不同厂家RFID读写器统一编程接口的实现

不同厂家RFID读写器类做成统一编程接口的实现设计模式：采用工厂模式一：准备工作：1：准备好不同厂家的RFID读写器及配置天线和馈线，RFID标签若干2：收集不同厂家读写器及其编程接口API二：编写一个RFID读写器操作基类下面是核心代码：/// <summary>/// 不同厂家RFID读写器操作基类/// </summary>public class BaseSpeedReader{protected Form mFrmScan = null;protected DataTable mDtEPC = null;public delegate void MethodInvoke();public delegate void NoticeEPC_EventHandler(object sender, Common.Args.NoticeEPCEventArgs e);[Category("DMZ"), Description("通知界面层处理标签"), DefaultValue((true))]public event NoticeEPC_EventHandler NoticeEPCHandler;//EventHandler[Category("DMZ"), Description("通知界面层已连接读写器"), DefaultValue((true))]public event EventHandler NoticeConnectedHandler;/// <summary>/// 通知界面层告知标签的读取信息/// </summary>public void NoticeEPC(){if (NoticeEPCHandler != null){NoticeEPCEventArgs arg = new NoticeEPCEventArgs();arg.DtEPC = this.mDtEPC;NoticeEPCHandler(null, arg);}}/// <summary>/// 通知界面层连接读写器成功或失败/// </summary>public void NoticeConnected(){if (NoticeConnectedHandler != null){EventArgs arg = new EventArgs();NoticeConnectedHandler(null, arg);}}}三：编写一个A厂家读写器操作类internal class SpeedReaderForHSJC : BaseSpeedReader{///<summary>///连接读取器并开始读取标签///</summary>///<param name="readerName"></param>///<returns>连接成功返回true</returns>public override bool Run(string readerName){try{Reader.Logging += newEventHandler<LoggingEventArgs>(LoggingHandler);Reader.Connected += newEventHandler<ConnectionChangedEventArgs>(ConnectedHandler);Reader.Started += newEventHandler<StartedEventArgs>(StartedHandler);Reader.TagsReported += newEventHandler<TagsReportedEventArgs>(TagsReportedHandler);Reader.Connect(readerName,100); //默认端口为100//如果读写器连接成功，就通知基类if (Reader.IsConnected){base.NoticeConnected(); //通知基类Reader.Start();}return Reader.IsConnected;}catch (Exception ex){throw ex;}return false;}///<summary>///读到标签后的触发事件///</summary>///<param name="sender"></param>///<param name="args"></param>public void TagsReportedHandler(object sender, TagsReportedEventArgs args){try{foreach (Tag tag in args.TagReport.Tags){if (tag.Epc.Length > 17){string myEPC = tag.Epc.Substring(0, 12);//从第5位开始读取DataRow[] rows = mDtEPC.Select("EPC='"+ myEPC + "'");if (rows.Length > 0){//读取次数加1rows[0]["ReadCount"] =System.Convert.ToInt32(rows[0]["ReadCount"]) + 1;}else{//新增一行DataRow newRow = mDtEPC.NewRow();newRow["EPC"] = myEPC;newRow["ReadCount"] = 1;mDtEPC.Rows.Add(newRow);}}}//end foreachbase.NoticeEPC(); //通知基类，然后触发回调函数，给界面层调用}catch (Exception ex){throw ex;}}}四：编写一个B厂家读写器操作类略五：工厂类的实现///<summary>///工厂类的实现///</summary>public class SpeedReaderFactory{public SpeedReaderFactory(){}public static BaseSpeedReader GetSpeedReader(Enum.EnumReader ReaderType){BaseSpeedReader reader = null;if (ReaderType == RFIDReader.Enum.EnumReader.Impinj){reader = new SpeedReaderForImpinj();}else if (ReaderType == RFIDReader.Enum.EnumReader.HSJC){reader = new SpeedReaderForHSJC();}//采用反射方式调用//string dll_path = "";//string startPath =System.IO.Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().C odeBase);//startPath = startPath.Replace("file:\\", "");//Assembly assembly = Assembly.LoadFrom(dll_path);//Type objType = assembly.GetType(name);return reader;}}六：UI界面层的调用1：定义读写器对象public RFIDReader.BaseSpeedReader MultiReaderHelper{get{if (mMultiReaderHelper == null){if (Properties.Settings.Default.ReaderType == 1){mMultiReaderHelper =RFIDReader.SpeedReaderFactory.GetSpeedReader(RFIDReader.Enum.EnumReader.Imp inj);}else if (Properties.Settings.Default.ReaderType == 2){mMultiReaderHelper =RFIDReader.SpeedReaderFactory.GetSpeedReader(RFIDReader.Enum.EnumReader.HSJ C);}}return mMultiReaderHelper;}}2：给该读写器加上触发事件public FrmScanOut(){InitializeComponent();MultiReaderHelper.NoticeEPCHandler += newRFIDReader.BaseSpeedReader.NoticeEPC_EventHandler(MultiReaderHelper_NoticeE PCHandler);MultiReaderHelper.NoticeConnectedHandler += newEventHandler(MultiReaderHelper_NoticeConnectedHandler);}void MultiReaderHelper_NoticeConnectedHandler(object sender, EventArgs e){Invoke((EventHandler)(delegate{lbLog.Items.Add(DateTime.Now.ToString("yyyyMMdd HH:mm:ss") + " RFID读写器启动成功！开始读取箱包...");this.timer1.Enabled = true;}));//lbLog.Items.Add(DateTime.Now.ToString("yyyyMMdd HH:mm:ss") + " RFID读写器启动成功！开始读取箱包...");}void MultiReaderHelper_NoticeEPCHandler(object sender, mon.Args.NoticeEPCEventArgs e){//将正确的箱包显示在列表框，同时显示误读的箱包信息base.ShowEPCMsg(e.DtEPC, dgTask, dgTaskStat, this.lbResult);}。