java获取中国城市代码 中国城市ID

package org.com.Weather.weather;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;

/**
 * 中央气象台的天气预报API 
 * */
public class Wweather {
	
		/**
		 * 获取所有中国 省份及一级城市
		 * */
		public String weather() {
				// TODO Auto-generated method stub
				String ws_url = "http://m.weather.com.cn/data5/city.xml";
				String str= "";
				try {
					URL url = new URL(ws_url);
					BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream(),"utf-8"));//解决乱码问题
					StringBuffer sb = new StringBuffer();
					String s = "";
					while ((s = br.readLine()) != null) {
						sb.append(s + "\r\n"); //将内容读取到StringBuffer中
					}
					br.close();
					//System.out.println(sb.toString()); 屏幕
					str = new String(sb.toString().getBytes());
				} catch (MalformedURLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				return str;
		}
		
		/**
		 * 根据传入参数获取二级城市
		 * */
		public String secondCity(String id){
			String ws_url = "http://m.weather.com.cn/data5/city"+id+".xml";
			String str= "";
			try {
				URL url = new URL(ws_url);
				BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream(),"utf-8"));//解决乱码问题
				StringBuffer sb = new StringBuffer();
				String s = "";
				while ((s = br.readLine()) != null) {
					sb.append(s + "\r\n"); //将内容读取到StringBuffer中
				}
				br.close();
				//System.out.println(sb.toString()); 屏幕
				str = new String(sb.toString().getBytes());
			} catch (MalformedURLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			return str;
		}
		/**
		 * 根据传入参数得到城市天气预报信息ID, 其实也可以直接调用上面方法，为理解方便，故多加一个
		 * */
		public String weatherCityId(String id){
			String ws_url = "http://m.weather.com.cn/data5/city"+id+".xml";
			String str= "";
			try {
				URL url = new URL(ws_url);
				BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream(),"utf-8"));//解决乱码问题
				StringBuffer sb = new StringBuffer();
				String s = "";
				while ((s = br.readLine()) != null) {
					sb.append(s + "\r\n"); //将内容读取到StringBuffer中
				}
				br.close();
				//System.out.println(sb.toString()); 屏幕
				str = new String(sb.toString().getBytes());
			} catch (MalformedURLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			return str;
		}
	public static void main(String[] args) {
		Wweather w=new Wweather();
		String[] strArray=w.weather().split(",");
		for(int i=0;i<strArray.length;i++){
			String[] strArr=strArray[i].split("\\|");
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			String[] strArray2=w.secondCity(strArr[0]).split(",");
			for(int j=0;j<strArray2.length;j++){
				String[] strArray3=w.weatherCityId(strArray2[j].split("\\|")[0]).split(",");
				for(int m=0;m<strArray3.length;m++){
					System.out.println(strArray3[m].split("\\|")[1]+"  "+w.weatherCityId(strArray3[m].split("\\|")[0]).split("\\|")[1]);
				}
			}
			
		}
	}
}

因需要中国所有城市ID,所以写此程序获取