android - HttpClient 在执行方法时失败

Question

这一定是我在做的一些愚蠢的事情，但我无法理解这是什么问题......

我的代码 fragment

try {
    HttpClient client = new DefaultHttpClient();
    HttpGet request = new HttpGet("http://somehost/WS2/Upload.aspx?one=valueGoesHere");
    client.execute(request);//it fails at this line
} catch (Exception e) {

在我的 list 中我有互联网访问权限

从控制台

W/System.err( 4210): java.net.UnknownHostException: somehost
W/System.err( 4210):    at java.net.InetAddress.lookupHostByName(InetAddress.java:513)
W/System.err( 4210):    at java.net.InetAddress.getAllByNameImpl(InetAddress.java:278)
W/System.err( 4210):    at java.net.InetAddress.getAllByName(InetAddress.java:242)
W/System.err( 4210):    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:136)
W/System.err( 4210):    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
W/System.err( 4210):    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
W/System.err( 4210):    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:348)
W/System.err( 4210):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
W/System.err( 4210):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
W/System.err( 4210):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
W/System.err( 4210):    at com.temp.services.httpclient.HttpGetDemo.onCreate(HttpGetDemo.java:29)
W/System.err( 4210):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1069)
W/System.err( 4210):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2751)
W/System.err( 4210):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2803)
W/System.err( 4210):    at android.app.ActivityThread.access$2300(ActivityThread.java:135)
W/System.err( 4210):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2136)
W/System.err( 4210):    at android.os.Handler.dispatchMessage(Handler.java:99)
W/System.err( 4210):    at android.os.Looper.loop(Looper.java:144)
W/System.err( 4210):    at android.app.ActivityThread.main(ActivityThread.java:4937)
W/System.err( 4210):    at java.lang.reflect.Method.invokeNative(Native Method)
W/System.err( 4210):    at java.lang.reflect.Method.invoke(Method.java:521)
W/System.err( 4210):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
W/System.err( 4210):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
W/System.err( 4210):    at dalvik.system.NativeStart.main(Native Method)
I/ActivityManager(  120): Displayed activity com.temp.services/.httpclient.HttpGetDemo: 119 ms (total 304 ms)

Answer 1

尝试在你的http请求代码前添加以下内容

StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);