WebService 客户端代码

WebService 客户端代码

JDK1.4 --http
需要的包:
1、 commons-httpclient-3.0.1.jar
2、 commons-logging-1.1.jar
3、 commons-codec-1.3.jar

程序:

GetSample.java

import  java.io. * ;
import  java.io.IOException;
import  org.apache.commons.httpclient. * ;
import  org.apache.commons.httpclient.methods.GetMethod;
import  org.apache.commons.httpclient.params.HttpMethodParams;
public   class  GetSample
{
   public static void main(String[] args)
   {
     //构造HttpClient的实例
     HttpClient httpClient = new HttpClient();
     //创建GET方法的实例
     GetMethod getMethod = new GetMethod("http://www.baidu.com");
     //GetMethod getMethod = new GetMethod("http://10.164.80.52/dav/5000/moban.rar");
     //使用系统提供的默认的恢复策略
     getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,new DefaultHttpMethodRetryHandler());
     try
     {
         //执行getMethod
         int statusCode = httpClient.executeMethod(getMethod);
         if (statusCode != HttpStatus.SC_OK)
         {
             System.err.println("Method failed: " + getMethod.getStatusLine());
         }
         //读取内容
         byte[] responseBody = getMethod.getResponseBody();
        
        
         String serverfile = "d:\\Test_baidu.html";
         //String serverfile = "d:\\moban.rar";
         OutputStream serverout = new FileOutputStream(serverfile);
        
         serverout.write(responseBody);   
         serverout.flush();   
         serverout.close();   

         //处理内容
         //System.out.println(new String(responseBody));
         System.out.println("OK!");
     }
     catch (HttpException e)
     {
         //发生致命的异常，可能是协议不对或者返回的内容有问题
         System.out.println("Please check your provided http address!");
         e.printStackTrace();
     }
     catch (IOException e)
     {
         //发生网络异常
         e.printStackTrace();
     }
     finally
     {
         //释放连接
         getMethod.releaseConnection();
     }
   }
}

JDK1.5及以上--http
需要的包:
httpclient-4.0.3.jar
httpmine-4.0.3.jar
httpcore-4.0.1.jar
httpcore-nio-4.0.1.jar
common-logging-1.0.4.jar

import  java.io.IOException;

import  org.apache.http.client.ClientProtocolException;
import  org.apache.http.client.HttpClient;
import  org.apache.http.client.ResponseHandler;
import  org.apache.http.client.methods.HttpGet;
import  org.apache.http.impl.client.BasicResponseHandler;
import  org.apache.http.impl.client.DefaultHttpClient;
import  org.apache.http.params.HttpProtocolParams;
public   class  HttpTask  {

    /** *//**
     * @param args
     */
        public static void main(String[] args) throws Exception{ 
        // TODO Auto-generated method stub   
                  HttpTask  ht = new HttpTask();
                  System.out.println(ht.getTasklist());
               }   /** *//**
             * @throws IOException */ 
    public String getTasklist()  throws ClientProtocolException,IOException{
        String url = "/web/gettask";       
        String host = "92.168.1.3";    
        String param = "usercode=3&password=123";   
        HttpClient httpclient = new DefaultHttpClient();     
        httpclient.getParams().setParameter(HttpProtocolParams.HTTP_CONTENT_CHARSET,"UTF-8");    
  
        HttpGet httpget = new HttpGet("http://"+host+url+"?"+param); 
        System.out.println("http://"+host+url+"?"+param);
  
        ResponseHandler responseHandler = new BasicResponseHandler();      
        String responseBody = (String)httpclient.execute(httpget, responseHandler);    
        //System.out.println(responseBody);  /***/   
        httpclient.getConnectionManager().shutdown();
          return responseBody;
    }

    }

获得XML代码:
需要的包:
jdom.jar
commons-logging-1.1.1.jar
commons-discover-0.2.jar
需要引入的类:
java.io.StringReader,org.jdom.Document,org.jdom.Element,org.jdom.JDOMException,org.jdom.input.SAXBuilder,java.net.Socket

         try {

            GetHttp  ht = new GetHttp();
            out.println(ht.getTaskList());
            

            SAXBuilder sb = new SAXBuilder(false);
            StringReader read = new StringReader(taskstr); 
            Document doc = sb.build(read);
    
            Element rootElt = doc.getRootElement();
            java.util.List Allstudents = rootElt.getChildren("Item"); // 得到根元素所有子元素的集合 
            Element student = null;
            
           for (int i = 0; i < Allstudents.size(); i++) {
                student = (Element) Allstudents.get(i);  
                //  下面代码根据节点名称获得xml文件节点内的信息并输出。 
                out.println("<a href="+student.getChild("LinkUrl").getText()+">"+student.getChild("TITLE").getText()+"</a>"); 
                out.println("地址为:"+student.getChild("LinkUrl").getText()); 
              } /** *//***/
          } catch (Exception ex) 
             {
                ex.printStackTrace();
            }