Android 之 中国天气网 JSON接口的城市编码解析及结果

http://blog.csdn.net/gebitan505/article/details/16860289

中国天气网提供有两种数据格式的接口：

一、XML接口

http://flash.weather.com.cn/wmaps/xml/china.xml

http://flash.weather.com.cn/wmaps/xml/changsha.xml

二、JSON接口

http://m.weather.com.cn/data/101250101.html

这个接口返回的是JSON数据，数据格式很好，缺点就是城市编码的问题了。

城市编码参考：http://vyphn.iteye.com/blog/850431

package com.tangqiang.tools;  
  
import java.io.BufferedReader;  
import java.io.InputStreamReader;  
import java.net.URL;  
import java.net.URLConnection;  
import java.util.List;  
import java.util.logging.Logger;  
  
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();  
            Document doc = 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");  
                            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);  
        URLConnection con = url.openConnection();  
        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;  
    }  
}

常用接口：

1-http://www.bejson.com/go.php?u=http://www.bejson.com/webInterface.php

2-http://m.blog.csdn.net/blog/cql342624757/9017397

3-http://www.cnblogs.com/w2011/archive/2013/01/19/2867858.html