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fix：【IoT 物联网】code review tcp 实现

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YunaiV
2025-07-23 19:17:33 +08:00
parent bd8052f56b
commit f70f578ac5
7 changed files with 133 additions and 101 deletions
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29
yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/codec/tcp/IotTcpBinaryDeviceMessageCodec.java
View File

@@ -10,11 +10,12 @@ import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
// TODO @haohao：设备地址(变长) 是不是非必要哈？因为认证后，不需要每次都带呀。
/**
* TCP 二进制格式 {@link IotDeviceMessage} 编解码器
*
* 使用自定义二进制协议格式：
* 包头(4字节) | 地址长度(2字节) | 设备地址(变长) | 功能码(2字节) | 消息序号(2字节) | 包体数据(变长)
* 包头(4 字节) | 地址长度(2 字节) | 设备地址(变长) | 功能码(2 字节) | 消息序号(2 字节) | 包体数据(变长)
*
* @author 芋道源码
*/
@@ -27,6 +28,7 @@ public class IotTcpBinaryDeviceMessageCodec implements IotDeviceMessageCodec {
*/
public static final String TYPE = "TCP_BINARY";
// TODO @haohao：这个注释不太对。
// ==================== 常量定义 ====================
@Override
@@ -67,10 +69,11 @@ public class IotTcpBinaryDeviceMessageCodec implements IotDeviceMessageCodec {
TcpDataPackage dataPackage = decodeTcpDataPackage(Buffer.buffer(bytes));
// 2. 根据功能码确定方法
// TODO @haohao：会不会有事件上报哈。
String method = (dataPackage.getCode() == TcpDataPackage.CODE_HEARTBEAT) ?
MessageMethod.STATE_ONLINE : MessageMethod.PROPERTY_POST;
// 3. 解析负载数据和请求ID
// 3. 解析负载数据和请求 ID
PayloadInfo payloadInfo = parsePayloadInfo(dataPackage.getPayload());
// 4. 构建 IoT 设备消息（设置完整的必要参数）
@@ -78,13 +81,16 @@ public class IotTcpBinaryDeviceMessageCodec implements IotDeviceMessageCodec {
payloadInfo.getRequestId(), method, payloadInfo.getParams());
// 5. 设置设备相关信息
// TODO @haohao：serverId 不是这里解析的哈。
Long deviceId = parseDeviceId(dataPackage.getAddr());
message.setDeviceId(deviceId);
// 6. 设置TCP协议相关信息
// 6. 设置 TCP 协议相关信息
// TODO @haohao：serverId 不是这里解析的哈。
message.setServerId(generateServerId(dataPackage));
// 7. 设置租户ID（TODO: 后续可以从设备信息中获取）
// 7. 设置租户 ID（TODO: 后续可以从设备信息中获取）
// TODO @haohao：租户 id 不是这里解析的哈。
// message.setTenantId(getTenantIdByDeviceId(deviceId));
if (log.isDebugEnabled()) {
@@ -104,6 +110,7 @@ public class IotTcpBinaryDeviceMessageCodec implements IotDeviceMessageCodec {
return TYPE;
}
// TODO @haohao：这种简单解析，中间不用空格哈。
/**
* 构建完整负载
*/
@@ -130,12 +137,10 @@ public class IotTcpBinaryDeviceMessageCodec implements IotDeviceMessageCodec {
return payload.toString();
}
// ==================== 编解码方法 ====================
/**
* 解析负载信息（包含requestId和params）
* 解析负载信息（包含 requestId 和 params）
*/
private PayloadInfo parsePayloadInfo(String payload) {
if (StrUtil.isEmpty(payload)) {
@@ -143,6 +148,7 @@ public class IotTcpBinaryDeviceMessageCodec implements IotDeviceMessageCodec {
}
try {
// TODO @haohao：使用 jsonUtils
JSONObject jsonObject = JSONUtil.parseObj(payload);
String requestId = jsonObject.getStr(PayloadField.REQUEST_ID);
if (StrUtil.isEmpty(requestId)) {
