如何使用Java创建一个非常具体的zip文件结构

我正在开发软件以集成到遗留系统中,其中我将zip文件发送到FTP服务器,而传统系统会定期将文件转储到文件夹中,即“完成”或“可能被损坏”。

我的文件被系统地转储到“maybe_corrupted”文件夹中。经过调查,似乎是由于zip文件的结构造成的。

如果我将文件从FTP下载到Windows计算机上,我解压缩所有的zip文件(zip文件中有zip文件),并将文件解压缩到与程序接受文件完全相同的配置。

具体来说,我的问题是 – 我如何可以参数化java.util.zip,以及我应该修改哪些参数以使其更接近默认的Windows zip实用程序?

文件比较

根据Tobias Otto的建议,我使用了一个文件比较器(UltraCompare)来比较2个二进制文件:

>最初从FTP下载并由遗留系统拒绝的文件(左)
>被解压缩的被压缩文件被接受(右)

简单地比较字节,很明显文件是不一样的。注意,红色的字节是差异,灰色是相似的:

enter image description here

邮编细节

根据David Duponchel的建议,我使用zipdetails来提取每个文件的结构。显然,这是一个非常强大的工具,但我不知道如何解释输出,如使用指南中所述,输出参考this document

原始文件:

00000 LOCAL HEADER #1       04034B50
00004 Extract Zip Spec      14 '2.0'
00005 Extract OS            00 'MS-DOS'
00006 General Purpose Flag  0808
      [Bits 1-2]            0 'Normal Compression'
      [Bit  3]              1 'Streamed'
      [Bit 11]              1 'Language Encoding'
00008 Compression Method    0008 'Deflated'
0000A Last Mod Time         491E43F7 'Tue Aug 30 08:31:46 2016'
0000E CRC                   00000000
00012 Compressed Length     00000000
00016 Uncompressed Length   00000000
0001A Filename Length       0018
0001C Extra Length          0000
0001E Filename              'Mean.20160830_073000.zip'
00036 PAYLOAD

05002 STREAMING DATA HEADER 08074B50
05006 CRC                   A21A5BC4
0500A Compressed Length     00004FCC
0500E Uncompressed Length   000054D8

05012 LOCAL HEADER #2       04034B50
05016 Extract Zip Spec      14 '2.0'
05017 Extract OS            00 'MS-DOS'
05018 General Purpose Flag  0808
      [Bits 1-2]            0 'Normal Compression'
      [Bit  3]              1 'Streamed'
      [Bit 11]              1 'Language Encoding'
0501A Compression Method    0008 'Deflated'
0501C Last Mod Time         491E43F7 'Tue Aug 30 08:31:46 2016'
05020 CRC                   00000000
05024 Compressed Length     00000000
05028 Uncompressed Length   00000000
0502C Filename Length       0018
0502E Extra Length          0000
05030 Filename              'Mean.20160830_081500.zip'
05048 PAYLOAD

08FFF STREAMING DATA HEADER 08074B50
09003 CRC                   BAE824D6
09007 Compressed Length     00003FB7
0900B Uncompressed Length   000043A3

0900F LOCAL HEADER #3       04034B50
09013 Extract Zip Spec      14 '2.0'
09014 Extract OS            00 'MS-DOS'
09015 General Purpose Flag  0808
      [Bits 1-2]            0 'Normal Compression'
      [Bit  3]              1 'Streamed'
      [Bit 11]              1 'Language Encoding'
09017 Compression Method    0008 'Deflated'
09019 Last Mod Time         491E43F7 'Tue Aug 30 08:31:46 2016'
0901D CRC                   00000000
09021 Compressed Length     00000000
09025 Uncompressed Length   00000000
09029 Filename Length       0018
0902B Extra Length          0000
0902D Filename              'Mean.20160830_071500.zip'
09045 PAYLOAD

0E05E STREAMING DATA HEADER 08074B50
0E062 CRC                   EDC8AE4E
0E066 Compressed Length     00005019
0E06A Uncompressed Length   000054EA

0E06E LOCAL HEADER #4       04034B50
0E072 Extract Zip Spec      14 '2.0'
0E073 Extract OS            00 'MS-DOS'
0E074 General Purpose Flag  0808
      [Bits 1-2]            0 'Normal Compression'
      [Bit  3]              1 'Streamed'
      [Bit 11]              1 'Language Encoding'
0E076 Compression Method    0008 'Deflated'
0E078 Last Mod Time         491E43F7 'Tue Aug 30 08:31:46 2016'
0E07C CRC                   00000000
0E080 Compressed Length     00000000
0E084 Uncompressed Length   00000000
0E088 Filename Length       0018
0E08A Extra Length          0000
0E08C Filename              'Mean.20160830_

