ibatis oracle 调用存储过程 无法取得返回值
java 
  Map map = new HashMap();
  map.put("respCode", "100");
  getSqlMapClientTemplate().insert("getPhotos",map);
  return (String)map.get("respCode");
-----------------------
xml
  <parameterMap class="map" id="swapParameters">  
  <parameter property="respCode" javaType="java.lang.String" jdbcType="varchar2" mode="OUT"/>  
</parameterMap>  
  <procedure id="getPhotos" parameterMap="swapParameters" >
  {call getPhoto(?)}
  </procedure>
---------------------------
oracle sql
create or replace procedure getPhoto(respCode out varchar2)
as
begin
  respCode := 'aaa';
end;

===============================================================
org.springframework.jdbc.UncategorizedSQLException: SqlMapClient operation: encountered SQLException [  
--- The error occurred in com/rm/yjzq/dao/impl/sql/yjzq.xml.  
--- The error occurred while executing update procedure.  
--- Check the {call getPhoto(?)}.  
--- Check the output parameters (register output parameters failed).  
--- Cause: java.sql.SQLException: 无效的列类型: -99999999]; nested exception is com.ibatis.common.jdbc.exception.NestedSQLException:  
--- The error occurred in com/rm/yjzq/dao/impl/sql/yjzq.xml.  
--- The error occurred while executing update procedure.  
--- Check the {call getPhoto(?)}.  
--- Check the output parameters (register output parameters failed).  
--- Cause: java.sql.SQLException: 无效的列类型: -99999999
com.ibatis.common.jdbc.exception.NestedSQLException:  
--- The error occurred in com/rm/yjzq/dao/impl/sql/yjzq.xml.  
--- The error occurred while executing update procedure.  
--- Check the {call getPhoto(?)}.  
--- Check the output parameters (register output parameters failed).  
--- Cause: java.sql.SQLException: 无效的列类型: -99999999


求高手急救，在网上找了很多的例子，但是都不是正确的，只好发帖求教。
原来是一个入参一个出参，现在直接出参还是不对。


------解决方案--------------------
对java不是很了解。不过这里看起来，本来应该用一个变量来获取存储过程中传出参数respCode的值，但你的?这里不能代表一个变量吧
这个地方还不如改成函数
------解决方案--------------------
jdbcType="varchar2" 错了 jdbcType="VARCHAR"

jdbc里面没有varchar2 这里的VARCHAR不是数据库类型，是指java.sql.Types.VARCHAR
我的异常网推荐解决方案：oracle存储过程,http://www.aiyiweb.com/oracle-develop/177537.html