package org.springblade.modules.equipage.controller;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

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

	}
}