Spring JDBC

public int getUserTopicNum(final int userId) {
String sql = "{call P_GET_TOPIC_NUM(?,?)}";
//使用    Object execute(String callString, CallableStatementCallback action)接口
Object obj = jdbcTemplate.execute(sql,new CallableStatementCallback(){
public Object doInCallableStatement(CallableStatement cs) throws SQLException, DataAccessException {
cs.setInt(1,userId);
cs.registerOutParameter(2, Types.INTEGER);
cs.execute();
return new Integer(cs.getInt(2));
}
});
return ((Integer)obj).intValue();
}