使用KSOAP 2从Android访问.NET Web服务。 [英] Accessing a .NET Web Service from an Android using KSOAP 2.

问题描述

下午好，



这里我使用Android处理程序来执行后台任务。使用kso​​ap2库从Android访问基于SOAP的Web服务。我必须遵循以下步骤完成此任务。



1.将ksoap2添加到Android项目的java构建路径。

2. MainActivity的代码.java类

  package  com.example.webservicecalling; 
 
  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.app.Activity; 
  import  android.os.AsyncTask; 
  import  android.os.Bundle; 
  import  android.view.Menu; 
  import  android.view.MenuItem; 
  import  android.widget.TextView; 
  import  android.support.v7.app.ActionBarActivity; 
  import  android.os.Bundle; 
  import  android.view.Menu; 
  import  android.view.MenuItem; 
 
 
 
  import  com.example.webservicecalling.R; 
 
  public   class  MainActivity  extends  ActionBarActivity {
 
  public   final   static  字符串 URL =   http://www.w3schools.com/webservices/tempconvert.asmx; 
  public   final   static  < span class =code-sdkkeyword> String  SOAP_ACTION =   http://tempuri.org/CelsiusToFahrenheit ; 
 
 
  public   static   final  字符串 NAMESPACE =   http ：//tempuri.org/; 
 
  private   static   final  字符串 METHOD =   CelsiusToFahrenheit; 
 
 
  private  TextView temperatureTxt; 
 
  @ Override  
  protected   void  onCreate（Bundle savedInstanceState）{
 
  super  .onCreate（savedInstanceState）; 
 setContentView（R.layout.activity_main）; 
 init（）; 
} 
 
  private   void  init（）{
 temperatureTxt =（TextView）findViewById（R.id.textView1）; 
 
  new  ConversionAsyncTask（）。execute（）; 
} 
 
  @覆盖 
  public   boolean  onCreateOptionsMenu（菜单菜单）{
  //  充气菜单;如果项目存在，则会将项目添加到操作栏。 
 getMenuInflater（）。inflate（R.menu.main，menu）; 
 返回 true; 
} 
 
  @覆盖 
  public   boolean  onOptionsItemSelected（MenuItem item）{
  //   Handle操作栏项目点击此处。操作栏将 
  //  自动处理Home / Up按钮上的点击，  
  //  在AndroidManifest.xml中指定父活动。 
  int  id = item.getItemId（）; 
  if （id == R.id.action_settings）{
  return  true ; 
} 
  return   super  .onOptionsItemSelected（item）; 
} 
 
  private   class  ConversionAsyncTask  extends  AsyncTask< void，> {
 私人 SoapPrimitive响应; 
 
  @ Override  
  protected  Void doInBackground（Void ... params）{
 SoapSerializationEnvelope soapEnvelope =  new  SoapSerializationEnvelope（
 SoapEnvelope.VER11）; 
 
 SoapObject request =  new  SoapObject（NAMESPACE，METHOD）; 
 soapEnvelope.setOutputSoapObject（request）; 
 
 soapEnvelope.dotNet = true; 
 
 尝试 {
 HttpTransportSE aht =  new  HttpTransportSE（URL） ; 
 aht.call（SOAP_ACTION，soapEnvelope）; 
 request.addProperty（  Celsius，   32）; 
 response =（SoapPrimitive）soapEnvelope.getResponse（）; 
 
}  catch （例外e）{
 e.printStackTrace（）; 
} 
 
  return  null; 
} 
 
  @覆盖 
 受保护  void  onPostExecute（无效结果）{
  super  .onPostExecute（result）; 
 temperatureTxt.setText（ 状态： +响应）; 
 
} 
} 
 
 
} 

3.在应用程序标签之前为AndroidManifest添加互联网权限

 <   uses-permission     android：name   =  android.permission.INTERNET    xmlns：android   = ＃unknown    /  >  
 

