在配置idea中的SpringBoot项目的XML文件是文件头报错"White spaces are required between publicId and systemId" 和 “URI is not registered (Settings | Languages & Frameworks | Schemas and DTDs)”,其实容易解决。
出现White spaces are required between publicId and systemId时
解决方法：只需要将第二个双引号中的内容换行添加空格即可
"White spaces are required between publicId and systemId"错误解决了，但是又出现了"URI is not registered (Settings | Languages & Frameworks | Schemas and DTDs)"错误
解决方法：这时需要进行配置，来解决错误
- 复制报红的URI：“http://ibatis.apache.org/dtd/ibatis-3-mapper.dtd”
-
OK之后就这个样纸