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设备发现与组网测试工具设计与实现 原创
进修的泡芙
发布于 2025-6-17 20:41
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设备发现与组网测试工具设计与实现
一、项目概述
基于HarmonyOS分布式能力构建的设备发现与组网测试工具，可自动发现周边设备并测试组网性能。借鉴《鸿蒙跨端U同步》中的设备发现与状态同步机制，实现多设备自动组网、网络质量测试与可视化分析。
二、架构设计
±--------------------+
设备发现引擎
(Discovery Engine)
±---------±---------+
±---------v----------+ ±--------------------+
组网测试控制器 <—> 分布式通信服务
(Test Controller) (Distributed Comm)
±---------±---------+ ±--------------------+
±---------v----------+
测试结果可视化
(Visualization)
±--------------------+
三、核心代码实现
设备发现服务
// 设备发现服务
public class DeviceDiscoveryService {
private static final String TAG = “DeviceDiscovery”;
private DeviceManager deviceManager;
private List<DeviceInfo> discoveredDevices = new ArrayList<>();
private DiscoveryListener listener;
public DeviceDiscoveryService(Context context) {
this.deviceManager = DeviceManager.getInstance(context);
// 开始发现设备
public void startDiscovery(DiscoveryListener listener) {
this.listener = listener;
deviceManager.startDiscovery(new DeviceDiscoveryCallback() {
@Override
public void onDeviceFound(DeviceInfo device) {
if (!containsDevice(device)) {
discoveredDevices.add(device);
notifyDeviceFound(device);
}
@Override
public void onDiscoveryFailed(int errorCode) {
notifyDiscoveryFailed(errorCode);
});
// 停止发现设备
public void stopDiscovery() {
deviceManager.stopDiscovery();
// 获取已发现设备列表
public List<DeviceInfo> getDiscoveredDevices() {
return new ArrayList<>(discoveredDevices);
private boolean containsDevice(DeviceInfo newDevice) {
for (DeviceInfo device : discoveredDevices) {
if (device.getDeviceId().equals(newDevice.getDeviceId())) {
return true;
}
return false;
private void notifyDeviceFound(DeviceInfo device) {
if (listener != null) {
listener.onDeviceFound(device);
}
private void notifyDiscoveryFailed(int errorCode) {
if (listener != null) {
listener.onDiscoveryFailed(errorCode);
}
public interface DiscoveryListener {
void onDeviceFound(DeviceInfo device);
void onDiscoveryFailed(int errorCode);
// 设备信息类
public static class DeviceInfo {
private String deviceId;
private String deviceName;
private DeviceType deviceType;
private int signalStrength; // dBm
// Getters & Setters
public String getDeviceId() { return deviceId; }
public String getDeviceName() { return deviceName; }
public DeviceType getDeviceType() { return deviceType; }
public int getSignalStrength() { return signalStrength; }
public enum DeviceType {
PHONE, TABLET, TV, IOT
}
组网测试控制器
// 组网测试控制器
public class NetworkTestController {
private static final String TAG = “NetworkTest”;
private DistributedDataManager dataManager;
private String sessionId;
private TestListener listener;
private Map<String, TestResult> testResults = new ConcurrentHashMap<>();
public NetworkTestController(Context context) {
this.dataManager = DistributedDataManagerFactory.getInstance()
.createDistributedDataManager(context);
// 创建测试会话
public void createTestSession(String sessionId, List<DeviceInfo> devices) {
this.sessionId = sessionId;
// 注册测试结果监听
dataManager.registerDataChangeListener(
"network_test_" + sessionId,
new DataChangeListener() {
@Override
public void onDataChanged(String deviceId, String key, String value) {
TestResult result = TestResult.fromJson(value);
testResults.put(deviceId, result);
if (listener != null) {