4.1.3 Data compression MAY be used to reduce the size of files placed into a ZIP file, but is not required. This format supports the use of multiple data compression algorithms. When compression is used, one of the documented compression algorithms MUST be used. Implementors are advised to experiment with their data to determine which of the available algorithms provides the best compression for their needs. Compression method 8 (Deflate) is the method used by default by most ZIP compatible application programs.

0.zip' 0E0A4 PAYLOAD 15444 STREAMING DATA HEADER 08074B50 15448 CRC C37437FB 1544C Compressed Length 000073A0 15450 Uncompressed Length 00008054 15454 LOCAL HEADER #5 04034B50 15458 Extract Zip Spec 14 '2.0' 15459 Extract OS 00 'MS-DOS' 1545A General Purpose Flag 0808 [Bits 1-2] 0 'Normal Compression' [Bit 3] 1 'Streamed' [Bit 11] 1 'Language Encoding' 1545C Compression Method 0008 'Deflated' 1545E Last Mod Time 491E43F7 'Tue Aug 30 08:31:46 2016' 15462 CRC 00000000 15466 Compressed Length 00000000 1546A Uncompressed Length 00000000 1546E Filename Length 0018 15470 Extra Length 0000 15472 Filename 'Mean.20160830_070000.zip' 1548A PAYLOAD 19E5D STREAMING DATA HEADER 08074B50 19E61 CRC 40E52180 19E65 Compressed Length 000049D3 19E69 Uncompressed Length 00005110 19E6D CENTRAL HEADER #1 02014B50 19E71 Created Zip Spec 14 '2.0' 19E72 Created OS 00 'MS-DOS' 19E73 Extract Zip Spec 14 '2.0' 19E74 Extract OS 00 'MS-DOS' 19E75 General Purpose Flag 0808 [Bits 1-2] 0 'Normal Compression' [Bit 3] 1 'Streamed' [Bit 11] 1 'Language Encoding' 19E77 Compression Method 0008 'Deflated' 19E79 Last Mod Time 491E43F7 'Tue Aug 30 08:31:46 2016' 19E7D CRC A21A5BC4 19E81 Compressed Length 00004FCC 19E85 Uncompressed Length 000054D8 19E89 Filename Length 0018 19E8B Extra Length 0000 19E8D Comment Length 0000 19E8F Disk Start 0000 19E91 Int File Attributes 0000 [Bit 0] 0 'Binary Data' 19E93 Ext File Attributes 00000000 19E97 Local Header Offset 00000000 19E9B Filename 'Mean.20160830_073000.zip' 19EB3 CENTRAL HEADER #2 02014B50 19EB7 Created Zip Spec 14 '2.0' 19EB8 Created OS 00 'MS-DOS' 19EB9 Extract Zip Spec 14 '2.0' 19EBA Extract OS 00 'MS-DOS' 19EBB General Purpose Flag 0808 [Bits 1-2] 0 'Normal Compression' [Bit 3] 1 'Streamed' [Bit 11] 1 'Language Encoding' 19EBD Compression Method 0008 'Deflated' 19EBF Last Mod Time 491E43F7 'Tue Aug 30 08:31:46 2016' 19EC3 CRC BAE824D6 19EC7 Compressed Length 00003FB7 19ECB Uncompressed Length 000043A3 19ECF Filename Length 0018 19ED1 Extra Length 0000 19ED3 Comment Length 0000 19ED5 Disk Start 0000 19ED7 Int File Attributes 0000 [Bit 0] 0 'Binary Data' 19ED9 Ext File Attributes 00000000 19EDD Local Header Offset 00005012 19EE1 Filename 'Mean.20160830_081500.zip' 19EF9 CENTRAL HEADER #3 02014B50 19EFD Created Zip Spec 14 '2.0' 19EFE Created OS 00 'MS-DOS' 19EFF Extract Zip Spec 14 '2.0' 19F00 Extract OS 00 'MS-DOS' 19F01 General Purpose Flag 0808 [Bits 1-2] 0 'Normal Compression' [Bit 3] 1 'Streamed' [Bit 11] 1 'Language Encoding' 19F03 Compression Method 0008 'Deflated' 19F05 Last Mod Time 491E43F7 'Tue Aug 30 08:31:46 2016' 19F09 CRC EDC8AE4E 19F0D Compressed Length 00005019 19F11 Uncompressed Length 000054EA 19F15 Filename Length 0018 19F17 Extra Length 0000 19F19 Comment Length 0000 19F1B Disk Start 0000 19F1D Int File Attributes 0000 [Bit 0] 0 'Binary Data' 19F1F Ext File Attributes 00000000 19F23 Local Header Offset 0000900F 19F27 Filename 'Mean.20160830_071500.zip' 19F3F CENTRAL HEADER #4 02014B50 19F43 Created Zip Spec 14 '2.0' 19F44 Created OS 00 'MS-DOS' 19F45 Extract Zip Spec 14 '2.0' 19F46 Extract OS 00 'MS-DOS' 19F47 General Purpose Flag 0808 [Bits 1-2] 0 'Normal Compression' [Bit 3] 1 'Streamed' [Bit 11] 1 'Language Encoding' 19F49 Compression Method 0008 'Deflated' 19F4B Last Mod Time 491E43F7 'Tue Aug 30 08:31:46 2016' 19F4F CRC C37437FB 19F53 Compressed Length 000073A0 19F57 Uncompressed Length 00008054 19F5B Filename Length 0018 19F5D Extra Length 0000 19F5F Comment Length 0000 19F61 Disk Start 0000 19F63 Int File Attributes 0000 [Bit 0] 0 'Binary Data' 19F65 Ext File Attributes 00000000 19F69 Local Header Offset 0000E06E 19F6D Filename 'Mean.20160830_

