mybatis调用存储过程并且有多个返回output值

<select id="callgetId" parameterType="java.util.HashMap" statementType="CALLABLE">
    exec sp_GetID #{RemoteId,mode=IN,jdbcType=NVARCHAR},
   #{cAcc_Id,mode=IN,jdbcType=NVARCHAR},
#{cVouchType,mode=IN,jdbcType=NVARCHAR},#{iAmount,mode=IN,jdbcType=INTEGER},
#{iFatherId,mode=OUT,jdbcType=INTEGER},#{iChildId,mode=OUT,jdbcType=INTEGER}
  </select>

    Map<String,Object> paraMap=new HashMap<String, Object>();
        paraMap.put("RemoteId", "00");
        paraMap.put("cAcc_Id", "005");
        paraMap.put("cVouchType", "DISPATCH");
        paraMap.put("iAmount", 1);
        paraMap.put("iFatherId", null);
        paraMap.put("iChildId", null);
        
        int maxid;
        
        dispatchlistDao.callgetId(paraMap); //注意：这里并非是返回值，执行完存储过程后，
　　　　//后两个output值自动会写进去的。一直没有明白，所以在配置的xml不需要设置resultType
        
        maxid=Integer.parseInt(paraMap.get("iFatherId").toString());