.getInIfOpen(BufferedInputStream.java:134)
    at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
    at java.io.BufferedInputStream.read1(BufferedInputStream.java:258)
    at java.io.BufferedInputStream.read(BufferedInputStream.java:317)
    at org.jboss.resteasy.client.core.SelfExpandingBufferredInputStream.read(SelfExpandingBufferredInputStream.java:58)
    at java.io.FilterInputStream.read(FilterInputStream.java:90)
    at org.jboss.resteasy.client.core.SelfExpandingBufferredInputStream.read(SelfExpandingBufferredInputStream.java:68)
    at org.jboss.resteasy.util.ReadFromStream.readFromStream(ReadFromStream.java:30)
    at org.jboss.resteasy.plugins.providers.ByteArrayProvider.readFrom(ByteArrayProvider.java:32)
    at org.jboss.resteasy.plugins.providers.ByteArrayProvider.readFrom(ByteArrayProvider.java:23)
    at org.jboss.resteasy.core.interception.MessageBodyReaderContextImpl.proceed(MessageBodyReaderContextImpl.java:105)
    at org.jboss.resteasy.plugins.interceptors.encoding.GZIPDecodingInterceptor.read(GZIPDecodingInterceptor.java:46)
    at org.jboss.resteasy.core.interception.MessageBodyReaderContextImpl.proceed(MessageBodyReaderContextImpl.java:108)
    at org.jboss.resteasy.core.messagebody.ReaderUtility.doRead(ReaderUtility.java:111)
    ... 4 more

我想要更多的详细信息，而不仅仅是状态代码 400。

Answer 1

这是您要发送的异常吗？

不幸的是，RestEASY 客户端框架本身不支持异常编组，而是将其改编到 HTTP 框架中。不过，仍然应该在服务器上抛出异常。我从来没有这样做过，你可以使用 ExceptionMappers 来检查异常。

http://docs.jboss.org/resteasy/ docs/1.2.GA/userguide/html/ExceptionHandling.html

Answer 2

调试时，我注意到我需要的详细信息位于“streamFactory”对象中，作为 XML 字节流。我在 RestEasy 文档中找到了关于 客户端响应。它表示

getEntity(java.lang.Class<T2> type) 

getEntity 可以在哪里将输出编组到所需的类。就我而言，我有一个自定义类，用于从服务返回的错误，称为 ServiceError。这就是我传递给 getEntity 的类：

try {
    serviceResult = proxy.addCustomer(customerName, customerProfile);
} catch (ClientResponseFailure ex) {
    ClientResponse<String> cResp = ex.getResponse();
    ServiceError myEntity = cResp.getEntity(ServiceError.class);
    System.out.println("myEntity errorText=" + myEntity.getErrorMessage().getErrorText());
    System.out.println("myEntity errorCode=" + myEntity.getErrorMessage().getErrorCode());
}