4.1.3 Data compression MAY be used to reduce the size of files placed into a ZIP file, but is not required. This format supports the use of multiple data compression algorithms. When compression is used, one of the documented compression algorithms MUST be used. Implementors are advised to experiment with their data to determine which of the available algorithms provides the best compression for their needs. Compression method 8 (Deflate) is the method used by default by most ZIP compatible application programs.

0.zip' 19F85 CENTRAL HEADER #5 02014B50 19F89 Created Zip Spec 14 '2.0' 19F8A Created OS 00 'MS-DOS' 19F8B Extract Zip Spec 14 '2.0' 19F8C Extract OS 00 'MS-DOS' 19F8D General Purpose Flag 0808 [Bits 1-2] 0 'Normal Compression' [Bit 3] 1 'Streamed' [Bit 11] 1 'Language Encoding' 19F8F Compression Method 0008 'Deflated' 19F91 Last Mod Time 491E43F7 'Tue Aug 30 08:31:46 2016' 19F95 CRC 40E52180 19F99 Compressed Length 000049D3 19F9D Uncompressed Length 00005110 19FA1 Filename Length 0018 19FA3 Extra Length 0000 19FA5 Comment Length 0000 19FA7 Disk Start 0000 19FA9 Int File Attributes 0000 [Bit 0] 0 'Binary Data' 19FAB Ext File Attributes 00000000 19FAF Local Header Offset 00015454 19FB3 Filename 'Mean.20160830_070000.zip' 19FCB END CENTRAL HEADER 06054B50 19FCF Number of this disk 0000 19FD1 Central Dir Disk no 0000 19FD3 Entries in this disk 0005 19FD5 Total Entries 0005 19FD7 Size of Central Dir 0000015E 19FDB Offset to Central Dir 00019E6D 19FDF Comment Length 0000 Done

解压缩的压缩文件:

00000 LOCAL HEADER #1       04034B50
00004 Extract Zip Spec      14 '2.0'
00005 Extract OS            00 'MS-DOS'
00006 General Purpose Flag  0000
00008 Compression Method    0000 'Stored'
0000A Last Mod Time         491E510F 'Tue Aug 30 10:08:30 2016'
0000E CRC                   218B9162
00012 Compressed Length     00005595
00016 Uncompressed Length   00005595
0001A Filename Length       0018
0001C Extra Length          0000
0001E Filename              'Mean.20160830_070000.zip'
00036 PAYLOAD

055CB LOCAL HEADER #2       04034B50
055CF Extract Zip Spec      14 '2.0'
055D0 Extract OS            00 'MS-DOS'
055D1 General Purpose Flag  0000
055D3 Compression Method    0000 'Stored'
055D5 Last Mod Time         491E5117 'Tue Aug 30 10:08:46 2016'
055D9 CRC                   180124FD
055DD Compressed Length     00005972
055E1 Uncompressed Length   00005972
055E5 Filename Length       0018
055E7 Extra Length          0000
055E9 Filename              'Mean.20160830_071500.zip'
05601 PAYLOAD

