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POHow can I make HTTP request from SQL server?
 

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  1. POHow can I make HTTP request from SQL server?
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    <p>I wanted to send an HTTP request from SQL server to Tomcat server. I have installed SQL server 2012 express and non .NET application in Tomcat server. I have gone through this like <a href="http://networkprogramming.wordpress.com/2010/09/01/make-a-http-request-from-sql-server/" rel="noreferrer">Make a HTTP request from SQL server</a></p> <p>As it says in the above article, "The COM object WinHttp.WinHttpRequest.5.1 must be installed on the server, some typical variations are WinHttp.WinHttpRequest.5". I have downloaded winhttp.zip from the <a href="http://www.dll-files.com/dllindex/dll-files.shtml?winhttp" rel="noreferrer">winhttp download link</a>, found winhttp.dll in the zip folder and pasted it in <code>C:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER2\MSSQL\Binn</code> as suggested in this <a href="http://msdn.microsoft.com/en-us/library/ms164653.aspx" rel="noreferrer">msdn link</a>.</p> <p>Following that same advice, I have executed following line in SSMS:</p> <pre><code>sp_addextendedproc 'GetHttp', 'C:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER2\MSSQL\Binn\winhttp.dll'; </code></pre> <p>I also executed the following code in SSMS as said in "Make an HTTP request from SQL server link":</p> <pre><code>Alter function GetHttp ( @url varchar(8000) ) returns varchar(8000) as BEGIN DECLARE @win int DECLARE @hr int DECLARE @text varchar(8000) EXEC @hr=sp_OACreate 'WinHttp.WinHttpRequest.5.1',@win OUT IF @hr &lt;&gt; 0 EXEC sp_OAGetErrorInfo @win EXEC @hr=sp_OAMethod @win, 'Open',NULL,'GET',@url,'false' IF @hr &lt;&gt; 0 EXEC sp_OAGetErrorInfo @win EXEC @hr=sp_OAMethod @win,'Send' IF @hr &lt;&gt; 0 EXEC sp_OAGetErrorInfo @win EXEC @hr=sp_OAGetProperty @win,'ResponseText',@text OUTPUT IF @hr &lt;&gt; 0 EXEC sp_OAGetErrorInfo @win EXEC @hr=sp_OADestroy @win IF @hr &lt;&gt; 0 EXEC sp_OAGetErrorInfo @win RETURN @text END </code></pre> <p>Then I get the error</p> <blockquote> <p>Msg 2010, Level 16, State 1, Procedure GetHttp, Line 2<br> Cannot perform alter on 'GetHttp' because it is an incompatible object type.</p> </blockquote> <p>I do not know how to call the function to send the HTTP request. I assume it is something like this <code>GetHttp('http://www.google.co.in/')</code>.</p> <p>What am I missing?</p>
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    1. CODon't. Just don't. This is not what SQL Server is meant for.
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    2. COThis is a classic "when you have a hammer, all you see is nails" concept, do NOT do this
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    3. CO@Mladen Prajdic my requirement is, there is two different databases in different servers(A and B) and one tomcat server's application. If there is any modification in DB A it sends http request to tomcat server's application, app in tomcat server do computation and store data in DB B. So here I need to call the application from sql server only, Since user dosen't have access to app of tomcat server.
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