Android网络编程之Web Service初步（客户端）

本程序需要在Android项目中导入KSOAP包，注意要放入lib文件夹内

客户端基本流程：定义好命名空间NAMESPACE， URL，SOAP_ACTION, 调用服务方法名等数据 ---> 

实例化SoapObject ---> 实例化SoapSerializationEnvelope 设置其bodyOut等参数 ---> 实例化HttpTransportSE 调用call方法实现web服务

---> 从SoapSerializationEnvelope取回服务器端返回的数据

 

Activity的部署与通信所需基本数据的定义：

public class MainActivity extends Activity {
       
        private EditText enterText = null;
        private Button saveBtn = null;
        private Button loadBtn = null;
        private TextView loadText = null;
       
        // 此处注意命名空间为服务器端包名称
        private static final String NAMESPACE = "http://moka.com" ;
        private static String URL = "http://192.168.1.101:8080/WebServiceTest/services/FileServiceImpl" ;
        private static final String SAVE_METHOD_NAME = "save" ;
        private static final String LOAD_METHOD_NAME = "load" ;
        private static String SOAP_ACTION = "http://192.168.1.101:8080/WebServiceTest/services" ;
       
       
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout. activity_main);
       
        /*下面两段代码使Android3.0以上系统可以让 http代码使用主UI线程,因为3.0以上系统对UI资源的使用更严格*/
        StrictMode. setThreadPolicy(new StrictMode.ThreadPolicy.Builder() 
        .detectDiskReads().detectDiskWrites().detectNetwork() 
        .penaltyLog().build()); 

        StrictMode. setVmPolicy(new StrictMode.VmPolicy.Builder()
        .detectLeakedSqlLiteObjects().penaltyLog()
        .penaltyDeath().build()); 
       
        enterText = (EditText) findViewById(R.id.enterText);
        saveBtn = (Button) findViewById(R.id.saveBtn);
        loadBtn = (Button) findViewById(R.id.loadBtn);
        loadText = (TextView) findViewById(R.id.loadText);
       
        saveBtn.setOnClickListener(new OnSaveListener());
        loadBtn.setOnClickListener(new OnLoadListener());
    }

按钮一调用服务器端save()方法：

        private class OnSaveListener implements OnClickListener {

               @Override
               public void onClick(View v) {
　　　　　　　　　　　　　　// 三步之一，实例化SoapObject
                     SoapObject so = new SoapObject(NAMESPACE, SAVE_METHOD_NAME);
　　　　　　　　　　　　　　// 下面的参数是WebService端方法所需的参数
                     so.addProperty( "fileName", "shuai.txt" );
                     so.addProperty( "content", enterText .getText().toString());
                     
　　　　　　　　　　　　　　// 三步之二， 实例化Envelope
                     SoapSerializationEnvelope sse = new SoapSerializationEnvelope(SoapEnvelope.VER11);
                     sse. bodyOut = so;
                     sse. dotNet = false;
                     sse.setOutputSoapObject(so);
                     
　　　　　　　　　　　　　　// 三步之三， 实例化HttpTransportSE
                     HttpTransportSE htse = new HttpTransportSE(URL);
                     htse.debug = true;
                      try {
                           htse.call( SOAP_ACTION, sse);
                     } catch (IOException e) {
                           e.printStackTrace();
                     } catch (XmlPullParserException e) {
                           e.printStackTrace();
                     }
                     Toast. makeText(MainActivity.this, "成功保存" , Toast.LENGTH_LONG ).show();
              }
       
    }

按钮二调用服务器端load()方法：

        private class OnLoadListener implements OnClickListener {

               @Override
               public void onClick(View v) {
                     SoapObject so = new SoapObject(NAMESPACE, LOAD_METHOD_NAME);
                     so.addProperty( "fileName", "shuai.txt" );
                     
                     SoapSerializationEnvelope sse = new SoapSerializationEnvelope(SoapEnvelope.VER11);
                     sse. bodyOut = so;
                     sse. dotNet = false;
                     sse.setOutputSoapObject(so);
                     
                     HttpTransportSE htse = new HttpTransportSE(URL);
                     htse. debug = true;
                      try {
                           htse.call( SOAP_ACTION, sse);
                     } catch (IOException e) {
                           e.printStackTrace();
                     } catch (XmlPullParserException e) {
                           e.printStackTrace();
                     }
　　　　　　　　　　　　　　
　　　　　　　　　　　　　　// 获取web service返回数据
                     SoapObject result = (SoapObject) sse. bodyIn;
                     MainActivity. this.loadText .setText("返回数据为: " + result.getProperty(0));
              }
              
       }
   
}