反序列化字符串缓冲区

发布于 2024-10-20 14:00:21 字数 175 浏览 1 评论 0原文

我有一个 db varchar 字段，看起来像 Java StringBuffer 序列化的结果：

íjava.lang.StringBuffer [many random characters here removed for this question]

如何将其反序列化为 String？

原文

I have a db varchar field looks like the result of Java StringBuffer serialization:

íjava.lang.StringBuffer [many random characters here removed for this question]

how do I deserialize it into String?

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第几種人 2024-10-27 14:00:21

本质上，您需要这样做：

byte[] varcharContents = ... // get the bytes of the field, not via a String
ObjectInputStream ois = 
    new ObjectInputStream(new ByteArrayInputStream(varcharContents));
StringBuffer sb = (StringBuffer)ois.readObject();
String s = sb.toString();

您必须希望能够真正获取序列化生成的原始字节，并且它们在进出数据库的过程中没有被转换。

Essentially you need to do this:

byte[] varcharContents = ... // get the bytes of the field, not via a String
ObjectInputStream ois = 
    new ObjectInputStream(new ByteArrayInputStream(varcharContents));
StringBuffer sb = (StringBuffer)ois.readObject();
String s = sb.toString();

You'll have to hope that you can really get the original bytes produced by the serialisation back, and that they haven't been transformed on their way to and from the DB.

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