Assert翻译为中文为"断言",就是断定某一个实际的值就为自己预期想得到的,如果不一样就抛出异常。
Assert.notNull(Object object,"object is required"); // 对象非空
Assert.isTrue(Object object,"object must be true"); // 对象必须为true
Assert.notEmpty(Collection collection,"collection must not be empty"); // 集合不能为空
Assert.hasLength(String text,"text must be specified"); // 字符不为null且字符长度不为0
Assert.hasText(String text,"text must not be empty"); // text不为null且必须至少包含一个非空的字符
Assert.isInstanceOf(Class class, Object object,"class must be of type[class]"); // object必须为class指定的类
原文:https://www.cnblogs.com/luoyu113/p/10942034.html