我試圖從Android活動訪問WSDL中定義的Web服務。預期的輸出是json格式的字符串。 在第一步中,我的目標是將此字符串打印到Android中的文本視圖。所以我用下面的代碼:當從Android訪問基於SOAP的Web服務時發生ClassCastException
import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import android.os.Bundle;
import android.os.Handler;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.widget.TextView;
public class MainActivity extends Activity {
private final String NAMESPACE = "XXXXXXXXXXXXXXX";
private final String URL = "XXXXXXXXXXXXXXXXX";
private final String SOAP_ACTION = "XXXXXXXXXXXX";
private final String METHOD_NAME = "XXXXXXXXXXXXXXXXX";
private String webResponse = "";
private TextView textView;
private Thread thread;
private Handler handler = new Handler();
/** Called when the activity is first created. */
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView = (TextView) findViewById(R.id.textView1);
startWebAccess();
}
public void startWebAccess() {
thread = new Thread() {
public void run() {
try {
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
SoapEnvelope.VER11);
envelope.setOutputSoapObject(request);
HttpTransportSE androidHttpTransport = new HttpTransportSE(
URL);
androidHttpTransport.call(SOAP_ACTION, envelope);
SoapPrimitive response = (SoapPrimitive) envelope
.getResponse();
webResponse = response.toString();
Log.d("TAG", webResponse);
}
catch (Exception e) {
e.printStackTrace();
}
handler.post(createUI);
}
};
thread.start();
}
final Runnable createUI = new Runnable() {
public void run() {
Log.d("TAG", webResponse);
textView.setText(webResponse);
}
};
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
但是,當我試圖運行的代碼,我可以看到在日誌貓以下錯誤(在文字沒有輸出):
java.lang.ClassCastException: java.util.Vector
這裏是輸出完整日誌貓:
08-06 09:57:11.792: D/dalvikvm(953): GC_FOR_MALLOC freed 771 objects/322464 bytes in 130ms
08-06 09:57:13.252: D/dalvikvm(953): GC_FOR_MALLOC freed 3182 objects/473904 bytes in 41ms
08-06 09:57:13.252: D/NativeCrypto(953): Freeing OpenSSL session
08-06 09:57:13.293: W/System.err(953): java.lang.ClassCastException: java.util.Vector
08-06 09:57:13.293: W/System.err(953): at org.sahana.peoplelocator.MainActivity$2.run(MainActivity.java:56)
什麼可以是錯誤?請幫助我我卡在這裏。
預先感謝您!
是什麼線56 MainActivity.java? – Raghunandan
請嘗試下面的內容並通知它是否不適合您。 – Raghunandan
謝謝!解決了這個問題。 – Grant