Question

我创建了以下函数来从XML检索数据。我想从生成的XML中获取formatted_address。如何获得所需的结果？我得到了NULL值。我想只使用函数

获得所需的结果

CREATE FUNCTION [dbo].[GetLocation]
 (@latt VARCHAR(150), @lont VARCHAR(150)) 
 RETURNS varchar(max) 
 AS 
  BEGIN 
DECLARE @output NVARCHAR(MAX)
DECLARE @URL VARCHAR(8000) 
DECLARE @Response NVARCHAR(1024)
DECLARE @XML XML
DECLARE @Obj INT 
DECLARE @Result INT
DECLARE @HTTPStatus INT
DECLARE @ErrorMsg VARCHAR(MAX)
DECLARE @ConvertVar VARCHAR(8000)
DECLARE @lat VARCHAR(150) 
DECLARE @lon VARCHAR(150)

SET @lat = @latt
SET @lon = @lont

SET @URL ='https://maps.googleapis.com/maps/api/geocode/xml?latlng=23.56320001,46.66140002'

EXEC sp_OACreate 'MSXML2.XMLHttp', @obj OUT
EXEC sp_OAMethod @obj, 'open', NULL, 'GET', @URL, false
EXEC sp_OAMethod @Obj, 'setRequestHeader', NULL, 'Content-Type', 'application/x-www-form-urlencoded'
EXEC sp_OAMethod @Obj, send, NULL, ''
EXEC sp_OAGetProperty @obj, 'ResponseText', @Response OUTPUT

SET @Response = replace(@Response, '<?xml version="1.0" encoding="UTF-8" ?>', '')    
SET @XML = convert(xml,@Response)
SET @output = (SELECT   
                   T.c.value('formatted_address[1]','nvarchar(500)')                    
               FROM   
                   @XML.nodes('reversegeocode/result[1]') T(c))

RETURN @output
END

如何使用SQL Server从URL读取XML - 反向地理编码

0 个答案: