使用Commons-compression读取Java中的tar.gz
发布时间:2020-12-15 03:16:18 所属栏目:Java 来源:网络整理
导读:好的,我想阅读tar.gz文件(或xy)的内容,但这是一回事. 我正在做的或多或少是这样的: TarArchiveInputStream tarInput = new TarArchiveInputStream(new GzipCompressorInputStream(new FileInputStream("c://temp//test.tar.gz")));TarArchiveEntry currentE
好的,我想阅读tar.gz文件(或xy)的内容,但这是一回事.
我正在做的或多或少是这样的: TarArchiveInputStream tarInput = new TarArchiveInputStream(new GzipCompressorInputStream(new FileInputStream("c://temp//test.tar.gz"))); TarArchiveEntry currentEntry = tarInput.getNextTarEntry(); BufferedReader br = null; StringBuilder sb = new StringBuilder(); while (currentEntry != null) { File f = currentEntry.getFile(); br = new BufferedReader(new FileReader(f)); System.out.println("For File = " + currentEntry.getName()); String line; while ((line = br.readLine()) != null) { System.out.println("line="+line); } } if (br!=null) { br.close(); } 但是当我调用TarArchiveEntry的getFile方法时,我得到null. 解决方法
您不能使用TarArchiveEntry的getFile.当你压缩tar文件中的文件时,那个getter仅用于相反的操作.
相反,您应该直接从TarArchiveInputStream中读取.它将负责返回“动态”解压缩它的“文件”的内容. 例如(未经测试的代码,YMMV): TarArchiveInputStream tarInput = new TarArchiveInputStream(new GzipCompressorInputStream(new FileInputStream("c://temp//test.tar.gz"))); TarArchiveEntry currentEntry = tarInput.getNextTarEntry(); BufferedReader br = null; StringBuilder sb = new StringBuilder(); while (currentEntry != null) { br = new BufferedReader(new InputStreamReader(tarInput)); // Read directly from tarInput System.out.println("For File = " + currentEntry.getName()); String line; while ((line = br.readLine()) != null) { System.out.println("line="+line); } currentEntry = tarInput.getNextTarEntry(); // You forgot to iterate to the next file } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |