使用SOAP Web服務..應用程序無法正常工作

Question

我正在按照本教程使用SOAP Web服務 。 最初，它存在一些問題，但是經過一些操作（在本教程的注釋中已提到），它開始工作，但工作不正常。 問題是，在編輯文本中添加輸入后，當我單擊相應的數字以轉換溫度時，它沒有執行任何操作。 我要粘貼下面的代碼， 這是LogCat （位於pastebin.com的我要粘貼logcat的地方 ） 的外部鏈接，因為在此處添加它超出了問題的允許長度。 任何提示/幫助將不勝感激。 先感謝您。

布局：-

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/textView1"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <EditText
        android:id="@+id/txtFar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" 
        android:hint="@string/editText1">

        <requestFocus />
    </EditText>

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/textView2"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <EditText
        android:id="@+id/txtCel"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" 
        android:hint="@string/editText2"/>

    <LinearLayout
        android:id="@+id/linearLayout1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <Button
            android:id="@+id/btnFar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="0.5"
            android:text="@string/btnFar" />

        <Button
            android:id="@+id/btnCel"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="0.5"
            android:text="@string/btnCel" />

    </LinearLayout>


    <Button
        android:id="@+id/btnClear"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/btnClear" />

</LinearLayout>

碼：-

package com.webservice;

import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class WebServiceDemoActivity extends Activity
{
    /** Called when the activity is first created. */
      private static String SOAP_ACTION1 = "http://tempuri.org/FahrenheitToCelsius";
      private static String SOAP_ACTION2 = "http://tempuri.org/CelsiusToFahrenheit";
      private static String NAMESPACE = "http://tempuri.org/";
      private static String METHOD_NAME1 = "FahrenheitToCelsius";
      private static String METHOD_NAME2 = "CelsiusToFahrenheit";
      private static String URL = "http://www.w3schools.com/webservices/tempconvert.asmx?WSDL";

      Button btnFar,btnCel,btnClear;
      EditText txtFar,txtCel;

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_web_service_demo);

        btnFar = (Button)findViewById(R.id.btnFar);
        btnCel = (Button)findViewById(R.id.btnCel);
        btnClear = (Button)findViewById(R.id.btnClear);
        txtFar = (EditText)findViewById(R.id.txtFar);
        txtCel = (EditText)findViewById(R.id.txtCel);

        btnFar.setOnClickListener(new View.OnClickListener()
        {
                  @Override
                  public void onClick(View v)
                  {
                        //Initialize soap request + add parameters
                  SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME1);       

                  //Use this to add parameters
                  request.addProperty("Fahrenheit",txtFar.getText().toString());

                  //Declare the version of the SOAP request
                  SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);

                  envelope.setOutputSoapObject(request);
                  envelope.dotNet = true;

                  try {
                        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);

                        //this is the actual part that will call the webservice
                        androidHttpTransport.call(SOAP_ACTION1, envelope);

                        // Get the SoapResult from the envelope body.
                        SoapObject result = (SoapObject)envelope.bodyIn;

                        if(result != null)
                        {
                              //Get the first property and change the label text
                              txtCel.setText(result.getProperty(0).toString());
                        }
                        else
                        {
                              Toast.makeText(getApplicationContext(), "No Response",Toast.LENGTH_LONG).show();
                        }
                  } catch (Exception e) {
                        e.printStackTrace();
                  }
                  }
            });

        btnCel.setOnClickListener(new View.OnClickListener()
        {
                  @Override
                  public void onClick(View v)
                  {
                        //Initialize soap request + add parameters
                  SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME2);       

                  //Use this to add parameters
                  request.addProperty("Celsius",txtCel.getText().toString());

                  //Declare the version of the SOAP request
                  SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);

                  envelope.setOutputSoapObject(request);
                  envelope.dotNet = true;

                  try {
                        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);

                        //this is the actual part that will call the webservice
                        androidHttpTransport.call(SOAP_ACTION2, envelope);

                        // Get the SoapResult from the envelope body.
                        SoapObject result = (SoapObject)envelope.bodyIn;

                        if(result != null)
                        {
                              //Get the first property and change the label text
                              txtFar.setText(result.getProperty(0).toString());
                        }
                        else
                        {
                              Toast.makeText(getApplicationContext(), "No Response",Toast.LENGTH_LONG).show();
                        }
                  } catch (Exception e) {
                        e.printStackTrace();
                  }
                  }
            });

        btnClear.setOnClickListener(new View.OnClickListener()
        {
                  @Override
                  public void onClick(View v)
                  {
                        txtCel.setText("");
                        txtFar.setText("");
                  }
            });
    }
}

字符串資源：-

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">Using SOAP Test 2</string>
    <string name="action_settings">Settings</string>
    <string name="hello_world">Hello world!</string>

    <string name= "textView1">Fahrenheit</string>
    <string name="editText1">0</string>
    <string name= "textView2">Celsius</string>
    <string name="editText2">0</string>
    <string name="btnFar">Convert to Celsius</string>
    <string name="btnCel">Convert to Fahrenheit</string>
    <string name="btnClear">Clear</string>

</resources>

清單文件：-

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.webservice"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />

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

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.webservice.WebServiceDemoActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

Answer 1

這是您得到的例外：

java.lang.NoClassDefFoundError: org.ksoap2.serialization.SoapObject

要解決此問題，您需要將ksoap2-android-assembly-2.6.2-jar-with-dependencies.jar復制到項目的/libs文件夾中，然后重新生成項目。 然后，Eclipse ADT將自動將該jar添加到項目的buildpath中。

Answer 2

我遵循了相同的教程。

這對我有用：我改變了

  private static String SOAP_ACTION1 = "http://tempuri.org/FahrenheitToCelsius";
  private static String SOAP_ACTION2 = "http://tempuri.org/CelsiusToFahrenheit";
  private static String NAMESPACE    = "http://tempuri.org/";

與

private static String SOAP_ACTION1 = "http://www.w3schools.com/webservices/FahrenheitToCelsius";
private static String SOAP_ACTION2 = "http://www.w3schools.com/webservices/CelsiusToFahrenheit";
private static String NAMESPACE    = "http://www.w3schools.com/webservices/";

為了找到正確的名稱空間，您必須瀏覽Web服務URL。 在這種情況下： http : //www.w3schools.com/webservices/tempconvert.asmx?WSDL 。 然后，您可以在targetNamespace =“ ........”中找到正確的名稱空間。