使用KXML解析xml数据

最近做项目，服务器传过来的都是Xml格式的数据，需要解析xml，本来使用的是jsr182这个包，没问题（唯一不足的是手机顽童不支持jsr182，当碰到解析xml数据时，模拟器一闪而过！）。后来看到KXML这个第三方包，听说效率不错，于是用了，结果导入该jar包后总是出现java.lang.NoClassDefFoundError: org/xmlpull/v1/XmlPullParserException
很是郁闷！于是干脆下载了源代码，把源代码copy到工程中，运行没问题。
另外nanoXML也可以解析xml，它是一次性加载数据然后解析，当数据量大的时候估计内存吃不消。还有nanoXML的源码中怎么有j2se的类？直接导致我彻底放弃nanoXML。
下面是我用KXML做的代码，大家可以参考：

import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import javax.microedition.io.Connector;
import javax.microedition.io.HttpConnection;
import org.kxml2.io.KXmlParser;
import org.xmlpull.v1.XmlPullParserException;

public class Connection implements Runnable{
	private boolean isProxy = false; //是否使用代理
	private HttpConnection conn=null;
	private String url;
	private String sendDate;
	private int connTimes = 0;
	public Connection(String url,String sendDate){
		this.url=url;
		this.sendDate=sendDate;
	}

	private void send(){
		InputStream is = null;
		try{
			if(isProxy){//使用代理
				System.out.println("启用http代理连接");
				conn = (HttpConnection) Connector.open("http://10.0.0.172/");
				conn.setRequestMethod(HttpConnection.GET);
				conn.setRequestProperty("X-Online-Host", url);
				conn.setRequestProperty("User-Agent", "Profile/MIDP-2.0 Configuration/CLDC-1.0");
				//Proxy-Connection不是RFC标准，但是很多服务器都这么用了
				conn.setRequestProperty("Proxy-Connection", "Keep-Alive");
			}else{
				System.out.println("启用直连");
				conn = (HttpConnection) Connector.open("http://"+url);
				conn.setRequestMethod(HttpConnection.GET);
				conn.setRequestProperty("User-Agent", "Nokia6500s-1/2.0");
				conn.setRequestProperty("X-Up-Calling-Line-ID","13761083826");
			}
			// Connection是针对HTTP1.0的标准,HTTP1.1默认就是keep-alive的，并且该头不允许在1.1里面使用
			conn.setRequestProperty("Connection", "Keep-Alive");
			conn.setRequestProperty("Content-Type","text/xml;charset=UTF-8");
			if(sendDate!=null){
				//发送数据
				conn.setRequestProperty("Content-Length",String.valueOf(sendDate.length()));
				DataOutputStream dos = new DataOutputStream(conn.openOutputStream());
				dos.write(sendDate.getBytes("UTF-8"));
				dos.flush();   
				dos.close();
			}
	      //接收数据
			if(conn.getResponseCode()==HttpConnection.HTTP_OK){
				is=conn.openInputStream();
				/*
				int length = (int) conn.getLength();
				System.out.println("length="+length);
				byte[] data=null;
				DataInputStream dis=new DataInputStream(is);
				if (length == -1) {
					int chunkSize = 1500;
					byte[] buffer = new byte[chunkSize];
					ByteArrayOutputStream baos = new ByteArrayOutputStream();
					int dataSizeRead = 0;// size of data read from input stream.
					while ((dataSizeRead = is.read(buffer)) != -1) {
						baos.write(buffer, 0, dataSizeRead);
					}
					data = baos.toByteArray();
					baos.close();
				} else if (length == 0) {
				} else {// known length
					data = new byte[length];
					dis.readFully(data);
				}
				
				String text=null;
				try {
					text=new String(data, "UTF-8");
				} catch (UnsupportedEncodingException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				System.out.println("[收到数据]"+text);
				*/
				parseXml(is);
			}else{
				System.out.println("无法连接服务器，返回码："+conn.getResponseCode());
			}
			
		}catch (Exception e) {
			// TODO: handle exception
			System.out.println("重新尝试连接:"+(connTimes+1));
			if (connTimes < 2) {			connTimes++;
				isProxy=!isProxy;//
				send();
			} else {
				connTimes = 0;
				System.out.println("无法连接服务器");
//				Consts.isWaiting=false;
//				Consts.hasError=true;
			}
		}finally{
			try {
				if (is != null)
					is.close();
				if (conn != null)
					conn.close();
			} catch (Throwable t) {
				System.out.println("Exception occurred while closing input stream.");
			}
		}
		
	}
	private void parseXml(InputStream is){
		KXmlParser parser = new KXmlParser();
		try {
			parser.setInput(is,"UTF-8");
			int eventType=parser.getEventType();
			System.out.println("eventType="+eventType);
			if(eventType==KXmlParser.START_DOCUMENT){
				startDocument(parser);
			}
			boolean keepParsing = true;
			while(keepParsing){
				int type = parser.next();
                switch(type){
                case KXmlParser.START_DOCUMENT:
                	//startDocument(parser);//这里总是执行不到，可以去掉
                    break;   
                case KXmlParser.START_TAG:   
                    startElement(parser);   
                    break;   
                case KXmlParser.END_TAG:   
                    endElement(parser);   
                    break;   
                case KXmlParser.TEXT:   
                    characters(parser);   
                    break;   
                case KXmlParser.END_DOCUMENT:
                	endDocument(parser);
                	keepParsing = false;
                    break;   
                }   
			}
		} catch (XmlPullParserException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}   
		
