雷击程序（七）------日志文件

    将程序执行过程中的一些变量写入日志文件，可方便查看程序执行情况。本程序中自定义了一个简单的txt文本文件作为日志文件。

    日志文件类代码如下：

    using System;using System.Collections.Generic;using System.Text;using System.IO;namespace LightningStroke{ public static class Log { public static string LogStartTime = "0000-00-00 00:00:00"; public static string LogTxtFileName = "0000_00_00.txt"; public static string LogLastDate = "0000-00-00"; public static string LogLastGpsTime = "00:00:00"; public static string LogLineNumber = "-999"; public static string LogPositionLineNumber = "-999"; public static string LogPositionIdentify = "-999"; public static string LogSDELineNumber = "-999"; public static string LogSDEInsertedLineNumber = "0"; public static int LogId = 0; public static string LogEndTime = "0000-00-00 00:00:00"; public static string LogResult = ""; public static string LogException = ""; public static string LogMsg; public static string logName; public static string pathName; /// <summary> /// 向日志文件写入记录 /// </summary> /// <param name="logTxtPath">保存日志的路径</param> /// <param name="LogMsg">日志信息</param> public static void WriteLog(string logTxtPath, string LogMsg) { //log文件名称 Log.logName = DateTime.Now.ToString("yyyy_MM") + ".log"; Log.pathName = logTxtPath + @"/" + Log.logName; // System.Windows.Forms.MessageBox.Show(File.Exists(Log.logName).ToString()); //文件存在时，返回False if (File.Exists(Log.logName)) { // System.IO.FileStream fs = File.Create(Log.pathName); //fs.Close(); FileStream fs = new FileStream(pathName, FileMode.Create, FileAccess.Write, FileShare.ReadWrite); fs.Close(); } StreamWriter sw = File.AppendText(pathName); sw.WriteLine(LogMsg); sw.Close(); } }}

    日志文件中获取程序执行变量的方式如下：

    /// <summary> /// 生成sde数据库中的点 /// </summary> /// <param name="pFeatureWorkspace">要素类工作空间</param> /// <param name="dt">DataTable</param> public void AddFeatureToFeatureClass(IFeatureWorkspace pFeatureWorkspace, DataTable dt) { ... ... //开始编辑 pWorkspaceEdit.StartEditing(false); pWorkspaceEdit.StartEditOperation(); IFeature pFeature; //Log LogSDELineNumber Log.LogSDELineNumber = dt.Rows.Count.ToString(); //不生成要素点时的LogSDEInsertedLineNumber LogID if (dt.Rows.Count == 0) { Log.LogSDEInsertedLineNumber = "0"; Log.LogId = 0; } ... ... //将IFeature对象添加到当前图层上 fr.WriteFeature(pFeature); //Log LogSDEInsertedLineNumber Log.LogSDEInsertedLineNumber = (i + 1).ToString(); //用来标识是否生成要素点的值 Log.LogId = ID; } //停止编辑 pWorkspaceEdit.StopEditOperation(); pWorkspaceEdit.StopEditing(true); //Log LogEndTime Log.LogEndTime = DateTime.Now.ToString(); }

    在生成要素点后将程序执行变量写入日志文件，代码如下：

    /// <summary> /// 生成要素点 /// </summary> private void ProcessFeature() { try { IWorkspace ws = sde.SDEWorkspaceFromPropertySet(sdeServer, sdeInstance, sdeUser, sdePassword, sdeDatabase, sdeVersion); IFeatureWorkspace pFeatureWorkspace = ws as IFeatureWorkspace; //获取要下载的文本文件名称 Log.LogTxtFileName = fileName; //将文本文件通过ftp下载到本地 ftpUpDown.onDownLoadProgress += new FtpUpDown.dDownloadProgress(ftpUpDown_onDownLoadProgress); ftpUpDown.Download(ftpFilePath, fileName, localFilePath); //将未入库的文本行插入数据库 localPathFileName = localFilePath + @"/" + fileName; operation.onOperationProgress += new Operation.dOperationProgress(operation_onOperationProgress); operation.InsertAllToDatabase(localPathFileName); //将新入库的数据生成sde要素点 DataTable dt = operation.GetDataTable(strProvince); sde.onSdeFeatureProgress += new Sde.dSdeFeatureProgress(sde_onSdeFeatureProgress); sde.AddFeatureToFeatureClass(pFeatureWorkspace, dt); //标记已生成要素点的数据行，下次不再生成 operation.UpdateIdentifying(); //Log LogResult Log.LogResult = "执行成功！"; Log.LogException = ""; //界面进度显示 this.toolStripStatusLabel1.Visible = true; this.toolStripStatusLabel1.Text = "本次执行完毕！"; this.toolStripStatusLabel2.Visible = false; System.Threading.Thread.Sleep(5000); string timeExecute = ComputeExecuteTime(); this.toolStripStatusLabel1.Text = "下次执行时间：" + timeExecute; } catch (Exception ex) { Log.LogResult = "出现异常！"; Log.LogException = ex.ToString(); } finally { //日志处理 Log.LogMsg = "执行开始时间：" + Log.LogStartTime + " " + "下载文件名称：" + Log.LogTxtFileName + " " + "临时表最后记录：" + Log.LogLastDate + " " + Log.LogLastGpsTime + " " + "文本文件行数：" + Log.LogLineNumber + " " + "定位行号：" + Log.LogPositionLineNumber + " " + "定位标记：" + Log.LogPositionIdentify + " " + "要添加要素点数" + Log.LogSDELineNumber + " " + "新添加要素点数：" + Log.LogSDEInsertedLineNumber + " " + "已生成要素点的ID:" + Log.LogId + " " + "执行结果：" + Log.LogResult + " " + "结束时间：" + Log.LogEndTime + "/r/n"; if (Log.LogException != "") { Log.LogMsg = Log.LogMsg + "/r/n" + Log.LogException + "/r/n" + "/r/n"; } Log.WriteLog(logTxtPath, Log.LogMsg); } }

    2011年4月份的日志文件名为：2011_04.log,如下所示：