如何写入多个对象到文件? [英] How to write multiple objects to file?
问题描述
我想将多个对象写入一个文件,但问题是我没有立即写入所有的对象。我必须写一个对象,然后关闭文件,然后也许过了一段时间,我想添加另一个对象到同一个文件。
我目前正在做
FileOutputStream(filename,true)
,这样它会将对象附加到文件的末尾,而不会覆盖它。但我得到这个错误:
java.io.StreamCorruptedException:无效的类型代码:AC
任何想法如何解决这个问题?
谢谢,
不能将不同的ObjectOutputStreams追加到同一个文件中。您将不得不使用不同的序列化形式,或者读取文件并将所有对象和新对象写入新文件。
I want to write multiple objects to a file, but the problem is that I dont have all the objects to write at once. I have to write one object and then close the file, and then maybe after sometime I want to add another object to the same file.
I am currently doing it as
FileOutputStream("filename", true)
so that it will append the object to the end of file and not overwrite it. But I get this error :
java.io.StreamCorruptedException: invalid type code: AC
any ideas how can I solve this issue ?
Thanks,
You can't append different ObjectOutputStreams to the same file. You would have to use a different form of serialization, or read the file in and write out all the objects plus the new objects to a new file.
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