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我打电话给一个异步Web服务（服务器不返回任何东西）使用KSOAP2。 Web服务调用已经成功，我可以从服务器看到，但HttpTransportSE.call抛出异常并崩溃了应用程序。KSOAP2调用异步webservice得到非法argumentException
我的代码是：
envelope.bodyOut = soap;
envelope.dotNet = false;
MarshalDouble md = new MarshalDouble();
md.register(envelope);
HttpTransportSE androidHttpTransport = new HttpTransportSE(url);
androidHttpTransport.debug = true;
try {
androidHttpTransport.call(null, envelope);
} catch (IOException e) {
e.printStackTrace();
} catch (XmlPullParserException e) {
e.printStackTrace();
}
和错误日志：
01-04 17:25:05.930: E/Trace(17787): error opening trace file: No such file or directory (2)
01-04 17:25:06.145: E/SensorManager(17787): thread start
01-04 17:25:19.145: E/AndroidRuntime(17787): FATAL EXCEPTION: AsyncTask #2
01-04 17:25:19.145: E/AndroidRuntime(17787): java.lang.RuntimeException: An error occured while executing doInBackground()
01-04 17:25:19.145: E/AndroidRuntime(17787): at android.os.AsyncTask$3.done(AsyncTask.java:299)
01-04 17:25:19.145: E/AndroidRuntime(17787): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
01-04 17:25:19.145: E/AndroidRuntime(17787): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
01-04 17:25:19.145: E/AndroidRuntime(17787): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
01-04 17:25:19.145: E/AndroidRuntime(17787): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
01-04 17:25:19.145: E/AndroidRuntime(17787): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
01-04 17:25:19.145: E/AndroidRuntime(17787): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
01-04 17:25:19.145: E/AndroidRuntime(17787): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
01-04 17:25:19.145: E/AndroidRuntime(17787): at java.lang.Thread.run(Thread.java:856)
01-04 17:25:19.145: E/AndroidRuntime(17787): Caused by: java.lang.IllegalArgumentException: size <= 0
01-04 17:25:19.145: E/AndroidRuntime(17787): at java.io.BufferedInputStream.<init>(BufferedInputStream.java:94)
01-04 17:25:19.145: E/AndroidRuntime(17787): at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:219)
01-04 17:25:19.145: E/AndroidRuntime(17787): at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:114)
01-04 17:25:19.145: E/AndroidRuntime(17787): at com.oracle.bpm.mobile.fragment.PSIRFragment.callBPMProcessAcceleratorAdapter(PSIRFragment.java:447)
01-04 17:25:19.145: E/AndroidRuntime(17787): at com.oracle.bpm.mobile.fragment.PSIRFragment.access$1(PSIRFragment.java:368)
01-04 17:25:19.145: E/AndroidRuntime(17787): at com.oracle.bpm.mobile.fragment.PSIRFragment$CallPSIRMobileAdapterTask.doInBackground(PSIRFragment.java:364)
01-04 17:25:19.145: E/AndroidRuntime(17787): at com.oracle.bpm.mobile.fragment.PSIRFragment$CallPSIRMobileAdapterTask.doInBackground(PSIRFragment.java:1)
01-04 17:25:19.145: E/AndroidRuntime(17787): at android.os.AsyncTask$2.call(AsyncTask.java:287)
01-04 17:25:19.145: E/AndroidRuntime(17787): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
01-04 17:25:19.145: E/AndroidRuntime(17787): ... 5 more
有谁知道这是为什么？我如何使用ksoap调用异步Web服务？ 谢谢。