Java GbaRequest:构造函数名为222 userAgent Apache HttpClient/UNAVAILABLE解析XML文件

使用以下代码，我解析来自远程服务器的xml文件

import java.io.IOException;
import java.io.StringReader;
import java.io.UnsupportedEncodingException;

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

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import android.util.Log;

public class XMLParser {

    // constructor
    public XMLParser() {

    }

    /**
     * Getting XML from URL making HTTP request
     * @param url string
     * */
    public String getXmlFromUrl(String url) {
        String xml = null;

        try {
            // defaultHttpClient
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpPost httpPost = new HttpPost(url);
            HttpResponse httpResponse = httpClient.execute(httpPost);
        //  HttpResponse httpResponse = httpClient.execute(new HttpGet(url));
            HttpEntity httpEntity = httpResponse.getEntity();
            xml = EntityUtils.toString(httpEntity);

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        // return XML
        return xml;
    }

    /**
     * Getting XML DOM element
     * @param XML string
     * */
    public Document getDomElement(String xml){
        Document doc = null;
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        try {

            DocumentBuilder db = dbf.newDocumentBuilder();

            InputSource is = new InputSource();
                is.setCharacterStream(new StringReader(xml));
                doc = db.parse(is); 

            } catch (ParserConfigurationException e) {
                Log.e("Error: ", e.getMessage());
                return null;
            } catch (SAXException e) {
                Log.e("Error: ", e.getMessage());
                return null;
            } catch (IOException e) {
                Log.e("Error: ", e.getMessage());
                return null;
            }

            return doc;
    }

    /** Getting node value
      * @param elem element
      */
     public final String getElementValue( Node elem ) {
         Node child;
         if( elem != null){
             if (elem.hasChildNodes()){
                 for( child = elem.getFirstChild(); child != null; child = child.getNextSibling() ){
                     if( child.getNodeType() == Node.TEXT_NODE  ){
                         return child.getNodeValue();
                     }
                 }
             }
         }
         return "";
     }

     /**
      * Getting node value
      * @param Element node
      * @param key string
      * */
     public String getValue(Element item, String str) {     
            NodeList n = item.getElementsByTagName(str);        
            return this.getElementValue(n.item(0));
        }
}

在android 2.2手机设备上，此代码运行良好，但在android 4.4平板电脑设备LogCat上的测试显示以下错误：

W/System.err(4820): [DEBUG] GbaRequest - GbaRequest: Constructor Called 222 userAgent Apache-HttpClient/UNAVAILABLE (java 1.4)
W/System.err(4820): [DEBUG] NafRequest - NafRequest: NafRequest constructor===useragent Apache-HttpClient/UNAVAILABLE (java 1.4)
I/System.out(4820): Thread-1(ApacheHTTPLog):Reading from variable values from setDefaultValuesToVariables
I/System.out(4820): Thread-1(ApacheHTTPLog):isShipBuild true
I/System.out(4820): Thread-1(ApacheHTTPLog):SmartBonding Enabling is false, SHIP_BUILD is true, log to file is false, DBG is false
I/System.out(4820): main calls detatch()

我发现了一个错误相同但没有答案的问题

你能帮我理解这种错误吗

谢谢。

这里是我的工作代码：

// UPDATE
private class UPD_Async extends AsyncTask<String, String, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(youractivity.this);
pDialog.setTitle("UPDATE");
pDialog.setMessage("Loading...");
pDialog.setIndeterminate(false);
pDialog.show();
}

@Override
protected Void doInBackground(String... Url) {
    try{
String xml = parser.getXmlFromUrl(URL1); // getting XML
Document doc = parser.getDomElement(xml); // getting DOM
nodes = doc.getElementsByTagName(KEY_ITEM);
if(nodes!=null){upd1=true;}
    }catch (Exception e) { Log.d("parser error", "parser error");
    upd1=false;
    }
    return null;
}

@Override
protected void onPostExecute(Void args) {
{
    if (upd1==false){TV1.setText("update error");}
    else {ResultUPD();}
}
pDialog.dismiss();
}}

private void ResultUPD(){
datasource.open();
for (int i = 0; i < nodes.getLength(); i++)
{
Element e = (Element) nodes.item(i);
row_number = parser.getValue(e, "row_number");
....}
datasource.close();
if(nodes.getLength()>0){TV1.setText("update ok");}
}

//更新
私有类UPD_Async扩展AsyncTask{
@凌驾
受保护的void onPreExecute（）{
super.onPreExecute（）；
pDialog=newprogressdialog（youractivity.this）；
pDialog.setTitle（“更新”）；
设置消息（“加载…”）；
pDialog.setUndeterminate（假）；
pDialog.show（）；
}
@凌驾
受保护的Void doInBackground（字符串…Url）{
试一试{
字符串xml=parser.getXmlFromUrl（URL1）；//获取xml
Document doc=parser.getDoElement（xml）；//获取DOM
节点=doc.getElementsByTagName（键项）；
如果（nodes！=null）{upd1=true；}
}catch（异常e）{Log.d（“解析器错误”，“解析器错误”）；
upd1=假；
}
返回null；
}
@凌驾
受保护的void onPostExecute（void args）{
{
如果（upd1==false）{TV1.setText（“更新错误”）；}
else{ResultUPD（）；}
}
pDialog.disclose（）；
}}
私有void ResultUPD（）{
datasource.open（）；
对于（int i=0；i0）{TV1.setText（“更新确定”）；}
}

解决了AsyncTask中运行代码的问题。我写了最初的文章，但我仍然无法理解这一点。当你说你使用了异步任务时，具体在哪里？我使用AsyncTasks来运行我的所有查询，但我仍然收到这个消息。