webService接口例子(转)

package com.suneee.scn.tms.rest.impl;

import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

/**
 * 类作用调用webservice得到天气预报服务
 * @author qsw-Myonlystar 2010-1-13上午09:59:45
 */
public class Weather {
    /**
     * 获取soap请求头，并替换其中的标志符号为用户的输入符号
     * @param city 用户输入城市名
     * @return 用户将要发送给服务器的soap请求
     */
    private static String getSoapRequest(String city) {
        StringBuilder sb = new StringBuilder();
        sb.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>"
                + "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" "
                + "xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" "
                + "xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">"
                + "<soap:Body>    <getWeatherbyCityName xmlns=\"http://WebXml.com.cn/\">"
                + "<theCityName>" + city
                + "</theCityName>    </getWeatherbyCityName>"
                + "</soap:Body></soap:Envelope>");
        return sb.toString();
    }
    /**
     * 用户把SOAP请求发送给服务器端，并返回服务器点返回的输入流
     * @param city 用户输入的城市名称
     * @return 服务器端返回的输入流，供客户端读取
     * @throws Exception
     */
    public static InputStream getSoapInputStream(String city) throws Exception {
        try {
            String soap = getSoapRequest(city);
            if (soap == null) {
                return null;
            }
            URL url = new URL(
                    "http://www.webxml.com.cn/WebServices/WeatherWebService.asmx");
            URLConnection conn = url.openConnection();
            conn.setUseCaches(false);
            conn.setDoInput(true);
            conn.setDoOutput(true);
            conn.setRequestProperty("Content-Length", Integer.toString(soap
                    .length()));
            conn.setRequestProperty("Content-Type", "text/xml; charset=utf-8");
            conn.setRequestProperty("SOAPAction",
                    "http://WebXml.com.cn/getWeatherbyCityName");
            OutputStream os = conn.getOutputStream();
            OutputStreamWriter osw = new OutputStreamWriter(os, "utf-8");
            osw.write(soap);
            osw.flush();
            osw.close();
            InputStream is = conn.getInputStream();
            //System.out.println(is.toString());
            return is;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    /**
     * 通过dom4j对服务器端返回的XML进行解析
     * @param city 用户输入的城市名称
     * @return 符串 用,分割
     */
    public static String getWeather(String city) {
        Document document=null;
        SAXReader reader = new SAXReader();
        String s="";
        Map map=new HashMap();
        map.put("design", "http://WebXml.com.cn/");
        reader.getDocumentFactory().setXPathNamespaceURIs(map);
        try {
            InputStream is = getSoapInputStream(city);//得到输入流
            document=reader.read(is);//将输入流转化为document
            String t =document.asXML();
            System.out.println(t);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }



/*        List nodes = document.selectNodes("//design:string");
        for (Iterator it = nodes.iterator(); it.hasNext();) {
            Element elm = (Element) it.next();
            String text=elm.getText();
            //System.out.println("fsffs"+text);
            s=s+elm.getText()+"\n";
        }*/
        return s;
    }
    /**
     * 测试函数
     * @param args
     */
    public static void main(String args[]){
        Weather w=new Weather();
        System.out.println(w.getWeather("北京"));
    }
}