在Android應用中,我們經常會與網絡上的服務端的程序(J2EE或者.NET等應用)進行交互,通信。
本實例將向大家詳細介紹,在android中如何調用服務器端提供的webservice,實現典型的分布式應用。
- package cn.itcast.mobile.address;
-
- import java.io.InputStream;
-
- import cn.itcast.service.MobileInfoService;
- import android.app.Activity;
- import android.os.Bundle;
- import android.util.Log;
- import android.view.View;
- import android.widget.Button;
- import android.widget.EditText;
- import android.widget.TextView;
- import android.widget.Toast;
-
- public class MainActivity extends Activity {
- private EditText mobileText;
- private TextView addressView;
- private static final String TAG = "MainActivity";
-
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
-
- mobileText = (EditText)this.findViewById(R.id.mobile);
- addressView = (TextView)this.findViewById(R.id.address);
- Button button = (Button)this.findViewById(R.id.button);
- button.setOnClickListener(new View.OnClickListener() {
- @Override
- public void onClick(View v) {
- String mobile = mobileText.getText().toString();
- InputStream inStream = this.getClass().getClassLoader().getResourceAsStream("mobilesoap.xml");
- try {
- addressView.setText(MobileInfoService.getMobileAddress(inStream, mobile));
- } catch (Exception e) {
- Log.e(TAG, e.toString());
- Toast.makeText(MainActivity.this, "查詢失敗", 1).show();
- }
- }
- });
- }
- }
界面文件:
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:orientation="vertical"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- >
- <TextView
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- android:text="@string/mobile"
- />
-
- <EditText
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- android:id="@+id/mobile"
- />
-
- <Button
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:text="@string/button"
- android:id="@+id/button"
- />
-
- <TextView
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- android:id="@+id/address"
- />
- </LinearLayout>
重點實現代碼:
- package cn.itcast.service;
-
- import java.io.InputStream;
- import java.io.OutputStream;
- import java.net.HttpURLConnection;
- import java.net.URL;
- import java.util.HashMap;
- import java.util.Map;
- import java.util.regex.Matcher;
- import java.util.regex.Pattern;
-
- import org.xmlpull.v1.XmlPullParser;
-
- import android.util.Xml;
- import cn.itcast.utils.StreamTool;
-
- public class MobileInfoService {
-
-
- private static String readSoapFile(InputStream inStream, String mobile) throws Exception{
- byte[] data = StreamTool.readInputStream(inStream);
- String soapxml = new String(data);
- Map<String, String> params = new HashMap<String, String>();
- params.put("mobile", mobile);
- return replace(soapxml, params);
- }
-
-
- public static String replace(String xml, Map<String, String> params)throws Exception{
- String result = xml;
- if(params!=null && !params.isEmpty()){
- for(Map.Entry<String, String> entry : params.entrySet()){
- String name = "\\{1}quot;+ entry.getKey();
- Pattern pattern = Pattern.compile(name);
- Matcher matcher = pattern.matcher(result);
- if(matcher.find()){
- result = matcher.replaceAll(entry.getValue());
- }
- }
- }
- return result;
- }
-
- public static String getMobileAddress(InputStream inStream, String mobile)throws Exception{
- String soap = readSoapFile(inStream, mobile);
- byte[] data = soap.getBytes();
- URL url = new URL("http://webservice.webxml.com.cn/WebServices/MobileCodeWS.asmx");
- HttpURLConnection conn = (HttpURLConnection)url.openConnection();
- conn.setRequestMethod("POST");
- conn.setConnectTimeout(5 * 1000);
- conn.setDoOutput(true);//如果通過post提交數據,必須設置允許對外輸出數據
- conn.setRequestProperty("Content-Type", "application/soap+xml; charset=utf-8");
- conn.setRequestProperty("Content-Length", String.valueOf(data.length));
- OutputStream outStream = conn.getOutputStream();
- outStream.write(data);
- outStream.flush();
- outStream.close();
- if(conn.getResponseCode()==200){
- return parseResponseXML(conn.getInputStream());
- }
- return null;
- }
-
- private static String parseResponseXML(InputStream inStream) throws Exception{
- XmlPullParser parser = Xml.newPullParser();
- parser.setInput(inStream, "UTF-8");
- int eventType = parser.getEventType();//產生第一個事件
- while(eventType!=XmlPullParser.END_DOCUMENT){//只要不是文檔結束事件
- switch (eventType) {
- case XmlPullParser.START_TAG:
- String name = parser.getName();//獲取解析器當前指向的元素的名稱
- if("getMobileCodeInfoResult".equals(name)){
- return parser.nextText();
- }
- break;
- }
- eventType = parser.next();
- }
- return null;
- }
- }
最後提醒大家一句,記得在項目清單文件中,加入網絡訪問權限。
<!-- 訪問網絡的權限 -->
<uses-permission android:name="android.permission.INTERNET"/>