listener.onTestProgress(deviceId, result);
if (testResults.size() == devices.size()) {
if (listener != null) {
listener.onTestCompleted(testResults);
}
}
);
// 向所有设备发送测试指令
for (DeviceInfo device : devices) {
startPingTest(device.getDeviceId());
}
// 启动Ping测试
private void startPingTest(String deviceId) {
JSONObject testCommand = new JSONObject();
try {
testCommand.put("command", "start_ping_test");
testCommand.put("target_device", DeviceInfo.getLocalDeviceId());
testCommand.put("test_id", sessionId);
catch (JSONException e) {
return;
dataManager.putString(
"network_test_cmd_" + deviceId,
testCommand.toString()
);
// 测试结果类
public static class TestResult {
private String deviceId;
private int latency; // ms
private float packetLoss; // %
private int bandwidth; // Mbps
public String toJson() {
JSONObject json = new JSONObject();
try {
json.put("deviceId", deviceId);
json.put("latency", latency);
json.put("packetLoss", packetLoss);
json.put("bandwidth", bandwidth);
catch (JSONException e) {
return "{}";
return json.toString();
public static TestResult fromJson(String jsonStr) {
try {
JSONObject json = new JSONObject(jsonStr);
TestResult result = new TestResult();
result.deviceId = json.getString("deviceId");
result.latency = json.getInt("latency");
result.packetLoss = (float)json.getDouble("packetLoss");
result.bandwidth = json.getInt("bandwidth");
return result;
catch (JSONException e) {
return null;
}
public interface TestListener {
void onTestProgress(String deviceId, TestResult result);
void onTestCompleted(Map<String, TestResult> results);
}
测试执行端实现
// 测试执行Ability
public class TestExecutorAbility extends Ability {
private static final String TAG = “TestExecutor”;
private DistributedDataManager dataManager;
@Override
public void onStart(Intent intent) {
super.onStart(intent);
dataManager = DistributedDataManagerFactory.getInstance()
.createDistributedDataManager(this);
// 监听测试命令
dataManager.registerDataChangeListener(
"network_test_cmd_" + DeviceInfo.getLocalDeviceId(),
new DataChangeListener() {
@Override
public void onDataChanged(String deviceId, String key, String value) {
try {
JSONObject command = new JSONObject(value);
if ("start_ping_test".equals(command.getString("command"))) {
String testId = command.getString("test_id");
String targetDevice = command.getString("target_device");
executeNetworkTest(testId, targetDevice);
} catch (JSONException e) {
HiLog.error(TAG, "Invalid test command: " + e.getMessage());
}
);
// 执行网络测试
private void executeNetworkTest(String testId, String targetDevice) {
new Thread(() -> {
// 模拟网络测试结果
NetworkTestController.TestResult result = new NetworkTestController.TestResult();
result.deviceId = DeviceInfo.getLocalDeviceId();
// 测试延迟
result.latency = measureLatency(targetDevice);
// 测试丢包率
result.packetLoss = measurePacketLoss(targetDevice);
// 测试带宽
result.bandwidth = measureBandwidth(targetDevice);
// 上报测试结果
dataManager.putString(
"network_test_" + testId,
result.toJson()
);
}).start();
// 测量延迟
private int measureLatency(String targetDevice) {
// 实际实现应使用真实的网络测量方法
return 50 + (int)(Math.random() * 50);
// 测量丢包率
private float measurePacketLoss(String targetDevice) {
// 实际实现应使用真实的网络测量方法
return (float)(Math.random() * 5);
// 测量带宽
private int measureBandwidth(String targetDevice) {
// 实际实现应使用真实的网络测量方法
return 50 + (int)(Math.random() * 50);
}
测试结果可视化
// 测试结果展示AbilitySlice
