Android使用ksoap2调用C#webservice体会(转)

1，在AdroidManifest.xml中加入权限

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

2,导入ksoap2包

在java中使用的PC版WebService客户端库非常丰富，例如，Axis2、CXF等，但这些开发包对于android来说过于庞大，也未必很容易移植到android上。适合手机的WebService客户端SDK也有一些。本例使用了比较常用的KSOAP2。读者可以从如下的地址下载Android版的KSOAP2。

http://code.google.com/p/ksoap2-android/wiki/HowToUse?tm=2

将下载下来的包引用到android项目后就可以使用了，在引用jar包后可能会抛出警告"warning: Ignoring InnerClasses attribute for an anonymous inner class that doesn't come with an associated EnclosingMethod attribute. (This class was probably produced by a broken compiler.)”，在网上搜索了一下，这可能是因为版本的问题，但是不影响使用。好了废话不多说，直接上代码。

服务器端的webservice文件Demo.asmx

<%@ WebService Language="C#" Class="Demo" %>
 
using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
 
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
//若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。 
// [System.Web.Script.Services.ScriptService]
public class Demo  : System.Web.Services.WebService {
    [WebMethod]
    public string HelloWorld() {
        return "Hello World";
    }
     
    [WebMethod]
    public string Add(int x, int y) {
        int z = x + y;
        return z.ToString();
    }
}

下面就是我测试用的手机端的代码了,首先来看我们的xml布局文件 demo.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:orientation="vertical">
  <TextView android:id="@+id/tv"
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:padding="10dip">
  </TextView>
</LinearLayout>

Demo.java，在下面的代码中，如果你的WebService方法没有参数，可以把step2省略掉。

package com.studio.basf.android;
 
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.Bundle;
import android.widget.TextView;
 
public class Demo extends Activity {
    private String NameSpace = "http://tempuri.org/";
    private String MethodName = "Add";
    private String url = "http://192.168.1.93/services/Demo.asmx";
    private String soapAction = NameSpace + MethodName;
    private TextView tv;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.demo);
 
        tv = (TextView) findViewById(R.id.tv);
        tv.setText(ws());
    }
 
    public String ws() {
        String result = "";
        try {
            //step1 指定WebService的命名空间和调用的方法名
            SoapObject request = new SoapObject(NameSpace, MethodName); 
             
            //step2 设置调用方法的参数值,这里的参数名称最好和WebService一致
            request.addProperty("x", 5);
            request.addProperty("y", 6);
             
            //step3 生成调用WebService方法的SOAP请求信息,并指定SOAP的版本
            SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                    SoapEnvelope.VER11);
            //设置是否调用的是dotNet下的WebService
            envelope.dotNet = true;
            //必须，等价于envelope.bodyOut = request; 
            envelope.setOutputSoapObject(request);
             
            //step4 创建HttpTransportSE对象
            HttpTransportSE ht = new HttpTransportSE(url);
            //step5 调用WebService
            ht.call(soapAction, envelope);
             
            //step6 使用getResponse方法获得WebService方法的返回结果
            if(envelope.getResponse()!=null){
                SoapPrimitive response = (SoapPrimitive) envelope.getResponse();
                result = response.toString();
            }
 
        } catch (Exception e) {
            result = e.getMessage();
        }
        return result;
    }
}