如何将Java Long转换为Cassandra的byte []？

这是从Java 6中剪切和粘贴的

DataOutputStream.writeLong

public final void writeLong(long v) throws IOException {    writeBuffer[0] = (byte)(v >>> 56);    writeBuffer[1] = (byte)(v >>> 48);    writeBuffer[2] = (byte)(v >>> 40);    writeBuffer[3] = (byte)(v >>> 32);    writeBuffer[4] = (byte)(v >>> 24);    writeBuffer[5] = (byte)(v >>> 16);    writeBuffer[6] = (byte)(v >>>  8);    writeBuffer[7] = (byte)(v >>>  0);    out.write(writeBuffer, 0, 8);incCount(8);}

这是您的情况的修改

public final byte[] longToBytes(long v) {    byte[] writeBuffer = new byte[ 8 ];    writeBuffer[0] = (byte)(v >>> 56);    writeBuffer[1] = (byte)(v >>> 48);    writeBuffer[2] = (byte)(v >>> 40);    writeBuffer[3] = (byte)(v >>> 32);    writeBuffer[4] = (byte)(v >>> 24);    writeBuffer[5] = (byte)(v >>> 16);    writeBuffer[6] = (byte)(v >>>  8);    writeBuffer[7] = (byte)(v >>>  0);    return writeBuffer;}