我有一个在.NET中被gzip压缩的Base64字符串,我想将它转换回Java中的字符串.我正在寻找C#语法的一些Java等价物,特别是:
> Convert.FromBase64String
> MemoryStream
> GZipStream
这是我要转换的方法:
public static string Decompress(string zipText) {
byte[] gzipBuff = Convert.FromBase64String(zipText);
using (MemoryStream memstream = new MemoryStream())
{
int msgLength = BitConverter.ToInt32(gzipBuff, 0);
memstream.Write(gzipBuff, 4, gzipBuff.Length - 4);
byte[] buffer = new byte[msgLength];
memstream.Position = 0;
using (GZipStream gzip = new GZipStream(memstream, CompressionMode.Decompress))
{
gzip.Read(buffer, 0, buffer.Length);
}
return Encoding.UTF8.GetString(buffer);
}
}
任何指针都表示赞赏.
解决方法:
对于Base64,您拥有Apache Commons的Base64 class和带有String并返回byte []的decodeBase64方法.
然后,您可以将生成的byte []读入ByteArrayInputStream
.最后,将ByteArrayInputStream传递给GZipInputStream并读取未压缩的字节.
代码看起来像这样的东西:
public static String Decompress(String zipText) throws IOException {
byte[] gzipBuff = Base64.decodeBase64(zipText);
ByteArrayInputStream memstream = new ByteArrayInputStream(gzipBuff);
GZIPInputStream gzin = new GZIPInputStream(memstream);
final int buffSize = 8192;
byte[] tempBuffer = new byte[buffSize ];
ByteArrayOutputStream baos = new ByteArrayOutputStream();
while ((size = gzin.read(tempBuffer, 0, buffSize)) != -1) {
baos.write(tempBuffer, 0, size);
}
byte[] buffer = baos.toByteArray();
baos.close();
return new String(buffer, "UTF-8");
}
我没有测试代码,但我认为它应该可以工作,也许只需要一些修改.