详细介绍mysql 协议的FieldList命令包及解析

1              [04] COM_FIELD_LISTstring[NUL]    tablestring[EOF]    field wildcard

/**
 * 
 * <pre class="brush:php;toolbar:false"><b>mysql field list packet.</b>

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 * @version 1.0
 * @see //m.sbmmt.com/
 */public class FieldListPacket extends MySQLPacket {
    public byte flag;    public byte[] table;    public byte[] fieldWildcard;    @Override
    public void read(byte[] data) {
        MySQLMessage mm = new MySQLMessage(data);
        packetLength = mm.readUB3();
        packetId = mm.read();
        flag = mm.read();
        table = mm.readBytesWithNull();
        fieldWildcard = mm.readBytes();
    }    @Override
    public void write(ByteBuffer buffer) {
        BufferUtil.writeUB3(buffer, calcPacketSize());
        buffer.put(packetId);
        buffer.put(COM_FIELD_LIST);
        BufferUtil.writeWithNull(buffer, table);
        buffer.put(fieldWildcard);
    }    @Override
    public int calcPacketSize() {        int i = 1;
        i += table.length + 1;
        i += fieldWildcard.length;        return i;
    }    @Override
    protected String getPacketInfo() {        return "MySQL Field List Packet";
    }

}