package org.springblade.modules.equipage.controller;
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import java.io.*;
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import java.net.HttpURLConnection;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.net.URLConnection;
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public class DowloadZipUtil {
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//urlPath：目标文件路径, downloadDir:下载后要放的文件路径
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public static File downloadFile(String urlPath, String downloadDir) {
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File file = null;
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try {
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// 统一资源
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URL url = new URL(urlPath);
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// 连接类的父类，抽象类
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URLConnection urlConnection = url.openConnection();
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// http的连接类
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HttpURLConnection httpURLConnection = (HttpURLConnection) urlConnection;
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// 设定请求的方法，默认是GET
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httpURLConnection.setRequestMethod("GET");
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// 设置字符编码
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httpURLConnection.setRequestProperty("Charset", "UTF-8");
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// 打开到此 URL 引用的资源的通信链接（如果尚未建立这样的连接）。
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httpURLConnection.connect();
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// 文件大小
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int fileLength = httpURLConnection.getContentLength();
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// 文件名
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String filePathUrl = httpURLConnection.getURL().getFile();
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String[] strs=filePathUrl.split("/");
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String s = strs[4].toString();
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System.out.println(s);
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//File.separatorChar代表的是分隔符“/”或者“\”，若详知 自行百度
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String fileFullName = filePathUrl.substring(filePathUrl.lastIndexOf(File.separatorChar) + 1);
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System.out.println("file length---->" + fileLength);
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URLConnection con = url.openConnection();
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BufferedInputStream bin = new BufferedInputStream(httpURLConnection.getInputStream());
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String path = downloadDir + "/"+strs[4].toString();
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file = new File(path);
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if (!file.getParentFile().exists()) {
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file.getParentFile().mkdirs();
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}
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OutputStream out = new FileOutputStream(file);
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int size = 0;
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int len = 0;
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byte[] buf = new byte[1024];
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while ((size = bin.read(buf)) != -1) {
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len += size;
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out.write(buf, 0, size);
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// 打印下载百分比
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// System.out.println("下载了-------> " + len * 100 / fileLength +
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// "%\n");
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}
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bin.close();
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out.close();
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} catch (MalformedURLException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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} catch (IOException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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} finally {
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return file;
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}
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}
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}
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