mayday_sanshui的博客

在项目构建时报错：Unexpected lock protocol found in lock file. Expected 3, found 37.

Fragment not attached to an activity

谷歌浏览器报错：Not allowed to load local resource 原因及解决办法

跟着狂神学完了smm，想自己整合smbms的项目，没想到刚启动项目就报了500错误，找了两天bug，看了各路网友的帖子，最终找到了万恶之源：c3p0数据库连接的配置文件命名有问题！！报错内容如下：org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested except

问题描述：使用maven构建项目，把mybatis的配置文件直接放在dao文件夹下：测试运行时报错如下：java.lang.ExceptionInInitializerError at miao.dao.UserDaoTest.test1(UserDaoTest.java:15) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invok

问题描述：在使用jdbcTemplate.queryForObject()操作数据库时，系统报错如下：操作代码如下：@Override public boolean login(String uname, String pwd) { //声明变量标记是否登录成功 boolean flag=false; String sql="select username,password from tb_user where username=? and p

错误描述编写mybatis配置文档，测试使用mybatis操作数据库时，报如下错误java.lang.ExceptionInInitializerError at miao.dao.UserDaoTest.test1(UserDaoTest.java:15) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMetho