Java下载HTTP URL链接示例

这里以下载迅雷U享版为例。

示例代码：

package com.zifeiy.snowflake.handle.filesget;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.MalformedURLException;

import java.net.URL;

import java.net.URLConnection;

public class HttpFileGetter {

	public boolean download(String urlString, File localFile) {

		try {

			URL url = new URL(urlString);

			URLConnection connection = url.openConnection();

			connection.setConnectTimeout(5*1000);

			InputStream inputStream = connection.getInputStream();

			byte[] byteArr = new byte[1024];

			int len;

			File dir = localFile.getParentFile();

			if (dir.exists() == false)

				dir.mkdirs();

			OutputStream outputStream = new FileOutputStream(localFile);

			while ((len = inputStream.read(byteArr)) != -1) {

				outputStream.write(byteArr, 0, len);

			}

			outputStream.close();

			inputStream.close();

		} catch (IOException e) {

			e.printStackTrace();

			return false;

		}

		return true;

	}

	// main for test

	public static void main(String[] args) {

		HttpFileGetter httpFileGetter = new HttpFileGetter();

		httpFileGetter.download("http://down.sandai.net/ThunderVIP/ThunderVIP-xlgw.exe", new File("D:\\test_download.exe"));

	}

}

下载下来的程序运行也没有问题：

巴特西

Java下载HTTP URL链接示例

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