SQL Server

HTTP Download any Type of File (binary or text)

See more HTTP Examples

The Download method can download any file type, whether binary (e.g., .zip, .pdf) or text (.xml, .txt), without distinction. It streams the file byte-for-byte from the web server exactly as received. This same process applies to web pages: providing a URL typically viewed in a browser downloads the server's delivered HTML to a file. SQL Server

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    -- This example requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    DECLARE @http int
    EXEC @hr = sp_OACreate 'Chilkat.Http', @http OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OASetProperty @http, 'KeepResponseBody', 1

    -- Download a .zip
    DECLARE @localFilePath nvarchar(4000)
    SELECT @localFilePath = '/temp/hamlet.zip'
    EXEC sp_OAMethod @http, 'Download', @success OUT, 'https://www.chilkatsoft.com/hamlet.zip', @localFilePath
    DECLARE @statusCode int
    EXEC sp_OAGetProperty @http, 'LastStatus', @statusCode OUT
    IF @success = 0
      BEGIN
        IF @statusCode = 0
          BEGIN
            -- Unable to either send the request or get the response.
            EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
            PRINT @sTmp0
          END
        ELSE
          BEGIN
            -- We got a response, but the status code was not in the 200s

            PRINT 'Response status code: ' + @statusCode
            -- Examine the response body.

            PRINT 'Response body:'
            EXEC sp_OAGetProperty @http, 'LastResponseBody', @sTmp0 OUT
            PRINT @sTmp0
          END

        PRINT 'Download failed.'

      END
    ELSE
      BEGIN

        PRINT 'Download success, response status = ' + @statusCode
      END

    -- Download an XML file:
    SELECT @localFilePath = '/temp/hamlet.xml'
    EXEC sp_OAMethod @http, 'Download', @success OUT, 'https://www.chilkatsoft.com/hamlet.xml', @localFilePath
    -- ...
    -- Check for errors in the same way as shown above..
    -- ...


    PRINT 'OK!'

    EXEC @hr = sp_OADestroy @http


END
GO