Spring托架模板401错误响应

Question

因此，在我的客户端代码中，我有：

HttpHeaders headers = new HttpHeaders();
headers.set(HttpHeaders.AUTHORIZATION, "myToken");
HttpEntity entity = new HttpEntity(null, headers);

restTemplate = new RestTemplate();
restTemplate.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
restTemplate.getMessageConverters().add(new StringHttpMessageConverter());

response = restTemplate.exchange("http://localhost:8080/documents", HttpMethod.GET, entity, Document[].class);

一切正常。之后我要测试错误。因此，我删除了授权头。

当我用像postman这样的工具进行测试时，我会收到401响应。但是对于我的rest模板，我只收到一个IllegalArgumentException。

我也测试了ResponseErrorHandler。

public class MyErrorHandler implements ResponseErrorHandler {

    @Override
    public boolean hasError(ClientHttpResponse clientHttpResponse) throws IOException {
        return false; //i've also tried return true
    }

    @Override
    public void handleError(ClientHttpResponse clientHttpResponse) throws IOException {
        String theString = IOUtils.toString(clientHttpResponse.getBody());
        FunctionalTestException exception = new FunctionalTestException();
        Map<String, Object> properties = new HashMap<String, Object>();
        properties.put("code", clientHttpResponse.getStatusCode().toString());
        properties.put("body", theString);
        properties.put("header", clientHttpResponse.getHeaders());
        exception.setProperties(properties);
        throw exception;
    }
}

restTemplate.setErrorHandler(new MyErrorHandler());

所以我的问题是如何使用rest模板找到我的401错误响应。

这里有个例外：

java.lang.IllegalArgumentException: invalid start or end

和堆栈跟踪：

sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1455)
sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1441)
sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:2979)
java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:489)
org.springframework.http.client.SimpleBufferingClientHttpRequest.executeInternal(SimpleBufferingClientHttpRequest.java:84)
org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48)
org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:53)
org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:619)
org.springframework.web.client.RestTemplate.execute(RestTemplate.java:580)
org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:498)
org.boite.dq.steps.UnauthorizedUser.callListCategories(UnauthorizedUser.java:61)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:498)
org.jbehave.core.steps.StepCreator$ParametrisedStep.perform(StepCreator.java:733)
org.jbehave.core.embedder.PerformableTree$FineSoFar.run(PerformableTree.java:346)
org.jbehave.core.embedder.PerformableTree$PerformableSteps.perform(PerformableTree.java:1088)
org.jbehave.core.embedder.PerformableTree$AbstractPerformableScenario.performRestartableSteps(PerformableTree.java:953)
org.jbehave.core.embedder.PerformableTree$NormalPerformableScenario.perform(PerformableTree.java:992)
org.jbehave.core.embedder.PerformableTree$PerformableScenario.perform(PerformableTree.java:902)
org.jbehave.core.embedder.PerformableTree$PerformableStory.performScenarios(PerformableTree.java:825)
org.jbehave.core.embedder.PerformableTree$PerformableStory.perform(PerformableTree.java:798)
org.jbehave.core.embedder.PerformableTree.performCancellable(PerformableTree.java:422)
org.jbehave.core.embedder.PerformableTree.perform(PerformableTree.java:393)
org.jbehave.core.embedder.StoryManager$EnqueuedStory.call(StoryManager.java:292)
org.jbehave.core.embedder.StoryManager$EnqueuedStory.call(StoryManager.java:266)
java.util.concurrent.FutureTask.run(FutureTask.java:266)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)

Answer 1

崩溃发生在HTTPURLConnection::GetHeAderField中，因此我怀疑您的一个响应头格式不正确（不是HTTPURLConnection所期望的）。通常，401响应附带一个www-authenticate响应头，将代理指向服务支持的身份验证方法。我怀疑是这个头导致了崩溃。

Jersey的问题跟踪器中的一个bug报告显示，httpurlconnection对www-authentication头格式设置了一些约束。在此特定情况下，导致类似崩溃的值是oauth_problem=token_rejected。建议的解决办法是：