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WebService 客戶端代碼

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)

{

//構造HttpClient的實例

HttpClient httpClient = new HttpClient();

//創建GET方法的實例

GetMethod getMethod = new GetMethod("http://www.baidu.com");

//GetMethod getMethod = new GetMethod("http://10.164.80.52/dav/5000/moban.rar");

//使用系統提供的默認的恢復策略

getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,new DefaultHttpMethodRetryHandler());

try

{

//執行getMethod

int statusCode = httpClient.executeMethod(getMethod);

if (statusCode != HttpStatus.SC_OK)

{

System.err.println("Method failed: " + getMethod.getStatusLine());

}

//讀取內容

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();

//處理內容

//System.out.println(new String(responseBody));

System.out.println("OK!");

}

catch (HttpException e)

{

//發生致命的異常，可能是協議不對或者返回的內容有問題

System.out.println("Please check your provided http address!");

e.printStackTrace();

}

catch (IOException e)

{

//發生網絡異常

e.printStackTrace();

}

finally

{

//釋放連接

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;

}

獲得XML代碼:
需要的包:
jdom.jar
commons-logging-1.1.1.jar
commons-discover-0.2.jar
需要引入的類:
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);

// 下面代碼根據節點名稱獲得xml文件節點內的信息并輸出。

out.println("<a href="+student.getChild("LinkUrl").getText()+">"+student.getChild("TITLE").getText()+"</a>");

out.println("地址為:"+student.getChild("LinkUrl").getText());

} /***/

}catch(Exception ex)

{

ex.printStackTrace();

}

posted on 2010-10-21 09:00 半導體閱讀(959) 評論(0) 編輯收藏所屬分類: 通訊

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