报错：cvc-id. 3: A field of identity constraint 'tag-name-uniqueness' matched element 't

在写tld文件时发生一个无语的错误：

cvc-id. 3: A field of identity constraint 'tag-name-uniqueness' matched element 'taglib', but this element does not have a simple type. 

只需要将下面位置的"java"任意一个或多个字母改为大写就行：

错误消失：

 具体原因不明