RIZO/shgx_tz_hd_label_print_wpf
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mqtt修改

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This commit is contained in:
小魔仙 2025-05-23 08:45:58 +08:00
parent 9d66ffc55b
commit 6646e6b5e5
5 changed files with 119 additions and 43 deletions
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1
RIZO_Application/Modules/RIZO_Application.Modules.ModuleName/RIZO_Application.Modules.ModuleName.csproj
View File

@ -5,6 +5,7 @@
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Prism.Wpf" Version="8.1.97" />
<PackageReference Include="System.Management" Version="6.0.0" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\..\..\RIZO_Application.Models\RIZO_Application.Models.csproj" />

15
RIZO_Application/Modules/RIZO_Application.Modules.ModuleName/ViewModels/MqttControlViewModel.cs
View File

@ -2,6 +2,7 @@
using System.Collections.Generic;
using System.Text.Json;
using System.Threading.Tasks;
using System.Windows;
using MQTTnet.Client;
using Prism.Events;
using Prism.Regions;
@ -17,7 +18,7 @@ namespace RIZO_Application.Modules.ModuleName.ViewModels
private readonly IEventAggregator _eventAggregator;
private MqttHelper? _mqttHelper;
private SubscriptionToken _token;
public MqttControlViewModel(
IRegionManager regionManager,
IEventAggregator eventAggregator)
@ -40,7 +41,7 @@ namespace RIZO_Application.Modules.ModuleName.ViewModels
_mqttHelper = new MqttHelper(serverUrl, 1883, clientId);
_mqttHelper.MessageReceived += HandleMqttMessage;
_mqttHelper.ConnectionFailed += HandleMqttConnectionFailed;
_mqttHelper.Disconnected += Publish;
if (await ConnectMqttAsync())
{
await SubscribeToTopicsAsync();
@ -81,6 +82,7 @@ namespace RIZO_Application.Modules.ModuleName.ViewModels
{
_eventAggregator.GetEvent<SystemLogEvent>().Publish($"订阅:{printTopic}");
}
}
private async Task PublishInitialMessageAsync()
@ -165,7 +167,14 @@ namespace RIZO_Application.Modules.ModuleName.ViewModels
_eventAggregator.GetEvent<SystemLogEvent>().Publish($"发布扫描消息时出错: {ex.Message}");
}
}
public void Publish(string message, int retries, int maxRetries)
{
_eventAggregator.GetEvent<SystemLogEvent>().Publish(message);
if (retries>=maxRetries)
{
MessageBox.Show("MQTT已掉线，请停止扫码");
}
}
public async void Destroy()
{
_token?.Dispose();

7
RIZO_Application/Modules/RIZO_Application.Modules.ModuleName/ViewModels/PrintControlViewModel.cs
View File

@ -5,11 +5,9 @@ using Prism.Events;
using Prism.Regions;
using RIZO_Application.Core;
using RIZO_Application.Core.Mvvm;
using RIZO_Helper.Tools;
using RIZO_Application.Infrastructure.Model;
using System.Linq;
using System.Reflection;
using Microsoft.Extensions.Primitives;
namespace RIZO_Application.Modules.ModuleName.ViewModels
{
@ -19,7 +17,6 @@ namespace RIZO_Application.Modules.ModuleName.ViewModels
private readonly BartenderPrintHelper _printHelper;
private SubscriptionToken _printEventToken;
private bool _isDisposed;
public PrintControlViewModel(
IRegionManager regionManager,
IEventAggregator eventAggregator,
@ -120,6 +117,10 @@ namespace RIZO_Application.Modules.ModuleName.ViewModels
subStringValues: Intersect,
copies: 1);
//bool printSuccess = barTenderPrinter.PrintLabel(templatePath: printDto.Path,
// subStringValues: Intersect,
// copies: 1);
if (printSuccess)
{
_eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印成功: {printDto.Name}");

51
RIZO_Application/Modules/RIZO_Application.Modules.ModuleName/ViewModels/ScanControlViewModel.cs
View File

@ -10,6 +10,7 @@ using RIZO_Helper.Tools;
using System.Windows;
using System.IO.Ports;
using System.Windows.Documents;
using System.Management;
namespace RIZO_Application.Modules.ModuleName.ViewModels
{
@ -21,6 +22,8 @@ namespace RIZO_Application.Modules.ModuleName.ViewModels
private bool _isConnected;
private string _lastLabel;
private DateTime _lastScanTime;
private ManagementEventWatcher watcher= new ManagementEventWatcher(new WqlEventQuery(
"SELECT * FROM Win32_DeviceChangeEvent WHERE EventType = 2 OR EventType = 3"));
// 串口连接状态属性
public bool IsConnected
{
@ -52,11 +55,44 @@ namespace RIZO_Application.Modules.ModuleName.ViewModels
: base(regionManager)
{
watcher.EventArrived += new EventArrivedEventHandler(DeviceChanged);
watcher.Start();
_eventAggregator = eventAggregator;
IsConnected = false; // 初始状态为未连接
InitializeScanHelperAsync().ConfigureAwait(false);
}
private void DeviceChanged(object sender, EventArrivedEventArgs e)
{
// 1. 获取设备变化前的端口列表
string[] portsBefore = SerialPort.GetPortNames();
// 2. 等待系统完成端口更新（重要！）
System.Threading.Thread.Sleep(500);
// 3. 获取设备变化后的端口列表
string[] portsAfter = SerialPort.GetPortNames();
// 4. 检测新增的端口
foreach (string port in portsAfter)
{
if (Array.IndexOf(portsBefore, port) == -1)
{
}
}
// 5. 检测移除的端口
foreach (string port in portsBefore)
{
if (Array.IndexOf(portsAfter, port) == -1)
{
}
}
}
private async Task InitializeScanHelperAsync()
{
try
@ -69,18 +105,17 @@ namespace RIZO_Application.Modules.ModuleName.ViewModels
}
}
public async Task StartComScan()
public async Task StartComScan(string comName = "COM1",int baudRate = 9600)
{
if (_isDisposed)
throw new ObjectDisposedException(nameof(ScanControlViewModel));
string comName = "COM1";
int baudRate = 9600;
if (SerialConfigs.Current != null)
{
comName = SerialConfigs.Current.ComName ?? string.Empty;
baudRate = SerialConfigs.Current.BaudRate ?? 9600;
}
//if (SerialConfigs.Current != null)
//{
// comName = SerialConfigs.Current.ComName ?? string.Empty;
// baudRate = SerialConfigs.Current.BaudRate ?? 9600;
//}
_eventAggregator.GetEvent<SystemLogEvent>().Publish($"串口扫码枪初始化……串口：{comName} 波特率：{baudRate}");

