匿名通过本文主要向大家介绍了mysql ，EOF等相关知识,希望本文的分享对您有所帮助
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
| 类型 | 名字 | 描述 |
|---|---|---|
| int<3> | 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<1> | 序列号 | |
| string | payload | 报文体，长度即为前面指定的payload长度 |
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
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:///;/pre>
* @version 1.0
* @see http:///
*/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";
}
}以上就是详细介绍mysql 协议的EOF包及解析的内容，更多相关内容请关注微课江湖（）！