Java调用webService示例

package com;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.methods.InputStreamRequestEntity;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.RequestEntity;
/**
 * 判断qq是否在线
 * 输入参数：QQ号码 String，默认QQ号码：8698053。
 * 返回数据：String，Y = 在线；N = 离线；E = QQ号码错误；A = 商业用户验证失败；V = 免费用户超过数量
 * @author Spenser
 *
 */
public class CheckqqOnline {
    /**
     * 
     * @param code    qq号码
     * @return        状态
     */
    public static String infoShow(String code){
        //soap的请求数据,可以借助soapUI工具生成
        String soapRequestData="<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" " +
            "xmlns:web=\"http://WebXml.com.cn/\"><soapenv:Header/><soapenv:Body><web:qqCheckOnline><web:qqCode>"
            +code+"</web:qqCode></web:qqCheckOnline></soapenv:Body></soapenv:Envelope>";
        //定义一个PostMethod,需要制定webService服务的URL
        PostMethod postMethod=new PostMethod("http://www.webxml.com.cn/webservices/qqOnlineWebService.asmx");
        //当请求数据中包含头文件的时候加上下行
//        postMethod.addRequestHeader("SOAPAction","");
        //将请求数据已字节的形式加入到PostMethod中
        byte[] b=null;
        try {
            b = soapRequestData.getBytes("utf-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        InputStream is = new ByteArrayInputStream(b,0,b.length);
        RequestEntity re = new InputStreamRequestEntity(is,b.length,"text/xml; charset=utf-8");
        postMethod.setRequestEntity(re);
        //最后生成一个HttpClient对象，并发出postMethod请求
        HttpClient httpClient = new HttpClient();
        try {
            int statusCode = httpClient.executeMethod(postMethod);
            System.out.println(statusCode);
        } catch (HttpException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        try {
            soapRequestData =  postMethod.getResponseBodyAsString();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return soapRequestData;
    }
    public static void main(String[] args) {
        String re=infoShow("");
        String str=re.substring(re.indexOf("<qqCheckOnlineResult>")+21, re.indexOf("</qqCheckOnlineResult>"));
        System.out.println("webservice返回的数据: "+re);
        System.out.println("解析过后的数据: "+str);
        
    }
}

在这边补充一下需要导入的jar包,commons-httpclient-3.1.jar,commons-codec-1.3.jar,commons-logging.jar,本人开始就导入第一个jar包,总是报错,然后发现第一个jar包里的类用到了后面2个jar包!