@@ -185,7 +191,7 @@ public class IotTcpBinaryDeviceMessageCodec implements IotDeviceMessageCodec {
* @return 服务ID
*/
private String generateServerId(TcpDataPackage dataPackage) {
// 使用协议类型 + 设备地址 + 消息序号生成唯一的服务ID
// 使用协议类型 + 设备地址 + 消息序号生成唯一的服务 ID
return String.format("tcp_%s_%d", dataPackage.getAddr(), dataPackage.getMid());
}
@@ -300,23 +306,28 @@ public class IotTcpBinaryDeviceMessageCodec implements IotDeviceMessageCodec {
* 消息方法常量
*/
public static class MessageMethod {
public static final String PROPERTY_POST = "thing.property.post"; // 数据上报
public static final String STATE_ONLINE = "thing.state.online"; // 心跳
}
/**
* 负载字段名
*/
private static class PayloadField {
public static final String METHOD = "method";
public static final String PARAMS = "params";
public static final String TIMESTAMP = "timestamp";
public static final String REQUEST_ID = "requestId";
public static final String MESSAGE_ID = "msgId";
}
// ==================== TCP 数据包编解码方法 ====================
// TODO @haohao：lombok 简化
/**
* 负载信息类
*/
@@ -361,11 +372,13 @@ public class IotTcpBinaryDeviceMessageCodec implements IotDeviceMessageCodec {
// ==================== 自定义异常 ====================
// TODO @haohao：可以搞个全局的；
/**
* TCP 编解码异常
*/
public static class TcpCodecException extends RuntimeException {
// TODO @haohao：非必要构造方法，可以去掉哈。
public TcpCodecException(String message) {
super(message);
}

31
yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/codec/tcp/IotTcpCodecManager.java
View File

@@ -8,11 +8,11 @@ import org.springframework.stereotype.Component;
/**
* TCP编解码器管理器（简化版）
*
*
* 核心功能：
* - 自动协议检测（二进制 vs JSON）
* - 统一编解码接口
* - 默认使用JSON协议
* - 默认使用 JSON 协议
*
* @author 芋道源码
*/
@@ -22,6 +22,8 @@ public class IotTcpCodecManager implements IotDeviceMessageCodec {
public static final String TYPE = "TCP";
// TODO @haohao：@Resource
@Autowired
private IotTcpBinaryDeviceMessageCodec binaryCodec;
@@ -40,21 +42,22 @@ public class IotTcpCodecManager implements IotDeviceMessageCodec {
@Override
public byte[] encode(IotDeviceMessage message) {
// 默认使用JSON协议编码
// 默认使用 JSON 协议编码
return jsonCodec.encode(message);
}
// TODO @haohao：要不还是不自动检测，用户手动配置哈。简化一些。。。
@Override
public IotDeviceMessage decode(byte[] bytes) {
// 自动检测协议类型并解码
if (isJsonFormat(bytes)) {
if (log.isDebugEnabled()) {
log.debug("[decode][检测到JSON协议] 数据长度: {}字节", bytes.length);
log.debug("[decode][检测到 JSON 协议，数据长度: {} 字节]", bytes.length);
}
return jsonCodec.decode(bytes);
} else {
if (log.isDebugEnabled()) {
log.debug("[decode][检测到二进制协议] 数据长度: {}字节", bytes.length);
log.debug("[decode][检测到二进制协议，数据长度: {} 字节]", bytes.length);
}
return binaryCodec.decode(bytes);
}
@@ -63,7 +66,7 @@ public class IotTcpCodecManager implements IotDeviceMessageCodec {
// ==================== 便捷方法 ====================
/**
* 使用JSON协议编码
* 使用 JSON 协议编码
*/
public byte[] encodeJson(IotDeviceMessage message) {
return jsonCodec.encode(message);
@@ -95,42 +98,46 @@ public class IotTcpCodecManager implements IotDeviceMessageCodec {
/**
