下面是完整的代码。

复制代码 代码如下:

package cn.searchphoto.util;

import java.io.File;

import java.io.FileOutputStream;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.URL;

import java.net.URLConnection;

import java.util.zip.GZIPInputStream;

/**

* 下载远程网站的图片，通过设置Referer反反盗链。

*

* @author JAVA世纪网(java2000.net, laozizhu.com)

*/

public class ImageDownloader {

/**

* 下载文件到指定位置

* @param imgurl 下载连接

* @param f 目标文件

* @return 成功返回文件，失败返回null

*/

public static File download(String imgurl, File f) {

try {

URL url = new URL(imgurl);

URLConnection con = url.openConnection();

int index = imgurl.indexOf("/", 10);

con.setRequestProperty("Host", index == -1 ? imgurl.substring(7) : imgurl.substring(7, index));

con.setRequestProperty("Referer", imgurl);

InputStream is = con.getInputStream();

if (con.getContentEncoding() != null && con.getContentEncoding().equalsIgnoreCase("gzip")) {

is = new GZIPInputStream(con.getInputStream());

}

byte[] bs = new byte[1024];

int len = -1;

OutputStream os = new FileOutputStream(f);

try {

while ((len = is.read(bs)) != -1) {

os.write(bs, 0, len);

}

} finally {

try {

os.close();

} catch (Exception ex) {}

try {

is.close();

} catch (Exception ex) {}

}

return f;

} catch (Exception ex) {

ex.printStackTrace();

return null;

}

}

}