怎么实现参数类型是List的存储过程

  --定义一个与list中各元素的数据类型相同的数据库对象   CREATE TYPE AOBJECT AS OBJECT(          aaaa          NUMBER(8),          bbbb         NUMBER(8)        )     --定义一个list数据库对象       CREATE TYPE ALIST AS VARRAY(100) OF AOBJECT         

   public static long addRecords(ArrayList list) {       Connection con = null;       CallableStatement stmt = null;       int backVal = 0;       try {        con = pool.getConnection();        if (con != null) {         ARRAY aArray = getArray(con, "AOBJECT","ALIST", list);//该函数调用的第二三个参数必须大写         stmt = con.prepareCall("{call produce1(?,?)}"); //调用存储过程         ((OracleCallableStatement) stmt).setARRAY(1, aArray);         stmt.registerOutParameter(2, java.sql.Types.INTEGER);         stmt.execute();         backVal = stmt.getInt(2);        }        } catch (Exception e) {        ....       } finally {        ....//释放数据库连接       }       return backVal;      }         private static ARRAY getArray(Connection con, String OracleObj,       String Oraclelist, ArrayList objlist) throws Exception {       ARRAY list = null;       if (objlist != null && objlist.size() > 0) {        StructDescriptor structdesc = new StructDescriptor(OracleObj, con);        STRUCT[] structs = new STRUCT[objlist.size()];        Object[] result = new Object[0];        for (int i = 0; i < objlist.size(); i++) {         result = new Object[2];//数组大小应和你定义的数据库对象(AOBJECT)的属性的个数         result[0] = new Integer(..);  //将list中元素的数据传入result数组         result[1] = new Integer(..);  //                  structs[i] = new STRUCT(structdesc, con, result);        }        ArrayDescriptor desc = ArrayDescriptor.createDescriptor(Oraclelist,          con);        list = new ARRAY(desc, con, structs);       } // if       return list;      }