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：

 1 public class MainActivity extends Activity {
 2        
 3         private EditText enterText = null;
 4         private Button saveBtn = null;
 5         private Button loadBtn = null;
 6         private TextView loadText = null;
 7        
 8         // 此处注意命名空间为服务器端包名称
 9         private static final String NAMESPACE = "http://moka.com" ;
10         private static String URL = "http://192.168.1.101:8080/WebServiceTest/services/FileServiceImpl" ;
11         private static final String SAVE_METHOD_NAME = "save" ;
12         private static final String LOAD_METHOD_NAME = "load" ;
13         private static String SOAP_ACTION = "http://192.168.1.101:8080/WebServiceTest/services" ;
14        
15        
16     @Override
17     public void onCreate(Bundle savedInstanceState) {
18         super.onCreate(savedInstanceState);
19         setContentView(R.layout. activity_main);
20        
21         /*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*/
22         StrictMode. setThreadPolicy(new StrictMode.ThreadPolicy.Builder() 
23         .detectDiskReads().detectDiskWrites().detectNetwork() 
24         .penaltyLog().build()); 
25 
26         StrictMode. setVmPolicy(new StrictMode.VmPolicy.Builder()
27         .detectLeakedSqlLiteObjects().penaltyLog()
28         .penaltyDeath().build()); 
29        
30         enterText = (EditText) findViewById(R.id.enterText);
31         saveBtn = (Button) findViewById(R.id.saveBtn);
32         loadBtn = (Button) findViewById(R.id.loadBtn);
33         loadText = (TextView) findViewById(R.id.loadText);
34        
35         saveBtn.setOnClickListener(new OnSaveListener());
36         loadBtn.setOnClickListener(new OnLoadListener());
37     }

按钮一调用服务器端save()方法：

 1         private class OnSaveListener implements OnClickListener {
 2 
 3                @Override
 4                public void onClick(View v) {
　　　　　　　　　　　　　　// 三步之一，实例化SoapObject
 5                      SoapObject so = new SoapObject(NAMESPACE, SAVE_METHOD_NAME);
　　　　　　　　　　　　　　// 下面的参数是WebService端方法所需的参数
 6                      so.addProperty( "fileName", "shuai.txt" );
 7                      so.addProperty( "content", enterText .getText().toString());
 8                      
　　　　　　　　　　　　　　// 三步之二， 实例化Envelope
 9                      SoapSerializationEnvelope sse = new SoapSerializationEnvelope(SoapEnvelope.VER11);
10                      sse. bodyOut = so;
11                      sse. dotNet = false;
12                      sse.setOutputSoapObject(so);
13                      
　　　　　　　　　　　　　　// 三步之三， 实例化HttpTransportSE
14                      HttpTransportSE htse = new HttpTransportSE(URL);
15                      htse.debug = true;
16                       try {
17                            htse.call( SOAP_ACTION, sse);
18                      } catch (IOException e) {
19                            e.printStackTrace();
20                      } catch (XmlPullParserException e) {
21                            e.printStackTrace();
22                      }
23                      Toast. makeText(MainActivity.this, "成功保存" , Toast.LENGTH_LONG ).show();
24               }
25        
26     }

按钮二调用服务器端load()方法：

 1         private class OnLoadListener implements OnClickListener {
 2 
 3                @Override
 4                public void onClick(View v) {
 5                      SoapObject so = new SoapObject(NAMESPACE, LOAD_METHOD_NAME);
 6                      so.addProperty( "fileName", "shuai.txt" );
 7                      
 8                      SoapSerializationEnvelope sse = new SoapSerializationEnvelope(SoapEnvelope.VER11);
 9                      sse. bodyOut = so;
10                      sse. dotNet = false;
11                      sse.setOutputSoapObject(so);
12                      
13                      HttpTransportSE htse = new HttpTransportSE(URL);
14                      htse. debug = true;
15                       try {
16                            htse.call( SOAP_ACTION, sse);
17                      } catch (IOException e) {
18                            e.printStackTrace();
19                      } catch (XmlPullParserException e) {
20                            e.printStackTrace();
21                      }
　　　　　　　　　　　　　　
　　　　　　　　　　　　　　// 获取web service返回数据
22                      SoapObject result = (SoapObject) sse. bodyIn;
23                      MainActivity. this.loadText .setText("返回数据为: " + result.getProperty(0));
24               }
25               
26        }
27    
28 }