Apache DefaultHttpClient调用的结果为“ j​​ava.lang.RuntimeException：Stub！”

Question

我正在全力投入Android开发。我有一个将与RESTful资源交互的项目，并且我试图弄清楚如何通过HTTP使用参数进行基本的GET。从我阅读的所有内容来看，共识似乎比HTTPURLConnection更偏爱HTTPClient。

我编写了一个包装器类，该包装器的方法负责实例化关键对象以使用HTTPClient发出请求：

public String get() {  
    String responseString = null;

    HttpClient client = new DefaultHttpClient();
    HttpGet get = new HttpGet();
    try {
        get.setURI(new URI(this.baseURL()));
    } catch (URISyntaxException e1) {
        e1.printStackTrace();
    }

    HttpResponse response;

    try {
        response = client.execute(get);
        responseString = readResponse(response.getEntity());

        if(response != null) {
            System.out.println(responseString);
        }
    } catch(ClientProtocolException e) {
        e.printStackTrace();
    } catch(IOException e) {
        e.printStackTrace();
    }

    return responseString;

}

该行HttpClient client = new DefaultHttpClient();引发以下异常：

java.lang.RuntimeException: Stub!
at org.apache.http.impl.client.AbstractHttpClient.<init>(AbstractHttpClient.java:5)
at org.apache.http.impl.client.DefaultHttpClient.<init>(DefaultHttpClient.java:7)
at org.rcindustries.appmap.RestClient.get(RestClient.java:54)
at org.rcindustries.appmap.test.functional.RestClientTest.shouldReturnSomeJSon(RestClientTest.java:26)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

我为HttpClient看到的每个示例都使用类似的结构来执行GET和POST。与Android SDK捆绑在一起的Apache
Commons库是否与标准库明显不同？

Answer 1

我认为这是Android告诉您无法在该平台上运行该单元测试的方法。涉及与Android平台（例如网络）交互的单元测试需要在实际的Android设备或运行正常的Android仿真器上运行。

（它们不能在常规Eclipse的上下文中运行。在早期，您需要用于Eclipse的Android插件。现在（自2013年起），您应该使用基于Intellij构建的Android
Studio。）

显然，您实际上是在针对Android SDK提供的存根类运行单元测试。这永远行不通。