给装修公司做网站,wordpress文章评论数,网站前台和后台设计,wordpress导航栏颜色本章内容其实没有多大难度#xff0c;主要考察大家的细心程度.计算数据长度然后截取相应字节数组并按照协议进行解码#xff0c;编码则反之。
1.基础消息的编解码
Override
public BasicMessage decode(byte[] bytes) {int dataLength ByteUtil.bytesToInt(ByteUtil.extra…本章内容其实没有多大难度主要考察大家的细心程度.计算数据长度然后截取相应字节数组并按照协议进行解码编码则反之。
1.基础消息的编解码
Override
public BasicMessage decode(byte[] bytes) {int dataLength ByteUtil.bytesToInt(ByteUtil.extract(bytes, 2, 4));if (dataLength ! bytes.length) {throw new IllegalArgumentException(The data length is incorrect.);}return new BasicMessage().setRequest(RequestType.valueOfId(ByteUtil.extract(bytes, 0, 1)[0])).setResponse(ResponseType.valueOfId(ByteUtil.extract(bytes, 1, 1)[0])).setDataLength(dataLength).setPayload(ByteUtil.extract(bytes, 6, dataLength - 1 - 1 - 4 - 8)).setTimestamp(ByteUtil.bytesToLong(ByteUtil.extract(bytes, dataLength - 8, 8)));
}Override
public byte[] encode() {byte[] request new byte[]{this.getRequest().getId()};byte[] response new byte[]{this.getResponse().getId()};byte[] payload (null this.getPayload()) ? new byte[]{} : this.getPayload();byte[] timestamp ByteUtil.longToBytes(this.getTimestamp(), 8);byte[] dataLength ByteUtil.intToBytes(request.length response.length 4 payload.length timestamp.length, 4);return ByteUtil.concat(request,response,dataLength,payload,timestamp);
}2.登入、登出消息的编解码
Override
public Login decode(byte[] bytes) {return new Login().setLoginId(ByteUtil.bytesToShort(ByteUtil.extract(bytes, 0, 2))).setLoginInfo(new String(ByteUtil.extract(bytes, 2, bytes.length - 2), StandardCharsets.UTF_8));
}Override
public byte[] encode() {return ByteUtil.concat(ByteUtil.shortToBytes(this.getLoginId(), 2),this.getLoginInfo().getBytes(StandardCharsets.UTF_8));
}Override
public Logout decode(byte[] bytes) {return new Logout().setLogoutId(ByteUtil.bytesToShort(ByteUtil.extract(bytes, 0, 2)));
}Override
public byte[] encode() {return ByteUtil.concat(ByteUtil.shortToBytes(this.getLogoutId(), 2));
}3.上行、下行消息的编解码
Override
public Upstream decode(byte[] bytes) {return new Upstream().setStatus(StatusType.valueOfId(ByteUtil.extract(bytes, 0, 1)[0])).setLongitude(ByteUtil.bytesToInt(ByteUtil.extract(bytes, 1, 4))).setLatitude(ByteUtil.bytesToInt(ByteUtil.extract(bytes, 5, 4)));
}Override
public byte[] encode() {return ByteUtil.concat(new byte[]{this.getStatus().getId()},ByteUtil.intToBytes(this.getLongitude(), 4),ByteUtil.intToBytes(this.getLatitude(), 4));
}Override
public Downstream decode(byte[] bytes) {return new Downstream().setCommand(CommandType.valueOfId(ByteUtil.extract(bytes, 0, 1)[0])).setStatus(StatusType.valueOfId(ByteUtil.extract(bytes, 1, 1)[0]));
}Override
public byte[] encode() {return ByteUtil.concat(new byte[]{this.getCommand().getId()},new byte[]{this.getStatus().getId()});
}4.文件传输、文件下载的编解码
Override
public FileTransfer decode(byte[] bytes) {int nameLength ByteUtil.bytesToInt(ByteUtil.extract(bytes, 0, 1));String filename new String(ByteUtil.extract(bytes, 1, nameLength), StandardCharsets.UTF_8);long id ByteUtil.bytesToLong(ByteUtil.extract(bytes, 1 nameLength, 8));int total ByteUtil.bytesToInt(ByteUtil.extract(bytes, 1 nameLength 8, 4));int index ByteUtil.bytesToInt(ByteUtil.extract(bytes, 1 nameLength 8 4, 4));int dataLength ByteUtil.bytesToInt(ByteUtil.extract(bytes, 1 nameLength 8 4 4, 4));byte[] content ByteUtil.extract(bytes, 1 nameLength 8 4 4 4, dataLength);int crc ByteUtil.crc(content, content.length);return new FileTransfer().setNameLength(nameLength).setFilename(filename).setId(id).setTotal(total).setIndex(index).setDataLength(dataLength).setContent(content).setCrc(crc);
}Override
public byte[] encode() {byte[] filename this.getFilename().getBytes(StandardCharsets.UTF_8);byte[] nameLength ByteUtil.intToBytes(filename.length, 1);byte[] id ByteUtil.longToBytes(this.getId(), 8);byte[] total ByteUtil.intToBytes(this.getTotal(), 4);byte[] index ByteUtil.intToBytes(this.getIndex(), 4);byte[] content this.getContent();byte[] dataLength ByteUtil.intToBytes(content.length, 4);byte[] crc ByteUtil.intToBytes(ByteUtil.crc(content, content.length), 1);return ByteUtil.concat(nameLength,filename,id,total,index,dataLength,content,crc);
}Override
public FileDownload decode(byte[] bytes) {int nameLength ByteUtil.bytesToInt(ByteUtil.extract(bytes, 0, 1));String filename new String(ByteUtil.extract(bytes, 1, nameLength), StandardCharsets.UTF_8);return new FileDownload().setNameLength(nameLength).setFilename(filename);
}Override
public byte[] encode() {byte[] filename this.getFilename().getBytes(StandardCharsets.UTF_8);byte[] nameLength ByteUtil.intToBytes(filename.length, 1);return ByteUtil.concat(nameLength,filename);
}
