git
https://github.com/sea-boat/mysql-protocol
概况
mysql客户端通过删除DB命令包告诉服务端删除某个schema。
mysql通信报文结构
| 类型 | 名字 | 描述 |
|---|---|---|
| int | payload长度 | 按照the least significant byte first存储，3个字节的payload和1个字节的序列号组合成报文头 |
| int | 序列号 | |
| string | payload | 报文体，长度即为前面指定的payload长度 |
删除DB命令包
Payload
1 [06] COM_DROP_DBstring[EOF] schema name
更多详情 ： http://dev.mysql.com/doc/internals/en/com-drop-db.html
删除DB命令包操作
删除DB命令包类
/** * *mysql drop db packet.* @author *seaboat*email: 849586227@qq.com*blog: http://www.php.cn/;/pre> * @version 1.0 * @see http://www.php.cn/ */public class DropDBPacket extends MySQLPacket { public byte flag; public byte[] schema; @Override public void read(byte[] data) { MySQLMessage mm = new MySQLMessage(data); packetLength = mm.readUB3(); packetId = mm.read(); flag = mm.read(); this.schema = mm.readBytes(); } @Override public void write(ByteBuffer buffer) { BufferUtil.writeUB3(buffer, calcPacketSize()); buffer.put(packetId); buffer.put(COM_DROP_DB); buffer.put(schema); } @Override public int calcPacketSize() { int i = 1; i += schema.length; return i; } @Override protected String getPacketInfo() { return "MySQL Drop DB Packet"; } }以上就是mysql 协议的删除DB命令包及解析的内容，更多相关内容请关注PHP中文网（www.php.cn）！
