文件压缩成.gz文件

最新推荐文章于 2024-11-06 20:54:40 发布

原创最新推荐文章于 2024-11-06 20:54:40 发布 · 478 阅读

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这段代码展示了如何使用Java的GZIPOutputStream将文件压缩为.gz格式。通过FileInputStream读取源文件，然后用GZIPOutputStream写入到新的.gz文件中，完成文件压缩。异常处理确保了文件操作的正确关闭。

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import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.GZIPOutputStream;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class GZIPUtil {

   private static final Logger log = LoggerFactory.getLogger(GZIPUtil.class);

public static void compressFile(String inFileName) {
String outFileName = inFileName + ".gz";
FileInputStream in = null;
GZIPOutputStream out = null;
try {
in = new FileInputStream(new File(inFileName));
out = new GZIPOutputStream(new FileOutputStream(outFileName));
byte[] buf = new byte[10240];
int len = 0;
while (((in.available()>10240)&& (in.read(buf)) > 0)) {
   out.write(buf);
}
len = in.available();
in.read(buf, 0, len);
out.write(buf, 0, len);
log.info("GZIPUtil : Completing the GZIP file..."+outFileName);
} catch (FileNotFoundException e) {
   log.error("GZIPUtil : Could not find the inFile..."+inFileName);
} catch (IOException e) {
   log.error("GZIPUtil : Could not find the outFile..."+outFileName);
       } finally {
           try {
               if(in != null) {
                   in.close();
               }
               if(out != null) {
                   out.flush();
               }
               if(out != null) {
                   out.close();
               }
           } catch (IOException e) {
               log.info("GZIPUtil : 资源关闭异常："+e.getMessage());
           }
       }
}

public static void main(String[] args) {
String str = "C:/logs/eureka/info.log";
System.out.println(str);
compressFile(str);
}