为什么我得到HttpHostConnectException

我在Android虚拟机中使用以下代码

try{ HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost("http://10.0.2.2/ReadingFromServer.php"); httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); HttpResponse response = httpclient.execute(httppost); HttpEntity entity = response.getEntity(); is = entity.getContent(); }catch(Exception e){ Log.e("log_tag", "Error in http connection"+e.toString()); } 

我得到HttpHostConnectException。 不知道为什么? 我已经把地址从127.0.0.1更改为10.0.2.2,但仍然得到这个exception。 我有我的电脑安装wamp服务器和文件“ReadingFromServer.php”被放置在“www”文件夹。

这是完整的堆栈跟踪

 05-20 20:40:32.218: W/System.err(681): org.apache.http.conn.HttpHostConnectException: Connection to http://10.0.2.2 refused 05-20 20:40:32.248: W/System.err(681): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:183) 05-20 20:40:32.258: W/System.err(681): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164) 05-20 20:40:32.268: W/System.err(681): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119) 05-20 20:40:32.278: W/System.err(681): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360) 05-20 20:40:32.288: W/System.err(681): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555) 05-20 20:40:32.298: W/System.err(681): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487) 05-20 20:40:32.308: W/System.err(681): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465) 05-20 20:40:32.318: W/System.err(681): at com.test.TestProjectActivity.onCreate(TestProjectActivity.java:56) 05-20 20:40:32.328: W/System.err(681): at android.app.Activity.performCreate(Activity.java:4465) 05-20 20:40:32.338: W/System.err(681): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 05-20 20:40:32.348: W/System.err(681): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920) 05-20 20:40:32.358: W/System.err(681): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 05-20 20:40:32.368: W/System.err(681): at android.app.ActivityThread.access$600(ActivityThread.java:123) 05-20 20:40:32.378: W/System.err(681): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 05-20 20:40:32.388: W/System.err(681): at android.os.Handler.dispatchMessage(Handler.java:99) 05-20 20:40:32.398: W/System.err(681): at android.os.Looper.loop(Looper.java:137) 05-20 20:40:32.408: W/System.err(681): at android.app.ActivityThread.main(ActivityThread.java:4424) 05-20 20:40:32.418: W/System.err(681): at java.lang.reflect.Method.invokeNative(Native Method) 05-20 20:40:32.428: W/System.err(681): at java.lang.reflect.Method.invoke(Method.java:511) 05-20 20:40:32.438: W/System.err(681): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 05-20 20:40:32.448: W/System.err(681): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 05-20 20:40:32.448: W/System.err(681): at dalvik.system.NativeStart.main(Native Method) 05-20 20:40:32.468: W/System.err(681): Caused by: java.net.ConnectException: socket failed: EACCES (Permission denied) 05-20 20:40:32.488: W/System.err(681): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:181) 05-20 20:40:32.498: W/System.err(681): ... 21 more 05-20 20:40:32.508: W/System.err(681): Caused by: java.net.SocketException: socket failed: EACCES (Permission denied) 05-20 20:40:32.528: W/System.err(681): at libcore.io.IoBridge.socket(IoBridge.java:573) 05-20 20:40:32.538: W/System.err(681): at java.net.PlainSocketImpl.create(PlainSocketImpl.java:201) 05-20 20:40:32.548: W/System.err(681): at java.net.Socket.checkOpenAndCreate(Socket.java:663) 05-20 20:40:32.558: W/System.err(681): at java.net.Socket.connect(Socket.java:807) 05-20 20:40:32.578: W/System.err(681): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119) 05-20 20:40:32.578: W/System.err(681): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:144) 05-20 20:40:32.588: W/System.err(681): ... 21 more 05-20 20:40:32.598: W/System.err(681): Caused by: libcore.io.ErrnoException: socket failed: EACCES (Permission denied) 05-20 20:40:32.628: W/System.err(681): at libcore.io.Posix.socket(Native Method) 05-20 20:40:32.658: W/System.err(681): at libcore.io.BlockGuardOs.socket(BlockGuardOs.java:181) 05-20 20:40:32.658: W/System.err(681): at libcore.io.IoBridge.socket(IoBridge.java:558) 

谢谢。

Solutions Collecting From Web of "为什么我得到HttpHostConnectException"

您是否在AndroidManifest.xml中声明Internet权限?

您需要将以下内容放入AndroidManifest.xml中

 <manifest> ... <uses-permission android:name="android.permission.INTERNET"/> </manifest> 

通过在AndroidManifest.xml manifest标签下添加这个应用程序的互联网权限

 <uses-permission android:name="android.permission.INTERNET" /> 

否则Android将阻止您的应用程序的互联网stream量