如何從xml數據表中獲取所需的數據/值？

Question

嗨我正在處理客戶端/服務器應用程序。我能夠以xml格式從服務器獲得響應。但現在我必須整理或過濾數據。我使用下面的代碼從服務器的應答，它是工作的罰款

package com.example.KsoapExample; 

import android.util.Log; 
import org.ksoap2.HeaderProperty; 
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 java.io.IOException; 
import java.net.Proxy; 
import java.net.SocketTimeoutException; 
import java.util.ArrayList; 
import java.util.List; 

/** 
* Created with IntelliJ IDEA. 
* User: Sashen 
* Date: 12/17/13 
* Time: 10:58 AM 
* To change this template use File | Settings | File Templates. 
*/ 
public class SoapRequests { 

    private static final boolean DEBUG_SOAP_REQUEST_RESPONSE = true; 
    // 
    private static final String MAIN_REQUEST_URL ="http://192.168.0.7/xx/service.asmx"; 
    private static final String NAMESPACE = "http://tempuri.org/"; 
    private static final String SOAP_ACTION = "http://tempuri.org/"; 
    private static String SESSION_ID; 
    public static String Toaster=null ; 

    private final void testHttpResponse(HttpTransportSE ht) { 
     ht.debug = DEBUG_SOAP_REQUEST_RESPONSE; 
     if (DEBUG_SOAP_REQUEST_RESPONSE) { 
      Log.v("SOAP RETURN", "Request XML:\n" + ht.requestDump); 
      Log.v("SOAP RETURN", "\n\n\nResponse XML:\n" + ht.responseDump) 
      ; 
      Toaster=ht.responseDump; 
     } 
    } 

    public String getCelsiusConversion(String fValue) { 
     String data = null; 
     String methodname = "GetServerStatus"; 

     SoapObject request = new SoapObject(NAMESPACE, methodname); 
     request.addProperty("username", "admin"); 
     request.addProperty("password", "admin"); 

     SoapSerializationEnvelope envelope = getSoapSerializationEnvelope(request); 

     HttpTransportSE ht = getHttpTransportSE(); 
     try { 
      ht.call(SOAP_ACTION + methodname, envelope); 
      testHttpResponse(ht); 
      SoapPrimitive resultsString = (SoapPrimitive)envelope.getResponse(); 

      List<HeaderProperty> COOKIE_HEADER = (List<HeaderProperty>) ht.getServiceConnection().getResponseProperties(); 

      for (int i = 0; i < COOKIE_HEADER.size(); i++) { 
       String key = COOKIE_HEADER.get(i).getKey(); 
       String value = COOKIE_HEADER.get(i).getValue(); 

       if (key != null && key.equalsIgnoreCase("set-cookie")) { 
        SoapRequests.SESSION_ID = value.trim(); 
        Log.v("SOAP RETURNCookiee", "Cookie :" + SoapRequests.SESSION_ID); 
        break; 
       } 
      } 
      data = resultsString.toString(); 

     } catch (SocketTimeoutException t) { 
      t.printStackTrace(); 
     } catch (IOException i) { 
      i.printStackTrace(); 
     } catch (Exception q) { 
      q.printStackTrace(); 
     } 
     return data; 
    } 

    private final SoapSerializationEnvelope getSoapSerializationEnvelope(SoapObject request) { 
     SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); 
     envelope.dotNet = true; 
     envelope.implicitTypes = true; 
     envelope.setAddAdornments(false); 
     envelope.setOutputSoapObject(request); 
     return envelope; 
    } 

    private final HttpTransportSE getHttpTransportSE() { 
     HttpTransportSE ht = new HttpTransportSE(Proxy.NO_PROXY,MAIN_REQUEST_URL,60000); 
     ht.debug = true; 
     ht.setXmlVersionTag("<?xml version=\"1.0\" encoding= \"UTF-8\" ?>"); 
     return ht; 
    } 

    private final List<HeaderProperty> getHeader() { 
     List<HeaderProperty> header = new ArrayList<HeaderProperty>(); 
     HeaderProperty headerPropertyObj = new HeaderProperty("cookie", SoapRequests.SESSION_ID); 
     header.add(headerPropertyObj); 
     return header; 
    } 
} 

，並在日誌中我可以看到服務器是給我的數據，也是我正在服用這些數據轉換爲文本字段，但它如下所示

<NewDataSet> 
<Table> 
<ServerStatus>Active</ServerStatus > 
</Table> 
</NewDataSet> 

在哪裏，我要帶出來，只顯示「ServerStatus」，也就是eiter活動，不活動等，我看到了許多技術，如pullparser但他們有自己的HTTP連接方法，我不想用。所以現在告訴我該怎麼做。請幫助

我得到了響應，並在文本框顯示它很喜歡

<NewDataSet> 
    <Table1> 
    <ServerStatus>Standby</ServerStatus> 
    </Table1> 
    </NewDataSet> 

Answer 1

假設你從服務器的應答並將其存儲在result。

String result = "<NewDataSet><Table><ServerStatus>Active</ServerStatus></Table></NewDataSet>"; 

    String status = "error"; 

    Document dom = null; 
    DocumentBuilder builder; 
    DocumentBuilderFactory factory; 
    try { 
    InputStream resultStream = new ByteArrayInputStream(result.getBytes("UTF-8")); 
    factory = DocumentBuilderFactory.newInstance(); 
    builder = factory.newDocumentBuilder(); 
    dom = builder.parse(resultStream); 
    } catch (UnsupportedEncodingException e) { 
    e.printStackTrace(); 
    } catch (ParserConfigurationException e) { 
    e.printStackTrace(); 
    } catch (SAXException e) { 
    e.printStackTrace(); 
    } catch (IOException e) { 
    e.printStackTrace(); 
    } 
    if(dom != null) { 
    NodeList nodeList = dom.getElementsByTagName("Table"); 
    for (int itr = 0; itr < nodeList.getLength(); itr++) { 
     Node node = nodeList.item(itr); 
     if (node.getNodeType() == Node.ELEMENT_NODE) { 
     Element eElement = (Element) node; 
     status = eElement.getElementsByTagName("ServerStatus").item(0).getTextContent(); 
     } 
    } 
    } 
    Log.d(TAG, status); 

進口：

import java.io.ByteArrayInputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.UnsupportedEncodingException; 

import javax.xml.parsers.DocumentBuilder; 
import javax.xml.parsers.DocumentBuilderFactory; 
import javax.xml.parsers.ParserConfigurationException; 

import org.w3c.dom.Document; 
import org.w3c.dom.Element; 
import org.w3c.dom.Node; 
import org.w3c.dom.NodeList; 
import org.xml.sax.SAXException;