问题描述
我必须在其中我有一个二进制文件转换成一个自定义的文件格式，这就需要分割文件中添加一些数据，然后将其重新打包为新文件的项目工作。
I have to work on a project in which I have to convert a binary file into a custom file format, which requires splitting the file adding some data to it and then repacking it into the new file.
例如
我有1 MB的文件，我必须把它分割成固定长度的数据块，然后加入一些数据作为头吧。
之后，整个文件将被重新包装成一个新的文件中。
I have a file of 1 MB and I have to split it into chunks of fixed length and then adding some data as a header to it.After that the entire file will be repackaged into a new file.
请任何帮助将AP preciated。
Please any help will be appreciated.
推荐答案
首先，你使用的读的X字节块为单个字节数组，其中x是块大小。我建议将这些字节数组存储在一个创建新的文件。
Then you create a DataOutputStream for creating the new file.
最后，你遍历一个for循环的ArrayList和数组的内容写入DataOutputStream类，preceded或之后的附加数据，您需要添加对每个块。
Finally, you iterate over your ArrayList with a for loop and write the contents of the arrays to the DataOutputStream, preceded or followed by the additional data you need to add for each chunk.
我希望我能够帮助你。当事情不清，随意问。
I hope I was able to help you. When something is unclear, feel free to ask.
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