详细介绍mysql协议的EOF包及解析

git

https://github.com/sea-boat/mysql-protocol

概况

mysql的EOF包用于标明查询结果的结尾。

mysql通信报文结构

EOF包

Payload

Type Name Description
int<1> header [fe] EOF header
if capabilities & CLIENT_PROTOCOL_41 { 
int<2> warnings number of warnings 
int<2> status_flags Status Flags
}

更多详情 ： http://dev.mysql.com/doc/internals/en/packet-EOF_Packet.html

EOF包操作

1. EOF包类

/**
 * 
 * <pre><b>mysql eof packet.</b></pre>
 * @author 
 * <pre>seaboat</pre>
 * <pre><b>email: </b>849586227@qq.com</pre>
 * <pre><b>blog: </b>http://www.gxlcms.com/;/pre>
 * @version 1.0
 * @see http://www.gxlcms.com/
 */public class EOFPacket extends MySQLPacket {

 public byte header = (byte) 0xfe; 
 public int warningCount; 
 public int status = 2; 
 @Override
 public void read(byte[] data) {
 MySQLMessage mm = new MySQLMessage(data);
 packetLength = mm.readUB3();
 packetId = mm.read();
 header = mm.read();
 warningCount = mm.readUB2();
 status = mm.readUB2();
 } @Override
 public void write(ByteBuffer buffer) { 
 int size = calcPacketSize();
 BufferUtil.writeUB3(buffer, size);
 buffer.put(packetId);
 buffer.put(header);
 BufferUtil.writeUB2(buffer, warningCount);
 BufferUtil.writeUB2(buffer, status);
 } @Override
 public int calcPacketSize() { 
 return 5;
 } 
 @Override
 protected String getPacketInfo() { 
 return "MySQL EOF Packet";
 }

}