一、报错信息

org.thymeleaf.exceptions.TemplateInputException: An error happened during template parsing (template: "class path resource [templates/ss/add.html]

org.thymeleaf.exceptions.TemplateInputException：模板解析期间发生错误（模板：“类路径资源[templates /ss/ add.html]

org.attoparser.ParseException: (Line = 35, Column = 89) Malformed markup: Attribute "name" appears more than once in element

org.attoparser.ParseException ：（行= 35，列= 89）格式错误的标记：属性“名称”在元素中出现多次

二、解决

Attribute "name" appears more than once in element

情况有很多种，个人的是name多写了一个，记录下，欢迎补充。