0AF73 LOCAL HEADER #3       04034B50
0AF77 Extract Zip Spec      14 '2.0'
0AF78 Extract OS            00 'MS-DOS'
0AF79 General Purpose Flag  0000
0AF7B Compression Method    0000 'Stored'
0AF7D Last Mod Time         491E511D 'Tue Aug 30 10:08:58 2016'
0AF81 CRC                   03A4486C
0AF85 Compressed Length     00005953
0AF89 Uncompressed Length   00005953
0AF8D Filename Length       0018
0AF8F Extra Length          0000
0AF91 Filename              'Mean.20160830_073000.zip'
0AFA9 PAYLOAD

108FC LOCAL HEADER #4       04034B50
10900 Extract Zip Spec      14 '2.0'
10901 Extract OS            00 'MS-DOS'
10902 General Purpose Flag  0000
10904 Compression Method    0000 'Stored'
10906 Last Mod Time         491E5124 'Tue Aug 30 10:09:08 2016'
1090A CRC                   FEE97172
1090E Compressed Length     00008818
10912 Uncompressed Length   00008818
10916 Filename Length       0018
10918 Extra Length          0000
1091A Filename              'Mean.20160830_

4.1.3 Data compression MAY be used to reduce the size of files placed into a ZIP file, but is not required. This format supports the use of multiple data compression algorithms. When compression is used, one of the documented compression algorithms MUST be used. Implementors are advised to experiment with their data to determine which of the available algorithms provides the best compression for their needs. Compression method 8 (Deflate) is the method used by default by most ZIP compatible application programs.

0.zip' 10932 PAYLOAD 1914A LOCAL HEADER #5 04034B50 1914E Extract Zip Spec 14 '2.0' 1914F Extract OS 00 'MS-DOS' 19150 General Purpose Flag 0000 19152 Compression Method 0000 'Stored' 19154 Last Mod Time 491E5129 'Tue Aug 30 10:09:18 2016' 19158 CRC 0B38337E 1915C Compressed Length 00004713 19160 Uncompressed Length 00004713 19164 Filename Length 0018 19166 Extra Length 0000 19168 Filename 'Mean.20160830_081500.zip' 19180 PAYLOAD 1D893 CENTRAL HEADER #1 02014B50 1D897 Created Zip Spec 14 '2.0' 1D898 Created OS 00 'MS-DOS' 1D899 Extract Zip Spec 14 '2.0' 1D89A Extract OS 00 'MS-DOS' 1D89B General Purpose Flag 0000 1D89D Compression Method 0000 'Stored' 1D89F Last Mod Time 491E510F 'Tue Aug 30 10:08:30 2016' 1D8A3 CRC 218B9162 1D8A7 Compressed Length 00005595 1D8AB Uncompressed Length 00005595 1D8AF Filename Length 0018 1D8B1 Extra Length 0000 1D8B3 Comment Length 0000 1D8B5 Disk Start 0000 1D8B7 Int File Attributes 0000 [Bit 0] 0 'Binary Data' 1D8B9 Ext File Attributes 00000020 [Bit 5] Archive 1D8BD Local Header Offset 00000000 1D8C1 Filename 'Mean.20160830_070000.zip' 1D8D9 CENTRAL HEADER #2 02014B50 1D8DD Created Zip Spec 14 '2.0' 1D8DE Created OS 00 'MS-DOS' 1D8DF Extract Zip Spec 14 '2.0' 1D8E0 Extract OS 00 'MS-DOS' 1D8E1 General Purpose Flag 0000 1D8E3 Compression Method 0000 'Stored' 1D8E5 Last Mod Time 491E5117 'Tue Aug 30 10:08:46 2016' 1D8E9 CRC 180124FD 1D8ED Compressed Length 00005972 1D8F1 Uncompressed Length 00005972 1D8F5 Filename Length 0018 1D8F7 Extra Length 0000 1D8F9 Comment Length 0000 1D8FB Disk Start 0000 1D8FD Int File Attributes 0000 [Bit 0] 0 'Binary Data' 1D8FF Ext File Attributes 00000020 [Bit 5] Archive 1D903 Local Header Offset 000055CB 1D907 Filename 'Mean.20160830_071500.zip' 1D91F CENTRAL HEADER #3 02014B50 1D923 Created Zip Spec 14 '2.0' 1D924 Created OS 00 'MS-DOS' 1D925 Extract Zip Spec 14 '2.0' 1D926 Extract OS 00 'MS-DOS' 1D927 General Purpose Flag 0000 1D929 Compression Method 0000 'Stored' 1D92B Last Mod Time 491E511D 'Tue Aug 30 10:08:58 2016' 1D92F CRC 03A4486C 1D933 Compressed Length 00005953 1D937 Uncompressed Length 00005953 1D93B Filename Length 0018 1D93D Extra Length 0000 1D93F Comment Length 0000 1D941 Disk Start 0000 1D943 Int File Attributes 0000 [Bit 0] 0 'Binary Data' 1D945 Ext File Attributes 00000020 [Bit 5] Archive 1D949 Local Header Offset 0000AF73 1D94D Filename 'Mean.20160830_073000.zip' 1D965 CENTRAL HEADER #4 02014B50 1D969 Created Zip Spec 14 '2.0' 1D96A Created OS 00 'MS-DOS' 1D96B Extract Zip Spec 14 '2.0' 1D96C Extract OS 00 'MS-DOS' 1D96D General Purpose Flag 0000 1D96F Compression Method 0000 'Stored' 1D971 Last Mod Time 491E5124 'Tue Aug 30 10:09:08 2016' 1D975 CRC FEE97172 1D979 Compressed Length 00008818 1D97D Uncompressed Length 00008818 1D981 Filename Length 0018 1D983 Extra Length 0000 1D985 Comment Length 0000 1D987 Disk Start 0000 1D989 Int File Attributes 0000 [Bit 0] 0 'Binary Data' 1D98B Ext File Attributes 00000020 [Bit 5] Archive 1D98F Local Header Offset 000108FC 1D993 Filename 'Mean.20160830_

