首先创建必要的输入流，然后遍历所有记录，把其中的内容存储到一个字节数组。

We begin by creating the necessary input streams, then loop through each record, storing its contents in a byte array.

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首先创建必要的输入流，然后遍历所有记录，把其中的内容存储到一个字节数组。

We begin by creating the necessary input streams, then loop through each record, storing its contents in a byte array.

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