* 检测是否为JSON格式
*
*
* 检测规则：
* 1. 数据以 '{' 开头
* 2. 包含 "method" 或 "id" 字段
*/
private boolean isJsonFormat(byte[] bytes) {
// TODO @haohao：ArrayUtil.isEmpty(bytes) 可以简化下
if (bytes == null || bytes.length == 0) {
return useJsonByDefault;
}
try {
// 检测JSON格式：以 '{' 开头
// 检测 JSON 格式：以 '{' 开头
if (bytes[0] == '{') {
// 进一步验证是否为有效JSON
// TODO @haohao：不一定按照顺序写，这个可能要看下。
// 进一步验证是否为有效 JSON
String jsonStr = new String(bytes, 0, Math.min(bytes.length, 100));
return jsonStr.contains("\"method\"") || jsonStr.contains("\"id\"");
}
// 检测二进制格式：长度 >= 8 且符合二进制协议结构
if (bytes.length >= 8) {
// 读取包头（前4字节表示后续数据长度）
// 读取包头（前 4 字节表示后续数据长度）
int expectedLength = ((bytes[0] & 0xFF) << 24) |
((bytes[1] & 0xFF) << 16) |
((bytes[2] & 0xFF) << 8) |
(bytes[3] & 0xFF);
// 验证长度是否合理
// TODO @haohao：expectedLength > 0 多余的貌似；
if (expectedLength == bytes.length - 4 && expectedLength > 0 && expectedLength < 1024 * 1024) {
return false; // 二进制格式
}
}
} catch (Exception e) {
log.warn("[isJsonFormat][协议检测异常] 使用默认协议: {}", getDefaultProtocol(), e);
log.warn("[isJsonFormat][协议检测异常，使用默认协议: {}]", getDefaultProtocol(), e);
}
// 默认使用当前设置的协议类型
return useJsonByDefault;
}
}

29
yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/codec/tcp/IotTcpJsonDeviceMessageCodec.java
View File

@@ -12,16 +12,16 @@ import org.springframework.stereotype.Component;
import java.nio.charset.StandardCharsets;
/**
* TCP JSON格式 {@link IotDeviceMessage} 编解码器
*
* 采用纯JSON格式传输，参考EMQX和HTTP模块的数据格式
*
* TCP JSON 格式 {@link IotDeviceMessage} 编解码器
*
* 采用纯 JSON 格式传输，参考 EMQX 和 HTTP 模块的数据格式
*
* JSON消息格式：
* {
* "id": "消息ID",
* "id": "消息 ID",
* "method": "消息方法",
* "deviceId": "设备ID",
* "productKey": "产品Key",
* "deviceId": "设备 ID",
* "productKey": "产品 Key",
* "deviceName": "设备名称",
* "params": {...},
* "timestamp": 时间戳
@@ -35,6 +35,7 @@ public class IotTcpJsonDeviceMessageCodec implements IotDeviceMessageCodec {
public static final String TYPE = "TCP_JSON";
// TODO @haohao：变量不太对；
// ==================== 常量定义 ====================
@Override
@@ -77,14 +78,15 @@ public class IotTcpJsonDeviceMessageCodec implements IotDeviceMessageCodec {
}
try {
// 转换为JSON字符串
// 转换为 JSON 字符串
String jsonString = new String(bytes, StandardCharsets.UTF_8);
if (log.isDebugEnabled()) {
log.debug("[decode][开始解码] JSON长度: {}字节, 内容: {}", bytes.length, jsonString);
}
// 解析JSON消息
// 解析 JSON 消息
// TODO @haohao：JsonUtils
JSONObject jsonMessage = JSONUtil.parseObj(jsonString);
// 构建IoT设备消息
@@ -129,7 +131,7 @@ public class IotTcpJsonDeviceMessageCodec implements IotDeviceMessageCodec {
}
/**
* 构建JSON消息
* 构建 JSON 消息
*/
private JSONObject buildJsonMessage(IotDeviceMessage message) {
JSONObject jsonMessage = new JSONObject();
@@ -189,7 +191,7 @@ public class IotTcpJsonDeviceMessageCodec implements IotDeviceMessageCodec {
message.setMsg(msg);
}
// 设置服务ID（基于JSON格式）
// 设置服务 ID（基于 JSON 格式）
message.setServerId(generateServerId(jsonMessage));
return message;
@@ -216,22 +218,26 @@ public class IotTcpJsonDeviceMessageCodec implements IotDeviceMessageCodec {
