java解析Response中XML

package org.main;
import java.io.BufferedWriter;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStreamWriter;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.zip.GZIPInputStream;
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.impl.client.DefaultHttpClient;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
public class Demo {
     
    public static GZIPInputStream getReponse(String _url) throws ClientProtocolException, IOException    
    {    
       
        DefaultHttpClient httpclient = new DefaultHttpClient();    
        HttpGet httpget = new HttpGet(_url);    
        HttpResponse response = httpclient.execute(httpget);    
        HttpEntity entity = response.getEntity();       
            InputStream inputs=entity.getContent();      
            GZIPInputStream in = new GZIPInputStream(inputs);
        return in;    
    }    
     
     
 @SuppressWarnings("rawtypes")
public static void main(String[] args) throws Exception {
        
        Map map = new HashMap();
        SAXReader reader = new SAXReader();
        Document document = reader.read(getReponse("http://wthrcdn.etouch.cn/WeatherApi?city=%E9%95%BF%E6%98%A5"));
        // 得到xml根元素
        Element root = document.getRootElement();
        // 得到根元素的所有子节点
        List elementList = root.elements();
         
     
        Iterator forecast =  root.elementIterator("forecast");
          if (forecast.hasNext()) {
             Element recordEless = (Element) forecast.next();
             Iterator weather =  recordEless.elementIterator("weather");
                 Element weatherNode = (Element) weather.next();
                 System.out.println();
                 System.out.println("date" + ":" + weatherNode.elementTextTrim("date"));
                 System.out.println("high" + ":" + weatherNode.elementTextTrim("high"));
                 System.out.println("low" + ":" + weatherNode.elementTextTrim("low"));
                 Iterator weatherNodeChild =  weatherNode.elementIterator("day");
                 Element dayNode = (Element) weatherNodeChild.next();
                 System.out.println();
                 System.out.println("type" + ":" + dayNode.elementTextTrim("type"));
                 System.out.println("fengxiang" + ":" + dayNode.elementTextTrim("fengxiang"));
                 System.out.println("fengli" + ":" + dayNode.elementTextTrim("fengli"));
         }      
           
          Iterator zhishus =  root.elementIterator("zhishus");
           while(zhishus.hasNext()) {
                 Element zhishusNode = (Element) zhishus.next();
                 Iterator zhishu =  zhishusNode.elementIterator("zhishu");
                 while(zhishu.hasNext()) {
                      Element zhishuNode = (Element) zhishu.next();
                     System.out.println();
                     System.out.println("name" + ":" + zhishuNode.elementTextTrim("name"));
                     System.out.println("value" + ":" + zhishuNode.elementTextTrim("value"));
                     System.out.println("detail" + ":" + zhishuNode.elementTextTrim("detail"));
                 }        
             }      
                   
 }
}

最近给一个公众平台做一个天气查询的功能，原理就是从接口获取数据然后返回给用户。这里使用的接口返回的是xml类型的数据。于是使用dom4j解析。

    本来想着使用Document document = reader.read();

然后他的参数是一个input流，就想着如何把get请求到的resp转换为流，也上网查了一些相关资料，发现比较扯，，，自己搞吧... 先从

      HttpGet httpget = new HttpGet(_url);    
        HttpResponse response = httpclient.execute(httpget);    
        HttpEntity entity = response.getEntity();       
            InputStream inputs=entity.getContent();

这里得到resp的返回流，直接传给reader.read();方法，发现报错说是编码错误。。。一脸懵逼，因为直接通过浏览器访问就是utf-8编码啊，卧槽什么鬼。。。 

后来使用entity.getContentEncoding()   打印 发现是返回流是gzip编码......Ri...

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使用java自带的解压解一下压就好了....

GZIPInputStream in = new GZIPInputStream(inputs);

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