SQL Server Stored Procedure Examples

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SQL Server
Stored Procedure Examples

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Checking the HTTP Response Status Code

Simple HTTP GET request to download the HTML of a web page. Check the HTTP response status code (i.e. 200, 404, etc) to see if it downloaded successfully.

Download Chilkat HTTP ActiveX

CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @http int
    EXEC @hr = sp_OACreate 'Chilkat.Http', @http OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int

    -- Any string unlocks the component for the 1st 30-days.
    EXEC sp_OAMethod @http, 'UnlockComponent', @success OUT, 'Anything for 30-day trial'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    -- 
DECLARE @url nvarchar(4000)

    SELECT @url = 'http://www.google.com/'
    -- Set the url = http://www.chilkatsoft.com/NothingHere.html
    -- To get a 404 response status code.

    -- Download the HTML page into a temp table.
    DECLARE @tmp TABLE (html ntext)
    INSERT INTO @tmp EXEC sp_OAMethod @http, 'QuickGetStr', NULL, @url

    DECLARE @status int

    EXEC sp_OAGetProperty @http, 'LastStatus', @status OUT

    IF @status = 200
      BEGIN
        PRINT 'status = 200, OK!'

        -- 
-- Insert a record into our HtmlPages table.
    -- url is a nvarchar(4000), the html column is ntext
    INSERT HtmlPages(url,html) SELECT @url, html FROM @tmp

      END
    ELSE
      BEGIN
        PRINT 'HTTP Response status = ' + STR(@status)

        -- Display the complete response header.
        EXEC sp_OAGetProperty @http, 'LastResponseHeader', @sTmp0 OUT
        PRINT @sTmp0
      END
END
GO

 

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