DataSource连接失败常见异常捕获

捕获SQLException异常，并对常见的异常进行特殊处理：

private static Boolean sqlTest(DataSource dataSource) {
        try {
            dataSource.setLoginTimeout(5);
            dataSource.getConnection().getClientInfo();
        }catch (SQLException e) {
            if(e.getCause() instanceof CJCommunicationsException){
                //S100
                CJCommunicationsException cjCommunicationsException = (CJCommunicationsException)e.getCause();
                System.out.println("错误码："+cjCommunicationsException.getSQLState());
                System.out.println("错误信息："+cjCommunicationsException.getMessage());
            }else if(e.getCause() instanceof CJException){
                //42000，28000
                CJException cjException = (CJException)e.getCause();
                System.out.println("错误码："+cjException.getSQLState());
                System.out.println("错误信息："+cjException.getMessage());
            }
            e.printStackTrace();
            return false;
        }
        return true;
    }

标签：CJException,捕获,System,getCause,DataSource,println,28000,连接,out
来源： https://blog.csdn.net/qq_37252429/article/details/117002617