我需要压缩和解压字符串
这是代码:
public static byte[] ZipStr(String str)
{
using (MemoryStream output = new MemoryStream())
using (DeflateStream gzip = new DeflateStream(output, CompressionMode.Compress))
using (StreamWriter writer = new StreamWriter(gzip))
{
writer.Write(str);
return output.ToArray();
}
}
和
public static string UnZipStr(byte[] input)
{
using (MemoryStream inputStream = new MemoryStream(input))
using (DeflateStream gzip = new DeflateStream(inputStream, CompressionMode.Decompress))
using (StreamReader reader = new StreamReader(gzip))
{
reader.ReadToEnd();
return System.Text.Encoding.UTF8.GetString(inputStream.ToArray());
}
}
UnZipStr 方法似乎有错误。有人可以帮助我吗?
有两个独立的问题。首先,在
ZipStr
中,您需要冲洗或关闭StreamWriter
并在从DeflateStream
读取之前关闭MemoryStream
。
其次,在
UnZipStr
中,您将根据 inputStream
中的压缩字节构造结果字符串。您应该返回 reader.ReadToEnd()
的结果。
在
StreamWriter
和 StreamReader
构造函数中指定字符串编码也是一个好主意。
请尝试以下代码:
public static byte[] ZipStr(string str)
{
using (MemoryStream output = new MemoryStream())
{
using (DeflateStream gzip = new DeflateStream(output, CompressionMode.Compress))
{
using (StreamWriter writer = new StreamWriter(gzip, System.Text.Encoding.UTF8))
{
writer.Write(str);
}
}
return output.ToArray();
}
}
public static string UnZipStr(byte[] input)
{
using (MemoryStream inputStream = new MemoryStream(input))
{
using (DeflateStream gzip = new DeflateStream(inputStream, CompressionMode.Decompress))
{
using (StreamReader reader = new StreamReader(gzip, System.Text.Encoding.UTF8))
{
return reader.ReadToEnd();
}
}
}
}