方法一

**

* 下载远程文件并保存到本地

*

* @param remoteFilePath-远程文件路径

* @param localFilePath-本地文件路径(带文件名)

*/

public void downloadFile(String remoteFilePath, String localFilePath) {

URL urlfile = null;

HttpURLConnection httpUrl = null;

BufferedInputStream bis = null;

BufferedOutputStream bos = null;

File f = new File(localFilePath);

try {

urlfile = new URL(remoteFilePath);

httpUrl = (HttpURLConnection) urlfile.openConnection();

httpUrl.connect();

bis = new BufferedInputStream(httpUrl.getInputStream());

bos = new BufferedOutputStream(new FileOutputStream(f));

int len = 2048;

byte[] b = new byte[len];

while ((len = bis.read(b)) != -1) {

bos.write(b, 0, len);

}

bos.flush();

bis.close();

httpUrl.disconnect();

} catch (Exception e) {

e.printStackTrace();

} finally {

try {

bis.close();

bos.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

方法二

/**

* 下载远程文件并保存到本地

*

* @param remoteFilePath-远程文件路径

* @param localFilePath-本地文件路径(带文件名)

*/

public void downloadFile(String remoteFilePath, String localFilePath) {

URL website = null;

ReadableByteChannel rbc = null;

FileOutputStream fos = null;

try {

website = new URL(remoteFilePath);

rbc = Channels.newChannel(website.openStream());

fos = new FileOutputStream(localFilePath);//本地要存储的文件地址 例如：test.txt

fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);

} catch (Exception e) {

e.printStackTrace();

}finally{

if(fos!=null){

try {

fos.close();

} catch (IOException e) {

e.printStackTrace();

}

}

if(rbc!=null){

try {

rbc.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

}