分隔符替换方法 [英] Delimiter Replacement Approach

问题描述

我想创建一个方法，以取代与预期目标使用分隔符（HTML邮件，日志，数据库）。分隔符是不变的，所以我希望能够引用识别的名称映射到字符串值的对象（分号=，htmlLineBreak =＆LT; BR />等）。有没有更好的办法来做到这一点比这下面？

 公共静态类工具
{
    公共字符串ReplaceDelimiter（字符串内容
                     ，分隔符currentDelimiter，分隔符outputDelimiter）
    {
        返回content.Replace（currentDelimiter.ToString（）
                              ，outputDelimiter.ToString（））;
    }
}公共类分隔符
{
    公共常量字符串，逗号，;
    公共常量字符串分号=;
    公共常量字符串冒号=;
    公共常量字符串断行=\\ r \\ n;
    公共常量字符串htmlLineBreak =＆LT; BR /＆gt;中;
}
 

编辑以下意见：的结果
一个用例是，当我想记录一个错误到不同的目标，并在邮件发送相同的内容（格式不同）。该日志可能会去一个数据库列（要与分号分隔符键/值）或日志文件（希望分隔符是换行符）。电子邮件是HTML所以希望分隔符以＆lt更换; BR />。

下面将从具有几个参数，包括实际的异常一个测井方法的摘录：

 的StringBuilder delimitedMessage =新的StringBuilder（）;delimitedMessage.Append（日期=+ DateTime.Now.ToShortDateString（）+;）;
delimitedMessage.Append（时间=+ DateTime.Now.ToLongTimeString（）+;）;
delimitedMessage.Append（源=+ objException.Source.ToString（）修剪（）+;）;
delimitedMessage.Append（方法=+ objException.TargetSite.Name.ToString（）+）;
delimitedMessage.Append（做错事的方法=+方法名+;）;
delimitedMessage.Append（计算机=+ System.Environment.MachineName.ToString（）+;）;
delimitedMessage.Append（日志消息=+ +的LogMessage;）;
delimitedMessage.Append（异常错误=+ objException.Message.ToString（）修剪（）+;）;
delimitedMessage.Append（严重性=+ severity.ToString（）+;）;
delimitedMessage.Append（堆栈跟踪=+ objException.StackTrace.ToString（）修剪（）+;）;contentToLog = delimitedMessage.ToString（）;WriteToDb（contentToLog）;
WriteToLog（Utilities.ReplaceDelimiter（contentToLog，Delimiter.semicolon，Delimiter.lineBreak））;
SendEmail（Utilities.ReplaceDelimiter（contentToLog，Delimiter.semicolon，Delimiter.htmlLineBreak））;
 

解决方案

• code

   公共类分隔符{
      公共静态只读分隔符
          HtmlLineBreak =新的分隔符{
              VALUE =＆LT; BR /＆gt;中
          }，
          断行=新的分隔符{
              VALUE =\\ r \\ n
          }，
          分号=新的分隔符{
              值=;
          }，
          科隆=新的分隔符{
              值=：
          }，
          逗号=新的分隔符{
              值=，
          };    公共重写字符串的ToString（）{
          返回值;
      }    公共字符串值{
          得到;
          组;
      }
  }
   




• 测试

    VAR T = Utilities.ReplaceDelimiter（123 \\ r \\ n，Delimiter.LineBreak，Delimiter.HtmlLineBreak）;
  Debug.Print（{0}，T）;
   




• 输出

  
    

  123 LT; BR /＆GT;

  
  

I’d like to create a method to replace delimiters for the intended target use (html email, log, database). The delimiters are constant so I’d like to be able to reference a object that maps recognizable names to string values (semicolon = ";", htmlLineBreak = "<br/>", etc.). Is there a better means to do this than this below?

public static class Utilities
{
    public string ReplaceDelimiter(string content
                     , Delimiter currentDelimiter, Delimiter outputDelimiter)
    {
        return content.Replace(currentDelimiter.ToString()
                              , outputDelimiter.ToString());
    }
}

public class Delimiter
{
    public const string comma = ",";
    public const string semicolon = ";";
    public const string colon = ":";
    public const string lineBreak = "\r\n";
    public const string htmlLineBreak = "<br/>";
}

Edited following comments:
A use case would be when I want to log an error to different targets and send the same contents (formatted differently) in an email. The log may go to a database column (want key/value with semicolon delimiter) or log file (want delimiter to be line breaks). The email would be HTML so want the delimiter to be replaced with <br/>.

Below would be an excerpt from a logging method that has a few parameters including the actual Exception:

StringBuilder delimitedMessage = new StringBuilder();

delimitedMessage.Append("Date=" + DateTime.Now.ToShortDateString() + ";");
delimitedMessage.Append("Time=" + DateTime.Now.ToLongTimeString() + ";");
delimitedMessage.Append("Source=" + objException.Source.ToString().Trim() + ";");
delimitedMessage.Append("Method=" + objException.TargetSite.Name.ToString() + ";");
delimitedMessage.Append("Erring Method=" + methodName + ";");
delimitedMessage.Append("Computer=" + System.Environment.MachineName.ToString() + ";");
delimitedMessage.Append("Log Message=" + logMessage + ";");
delimitedMessage.Append("Exception Error=" + objException.Message.ToString().Trim() + ";");
delimitedMessage.Append("Severity=" + severity.ToString() + ";");
delimitedMessage.Append("Stack Trace=" + objException.StackTrace.ToString().Trim() + ";");

contentToLog = delimitedMessage.ToString();

WriteToDb(contentToLog);
WriteToLog(Utilities.ReplaceDelimiter(contentToLog, Delimiter.semicolon, Delimiter.lineBreak));
SendEmail(Utilities.ReplaceDelimiter(contentToLog, Delimiter.semicolon, Delimiter.htmlLineBreak));

解决方案

• Code

  public class Delimiter {
      public static readonly Delimiter
          HtmlLineBreak=new Delimiter {
              Value="<br/>"
          },
          LineBreak=new Delimiter {
              Value="\r\n"
          },
          Semicolon=new Delimiter {
              Value=";"
          },
          Colon=new Delimiter {
              Value=":"
          },
          Comma=new Delimiter {
              Value=","
          };
  
      public override String ToString() {
          return Value;
      }
  
      public String Value {
          get;
          set;
      }
  }
  

• Test

  var t=Utilities.ReplaceDelimiter("123\r\n", Delimiter.LineBreak, Delimiter.HtmlLineBreak);
  Debug.Print("{0}", t);
  

• Output

  123<br/>

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