Android调用webservice接口

前言：

WebService是一种基于SOAP协议的远程调用标准，通过webservice可以将不同操作系统平台、不同语言、不同技术整合到一块。在Android SDK中并没有提供调用WebService的库，因此，需要使用第三方的SDK来调用WebService。Android中ksoap2是WebService常用的sdk。

一、使用方法

1、工具类封装

package com.dj.webserviceapp;import android.os.Handler;import android.os.Message;import org.ksoap2.SoapEnvelope;import org.ksoap2.serialization.SoapObject;import org.ksoap2.serialization.SoapSerializationEnvelope;import org.ksoap2.transport.HttpTransportSE;import org.xmlpull.v1.XmlPullParserException;import java.io.IOException;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class WebServiceUtils {    // 含有3个线程的线程池    private static final ExecutorService executorService = Executors.newFixedThreadPool(3);//限制线程池大小为3的线程池    public static void callWebService(String url, String namespace, String methodName, HashMap properties, final WebServiceCallBack webServiceCallBack){        //创建HttpTransportSE对象，传递WebService服务器地址        final HttpTransportSE httpTransportSE = new HttpTransportSE(url);        //创建SoapObject对象        final SoapObject soapObject = new SoapObject(namespace,methodName);        //SoapObject添加参数        if (properties != null){            for (Iterator> it = properties.entrySet().iterator(); it.hasNext();){                Map.Entry entry = it.next();                soapObject.addProperty(entry.getKey(),entry.getValue());            }        }        //实例化SoapSerializationEnvelope,传入WebService的SOAP协议的版本号        final SoapSerializationEnvelope soapSerializationEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);        //设置是否调用的是.NET开发的WebService        soapSerializationEnvelope.setOutputSoapObject(soapObject);        soapSerializationEnvelope.dotNet = true;        httpTransportSE.debug = true;        //用于子线程与主线程通信的Handler        final Handler mHandler = new Handler(){            @Override            public void handleMessage(Message msg) {                super.handleMessage(msg);                //将返回值回调到callBack的参数中                webServiceCallBack.callBack((SoapObject) msg.obj);            }        };        //开启线程去访问WebService        executorService.submit(new Runnable() {            @Override            public void run() {                SoapObject resultSoapObject = null;                try {                    httpTransportSE.call(namespace + methodName,soapSerializationEnvelope);                    if (soapSerializationEnvelope.getResponse() != null){                        //获取服务器响应返回的SoapObject                        resultSoapObject = (SoapObject) soapSerializationEnvelope.bodyIn;                    }                } catch (IOException e) {                    e.printStackTrace();                } catch (XmlPullParserException e) {                    e.printStackTrace();                }finally {                    //将获取的消息通过handler发到主线程                    mHandler.sendMessage(mHandler.obtainMessage(0,resultSoapObject));                }            }        });    }    public interface WebServiceCallBack{        void callBack(SoapObject result);    }}

从上面代码可以看出，调用webservice需要传4个参数：url，命名空间，方法名，还有给后端的参数。

每个 XML Web services 都需要一个唯一的命名空间，以便客户端应用程序能够将它与 Web 上的其他服务区分开。

2、使用

public class MainActivity extends AppCompatActivity {    TextView textView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        textView = findViewById(R.id.text);    }    String url = "xxxxxxxxxxxxxxxxxxx";    String nameSpace = "xxxxxxxxxxxxxxx";    public void clickBt(View v) {//        HashMap properties = new HashMap();//        properties.put("params1", "xxxxx");        //如果有请求字段则写properties,否则将properties至为null即可        WebServiceUtils.callWebService(url, nameSpace, "GetStockList", null, new WebServiceUtils.WebServiceCallBack() {            @Override            public void callBack(SoapObject result) {                if (result != null) {                    Log.d("result",result.toString());                }            }        });    }}

demo：https://gitee.com/helloworldjie/WebServiceApp

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