4. activity_main.xml的代码

 <   relativelayout     xmlns：android   =  http://schemas.android.com/apk/res/android >  
 xmlns：tools =http://schemas.android.com/tools
 android：layout_width =match_parent
 android：layout_height =match_parent
 android：paddingBottom =@ dimen / activity_vertical_margin
 android：paddingLeft =@ dimen / activity_horizo​​ntal_margin
 android：paddingRight =@ dimen / activity_horizo​​ntal_margin
 android：paddingTop =@ dimen / activity_vertical_margin
 tools：context =com.example.webservicecalling.MainActivity> 
 
 <   textview  > ;  
 android：id =@ + id / textView1
 android：layout_width =wrap_content
 android：layout_height =wrap_content
 android：text = @ string / hello_world/> 
 
 <   / textview   >  <   / relativelayout  >  

运行应用程序后，Web服务响应在模拟器中显示为null。你能不能在这个方面给我建议。我必须尝试差不多但没有得到出局。



问候，



Ramesh.N

解决方案

  public   final   static  字符串 SOAP_ACTION =   http://tempuri.org/CelsiusToFahrenheit; 
  public   static   final  < span class =code-sdkkeyword> String  NAMESPACE =   http://tempuri.org/ ; 

更改为

< pre lang =   java> public  final   static  字符串 SOAP_ACTION =   http ：//www.w3schools.com/webservices/CelsiusToFahrenheit; 
  public   static   final  < span class =code-sdkkeyword> String  NAMESPACE =   http://www.w3schools.com / web服务/; 

Good Afternoon,

Here I use Android Handlers to perform the background task.To access SOAP based web service from Android using ksoap2 library.I have to follow the below steps to complete this task.

1.Add ksoap2 to the java build path of Android project.
2.Code for the MainActivity.java class

package com.example.webservicecalling;

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.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;



import com.example.webservicecalling.R;

public class MainActivity extends ActionBarActivity {
	
   	public final static String URL = "http://www.w3schools.com/webservices/tempconvert.asmx";
	    public final static String SOAP_ACTION = "http://tempuri.org/CelsiusToFahrenheit";
	
	
	public static final String NAMESPACE = "http://tempuri.org/";
	
	private static final String METHOD = "CelsiusToFahrenheit";
	
	  
	private TextView temperatureTxt;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		init();
}

	private void init() {
		temperatureTxt = (TextView) findViewById(R.id.textView1);
		
		new ConversionAsyncTask().execute();
	}
	
	@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;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		// Handle action bar item clicks here. The action bar will
		// automatically handle clicks on the Home/Up button, so long
		// as you specify a parent activity in AndroidManifest.xml.
		int id = item.getItemId();
		if (id == R.id.action_settings) {
			return true;
		}
		return super.onOptionsItemSelected(item);
	}
     
	private class ConversionAsyncTask extends AsyncTask<void,> {
		private SoapPrimitive response;

		@Override
		protected Void doInBackground(Void... params) {
			SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(
					SoapEnvelope.VER11);
			
			SoapObject request = new SoapObject(NAMESPACE, METHOD);
			soapEnvelope.setOutputSoapObject(request);
			
			soapEnvelope.dotNet = true;
			
			try {
				HttpTransportSE aht = new HttpTransportSE(URL);
				aht.call(SOAP_ACTION, soapEnvelope);
				request.addProperty("Celsius","32");
				response = (SoapPrimitive) soapEnvelope.getResponse();
			
			} catch (Exception e) {
				e.printStackTrace();
			}
			
               return null;
		}
		
		@Override
		protected void onPostExecute(Void result) {
			super.onPostExecute(result);
			temperatureTxt.setText("Status:" + response);
			           
		}
	}
		 

}

3.Add internet permission to AndroidManifest before the application tag

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

4.Code for the activity_main.xml

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android">
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.webservicecalling.MainActivity" >

    <textview>
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world"  />

</textview></relativelayout>

After running the application, web service response displayed as null in emulator. Could you please suggest me on this.i have to tried almost but not getting the out put.

Regards,

Ramesh.N

解决方案

public final static String SOAP_ACTION = "http://tempuri.org/CelsiusToFahrenheit";
public static final String NAMESPACE = "http://tempuri.org/";

change to

<pre lang="java">public final static String SOAP_ACTION = "http://www.w3schools.com/webservices/CelsiusToFahrenheit";
public static final String NAMESPACE = "http://www.w3schools.com/webservices/";

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