StrUtil.isNotEmpty(id) ? id.substring(0, Math.min(8, id.length())) : "noId");
}
// TODO @haohao：注释格式不对；
/**
* 消息方法常量
*/
public static class MessageMethod {
public static final String PROPERTY_POST = "thing.property.post"; // 数据上报
public static final String STATE_ONLINE = "thing.state.online"; // 心跳
public static final String EVENT_POST = "thing.event.post"; // 事件上报
public static final String PROPERTY_SET = "thing.property.set"; // 属性设置
public static final String PROPERTY_GET = "thing.property.get"; // 属性获取
public static final String SERVICE_INVOKE = "thing.service.invoke"; // 服务调用
}
/**
* JSON字段名（参考EMQX和HTTP模块格式）
*/
private static class JsonField {
public static final String ID = "id";
public static final String METHOD = "method";
public static final String DEVICE_ID = "deviceId";
@@ -241,5 +247,6 @@ public class IotTcpJsonDeviceMessageCodec implements IotDeviceMessageCodec {
public static final String TIMESTAMP = "timestamp";
public static final String CODE = "code";
public static final String MESSAGE = "message";
}
}

2
yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/tcp/IotTcpUpstreamProtocol.java
View File

@@ -30,6 +30,7 @@ public class IotTcpUpstreamProtocol {
private final IotDeviceMessageService messageService;
// TODO @haohao：不用的变量，可以删除；
private final IotDeviceCommonApi deviceApi;
private final IotTcpCodecManager codecManager;
@@ -58,6 +59,7 @@ public class IotTcpUpstreamProtocol {
@PostConstruct
public void start() {
// TODO @haohao：类似下面 62 到 75 是处理 options 的，因为中间写了注释，其实可以不用空行；然后 77 到 91 可以中间空喊去掉，更紧凑一点；
// 创建服务器选项
NetServerOptions options = new NetServerOptions()
.setPort(tcpProperties.getPort())

9
yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/tcp/router/IotTcpDownstreamHandler.java
View File

@@ -1,7 +1,6 @@
package cn.iocoder.yudao.module.iot.gateway.protocol.tcp.router;
import cn.iocoder.yudao.module.iot.core.mq.message.IotDeviceMessage;
import cn.iocoder.yudao.module.iot.gateway.codec.tcp.IotTcpDeviceMessageCodec;
import cn.iocoder.yudao.module.iot.gateway.service.device.message.IotDeviceMessageService;
import lombok.extern.slf4j.Slf4j;
@@ -24,11 +23,12 @@ public class IotTcpDownstreamHandler {
private final IotDeviceMessageService messageService;
private final IotTcpDeviceMessageCodec codec;
// TODO @haohao：代码没提交全，有报错。
// private final IotTcpDeviceMessageCodec codec;
public IotTcpDownstreamHandler(IotDeviceMessageService messageService) {
this.messageService = messageService;
this.codec = new IotTcpDeviceMessageCodec();
// this.codec = new IotTcpDeviceMessageCodec();
}
/**
@@ -42,7 +42,8 @@ public class IotTcpDownstreamHandler {
message.getDeviceId(), message.getMethod(), message.getId());
// 编码消息用于日志记录和验证
byte[] encodedMessage = codec.encode(message);
byte[] encodedMessage = null;
// codec.encode(message);
log.debug("[handle][消息编码成功] 设备ID: {}, 编码后长度: {} 字节",
message.getDeviceId(), encodedMessage.length);

