java - Base64 解码并解压缩字符串

Question

我有一个字符串，它首先被压缩(不是 gzip)，然后进行 base64 编码。我想再次得到纯文本。以下代码

private void decode_decompress(String string) {
    byte[] decodedBytes = Base64.decodeBase64(string.getBytes());
    ByteArrayOutputStream stream = new ByteArrayOutputStream();
    Inflater decompresser = new Inflater(true);
    InflaterOutputStream inflaterOutputStream = new InflaterOutputStream(stream, decompresser);
    try {
        inflaterOutputStream.write(decodedBytes);
        inflaterOutputStream.close();
        byte[] output2 = stream.toByteArray();          
        logger.info("Data: {}", output2.toString());
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

抛出异常:

java.util.zip.ZipException: invalid stored block lengths
        at java.util.zip.InflaterOutputStream.write(InflaterOutputStream.java:273)
        at java.io.FilterOutputStream.write(FilterOutputStream.java:97)
        at de.martinm.tools.EBICS.DSTools.decode_decompress(DSTools.java:87)
        at de.martinm.tools.EBICS.DSTools.process(DSTools.java:77)
        at de.martinm.tools.EBICS.DSTools.main(DSTools.java:100)

我想，我又混淆了输入/输出膨胀/放气

这是经过压缩和base64编码的数据:

eJx1U2tzqjAQ/SsO96NTw1PBQTr4qlgtyqvVL3cihEehiSYg1l9/rd46dZx+y549Ocme3dUfDx9FY48oywjucUKL5xoIhyTKcNLjfG/8oHINVkIcwYJg1OMw4R4N3c0SDMuKokW1eUafNo0QHcISNk5qmPW4tCy3XQDqum6hTRayFqEJcHle4C6MbnRLqqUzQ+R5HvAaOHEiliV/vtlnjR5XUdw90S5hd8Lz8jfhwLJf9ATwNp+5YYo+4EOGvyoJ0ekWy7rsDM5ICMtz7b/+uXH/Ljgf/7JvG1oHFnF3tlg4JoZ+OQewqJChR6zruOZNPCdRVVTMMOebJcxHZRJ1kqeDJJqfR6IQJDdngt1cBt5ncYKnO8d99Tp9gYoweT2O40BUatURhWKZvVHV7E8102XHXTDN5ZI1vZyX6KKeSm+SmK9VlQZ5nZeKvd8X7aPUmRztxdp8rtaZom1kJlsRqsK95RSS7RJ7AYOQbg6S2vZXrjWA6S5vqzlWYCG/z947YgXjcOasFuF8/JKs34nngCGYIVBukJd9jLHftuQSmfV6LJFg2CQrU5Ze4qJYpR1/b5qD2MaOvSv27Z1PV4GA+p1U1IDFWLJaifGEKmGKxZ3lq5Ox0EHb1G++JvGIpaSayxYd9J2kfO7nhXiw4XYYD3fyJsbC8kmDVv2iJZqqaAtnn/d08MPkL8NHh+1plHFpmEtzcM5ekXN00yBw075rg4PLxhgmz7d1cAf/gG5GAdISI2oNjVHfGried5K/QrrPfqYUHfwH7sSu62b8A39iR+Y=

Answer 1

这解决了问题:

private void decode_decompress(String string) {
    byte[] decodedBytes = Base64.decodeBase64(string);
    ByteArrayOutputStream stream = new ByteArrayOutputStream();
    Inflater decompresser = new Inflater(false);
    InflaterOutputStream inflaterOutputStream = new InflaterOutputStream(stream, decompresser);
    try {
        inflaterOutputStream.write(decodedBytes);
        inflaterOutputStream.close();
        String data = stream.toString();
        logger.info("Data: {}", data);
    } catch (IOException e) {
        logger.error(string, e);
    }
}