4.1.3 Data compression MAY be used to reduce the size of files placed into a ZIP file, but is not required. This format supports the use of multiple data compression algorithms. When compression is used, one of the documented compression algorithms MUST be used. Implementors are advised to experiment with their data to determine which of the available algorithms provides the best compression for their needs. Compression method 8 (Deflate) is the method used by default by most ZIP compatible application programs.

0.zip' 1D9AB CENTRAL HEADER #5 02014B50 1D9AF Created Zip Spec 14 '2.0' 1D9B0 Created OS 00 'MS-DOS' 1D9B1 Extract Zip Spec 14 '2.0' 1D9B2 Extract OS 00 'MS-DOS' 1D9B3 General Purpose Flag 0000 1D9B5 Compression Method 0000 'Stored' 1D9B7 Last Mod Time 491E5129 'Tue Aug 30 10:09:18 2016' 1D9BB CRC 0B38337E 1D9BF Compressed Length 00004713 1D9C3 Uncompressed Length 00004713 1D9C7 Filename Length 0018 1D9C9 Extra Length 0000 1D9CB Comment Length 0000 1D9CD Disk Start 0000 1D9CF Int File Attributes 0000 [Bit 0] 0 'Binary Data' 1D9D1 Ext File Attributes 00000020 [Bit 5] Archive 1D9D5 Local Header Offset 0001914A 1D9D9 Filename 'Mean.20160830_081500.zip' 1D9F1 END CENTRAL HEADER 06054B50 1D9F5 Number of this disk 0000 1D9F7 Central Dir Disk no 0000 1D9F9 Entries in this disk 0005 1D9FB Total Entries 0005 1D9FD Size of Central Dir 0000015E 1DA01 Offset to Central Dir 0001D893 1DA05 Comment Length 0000 Done

zip文件的结构

> MainFile.zip

> InnerFile1.zip

> InnerFile1.xml

> InnerFile2.zip

> InnerFile2.xml

> InnerFile-N.zip

> InnerFile-N.zip

代码创建zip文件

public void addToZip(File zipFile, File... filesToAdd) {
    final byte[] buffer = new byte[1024];