55
yudao-module-iot/yudao-module-iot-gateway/src/test/java/cn/iocoder/yudao/module/iot/gateway/codec/tcp/TcpBinaryDataPacketExamples.java
View File

@@ -6,6 +6,7 @@ import lombok.extern.slf4j.Slf4j;
import java.util.HashMap;
import java.util.Map;
// TODO @haohao：这种写成单测，会好点
/**
* TCP二进制格式数据包示例
*
@@ -21,13 +22,13 @@ public class TcpBinaryDataPacketExamples {
public static void main(String[] args) {
IotTcpBinaryDeviceMessageCodec codec = new IotTcpBinaryDeviceMessageCodec();
// 1. 数据上报包示例
demonstrateDataReport(codec);
// 2. 心跳包示例
demonstrateHeartbeat(codec);
// 3. 复杂数据上报示例
demonstrateComplexDataReport(codec);
}
@@ -37,23 +38,23 @@ public class TcpBinaryDataPacketExamples {
*/
private static void demonstrateDataReport(IotTcpBinaryDeviceMessageCodec codec) {
log.info("=== 二进制格式数据上报包示例 ===");
// 创建传感器数据
Map<String, Object> sensorData = new HashMap<>();
sensorData.put("temperature", 25.5);
sensorData.put("humidity", 60.2);
sensorData.put("pressure", 1013.25);
sensorData.put("battery", 85);
// 创建设备消息
IotDeviceMessage message = IotDeviceMessage.requestOf("thing.property.post", sensorData);
message.setDeviceId(123456L);
// 编码
byte[] packet = codec.encode(message);
log.info("编码后数据包长度: {} 字节", packet.length);
log.info("编码后数据包(HEX): {}", bytesToHex(packet));
// 解码验证
IotDeviceMessage decoded = codec.decode(packet);
log.info("解码后消息ID: {}", decoded.getId());
@@ -63,7 +64,7 @@ public class TcpBinaryDataPacketExamples {
log.info("解码后服务ID: {}", decoded.getServerId());
log.info("解码后上报时间: {}", decoded.getReportTime());
log.info("解码后参数: {}", decoded.getParams());
System.out.println();
}
@@ -72,16 +73,16 @@ public class TcpBinaryDataPacketExamples {
*/
private static void demonstrateHeartbeat(IotTcpBinaryDeviceMessageCodec codec) {
log.info("=== 二进制格式心跳包示例 ===");
// 创建心跳消息
IotDeviceMessage heartbeat = IotDeviceMessage.requestOf("thing.state.online", null);
heartbeat.setDeviceId(123456L);
// 编码
byte[] packet = codec.encode(heartbeat);
log.info("心跳包长度: {} 字节", packet.length);
log.info("心跳包(HEX): {}", bytesToHex(packet));
// 解码验证
IotDeviceMessage decoded = codec.decode(packet);
log.info("解码后消息ID: {}", decoded.getId());
@@ -90,7 +91,7 @@ public class TcpBinaryDataPacketExamples {
log.info("解码后设备ID: {}", decoded.getDeviceId());
log.info("解码后服务ID: {}", decoded.getServerId());
log.info("解码后参数: {}", decoded.getParams());
System.out.println();
}
@@ -99,40 +100,40 @@ public class TcpBinaryDataPacketExamples {
*/
private static void demonstrateComplexDataReport(IotTcpBinaryDeviceMessageCodec codec) {
log.info("=== 二进制格式复杂数据上报示例 ===");
// 创建复杂设备数据
Map<String, Object> deviceData = new HashMap<>();
// 环境数据
Map<String, Object> environment = new HashMap<>();
environment.put("temperature", 23.8);
environment.put("humidity", 55.0);
environment.put("co2", 420);
deviceData.put("environment", environment);
// GPS数据
Map<String, Object> location = new HashMap<>();
location.put("latitude", 39.9042);
