FirePHP On ASP.NET

转自：http://www.cnblogs.com/xuzhibin/archive/2010/02/04/1664032.html

 

 

FirePHP是基于FireBug的一个扩展，可以用来在Firebug的console中方便的输出php的调试信息又不影响php程序的正常运行。很久之前就想找一个基于.NET的实现，今天无意中在网上见到个老外写了一个基于MVC ActionFilter的，觉得用来可作为日志调试的一部分，于是改之。

原理：将日志以header的形式输出。

图及真相：

修改之后的源码：

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Text;
using  System.Web.Script.Serialization;
using  System.Diagnostics;
using  System.Web;
namespace  DevTools
{
     public   class  FirePHP
    {
         private   static  FirePHP _FirePHP  =   null ;
         private   static  Dictionary < string ,  string >  _BaseHeaders;

         private   bool  _isEnabled  =   true ;
         private   int  logCounter  =   0 ;

         private   static   string  headerInitSlotName  =   " FirePHP.HeaderInit " ;

         static  FirePHP()
        {
            _BaseHeaders  =   new  Dictionary < string ,  string > ();
            _BaseHeaders.Add( " X-Wf-Protocol-1 " ,  " http://meta.wildfirehq.org/Protocol/JsonStream/0.2 " );
            _BaseHeaders.Add( " X-Wf-1-Plugin-1 " ,  " http://meta.firephp.org/Wildfire/Plugin/FirePHP/Library-FirePHPCore/0.2.0 " );
            _BaseHeaders.Add( " X-Wf-1-Structure-1 " ,  " http://meta.firephp.org/Wildfire/Structure/FirePHP/FirebugConsole/0.1 " );
        }

         private  FirePHP()
        {
        }

         public   static  FirePHP GetInstance()
        {
             if  (_FirePHP  ==   null )
            {
                _FirePHP  =   new  FirePHP();
            }

             return  _FirePHP;
        }

         private   static   bool  HeadersInit
        {
             get
            {
                 if  (HttpContext.Current.Items.Contains(headerInitSlotName))
                     return  ( bool )HttpContext.Current.Items[headerInitSlotName];
                 else
                     return   false ;
            }

             set
            {
                 if  (HttpContext.Current.Items.Contains(headerInitSlotName))
                    HttpContext.Current.Items[headerInitSlotName]  =  value;
                 else
                    HttpContext.Current.Items.Add(headerInitSlotName, value);
            }
        }

         public   void  SetEnabled( bool  enabled)
        {
            _isEnabled  =  enabled;
        }

         public   void  Debug( string  msg)
        {
            WriteLog( " DEBUG " , msg);
        }

         public   void  Log( string  msg)
        {
            WriteLog( " LOG " , msg);
        }

         public   void  Info( string  msg)
        {
            WriteLog( " INFO " , msg);
        }

         public   void  Warn( string  msg)
        {
            WriteLog( " WARN " , msg);
        }

         public   void  Error( string  msg)
        {
            WriteLog( " ERROR " , msg);
        }    

         private   void  WriteLog( string  logType,  string  msg)
        {
            StackFrame callStack  =   new  StackFrame( 2 ,  true );
            FirePHPLog log  =   new  FirePHPLog();

            log.logType  =  logType;
             // log.header = new { Type = logType, File = callStack.GetFileName(), Line = callStack.GetFileLineNumber() };
            log.header  =   new  { Type  =  logType, File  =   "" , Line  =   ""  };
            log.msg  =  msg;

            DumpLog(log);
            
        }

         public   void  Exception(Exception exception)
        {
            JavaScriptSerializer serializer  =   new  JavaScriptSerializer();
            StackFrame callStack  =   new  StackFrame( 1 ,  true );

            StackTrace stackTrace;
            FirePHPLog log  =   new  FirePHPLog();

            log.logType  =   " EXCEPTION " ;
            log.header  =   new  { Type  =   " EXCEPTION " , File  =  exception.Source, Line  =   1  };

             int  exceptionCount  =   0 ;
            Exception currentException  =  exception;

            var traceList  =   new  List < object > ();

             while  (currentException.InnerException  !=   null )
            {
                stackTrace  =   new  StackTrace(currentException,  true );
                currentException  =  exception.InnerException;
                exceptionCount ++ ;

                var trace  =   new  { file  =  currentException.Source, line  =  currentException.Source, function  =  currentException.Message, args  =   new   string [ 0 ] };
                traceList.Add(trace);
            }

             if  (exceptionCount  >   0 )
            {
                var trace  =   new   object [exceptionCount];
            }

            stackTrace  =   new  StackTrace(exception,  true );

            log.msg  =   new
            {
                Class  =   " Exception " ,
                Message  =  exception.Message,
                File  =  stackTrace.GetFrame( 0 ).GetFileName(),
                Line  =  stackTrace.GetFrame( 0 ).GetFileLineNumber(),
                Type  =   " throw " ,
                Trace  =  traceList.ToArray()
            };

            DumpLog(log);
        }

         public   void  Table( string  label,  string [][] table)
        {
            JavaScriptSerializer serializer  =   new  JavaScriptSerializer();
            StackFrame callStack  =   new  StackFrame( 1 ,  true );

            FirePHPLog log  =   new  FirePHPLog();

            log.logType  =   " TABLE " ;
             // log.header = new { Type = "TABLE", Label = label, File = callStack.GetFileName(), Line = callStack.GetFileLineNumber() };
            log.header  =   new  { Type  =   " TABLE " , Label  =  label, File  =   "" , Line  =   ""  };
            log.msg  =  table;

            DumpLog(log);
        }

         public   void  DumpLog(FirePHPLog log)
        {
             if  ( ! _isEnabled)
            {
                 return ;
            }
            HttpContext context  =  HttpContext.Current;

            Dictionary < string ,  string >  ret  =   new  Dictionary < string ,  string > ();
            JavaScriptSerializer serializer  =   new  JavaScriptSerializer();

            InitHeader(context.Response);

             string  json  =  String.Format( " [{0}, {1}] " , serializer.Serialize(log.header), serializer.Serialize(log.msg));

            context.Response.AppendHeader(String.Format( " X-Wf-1-1-1-{0} " , (logCounter  +   1 )), String.Format( " {0}|{1}| " , json.Length, json));
             if  (logCounter ++   >   9999 )
            {
                logCounter  =   0 ;
            }
        }

         private   static  Dictionary < string ,  string >  BaseHeaders()
        {
             return  _BaseHeaders;
        }

         ///   <summary>
         ///  Inits the header.
         ///   </summary>
         ///   <param name="response"> The response. </param>
         private   void  InitHeader(HttpResponse response)
        {
             if  (HeadersInit)
                 return ;

             foreach  (KeyValuePair < string ,  string >  keypair  in  FirePHP.BaseHeaders())
            {
                response.AppendHeader(keypair.Key, keypair.Value);
            }
            HeadersInit  =   true ;
        }
    }


     public   class  FirePHPLog
    {
         public   string  logType;
         public   object  header;  //  anonymous type
         public   object  msg;
    }
}

 

FirePHP官网：http://www.firephp.org/

调试环境：最新版本的Firefox+FireBug+FirePHP

PS:顺求PHP 的var_dump() C#版实现一个，如有同学知道，望告知。