java_http_down.rar_down JAVA_java http

import java.io.*; import java.net.*; import java.util.*; public class test { public final static boolean DEBUG = true; private static int BUFFER_SIZE = 8096; private Vector vDownLoad = new Vector();//URL列表 private Vector vFileList = new Vector();//下载后的保存文件名列表 public test() {} public void resetList() { vDownLoad.clear(); vFileList.clear(); } public void addItem(String url, String filename) { vDownLoad.add(url); vFileList.add(filename); } public void downLoadByList() { String url = null; String filename = null; 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(err.toString()); System.out.println("资源[" + url + "]下载失败!!!"); } } } if (DEBUG) { System.out.println("下载完成!!!"); } } 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; httpUrl.setRequestMethod("GET"); url = new URL(destUrl); httpUrl = (HttpURLConnection) url.openConnection(); //连接指定的资源 httpUrl.connect(); //获取网络输入流 bis = new BufferedInputStream(httpUrl.getInputStream()); //建立文件 fos = new FileOutputStream(fileName); if (this.DEBUG) System.out.println("正在获取链接[" + destUrl + "]的内容...\n将其保存为文件[" + fileName + "]"); while ( (size = bis.read(buf)) != -1) fos.write(buf, 0, size); fos.close(); bis.close(); httpUrl.disconnect(); } /** * 设置代理服务器 * * @param proxy String * @param proxyPort String */ public void setProxyServer(String proxy, String proxyPort) { //设置代理服务器 System.getProperties().put("proxySet", "true"); System.getProperties().put("proxyHost", proxy); System.getProperties().put("proxyPort", proxyPort); } /** * 主方法(用于测试) * * @param argv String[] */ public static void main(String argv[]) { test oInstance = new test(); try { String name = URLEncoder.encode("投诉黑名单", "UTF-8"); name=name+"%2020060523.txt"; oInstance.addItem("http://sp.iuni.com.cn/download.jsp?file=投诉黑名单 20060523.txt","20051019.txt"); oInstance.downLoadByList(); } catch (Exception err) { System.out.println(err.getMessage()); } } }