拆分csv文件而不会出现不完整的行

Question

我已经成功拆分了一个csv，但是有时它的某些文件块的末行不完整。该文件使用RandomAccessFile对象包装。这是我的代码：

long sourceSize = raf.length();
long bytesPerSplit = sourceSize / splits;
long remainingBytes = sourceSize % splits;

int maxReadBufferSize = 8 * 1024; // 8 KB
for (int destIx = 1; destIx <= splits; destIx++) {
    // TODO: change so that first name is the year involved
    try(BufferedOutputStream bw = new BufferedOutputStream(
        new FileOutputStream(destination + "\\chunk" + destIx + ".csv"))) {
      if (bytesPerSplit > maxReadBufferSize) {
        long numReads = bytesPerSplit / maxReadBufferSize;
        long numRemainingRead = bytesPerSplit % maxReadBufferSize;
        for (int i = 0; i < numReads; i++) {
          readWrite(raf, bw, maxReadBufferSize);
        }
        if (numRemainingRead > 0) readWrite(raf, bw, numRemainingRead);
      } else readWrite(raf, bw, bytesPerSplit);
    }

我想过要检查最后读取的字节数组是否事先在末尾有换行符，以及是否不增加要读取的缓冲区大小，但我不知道是否可以使用RandomAccessFile对象做到这一点