我正在涉足Android开发。我有一个将与RESTful资源进行接口的项目,并且我正在尝试弄清楚如何通过HTTP进行基本GET参数。从我所读的所有内容来看,共识似乎更喜欢使用HTTPClient而不是HttpURLConnection。
我编写了一个包装类,其中一个方法负责实例化关键对象以使用HTTPClient发出请求:
我编写了一个包装类,其中一个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;
以下代码行:HttpClient client = new DefaultHttpClient();
会抛出以下异常:
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)
我看到的HttpClient的所有示例都使用类似的结构来执行GET和POST请求。Apache Commons库与Android SDK捆绑在一起的标准库有显著的不同吗?