用GZIP压缩文件和解压文件

最新推荐文章于 2024-09-19 23:11:05 发布

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本文提供了一个使用Java实现GZIP文件压缩与解压缩的示例代码。该示例展示了如何读取一个文件并将其压缩为GZIP格式，然后如何将压缩后的文件解压回原始格式。

package io;

//: io/GZIPcompress.java
// {Args: GZIPcompress.java}
import java.util.zip.*;
import java.io.*;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

public class GZIPcompress {
	public static void main(String[] args) throws IOException {
		
		BufferedReader in = new BufferedReader(new FileReader("test.dat"));
		
		BufferedOutputStream out = new BufferedOutputStream(new GZIPOutputStream(new FileOutputStream("test.dat.gz")));
		
		int c;
		while((c = in.read()) != -1 ){
			out.write(c);
		}
		out.close();
		
		in.close();
		
		BufferedReader in2 = new BufferedReader(new InputStreamReader(new GZIPInputStream(new FileInputStream("test.dat.gz"))));
		BufferedWriter out2 = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("test.txt")));
		ByteBuffer bbf = ByteBuffer.allocate(1024);
		String str;
		while((str = in2.readLine()) != null){
			out2.write(str);
		}
		out2.close();
		in2.close();
		
		
		
	}
} /* (Execute to see output) */// :~