java 通过新浪接口实现天气预报

package com.lwz.wx.util;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import net.sf.json.JSONObject;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.methods.PostMethod;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

public class Gettqbycs {

public String palceRequestUrl(String city) throws UnsupportedEncodingException {
//String url="http://xml.weather.yahoo.com/forecastrss?u=c&p=CHXX"+city;
String url="http://php.weather.sina.com.cn/xml.php?city="+city+"&password=DJOYnieT8234jlsK&day=0"; //这里的0 表示今天 要查明天换成 1
return url;
}

public String Gettqbycs(String csname) throws UnsupportedEncodingException{
String url = palceRequestUrl(csname);
System.out.println(url);
String returnStr="";
HttpClient client = new HttpClient();
PostMethod getMethod = new PostMethod(url);
try {
client.executeMethod(getMethod);
returnStr=new String(getMethod.getResponseBodyAsString().getBytes("iso-8859-1"),"UTF-8");//链接返回来的信息
} catch (HttpException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
//JSONObject jsonObj = JSONObject.fromObject(returnStr );
String s=returnStr;
// System.out.println(s);
return s;
}

public String readStringXml(String xml) {
StringBuffer buff=new StringBuffer();
Document doc = null;
try {
// 读取并解析XML文档
// SAXReader就是一个管道，用一个流的方式，把xml文件读出来
// SAXReader reader = new SAXReader(); //User.hbm.xml表示你要解析的xml文档
// Document document = reader.read(new File("User.hbm.xml"));
// 下面的是通过解析xml字符串的
doc = DocumentHelper.parseText(xml); // 将字符串转为XML
Element rootElt = doc.getRootElement(); // 获取根节点
System.out.println("根节点：" + rootElt.getName()); // 拿到根节点的名称
Iterator iter = rootElt.elementIterator("Weather"); // 获取根节点下的子节点Weather

while (iter.hasNext()) {// 遍历head节点
Element recordEle = (Element) iter.next();
String city = recordEle.elementTextTrim("city"); // 拿到Weather节点下的子节点title值
buff.append("您好,我是小V，以下是今天的天气情况！").append("\n\n");
buff.append("城市："+city).append("\n");
String status1=recordEle.elementTextTrim("status1");
String status2=recordEle.elementTextTrim("status2");
buff.append("天气情况："+status1+"转"+status2).append("\n");
String temperature1=recordEle.elementTextTrim("temperature1");
String temperature2=recordEle.elementTextTrim("temperature2");
buff.append("温度："+temperature1+"~~"+temperature2+"摄氏度").append("\n");
String chy_shuoming=recordEle.elementTextTrim("chy_shuoming");
buff.append("建议穿衣："+chy_shuoming).append("\n");
String gm_s=recordEle.elementTextTrim("gm_s");
buff.append("需要注意："+gm_s).append("\n");
buff.append("很高兴为您服务").append("\n");
buff.append("回复 ？ 显示需要的帮助。").append("\n\n");;
}
} catch (DocumentException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
return  buff.toString();
}

public static void main(String[] args) {
Gettqbycs test=new Gettqbycs();
try {
String instr="福州天气"; //这个是个人其他项目测试，可以自己处理下
System.out.println(instr.substring(2, 4));
String city=instr.substring(0, 2);
String ss= test.Gettqbycs(URLEncoder.encode(city, "GBK"));
String buffstr=test.readStringXml(ss);
System.out.println(buffstr);
} catch (Exception e) {
e.printStackTrace();
}
}

}