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http://forum.springsource.org/archive/index.php/t-24915.html
View Full Version : SqlReturnResultSet vs. SqlOutParameter
I got some code from a co-worker that was doing the same thing, but connecting to MS SQLServer. I didn’t have his stored proc to look at for clues.
He was using SqlReturnResultSet:
declareParameter(new SqlReturnResultSet(“rs” new MessageResultExtractor(msgList)));
My Oracle stored proc accepts no inputs and returns a cursor. When I tried to use the code above I kept getting an error like “invalid number or type of arguments”. I looked at the API for SqlReturnResultSet, which states that it is: “Subclass of SqlOutParameter”. But looking at the inheritance stack it shows that it does not! So I figured I needed to declare an SqlOutParameter, which conveniently accepts a ResultSetExtractor. So I used:
declareParameter(new SqlOutParameter(“rs”, OracleTypes.CURSOR, new MessageResultExtractor(msgList))); and it worked!
Note that I had to use the OracleTypes.CURSOR, which I wasn’t sure would work.
I don’t know if there are ways of getting a resultset from an oracle stored procedure other than a cursor, or maybe there’s a way to use SqlReturnResultSet with a cursor, but the SqlOutParameter worked for me.
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注意：
在申明参数时应该按照sp的参数顺序，否则会报错：
PLS-00306: wrong number or types of arguments in call to
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