88
RIZO_Application/RIZO_Application.Infrastructure/Util/MqttHelper/MqttHelper.cs
View File

@ -13,12 +13,18 @@ namespace RIZO_Helper.Tools
private readonly IMqttClient _mqttClient;
private MqttClientOptions _options;
private bool _isDisposed;
private readonly SemaphoreSlim _connectionLock = new SemaphoreSlim(1, 1);
// 用于确保只有一个后台重连任务运行
private bool _isReconnecting;
private readonly object _reconnectLock = new object();
// 定义消息接收事件
public event EventHandler<MqttApplicationMessageReceivedEventArgs>? MessageReceived;
public event EventHandler<Exception>? ConnectionFailed;
public Action<string, int, int> Disconnected;
public MqttHelper(string server, int port = 1883, string clientId = "wpf-demo", bool cleanSession = true)
{
if (string.IsNullOrEmpty(server))
@ -37,8 +43,9 @@ namespace RIZO_Helper.Tools
_mqttClient.DisconnectedAsync += async e =>
{
Disconnected.Invoke($"MQTT连接断开，原因: {e.Reason}", 0, 1);
Debug.WriteLine($"MQTT连接断开，原因: {e.Reason}");
await ReconnectWithBackoffAsync();
await StartReconnectIfNeededAsync();
};
_mqttClient.ApplicationMessageReceivedAsync += e =>
@ -58,35 +65,28 @@ namespace RIZO_Helper.Tools
if (_mqttClient.IsConnected)
return true;
await _connectionLock.WaitAsync(cancellationToken);
Debug.WriteLine($"正在连接MQTT服务器: {_options.ChannelOptions}");
try
{
if (_mqttClient.IsConnected)
return true;
Debug.WriteLine($"正在连接MQTT服务器: {_options.ChannelOptions}");
try
{
await _mqttClient.ConnectAsync(_options, cancellationToken);
Debug.WriteLine("MQTT连接成功");
return true;
}
catch (OperationCanceledException)
{
Debug.WriteLine("MQTT连接操作被取消");
throw;
}
catch (Exception ex)
{
Debug.WriteLine($"MQTT连接失败: {ex.Message}");
ConnectionFailed?.Invoke(this, ex);
return false;
}
await _mqttClient.ConnectAsync(_options, cancellationToken);
Debug.WriteLine("MQTT连接成功");
return true;
}
finally
catch (OperationCanceledException)
{
_connectionLock.Release();
Debug.WriteLine("MQTT连接操作被取消");
throw;
}
catch (Exception ex)
{
Debug.WriteLine($"MQTT连接失败: {ex.Message}");
ConnectionFailed?.Invoke(this, ex);
// 连接失败时启动重连
await StartReconnectIfNeededAsync();
return false;
}
}
@ -187,6 +187,35 @@ namespace RIZO_Helper.Tools
}
}
// 启动重连任务（如果没有正在运行的重连任务）
private async Task StartReconnectIfNeededAsync()
{
if (_isDisposed)
return;
// 使用锁确保只有一个重连任务启动
lock (_reconnectLock)
{
if (_isReconnecting)
return;
_isReconnecting = true;
}
try
{
await ReconnectWithBackoffAsync();
}
finally
{
// 无论重连成功或失败，都标记为重连已完成
lock (_reconnectLock)
{
_isReconnecting = false;
}
}
}
private async Task ReconnectWithBackoffAsync()
{
if (_isDisposed)
@ -198,7 +227,9 @@ namespace RIZO_Helper.Tools
while (retries < maxRetries && !_isDisposed)
{
// 指数退避算法，避免频繁重试
int delayMs = baseDelayMs * (int)Math.Pow(2, retries);
Disconnected.Invoke($"将在 {delayMs}ms 后尝试重新连接MQTT服务器 (尝试 {retries + 1}/{maxRetries})", retries+1, maxRetries);
Debug.WriteLine($"将在 {delayMs}ms 后尝试重新连接MQTT服务器 (尝试 {retries + 1}/{maxRetries})");
await Task.Delay(delayMs);
@ -242,7 +273,7 @@ namespace RIZO_Helper.Tools
try
{
// 先取消事件订阅，防止在释放过程中触发事件
_mqttClient.DisconnectedAsync -= async e => await ReconnectWithBackoffAsync();
_mqttClient.DisconnectedAsync -= async e => await StartReconnectIfNeededAsync();
_mqttClient.ApplicationMessageReceivedAsync -= e =>
{
MessageReceived?.Invoke(this, e);
@ -255,7 +286,6 @@ namespace RIZO_Helper.Tools
// 释放资源
_mqttClient.Dispose();
_connectionLock.Dispose();
}
catch (Exception ex)
{