location.put("longitude", 116.4074);
location.put("altitude", 43.5);
deviceData.put("location", location);
// 设备状态
Map<String, Object> status = new HashMap<>();
status.put("battery", 78);
status.put("signal", -65);
status.put("online", true);
deviceData.put("status", status);
// 创建设备消息
IotDeviceMessage message = IotDeviceMessage.requestOf("thing.property.post", deviceData);
message.setDeviceId(789012L);
// 编码
byte[] packet = codec.encode(message);
log.info("复杂数据包长度: {} 字节", packet.length);
log.info("复杂数据包(HEX): {}", bytesToHex(packet));
// 解码验证
IotDeviceMessage decoded = codec.decode(packet);
log.info("解码后消息ID: {}", decoded.getId());
@@ -141,7 +142,7 @@ public class TcpBinaryDataPacketExamples {
log.info("解码后设备ID: {}", decoded.getDeviceId());
log.info("解码后服务ID: {}", decoded.getServerId());
log.info("解码后参数: {}", decoded.getParams());
System.out.println();
}
@@ -164,9 +165,9 @@ public class TcpBinaryDataPacketExamples {
log.error("数据包长度不足");
return;
}
int index = 0;
// 解析包头(4字节) - 后续数据长度
int totalLength = ((packet[index] & 0xFF) << 24) |
((packet[index + 1] & 0xFF) << 16) |
@@ -174,27 +175,27 @@ public class TcpBinaryDataPacketExamples {
(packet[index + 3] & 0xFF);
index += 4;
log.info("包头 - 后续数据长度: {} 字节", totalLength);
// 解析设备地址长度(2字节)
int addrLength = ((packet[index] & 0xFF) << 8) | (packet[index + 1] & 0xFF);
index += 2;
log.info("设备地址长度: {} 字节", addrLength);
// 解析设备地址
String deviceAddr = new String(packet, index, addrLength);
index += addrLength;
log.info("设备地址: {}", deviceAddr);
// 解析功能码(2字节)
int functionCode = ((packet[index] & 0xFF) << 8) | (packet[index + 1] & 0xFF);
index += 2;
log.info("功能码: {} ({})", functionCode, getFunctionCodeName(functionCode));
// 解析消息序号(2字节)
int messageId = ((packet[index] & 0xFF) << 8) | (packet[index + 1] & 0xFF);
index += 2;
log.info("消息序号: {}", messageId);
// 解析包体数据
if (index < packet.length) {
String payload = new String(packet, index, packet.length - index);

79
yudao-module-iot/yudao-module-iot-gateway/src/test/java/cn/iocoder/yudao/module/iot/gateway/codec/tcp/TcpJsonDataPacketExamples.java
View File

@@ -7,9 +7,10 @@ import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;
// TODO @haohao：这种写成单测，会好点
/**
* TCP JSON格式数据包示例
*
*
* 演示如何使用新的JSON格式进行TCP消息编解码
*
* @author 芋道源码
@@ -19,22 +20,22 @@ public class TcpJsonDataPacketExamples {
public static void main(String[] args) {
IotTcpJsonDeviceMessageCodec codec = new IotTcpJsonDeviceMessageCodec();
// 1. 数据上报示例
demonstrateDataReport(codec);
// 2. 心跳示例
demonstrateHeartbeat(codec);
// 3. 事件上报示例
demonstrateEventReport(codec);
// 4. 复杂数据上报示例
demonstrateComplexDataReport(codec);
// 5. 便捷方法示例
demonstrateConvenienceMethods();
// 6. EMQX兼容性示例
demonstrateEmqxCompatibility();
}
@@ -44,24 +45,24 @@ public class TcpJsonDataPacketExamples {
*/
private static void demonstrateDataReport(IotTcpJsonDeviceMessageCodec codec) {
log.info("=== JSON格式数据上报示例 ===");
// 创建传感器数据
Map<String, Object> sensorData = new HashMap<>();
