...... destUrl="http://www.ebook.com/java/網(wǎng)絡(luò)編程001.zip"; url = new URL(destUrl); httpUrl = (HttpURLConnection) url.openConnection(); //連接指定的網(wǎng)絡(luò)資源 httpUrl.connect(); //獲取網(wǎng)絡(luò)輸入流 bis = new BufferedInputStream(httpUrl.getInputStream()); ...... |
//設(shè)置代理服務(wù)器 System.getProperties().put("proxySet", "true"); System.getProperties().put("proxyHost", "10.154.134.110"); System.getProperties().put("proxyPort", "8080"); |
...... fos = new FileOutputStream(fileName); if (this.DEBUG) System.out.println("正在獲取鏈接[" + destUrl + "]的內(nèi)容...\n將其保存為文件[" + fileName +"]"); //保存文件 while ( (size = bis.read(buf)) != -1) fos.write(buf, 0, size); ...... |
上面的示例代碼就將網(wǎng)絡(luò)資源的內(nèi)容保存到了本地指定的文件中。
5. 代碼清單 import java.io.*;import java.net.*;import java.util.*;/** * p>Title: 個(gè)人開發(fā)的API/p> * p>Description: 將指定的HTTP網(wǎng)絡(luò)資源在本地以文件形式存放/p> * p>Copyright: Copyright (c) 2004/p> * p>Company: NewSky/p> * @author MagicLiao * @version 1.0 */public class HttpGet { public final static boolean DEBUG = true;//調(diào)試用 private static int BUFFER_SIZE = 8096;//緩沖區(qū)大小 private Vector vDownLoad = new Vector();//URL列表 private Vector vFileList = new Vector();//下載后的保存文件名列表 /** * 構(gòu)造方法 */ public HttpGet() { } /** * 清除下載列表 */ public void resetList() { vDownLoad.clear(); vFileList.clear(); } /** * 增加下載列表項(xiàng) * * @param url String * @param filename String */ public void addItem(String url, String filename) { vDownLoad.add(url); vFileList.add(filename); } /** * 根據(jù)列表下載資源 */ public void downLoadByList() { String url = null; String filename = null; //按列表順序保存資源 for (int i = 0; i vDownLoad.size(); i++) { url = (String) vDownLoad.get(i); filename = (String) vFileList.get(i); try { saveToFile(url, filename); } catch (IOException err) { if (DEBUG) { System.out.println("資源[" + url + "]下載失敗!!!"); } } } if (DEBUG) { System.out.println("下載完成!!!"); } } /** * 將HTTP資源另存為文件 * * @param destUrl String * @param fileName String * @throws Exception */ public void saveToFile(String destUrl, String fileName) throws IOException { FileOutputStream fos = null; BufferedInputStream bis = null; HttpURLConnection httpUrl = null; URL url = null; byte[] buf = new byte[BUFFER_SIZE]; int size = 0; //建立鏈接 url = new URL(destUrl); httpUrl = (HttpURLConnection) url.openConnection(); //連接指定的資源 httpUrl.connect(); //獲取網(wǎng)絡(luò)輸入流 bis = new BufferedInputStream(httpUrl.getInputStream()); //建立文件 fos = new FileOutputStream(fileName); if (this.DEBUG) System.out.println("正在獲取鏈接[" + destUrl + "]的內(nèi)容...\n將其保存為文件[" + fileName + "]"); //保存文件 while ( (size = bis.read(buf)) != -1) fos.write(buf, 0, size); fos.close(); bis.close(); httpUrl.disconnect(); } /** * 設(shè)置代理服務(wù)器 * * @param proxy String * @param proxyPort String */ public void setProxyServer(String proxy, String proxyPort) { //設(shè)置代理服務(wù)器 System.getProperties().put("proxySet", "true"); System.getProperties().put("proxyHost", proxy); System.getProperties().put("proxyPort", proxyPort); } /** * 設(shè)置認(rèn)證用戶名與密碼 * * @param uid String * @param pwd String */ public void setAuthenticator(String uid, String pwd) { Authenticator.setDefault(new MyAuthenticator(uid, pwd)); } /** * 主方法(用于測(cè)試) * * @param argv String[] */ public static void main(String argv[]) { HttpGet oInstance = new HttpGet();try {//增加下載列表(此處用戶可以寫入自己代碼來(lái)增加下載列表)oInstance.addItem("http://www.ebook.com/java/網(wǎng)絡(luò)編程001.zip","./網(wǎng)絡(luò)編程1.zip");oInstance.addItem("http://www.ebook.com/java/網(wǎng)絡(luò)編程002.zip","./網(wǎng)絡(luò)編程2.zip");oInstance.addItem("http://www.ebook.com/java/網(wǎng)絡(luò)編程003.zip","./網(wǎng)絡(luò)編程3.zip");oInstance.addItem("http://www.ebook.com/java/網(wǎng)絡(luò)編程004.zip","./網(wǎng)絡(luò)編程4.zip");oInstance.addItem("http://www.ebook.com/java/網(wǎng)絡(luò)編程005.zip","./網(wǎng)絡(luò)編程5.zip");oInstance.addItem("http://www.ebook.com/java/網(wǎng)絡(luò)編程006.zip","./網(wǎng)絡(luò)編程6.zip");oInstance.addItem("http://www.ebook.com/java/網(wǎng)絡(luò)編程007.zip","./網(wǎng)絡(luò)編程7.zip");//開始下載oInstance.downLoadByList(); } catch (Exception err) { System.out.println(err.getMessage()); } }}
下載源代碼
標(biāo)簽:鄭州 馬鞍山 武威 紅河 大興安嶺 亳州 拉薩 岳陽(yáng)
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