java 下载http格式的文件
/** * 采用post方式向服务器发起申请 * * @param serviceURL * @param params * @return * @throws Exception */public boolean doPost(String serviceURL) throws Exception {HttpURLConnection conn = null;InputStream inStream = null;boolean rst = false;URL url = new URL(serviceURL);conn = (HttpURLConnection) url.openConnection();conn.setDoInput(true);inStream = conn.getInputStream();BufferedInputStream in = new BufferedInputStream(inStream);File file = new File("e:\\lmz.mp3");if (file != null) {file.createNewFile();}// 指定要写入文件的缓冲输出字节流BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(file));byte[] bb = new byte[1024];// 用来存储每次读取到的字节数组int n;// 每次读取到的字节数组的长度while ((n = in.read(bb)) != -1) {out.write(bb, 0, n);// 写入到输出流}out.close();// 关闭流in.close();System.out.println("拷贝成功");inStream.close();inStream = null;conn.disconnect();return rst;}
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以上是例子，只要传入一个URL就行了，比如：
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http://localhost:8080/a/qqmusic.wav,经过上述操作，会在e盘根目录下生成一个lmz.mp3.
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流来读写文件
?refurl:http://blog.csdn.net/a107494639/article/details/7586689
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