导入DTD约束文件错误 1. 打开file——Settings..(快捷键ctrl+alt+s); 2. 找到Languages&Frameworks——Schemas and DTDs 圈”2” : 将本地的DTD约束引入(不常用) 圈”3” : 将外部DTD约束(Url)引入 3. 导入外部资源 将需要导入的DTD资源Url配置并应用！！！ 相关文章：
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