GzipOutputStream及GzipInputStream的用法

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GzipOutputStream及GzipInputStream的用法

博客分类：
• java base

Java

ByteArrayOutputStream arrayOutputStream ＝new ByteArrayOutputStream();
GZIPOutputStream gop = new GZIPOutputStream(arrayOutputStream);
byte[] buffer = new byte[1024];
int len = 0;
while ((len = inputStream.read(buffer)) != -1) {
    gop.write(buffer, 0, len);
}
gop.finish(); //这个在写入arrayOutputStream时一定要有，否则不能完全写入
gop.close;

ByteArrayOutputStream arrayOutputStream ＝new ByteArrayOutputStream();
GZIPOutputStream gop = new GZIPOutputStream(arrayOutputStream);
byte[] buffer = new byte[1024];
int len = 0;
while ((len = inputStream.read(buffer)) != -1) {
	gop.write(buffer, 0, len);
}
gop.finish(); //这个在写入arrayOutputStream时一定要有，否则不能完全写入
gop.close;

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Header encoding = method.getResponseHeader("Content-Encoding");
        if (encoding != null) {
            if (encoding.getValue().equals("gzip")) {
                bytes = GZipUtil.unzip(bytes);
            }
        }


public static byte[] unzip(InputStream in) throws IOException {
        // Open the compressed stream
        GZIPInputStream gin = new GZIPInputStream(in);

        ByteArrayOutputStream out = new ByteArrayOutputStream();

        // Transfer bytes from the compressed stream to the output stream
        byte[] buf = new byte[size];
        int len;
        while ((len = gin.read(buf)) > 0) {
            out.write(buf, 0, len);
        }

        // Close the file and stream
        gin.close();
        out.close();
        return out.toByteArray();
    }