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原创 MySQL

mysql 基础 **启动：**service mysql start **关闭：**service mysql stop 设置root账户密码：/usr/bin/mysqladmin -u root password root **查看字符编码：**show variables like ‘%char%’; 设置编码： 修改my.cnf [mysql] default-character-set...

原创 多线程 run 方法下获取mapper对象

多线程 run 方法下获取mapper对象 AbstractApplicationContext ac = (AbstractApplicationContext) SpringContextUtil.getApplicationContext(); DeviceAlarmMapper deviceAlarmMapper = ac.getBean(DeviceAlarmMapper.class);...

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原创 文件下载/上传

文件下载 @RequestMapping("download") public void download(String fileName, HttpServletRequest req, HttpServletResponse resp) throws IOException { // 设置响应头 下载："attachment;filename="+fileName ...