git

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

概况

ResultsetRow包属于服务端返回ResultSet时的其中一部分包，用于描述结果集的行记录。

mysql通信报文结构

ResultsetRow包

Payload

if(NULL){ 0xfb}else{
 Protocol::LengthEncodedString}

更多详情 ： http://dev.mysql.com/doc/internals/en/com-query-response.html#text-resultset

ResultsetRow包类

/**
 * 
 * <pre><b>resultset row 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 ResultsetRowPacket extends MySQLPacket {
 private static final byte NULL_MARK = (byte) 251; 
 public int columnCount; 
 public List<byte[]> columnValues; 
 public ResultsetRowPacket() {

 } 
 public ResultsetRowPacket(int columnCount) { 
 this.columnCount = columnCount;
 } 
 @Override
 public void read(byte[] data) {
 MySQLMessage mm = new MySQLMessage(data);
 packetLength = mm.readUB3();
 packetId = mm.read(); 
 for (int i = 0; i < columnCount; i++) {
 columnValues.add(mm.readBytesWithLength());
 }
 } @Override
 public void write(ByteBuffer buffer) {
 BufferUtil.writeUB3(buffer, calcPacketSize());
 buffer.put(packetId); 
 for (int i = 0; i < columnCount; i++) { 
 byte[] fv = columnValues.get(i); 
 if (fv == null) {
 buffer.put(NULL_MARK);
 } else {
 BufferUtil.writeLength(buffer, fv.length);
 buffer.put(fv);
 }
 }
 } @Override
 public int calcPacketSize() { 
 int size = 0; 
 for (int i = 0; i < columnCount; i++) { 
 byte[] v = columnValues.get(i);
 size += (v == null || v.length == 0) ? 1 : BufferUtil.getLength(v);
 } return size;
 } @Override
 protected String getPacketInfo() { 
 return "MySQL Resultset Row Packet";
 }

}