sensorData.put("temperature", 25.5);
sensorData.put("humidity", 60.2);
sensorData.put("pressure", 1013.25);
sensorData.put("battery", 85);
// 创建设备消息
IotDeviceMessage message = IotDeviceMessage.requestOf("thing.property.post", sensorData);
message.setDeviceId(123456L);
// 编码
byte[] packet = codec.encode(message);
String jsonString = new String(packet, StandardCharsets.UTF_8);
log.info("编码后JSON: {}", jsonString);
log.info("数据包长度: {} 字节", packet.length);
// 解码验证
IotDeviceMessage decoded = codec.decode(packet);
log.info("解码后消息ID: {}", decoded.getId());
@@ -69,7 +70,7 @@ public class TcpJsonDataPacketExamples {
log.info("解码后设备ID: {}", decoded.getDeviceId());
log.info("解码后服务ID: {}", decoded.getServerId());
log.info("解码后参数: {}", decoded.getParams());
System.out.println();
}
@@ -78,24 +79,24 @@ public class TcpJsonDataPacketExamples {
*/
private static void demonstrateHeartbeat(IotTcpJsonDeviceMessageCodec codec) {
log.info("=== JSON格式心跳示例 ===");
// 创建心跳消息
IotDeviceMessage heartbeat = IotDeviceMessage.requestOf("thing.state.online", null);
heartbeat.setDeviceId(123456L);
// 编码
byte[] packet = codec.encode(heartbeat);
String jsonString = new String(packet, StandardCharsets.UTF_8);
log.info("编码后JSON: {}", jsonString);
log.info("心跳包长度: {} 字节", packet.length);
// 解码验证
IotDeviceMessage decoded = codec.decode(packet);
log.info("解码后消息ID: {}", decoded.getId());
log.info("解码后方法: {}", decoded.getMethod());
log.info("解码后设备ID: {}", decoded.getDeviceId());
log.info("解码后服务ID: {}", decoded.getServerId());
System.out.println();
}
@@ -104,31 +105,31 @@ public class TcpJsonDataPacketExamples {
*/
private static void demonstrateEventReport(IotTcpJsonDeviceMessageCodec codec) {
log.info("=== JSON格式事件上报示例 ===");
// 创建事件数据
Map<String, Object> eventData = new HashMap<>();
eventData.put("eventType", "alarm");
eventData.put("level", "warning");
eventData.put("description", "温度过高");
eventData.put("value", 45.8);
// 创建事件消息
IotDeviceMessage event = IotDeviceMessage.requestOf("thing.event.post", eventData);
event.setDeviceId(123456L);
// 编码
byte[] packet = codec.encode(event);
String jsonString = new String(packet, StandardCharsets.UTF_8);
log.info("编码后JSON: {}", jsonString);
log.info("事件包长度: {} 字节", packet.length);
// 解码验证
IotDeviceMessage decoded = codec.decode(packet);
log.info("解码后消息ID: {}", decoded.getId());
log.info("解码后方法: {}", decoded.getMethod());
log.info("解码后设备ID: {}", decoded.getDeviceId());
log.info("解码后参数: {}", decoded.getParams());
System.out.println();
}
@@ -137,10 +138,10 @@ public class TcpJsonDataPacketExamples {
*/
private static void demonstrateComplexDataReport(IotTcpJsonDeviceMessageCodec codec) {
log.info("=== JSON格式复杂数据上报示例 ===");
// 创建复杂设备数据（类似EMQX格式）
Map<String, Object> deviceData = new HashMap<>();
// 环境数据
Map<String, Object> environment = new HashMap<>();
environment.put("temperature", 23.8);
@@ -148,7 +149,7 @@ public class TcpJsonDataPacketExamples {
environment.put("co2", 420);
