尝试使用 investing.com 中的数据创建新闻专家

Question

找到下面附上的代码，于是ReadCBOE函数从investing.com中读取信息并保存到string str中，Update news函数再分析从ReadCBOE中得到的信息并存入相关数组中，代码为运行没有任何错误只是无法弄清楚为什么信息没有正确存储到数组中。 ps 相同的代码在 mt4 上完美运行

//---------------------------------------------------------------------+     
string ReadCBOE()
      {
       string cookie=NULL,headers;
       char post[],result[];     string TXT="";
       int res;
       string str;
    
       string google_url="http://ec.forexprostools.com/?columns=exc_currency,exc_importance&importance=1,2,3&calType=week&timeZone=15&lang=1";
       ResetLastError();
       int timeout=5000; 
       res=WebRequest("GET",google_url,cookie,NULL,timeout,post,0,result,headers);
       if(res==-1)
         {
          Print("WebRequest error, err.code  =",GetLastError());
          MessageBox("You must add the address 'http://ec.forexprostools.com/' in the list of allowed URL tab 'Advisors' "," Error ",MB_ICONINFORMATION);
         }
       else
         {
          int filehandle=FileOpen("news-log.html",FILE_WRITE|FILE_BIN|FILE_ANSI);
          if(filehandle!=INVALID_HANDLE)
            {
             FileWriteArray(filehandle,result,0,ArraySize(result));
             FileClose(filehandle);
             
             //------
             int file_handle=FileOpen("news-log.html",FILE_READ|FILE_BIN|FILE_ANSI);
             if(file_handle!=INVALID_HANDLE)
                {
                   str=FileReadString(file_handle,int(FileSize(file_handle)));
                   FileClose(file_handle);
                }
             else PrintFormat("Failed to open %s file, Error code = %d","news-log.html",GetLastError());
            }
         }
       return(str);
       }
    
        //-------------------------------------------------------+ 
           void UpdateNews()
              {
               string TEXT=ReadCBOE();      
               int sh = StringFind(TEXT,"pageStartAt>")+12;
               int sh2= StringFind(TEXT,"</tbody>");
               TEXT=StringSubstr(TEXT,sh,sh2-sh);
               sh=0;
               while(!IsStopped())
                 {
                  sh = StringFind(TEXT,"event_timestamp",sh)+17;
                  sh2= StringFind(TEXT,"onclick",sh)-2;
                  if(sh<17 || sh2<0)break;
                  NewsArr[0][NomNews]=StringSubstr(TEXT,sh,sh2-sh);
            
                  sh = StringFind(TEXT,"flagCur",sh)+10;
                  sh2= sh+3;
                  if(sh<10 || sh2<3)break;
                  NewsArr[1][NomNews]=StringSubstr(TEXT,sh,sh2-sh);
                  
                  sh = StringFind(TEXT,"title",sh)+7;
                  sh2= StringFind(TEXT,"Volatility",sh)-1;
                  if(sh<7 || sh2<0)break;
                  NewsArr[2][NomNews]=StringSubstr(TEXT,sh,sh2-sh);
                  if(StringFind(NewsArr[2][NomNews],"High")>=0 && !HighNews)continue;Print("Found");
                  if(StringFind(NewsArr[2][NomNews],"Moderate")>=0 && !MidleNews)continue;
                  if(StringFind(NewsArr[2][NomNews],"Low")>=0 && !LowNews)continue;
            
                  sh=StringFind(TEXT,"left event",sh)+12;
                  int sh1=StringFind(TEXT,"Speaks",sh);
                  sh2=StringFind(TEXT,"<",sh);
                  if(sh<12 || sh2<0)break;
                  if(sh1<0 || sh1>sh2)NewsArr[3][NomNews]=StringSubstr(TEXT,sh,sh2-sh);
                  else NewsArr[3][NomNews]=StringSubstr(TEXT,sh,sh1-sh);
            
                  NomNews++;
                  if(NomNews==300)break;
                 }
              }

Answer 1

尝试下面的代码，它应该适用于较大的字符串。

string ReadCBOE()
{
   string cookie=NULL,headers;
   char post[],result[];     string TXT="";
   int res;
   string str;

   string google_url="http://ec.forexprostools.com/?columns=exc_currency,exc_importance&importance=1,2,3&calType=week&timeZone=15&lang=1";
   ResetLastError();
   int timeout=5000; 
   res=WebRequest("GET",google_url,cookie,NULL,timeout,post,0,result,headers);
   if(res==-1)
   {
      Print("WebRequest error, err.code  =",GetLastError());
      MessageBox("You must add the address 'http://ec.forexprostools.com/' in the list of allowed URL tab 'Advisors' "," Error ",MB_ICONINFORMATION);
   }
   else
   {
      int filehandle=FileOpen("news-log.html",FILE_WRITE|FILE_BIN|FILE_ANSI);
      if(filehandle!=INVALID_HANDLE)
      {
         FileWriteArray(filehandle,result,0,ArraySize(result));
         FileClose(filehandle);
         //------
         int file_handle=FileOpen("news-log.html",FILE_READ|FILE_BIN|FILE_ANSI);
         if(file_handle!=INVALID_HANDLE)
         {
            do
            {
               ResetLastError();
               string Largestr=FileReadString(file_handle,4000);
               if(GetLastError()!=0) break;
               StringConcatenate(str,str,Largestr);
            }
            while(GetLastError()==0 && !FileIsEnding(file_handle));
            FileClose(file_handle);
         }
         else PrintFormat("Failed to open %s file, Error code = %d","news-log.html",GetLastError());
      }
   }
return(str);
}

尝试使用 investing.com 中的数据创建新闻专家

Trying to create a news expert using data from investing.com

mql5

mql