	}
	public void startDocument(KXmlParser parser){
		
	}
	public void endDocument(KXmlParser parser){
		 
	}
	String tagName=null;
	public void startElement(KXmlParser parser){   
       this.tagName = parser.getName();
       System.out.println("key:" + this.tagName);
       int attributeCount= parser.getAttributeCount();
       String winTermNo=parser.getAttributeValue(null, "winTermNo");
       System.out.println("winTermNo="+winTermNo);
//       for(int i=0;i<attributeCount;i++){
//    	   System.out.println(parser.getAttributeName(i)+":"+parser.getAttributeValue(i));
//       }
    }   
       
    public void endElement(KXmlParser parser){
    	
    }   
       
    public void characters(KXmlParser parser){   
        String content = parser.getText();   
        System.out.println(tagName + ":" + content);   
        if (tagName.equals("lottery")){   
            System.out.println(content);   
        }   
        else if(tagName.equals("gameInfo")){   
            System.out.println(content);   
        }   
        this.tagName = null;   
    }   


	public void run() {
		// TODO Auto-generated method stub
		send();
	}
	
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Connection c=new Connection("127.0.0.1:8080/Lottery/kjava.portal?action=lotterySimpleInfo",null);
		Thread t=new Thread(c);
		t.start();
	}
	
}

当然，像上面的startXXX(),endXXX()需要自己实现，最好做成接口！
我访问上面的地址返回的xml为：

<message>
  <lottery winTermNo="10098" lotteryResult="0409152528|0405" termNo="10099" deadLine="20100825193000" /> 
  <lottery winTermNo="10228" lotteryResult="000" termNo="10229" deadLine="20100824193000" /> 
  <lottery winTermNo="10228" lotteryResult="00000" termNo="10229" deadLine="20100824193000" /> 
  <lottery winTermNo="10098" lotteryResult="2268381" termNo="10099" deadLine="20100824193000" /> 
  <lottery winTermNo="10073" lotteryResult="33333333333333" termNo="" deadLine="" /> 
  <gameInfo id="1" homeTeam="阿尔科孔" awayTeam="塞尔塔" gameDate="08-30 11:51" leagueMatch="国王杯" /> 
  <gameInfo id="2" homeTeam="皇家贝蒂斯" awayTeam="萨拉曼卡" gameDate="08-30 11:51" leagueMatch="国王杯" /> 
  <gameInfo id="3" homeTeam="弗鲁米嫩塞" awayTeam="帕尔梅拉斯" gameDate="08-30 11:51" leagueMatch="巴甲" /> 
  <gameInfo id="4" homeTeam="弗鲁米嫩塞" awayTeam="帕尔梅拉斯" gameDate="08-30 11:51" leagueMatch="巴甲" /> 
  <gameInfo id="5" homeTeam="弗鲁米嫩塞" awayTeam="帕尔梅拉斯" gameDate="08-30 11:51" leagueMatch="巴甲" /> 
  <gameInfo id="6" homeTeam="弗鲁米嫩塞" awayTeam="帕尔梅拉斯" gameDate="08-30 11:51" leagueMatch="巴甲" /> 
  <gameInfo id="7" homeTeam="弗鲁米嫩塞" awayTeam="帕尔梅拉斯" gameDate="08-30 11:51" leagueMatch="巴甲" /> 
  <gameInfo id="8" homeTeam="弗鲁米嫩塞" awayTeam="帕尔梅拉斯" gameDate="08-30 11:51" leagueMatch="巴甲" /> 
  <gameInfo id="9" homeTeam="弗鲁米嫩塞" awayTeam="帕尔梅拉斯" gameDate="08-30 11:51" leagueMatch="巴甲" /> 
  <gameInfo id="10" homeTeam="弗鲁米嫩塞" awayTeam="帕尔梅拉斯" gameDate="08-30 11:51" leagueMatch="巴甲" /> 
  <gameInfo id="11" homeTeam="弗鲁米嫩塞" awayTeam="帕尔梅拉斯" gameDate="08-30 11:51" leagueMatch="巴甲" /> 
  <gameInfo id="12" homeTeam="弗鲁米嫩塞" awayTeam="帕尔梅拉斯" gameDate="08-30 11:51" leagueMatch="巴甲" /> 
  <gameInfo id="13" homeTeam="弗鲁米嫩塞" awayTeam="帕尔梅拉斯" gameDate="08-30 11:51" leagueMatch="巴甲" /> 
  <gameInfo id="14" homeTeam="弗鲁米嫩塞" awayTeam="帕尔梅拉斯" gameDate="08-30 11:51" leagueMatch="巴甲" /> 
  </message>

最后，提供KXML源码：

评论

1 楼 coclely 2014-09-13  

谢谢你 ！！