environment.put("pm25", 35);
deviceData.put("environment", environment);
// GPS数据
Map<String, Object> location = new HashMap<>();
location.put("latitude", 39.9042);
@@ -156,7 +157,7 @@ public class TcpJsonDataPacketExamples {
location.put("altitude", 43.5);
location.put("speed", 0.0);
deviceData.put("location", location);
// 设备状态
Map<String, Object> status = new HashMap<>();
status.put("battery", 78);
@@ -164,24 +165,24 @@ public class TcpJsonDataPacketExamples {
status.put("online", true);
status.put("version", "1.2.3");
deviceData.put("status", status);
// 创建设备消息
IotDeviceMessage message = IotDeviceMessage.requestOf("thing.property.post", deviceData);
message.setDeviceId(789012L);
// 编码
byte[] packet = codec.encode(message);
String jsonString = new String(packet, StandardCharsets.UTF_8);
log.info("编码后JSON: {}", jsonString);
log.info("复杂数据包长度: {} 字节", packet.length);
// 解码验证
IotDeviceMessage decoded = codec.decode(packet);
log.info("解码后消息ID: {}", decoded.getId());
log.info("解码后方法: {}", decoded.getMethod());
log.info("解码后设备ID: {}", decoded.getDeviceId());
log.info("解码后参数: {}", decoded.getParams());
System.out.println();
}
@@ -190,9 +191,9 @@ public class TcpJsonDataPacketExamples {
*/
private static void demonstrateConvenienceMethods() {
log.info("=== 便捷方法示例 ===");
IotTcpJsonDeviceMessageCodec codec = new IotTcpJsonDeviceMessageCodec();
// 使用便捷方法编码数据上报
Map<String, Object> sensorData = Map.of(
"temperature", 26.5,
@@ -200,11 +201,11 @@ public class TcpJsonDataPacketExamples {
);
byte[] dataPacket = codec.encodeDataReport(sensorData, 123456L, "smart_sensor", "device_001");
log.info("便捷方法编码数据上报: {}", new String(dataPacket, StandardCharsets.UTF_8));
// 使用便捷方法编码心跳
byte[] heartbeatPacket = codec.encodeHeartbeat(123456L, "smart_sensor", "device_001");
log.info("便捷方法编码心跳: {}", new String(heartbeatPacket, StandardCharsets.UTF_8));
// 使用便捷方法编码事件
Map<String, Object> eventData = Map.of(
"eventType", "maintenance",
@@ -212,7 +213,7 @@ public class TcpJsonDataPacketExamples {
);
byte[] eventPacket = codec.encodeEventReport(eventData, 123456L, "smart_sensor", "device_001");
log.info("便捷方法编码事件: {}", new String(eventPacket, StandardCharsets.UTF_8));
System.out.println();
}
@@ -221,7 +222,7 @@ public class TcpJsonDataPacketExamples {
*/
private static void demonstrateEmqxCompatibility() {
log.info("=== EMQX格式兼容性示例 ===");
// 模拟EMQX风格的消息格式
String emqxStyleJson = """
{
@@ -235,19 +236,19 @@ public class TcpJsonDataPacketExamples {
"timestamp": 1642781234567
}
""";
IotTcpJsonDeviceMessageCodec codec = new IotTcpJsonDeviceMessageCodec();
// 解码EMQX风格的消息
byte[] emqxBytes = emqxStyleJson.getBytes(StandardCharsets.UTF_8);
IotDeviceMessage decoded = codec.decode(emqxBytes);
log.info("EMQX风格消息解码成功:");
log.info("消息ID: {}", decoded.getId());
log.info("方法: {}", decoded.getMethod());
log.info("设备ID: {}", decoded.getDeviceId());
log.info("参数: {}", decoded.getParams());
System.out.println();
}
}