    FileOutputStream fos = new FileOutputStream(zipFile.getAbsoluteFile());
    ZipOutputStream zos = new ZipOutputStream(fos);

    for (File fileToAdd : filesToAdd) {
        ZipEntry entry = new ZipEntry(fileToAdd.getName());
        try {
            zos.putNextEntry(entry);
            try (FileInputStream in = new FileInputStream(input.getAbsoluteFile())) {
                int len;
                while ((len = in.read(buffer)) > 0) {
                    zos.write(buffer, 0, len);
                }
            }
            zos.closeEntry();
        }
    }
    try {
        zos.finish();
        zos.close();
    } catch (IOException ex) {
        LOGGER.log(Level.SEVERE, null, ex);
    }
}

压缩方法

根据the primary reference for Zip files

4.1.3 Data compression MAY be used to reduce the size of files placed into a ZIP file, but is not required. This format supports the
use of multiple data compression algorithms. When compression is
used, one of the documented compression algorithms MUST be used.
Implementors are advised to experiment with their data to
determine which of the available algorithms provides the best
compression for their needs. Compression method 8 (Deflate) is the
method used by default by most ZIP compatible application
programs
.

在这种具体情况下,使用zipEntry.setMethod(ZipEntry.DEFLATED);不足以让我的文件被遗留的程序所接受。

我讨厌猜测,无法验证我的假设,因此关于在FTP服务器上实际的服务器端文件检查器的可用性的评论/问题,但是值得的,只是假设检查器更喜欢STORED条目到DEFLATED ,这里是如何创建

>从XML文件中缩放的ZIP文件(这是有道理的,因为XML很好地可压缩)和
>从嵌套ZIP文件存储ZIP文件(这也是有道理的,因为通常压缩文件在重新压缩时无法有效缩小)。

这里的问题是当使用STORED条目时,还必须为每个条目设置(un-)压缩大小和CRC。这是你可以做的(不幸的是我正在读取每个嵌套的ZIP文件两次,一次计算CRC,一次将其内容复制到ZIP输出流):

司机应用:

package de.scrum_master.app;

import java.io.File;
import java.io.IOException;
import java.util.SortedMap;
import java.util.TreeMap;

public class Application {
    public static void main(String[] args) throws IOException {
        SortedMap<File, File[]> fileMappings = new TreeMap<>();
        fileMappings.put(
            new File("books.zip"),
            new File[] { new File("books.xml") }
        );
        fileMappings.put(
            new File("cds.zip"),
            new File[] { new File("cds.xml") }
        );
        fileMappings.put(
            new File("clothes.zip"),
            new File[] { new File("clothes.xml") }
        );

        ZipTool zipTool = new ZipTool();
        for (File zipFile : fileMappings.keySet())
            zipTool.addToZip(zipFile, fileMappings.get(zipFile));
        zipTool.addToZip(
            new File("archive.zip"),
            new File[] { new File("books.zip"), new File("cds.zip"), new File("clothes.zip") }
        );
    }
}

ZIP实用程序:

package de.scrum_master.app;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.CRC32;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class ZipTool {
    public void addToZip(File zipFile, File... filesToAdd) throws IOException {
        try (
            FileOutputStream fos = new FileOutputStream(zipFile.getAbsoluteFile());
            ZipOutputStream zos = new ZipOutputStream(fos)
        ) {
            final byte[] buffer = new byte[1024];
            for (File fileToAdd : filesToAdd) {
                ZipEntry entry = new ZipEntry(fileToAdd.getName());
                if (fileToAdd.getName().endsWith(".zip")) {
                    entry.setMethod(ZipEntry.STORED);
                    long fileSize = fileToAdd.length();
                    entry.setSize(fileSize);
                    entry.setCompressedSize(fileSize);
                    CRC32 crc32 = new CRC32();
                    try (FileInputStream in = new FileInputStream(fileToAdd.getAbsoluteFile())) {
                        int len;
                        while ((len = in.read(buffer)) > 0) {
                            crc32.update(buffer, 0, len);
                        }
                    }
                    entry.setCrc(crc32.getValue());
                }
                zos.putNextEntry(entry);
                try (FileInputStream in = new FileInputStream(fileToAdd.getAbsoluteFile())) {
                    int len;
                    while ((len = in.read(buffer)) > 0) {
                        zos.write(buffer, 0, len);
                    }
                }
                zos.closeEntry();
            }
        }
    }
}

也许你可以尝试并提供反馈。如果这还不够好,检查器仍然抱怨,我们可以尝试其他的东西,使zip存档更加相似。

翻译自:https://stackoverflow.com/questions/39147396/how-to-create-a-very-specific-zip-file-structure-using-java

转载注明原文:如何使用Java创建一个非常具体的zip文件结构