Android 调用web服务时出错
我是安卓网络服务呼叫的新手。我正试图开发一个应用程序，通过调用soapweb服务来显示当前的温度。当我尝试运行应用程序时，我在Logcat中得到了以下错误Android 调用web服务时出错,android,Android,我是安卓网络服务呼叫的新手。我正试图开发一个应用程序，通过调用soapweb服务来显示当前的温度。当我尝试运行应用程序时，我在Logcat中得到了以下错误 09-03 02:38:16.246: E/AndroidRuntime(1539): FATAL EXCEPTION: main 09-03 02:38:16.246: E/AndroidRuntime(1539): java.lang.NoClassDefFoundError: org.ksoap2.serialization.SoapO
09-03 02:38:16.246: E/AndroidRuntime(1539): FATAL EXCEPTION: main
09-03 02:38:16.246: E/AndroidRuntime(1539): java.lang.NoClassDefFoundError: org.ksoap2.serialization.SoapObject
09-03 02:38:16.246: E/AndroidRuntime(1539): at com.example.updatesnew.MainActivity.onCreate(MainActivity.java:28)
public class MainActivity extends Activity
{
private static final String SOAP_ACTION = "http://ws.cdyne.com/WeatherWS/GetCityWeatherByZip";
private static final String METHOD_NAME = "GetCityWeatherByZip";
private static final String NAMESPACE ="http://ws.cdyne.com/WeatherWS/";
private static final String URL = "http://wsf.cdyne.com/WeatherWS/Weather.asmx?op=GetCityWeatherByZIP";
TextView tv;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv = (TextView) findViewById(R.id.textView01);
SoapSerializationEnvelope soapEnvelope = null;
//Here I am getting error.
SoapObject Request = new SoapObject(NAMESPACE,METHOD_NAME);
Request.addProperty("Texas","75011");
soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
soapEnvelope.dotNet = true;
soapEnvelope.setOutputSoapObject(Request);
@SuppressWarnings("deprecation")
AndroidHttpTransport aht=new AndroidHttpTransport(URL);
try
{
aht.call(SOAP_ACTION,soapEnvelope);
SoapPrimitive resultString = (SoapPrimitive) soapEnvelope.getResponse();
tv.setText("Status: "+resultString);
}
catch (Exception e)
{
e.printStackTrace();
}
}
Request.addProperty（“Texas”，“75011”）提前感谢。当您尝试在Android中使用web服务执行某些操作时，您必须使用AsyncTask来防止主线程上的网络错误，以下是我在上载内容时使用的示例代码：
public class PostDataAsyncTask extends AsyncTask<String, String, String> {
protected void onPreExecute() {
super.onPreExecute();
// do stuff before posting data
}
@Override
protected String doInBackground(String... strings) {
try {
// 1 = post text data, 2 = post file
int actionChoice = 2;
// post a text data
if(actionChoice==1){
postText();
}
// post a file
else{
postFile();
}
} catch (NullPointerException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String lenghtOfFile) {
// do stuff after posting data
}
// this will post our text data
private void postText(){
try{
// url where the data will be posted
String postReceiverUrl = "http://yourdomain.com/post_data_receiver.php";
Log.v(TAG, "postURL: " + postReceiverUrl);
// HttpClient
HttpClient httpClient = new DefaultHttpClient();
// post header
HttpPost httpPost = new HttpPost(postReceiverUrl);
// add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("firstname", "Mike"));
nameValuePairs.add(new BasicNameValuePair("lastname", "Dalisay"));
nameValuePairs.add(new BasicNameValuePair("email", "mike@testmail.com"));
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// execute HTTP post request
HttpResponse response = httpClient.execute(httpPost);
HttpEntity resEntity = response.getEntity();
if (resEntity != null) {
String responseStr = EntityUtils.toString(resEntity).trim();
Log.v(TAG, "Response: " + responseStr);
// you can add an if statement here and do other actions based on the response
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
当您尝试在Android中使用web服务执行某些操作时，必须使用AsyncTask来防止网络主线程错误，以下是我在上载内容时使用的示例代码：
public class PostDataAsyncTask extends AsyncTask<String, String, String> {
protected void onPreExecute() {
super.onPreExecute();
// do stuff before posting data
}
@Override
protected String doInBackground(String... strings) {
try {
// 1 = post text data, 2 = post file
int actionChoice = 2;
// post a text data
if(actionChoice==1){
postText();
}
// post a file
else{
postFile();
}
} catch (NullPointerException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String lenghtOfFile) {
// do stuff after posting data
}
// this will post our text data
private void postText(){
try{
// url where the data will be posted
String postReceiverUrl = "http://yourdomain.com/post_data_receiver.php";
Log.v(TAG, "postURL: " + postReceiverUrl);
// HttpClient
HttpClient httpClient = new DefaultHttpClient();
// post header
HttpPost httpPost = new HttpPost(postReceiverUrl);
// add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("firstname", "Mike"));
nameValuePairs.add(new BasicNameValuePair("lastname", "Dalisay"));
nameValuePairs.add(new BasicNameValuePair("email", "mike@testmail.com"));
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// execute HTTP post request
HttpResponse response = httpClient.execute(httpPost);
HttpEntity resEntity = response.getEntity();
if (resEntity != null) {
String responseStr = EntityUtils.toString(resEntity).trim();
Log.v(TAG, "Response: " + responseStr);
// you can add an if statement here and do other actions based on the response
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
您需要使用
线程异步任务