ignoHH的博客

Date date = new Date();Calendar calendarInsert = Calendar.getInstance();calendarInsert.setTime(date);int year = calendar.get(Calendar.YEAR);int month = calendar.get(Calendar.MONTH) + 1;int date = calendar.get(Calendar.DATE);

Failed to convert value of type ‘java.lang.String’ to required type ‘java.util.Date’springboot在controller层的GET接口中接受java.util.Date类型参数，发生Failed to convert value of type 'java.lang.String' to required type 'java.util.Date'错误需要在controller接口中格式化接收的Date，如图修改

shiro登陆时密码加盐哈希实现转载请注明出处实现废话不多说，开搞。此篇采用SHA-256哈希算法，采用其他算法只需要更改算法名字段。1.在shiro配置中添加对于HashedCredentialsMatcher的配置 @Bean public HashedCredentialsMatcher hashedCredentialsMatcher(){ HashedCredentialsMatcher hashedCredentialsMatcher = new Hashed

optional< T >官方文档A container object which may or may not contain a non-null value.If a value is present, isPresent() will return true and get() will return the value.一个可以通过isPresent()判断内部是否存在实例的容器，同时通过get()获取内部实例。通过使用Optional类可以避免因避免NullPointerE

jdk下载Oracle账号分享每次下载JDK都需要登录Oracle，注册和登录都是一件繁琐的事这里分享一个网站，提供了一些共享的jdk账号，????jdk共享账号