java不解压tar.gz读取包里面的某个文件内容或读取远程zip包中的文件内容

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<dependency>             <groupId>org.apache.commons</groupId>             <artifactId>commons-compress</artifactId>             <version>1.18</version>         </dependency>

　　

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package com.example.demo.xml2map;   import java.io.*;   /**  * @Author: luojie  * @Date: 2020/5/13 8:19  */ public class FileUtil {       public static byte[] getContent(File file) {         try {             return getContent(new FileInputStream(file));         } catch (FileNotFoundException e) {             e.printStackTrace();         }         return new byte[]{};     }       public static byte[] getContent(InputStream is) {         ByteArrayOutputStream baos = new ByteArrayOutputStream();         try {             byte[] buffer = new byte[1024];             //byte[] buffer = new byte[16 * 1024];             while (true) {                 int len = is.read(buffer);                 if (len == -1) {                     break;                 }                 baos.write(buffer, 0, len);             }         } catch (Exception e) {             e.printStackTrace();         }         return baos.toByteArray();     }   }

　　

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package com.example.demo.xml2map;   import org.apache.commons.compress.archivers.ArchiveInputStream; import org.apache.commons.compress.archivers.ArchiveStreamFactory; import org.apache.commons.compress.archivers.tar.TarArchiveEntry; import org.apache.commons.lang3.StringUtils;   import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.util.zip.GZIPInputStream;   /**  * @Author: luojie  * @Date: 2020/5/13 8:21  */ public class TarGz2Test {       public static void readTarFile(File tarFile){         String orginFileName = tarFile.getName();         try {             ArchiveInputStream archiveInputStream = null;             if (StringUtils.endsWithIgnoreCase(tarFile.getName(), ".gz")) {                 archiveInputStream = new ArchiveStreamFactory()                         .createArchiveInputStream("tar", new GZIPInputStream(new BufferedInputStream(new FileInputStream(tarFile))));             } else {                 archiveInputStream = new ArchiveStreamFactory()                         .createArchiveInputStream("tar", new BufferedInputStream(new FileInputStream(tarFile)));             }             TarArchiveEntry entry = null;             while ((entry = (TarArchiveEntry) archiveInputStream.getNextEntry()) != null) {                   if (entry.getSize() > 0) {                       String fileName = orginFileName.substring(0, orginFileName.indexOf(".tar.gz")) + "-MSS1.xml";                     if(fileName.equalsIgnoreCase(entry.getName())){                         System.out.println("fileSize is " + entry.getSize());                         byte[] bytes = FileUtil.getContent(archiveInputStream);                         System.out.println(new String(bytes));                     }                   }             }           } catch (Exception e) {             e.printStackTrace();         }     }       public static void main(String[] args) {         readTarFile(new File("E:\\satellite\\GF1_PMS1_E109.2_N38.3_20170803_L1A0002525088.tar.gz")); //        System.out.println(JSON.toJSONString(data));     } }

　　读取远程zip包中的文件内容

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package com.example.demo.xml2map;   import com.alibaba.fastjson.JSON;   import java.io.BufferedInputStream; import java.net.HttpURLConnection; import java.net.URL; import java.nio.charset.Charset; import java.util.Map; import java.util.zip.ZipEntry; import java.util.zip.ZipInputStream;   import static com.example.demo.xml2map.TarGz2Test.xmlToMap;   /**  * @Author: luojie  * @Date: 2020/6/12 9:24  */ public class RemoteXmlTest {       public static void main(String[] args) throws Exception{         URL urlfile = new URL("http://192.168.190.153:80/group1/M00/00/00/wKi-mV7i2yGAMAf_AAABDdSbEN0882.zip");         HttpURLConnection conn = (HttpURLConnection) urlfile.openConnection();         BufferedInputStream bis = null;         Charset gbk = Charset.forName("utf-8");         bis = new BufferedInputStream(conn.getInputStream());         ZipInputStream zin = new ZipInputStream(bis, gbk);         ZipEntry ze;         while ((ze = zin.getNextEntry()) != null) {             if(ze.getName().equalsIgnoreCase("user.xml")){                 byte[] bytes = FileUtil.getContent(zin);                 Map<String, String> map = xmlToMap(bytes);                 System.out.println(JSON.toJSONString(map));             }         }     } }