package com.iailab.module.model.mdk.common.exceptions; public class DataAccessException extends Exception { public final static String errorDataAccess = "æ•°æ®åº“访问失败"; private Throwable cause; public DataAccessException() { } public DataAccessException(String msg) { super(msg); } public DataAccessException(String msg, Throwable cause) { super(msg, cause); this.cause = cause; } }