Question

我正在尝试对SQL Server 2012中的变量进行编码/解码。我能够解码该变量，但是当我尝试使用解码后的值对其进行编码时，它没有显示相同的值。

DECLARE @DecodedVal VARCHAR(500)
DECLARE @EncodedVal VARCHAR(500) 
DECLARE @NewDecodeVal VARCHAR(500)

 --//decode
SET @DecodedVal= N'SW5mb3JtYXRpb25zIHN1ciBsZXMgY29uZsOpcmVuY2VzIHTDqWzDqXBob25pcXVlcw=='

SET @EncodedVal = (
    SELECT CONVERT(VARCHAR(2000), CONVERT(XML, '<?xml version="1.0" encoding="UTF-8"?>' + CONVERT(VARCHAR(2000), CONVERT(XML, @DecodedVal).value('.', 'varbinary(max)'))))
    )

SELECT @EncodedVal

--//encode
SET @NewDecodeVal = (SELECT CAST(N'' AS XML).value('xs:base64Binary(xs:hexBinary(sql:column("bin")))', 'NVARCHAR(MAX)') Base64Encoding
FROM (  SELECT CAST(@EncodedVal AS VARBINARY(MAX)) AS bin) AS bin_sql_server_temp)

SELECT @NewDecodeVal

将字符串编码为UTF-8格式

0 个答案: