如何用java读取php的gzencode函数输出的压缩字符

struggles 2014-12-03 07:32:15

输入的字符串为php的gzencode压缩的字符串，可以用gzdecode解开，但是用java的java.util.zip.GZIPInputStream读入字符串时，总是提示：
java.util.zip.ZipException: Not in GZIP format
希望有经验的朋友帮我解答一下，我的代码如下：



import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.InputStream;

import java.io.OutputStream;

import java.util.zip.GZIPInputStream;

import java.util.zip.GZIPOutputStream;

public class Gzdecode {

	public static void decompress(InputStream is, OutputStream os)

			throws Exception {

		GZIPInputStream gis = new GZIPInputStream(is);

		int count;

		byte data[] = new byte[BUFFER];

		while ((count = gis.read(data, 0, BUFFER)) != -1) {

			os.write(data, 0, count);

		}

		gis.close();

	}

	public static byte[] decompress(byte[] data) throws Exception {  

        ByteArrayInputStream bais = new ByteArrayInputStream(data);  

        ByteArrayOutputStream baos = new ByteArrayOutputStream();   

        // 解压缩   

        decompress(bais, baos);   

        data = baos.toByteArray();  

        baos.flush();  

        baos.close();   

        bais.close();   

        return data;  

    }

		public static void main(String[] args) throws Exception

	{

		String input="";

		byte[] data=input.getBytes("UTF-8");

		byte[] data_decompress=decompress(data);

		System.out.write(data_decompress);