git
https://github.com/sea-boat/mysql-protocol
概況
ColumnCount包屬于服務端返回ResultSet時的其中一部分包。
mysql通信報文結構
類型 | 名字 | 描述 |
---|---|---|
int | payload長度 | 按照the least significant byte first存儲,3個字節的payload和1個字節的序列號組合成報文頭 |
int | 序列號 | |
string | payload | 報文體,長度即為前面指定的payload長度 |
ColumnCount包
Payload
Protocol::LengthEncodedInteger
更多詳情 :?http://dev.mysql.com/doc/internals/en/com-query-response.html#packet-ProtocolText::ResultsetRow
ColumnCount包類
/** ?*? ?*?<pre class="brush:php;toolbar:false"><b>column count packet.</b>
?*?@author? ?*?
seaboat
?*?
<b>email: </b>849586227@qq.com
?*?
<b>blog: </b>http://www.php.cn/;/pre> * @version 1.0 * @see http://www.php.cn/ */public class ColumnCountPacket extends MySQLPacket { public int columnCount; public void read(byte[] data) { MySQLMessage mm = new MySQLMessage(data); this.packetLength = mm.readUB3(); this.packetId = mm.read(); this.columnCount = (int) mm.readLength(); } @Override public void write(ByteBuffer buffer) { int size = calcPacketSize(); BufferUtil.writeUB3(buffer, size); buffer.put(packetId); BufferUtil.writeLength(buffer, columnCount); } @Override public int calcPacketSize() { int size = BufferUtil.getLength(columnCount); return size; } @Override protected String getPacketInfo() { return "MySQL Column Count Packet"; } }
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