Question

我正在尝试阅读eBay Turbolister数据库。通过perl读取键给出：

ItemBLOBs
ItemBLOBs_BLOBIndex
ItemBLOBs_ItemId
Items
Items_FolderId
Items_Modified
Items_Status
ProductVariations
ProductVariations_ITEM_ID
ProductVariations_SYS_SKU
RawDescriptions
VariationPictureBLOBs
VariationPictureBLOBs_BLOBIndex
VariationPictureBLOBs_ItemId
VariationPictureBLOBs_VARIATION_VALUE
VariationPictures
VariationPictures_BLOBOrder
VariationPictures_ItemId
VariationPictures_VARIATION_VALUE
VariationSpecifics
__DATA
__SEQUENCE

阅读价值并不是那么成功。它提供二进制值，其添加长度远小于数据库文件的长度。

我使用的perl脚本是：

#!/usr/bin/perl
use strict;
use BerkeleyDB;

my $filename = 'database';
my %o;

tie %o, "BerkeleyDB::Btree", -Filename => $filename,
                             -Flags    => DB_RDONLY
or die "Cannot open database '$filename: $!\n";

foreach (keys %o)
      { print "$_\n" }

我的最终目标是使用Java，但现在我甚至无法用Java读取密钥。

任何想法如何进行？

一张纸条。对于任何工作解决方案，我必须从BDB Java版切换到本机Java绑定。

Answer 1

我用Java做的事情如下：

public static void main(final String[] args) throws Exception
{
    final EnvironmentConfig environmentConfig = new EnvironmentConfig();
    //setup EnvironmentConfig

    final DatabaseConfig primaryConfig = new DatabaseConfig();
    //setup DatabaseConfig

    final SecondaryConfig secondaryConfig = new SecondaryConfig();
    //setup SecondaryConfig if necessary

    final Database primary = environment.openDatabase(null,
            pathToDb, null, primaryConfig);

    final DatabaseEntry key = new DatabaseEntry(new byte[ONE_KIBIBYTE]);
    final DatabaseEntry value = new DatabaseEntry(new byte[ONE_MEBIBYTE]);

    final Cursor cursor = primary.openCursor(null, null);

    OperationStatus status = cursor.getFirst(key, value, null);
    int count = 0;
    while (status.equals(OperationStatus.SUCCESS))
    {
        ++count;
        int readId = -1;
        int size = -1;
        try
        {
            final TupleInput input = new TupleInput(value.getData(), value
                    .getOffset(), value.getSize());
            size = value.getSize();
            readId = input.readInt();

            //read other fields from 'input' local variable

            if (status.equals(OperationStatus.SUCCESS))
            {
                status = cursor.getNext(key, value, null);
            }
        }
        catch (final Exception e)
        {
            throw new RuntimeException(e);
        }
    }
}

逆向工程BerkeleyDB数据库

1 个答案: