java解析XML获取城市代码

运行前先导入dom4j架包，由于我们公司用的代理服务器所以下面我设置了代理ip，不需要的可直接忽略

 

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package com.chengshidaima.tools;   import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.InetSocketAddress; import java.net.Proxy; import java.net.URL; import java.net.URLConnection; import java.util.List; import org.dom4j.Document; import org.dom4j.DocumentHelper; import org.dom4j.Element;     public class CityCode {      // private Logger log = Logger.getLogger(CityCode.class.getName());       public static void main(String[] args) {         try {             CityCode cc = new CityCode();             cc.getCityXml();             //System.out.println(doc.asXML());         } catch (Exception e) {             e.printStackTrace();         }     }       /**      * 解析      *      * @return      * @throws Exception      */     @SuppressWarnings("unchecked")     private Document getCityXml() throws Exception {         /** 新建一个doc 保存结果 */         Document docResult = DocumentHelper.createDocument();         Element addElementRoot = DocumentHelper.createElement("china");           String sUrlChina = "http://flash.weather.com.cn/wmaps/xml/china.xml";         String sChinaProvXml = getUrlString(sUrlChina);         Document doc = DocumentHelper.parseText(sChinaProvXml);           Element rootElt = doc.getRootElement(); // 获取根节点         //log.info("根节点：" + rootElt.getName()); // 拿到根节点的名称         /** 取得所有省份 */         List<Element> listProv = rootElt.elements("city"); // 获取根节点下的子节点         for (int i = 0; i < listProv.size(); i++) {             Element elementProv = listProv.get(i);             /** 省份名字 */             String sProvName = elementProv.attributeValue("pyName");             String sProvNameCN = elementProv.attributeValue("quName");             /** 添加节点 */             Element addElementProv = DocumentHelper.createElement("prov");             addElementProv.addAttribute("pyName", sProvName);             addElementProv.addAttribute("quName", sProvNameCN);               try {                 //log.info("查询省份:" + sProvNameCN + " 下的城市!");                 String sUrlProv = "http://flash.weather.com.cn/wmaps/xml/" + sProvName + ".xml";                 String sProvXml = getUrlString(sUrlProv);                 Document docProv = DocumentHelper.parseText(sProvXml);                   Element rootEltProv = docProv.getRootElement(); // 获取省份下的跟节点                 List<Element> listCity1 = rootEltProv.elements("city");                 for (int j = 0; j < listCity1.size(); j++) {                     Element elementCity1 = listCity1.get(j);                     String sCityName1 = elementCity1.attributeValue("pyName");                     String sCityUrl1 = elementCity1.attributeValue("url");                     String sCityNameCN1 = elementCity1.attributeValue("cityname");                     System.out.println(sCityNameCN1 + ":" + sCityUrl1);                       Element addElementMainCity = DocumentHelper.createElement("city");                     addElementMainCity.addAttribute("pyName", sCityName1);                     addElementMainCity.addAttribute("quName", sCityNameCN1);                     addElementMainCity.addAttribute("url", sCityUrl1);                       try {                         String sUrlCity1 = "http://flash.weather.com.cn/wmaps/xml/" + sCityName1 + ".xml";                         //log.info("查询主要城市:" + sCityNameCN1 + " 下的城市!");                         String sCityXml = getUrlString(sUrlCity1);                         Document docCity1 = DocumentHelper.parseText(sCityXml);                         Element rootCity1 = docCity1.getRootElement();                         List<Element> listCity2 = rootCity1.elements("city");                           for (int k = 0; k < listCity2.size(); k++) {                             Element elementCity2 = listCity2.get(k);                             String sCityName2 = elementCity2.attributeValue("pyName");                             String sCityNameCN2 = elementCity2.attributeValue("cityname");                             String sCityUrl2 = elementCity2.attributeValue("url");                             if (!sCityUrl1.endsWith(sCityUrl2)) {                                 System.out.println(sCityNameCN2 + ":" + sCityUrl2);                             }                             Element addElementCity2 = DocumentHelper.createElement("city2");                             addElementCity2.addAttribute("pyName", sCityName2);                             addElementCity2.addAttribute("quName", sCityNameCN2);                             addElementCity2.addAttribute("url", sCityUrl2);                             addElementMainCity.add(addElementCity2);                         }                       } catch (Exception e) {                        // log.info("查询主要城市:" + sCityNameCN1 + " 下的城市失败!");                     }                     addElementProv.add(addElementMainCity);                 }             } catch (Exception e) {                 //log.info("查询省份:" + sProvNameCN + "下的城市失败!");             }             addElementRoot.add(addElementProv);         }         docResult.setRootElement(addElementRoot);         return docResult;     }       /**      * 从url获取xml字符串      *      * @param sUrl      * @return      * @throws Exception      */     private String getUrlString(String sUrl) throws Exception {         String sResult = "";         StringBuffer sbResult = null;        // log.info("开始连接Url:" + sUrl);         sbResult = new StringBuffer();         URL url = new URL(sUrl);                   // 创建代理服务器                    InetSocketAddress addr = new InetSocketAddress("10.128.6.3",808);                    Proxy proxy = new Proxy(Proxy.Type.HTTP, addr); // http 代理                   URLConnection con = url.openConnection(proxy);         BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream(), "UTF-8"));         String sLine = null;         while ((sLine = br.readLine()) != null) {             sbResult.append(sLine);         }         sResult = sbResult.toString();         //log.info("获取到信息:" + sbResult.toString().substring(0, 500));         if (sResult.contains("html")) {             String sInt = "null";             Integer.parseInt(sInt);         }         return sResult;     } }

 

 

运行部分结果如下图：