public class TestResultSlice extends AbilitySlice {
private Map<String, NetworkTestController.TestResult> results;
private RadarChartView radarChart;
@Override
public void onStart(Intent intent) {
super.onStart(intent);
setUIContent(ResourceTable.Layout_test_result_layout);
// 获取测试结果
results = intent.getSerializableParam("results");
// 初始化图表
radarChart = (RadarChartView) findComponentById(ResourceTable.Id_radar_chart);
displayResults();
private void displayResults() {
List<RadarChartView.Indicator> indicators = new ArrayList<>();
// 添加指标
indicators.add(new RadarChartView.Indicator("延迟(ms)", 0, 100));
indicators.add(new RadarChartView.Indicator("丢包率(%)", 0, 5));
indicators.add(new RadarChartView.Indicator("带宽(Mbps)", 0, 100));
radarChart.setIndicators(indicators);
// 添加设备数据
for (Map.Entry<String, NetworkTestController.TestResult> entry : results.entrySet()) {
String deviceName = DeviceInfo.getDeviceName(entry.getKey());
NetworkTestController.TestResult result = entry.getValue();
RadarChartView.DataSet dataSet = new RadarChartView.DataSet();
dataSet.setLabel(deviceName);
dataSet.setColor(getDeviceColor(entry.getKey()));
dataSet.addValue(result.latency);
dataSet.addValue(result.packetLoss * 100); // 转换为百分比
dataSet.addValue(result.bandwidth);
radarChart.addDataSet(dataSet);
radarChart.startAnimation();
private int getDeviceColor(String deviceId) {
// 为不同设备分配不同颜色
int hash = deviceId.hashCode();
return Color.rgb(
(hash & 0xFF0000) >> 16,
(hash & 0x00FF00) >> 8,
hash & 0x0000FF
);
}
四、XML布局示例
<!-- 设备发现布局 discovery_layout.xml -->
<DirectionalLayout
xmlns:ohos=“http://schemas.huawei.com/res/ohos”
ohos:width=“match_parent”
ohos:height=“match_parent”
ohos:orientation=“vertical”
ohos:padding=“24vp”>
<Text
ohos:width="match_parent"
ohos:height="wrap_content"
ohos:text="设备发现与组网测试"
ohos:text_size="32fp"
ohos:margin_bottom="24vp"/>
<Button
ohos:id="$+id/start_discovery"
ohos:width="match_parent"
ohos:height="60vp"
ohos:text="开始发现设备"
ohos:margin_bottom="16vp"/>
<ScrollView
ohos:width="match_parent"
ohos:height="0vp"
ohos:weight="1">
<ListContainer
ohos:id="$+id/device_list"
ohos:width="match_parent"
ohos:height="match_content"/>
</ScrollView>
<Button
ohos:id="$+id/start_test"
ohos:width="match_parent"
ohos:height="60vp"
ohos:text="开始组网测试"
ohos:visibility="hide"
ohos:margin_top="16vp"/>
</DirectionalLayout>
<!-- 测试结果布局 test_result_layout.xml -->
<DirectionalLayout
xmlns:ohos=“http://schemas.huawei.com/res/ohos”
ohos:width=“match_parent”
ohos:height=“match_parent”
ohos:orientation=“vertical”
ohos:padding=“24vp”>
<Text
ohos:width="match_parent"
ohos:height="wrap_content"
ohos:text="组网测试结果"
ohos:text_size="28fp"
ohos:margin_bottom="24vp"/>
<com.example.testtool.RadarChartView
ohos:id="$+id/radar_chart"
ohos:width="match_parent"
ohos:height="400vp"
ohos:margin_bottom="24vp"/>
<TableLayout
ohos:id="$+id/result_table"
ohos:width="match_parent"
ohos:height="match_content"/>
</DirectionalLayout>
五、技术创新点
智能设备发现：自动发现周边HarmonyOS设备并识别设备类型
多维度测试：全面测量延迟、丢包率、带宽等网络指标
分布式测试：利用HarmonyOS分布式能力实现多设备协同测试
可视化分析：雷达图直观展示各设备网络性能差异
实时反馈：测试过程中实时更新进度和结果
六、总结
本设备发现与组网测试工具实现了以下核心价值：
网络质量评估：量化多设备间的通信性能
问题诊断：快速定位组网中的性能瓶颈
设备管理：可视化展示周边设备状态
自动化测试：一键完成多设备组网测试
标准规范：建立统一的设备组网测试方法
系统借鉴了《鸿蒙跨端U同步》中的设备发现与状态同步机制，将游戏场景的设备管理技术应用于组网测试领域。未来可增加更多测试指标（如抖动、吞吐量等），并与网络优化策略结合实现智能组网。
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