Karate用户咨询：日志频繁出现Thymeleaf警告是否需提交GitHub Issue？

其他Karate用户确实会碰到这类Thymeleaf警告，尤其是在生成测试报告的场景下。完全有必要在GitHub提交相关Issue，理由如下：

• 重复的警告信息会严重干扰日志排查，增加筛选有效内容的工作量
• 警告明确提示这些语法会在Thymeleaf未来版本中移除，若官方不及时更新内置模板，后续Karate升级依赖后可能出现模板渲染失败等问题
• 这是所有使用Karate的用户都会遇到的共性问题，提交Issue能推动官方统一修复，避免大家各自处理

警告核心问题梳理 #

这些警告指向Karate内置的karate-feature.html模板存在两处废弃用法：

• 未包装的片段表达式：比如"karate-posthog.html"这类写法，需替换为标准语法~{karate-posthog.html}
• 废弃的th:include属性：需改用th:insert属性替代

原始警告日志 #

10:45:44.828 [pool-2-thread-1] WARN  o.t.s.p.AbstractStandardFragmentInsertionTagProcessor - [THYMELEAF][pool-2-thread-1][karate-feature.html] Deprecated unwrapped fragment expression "karate-posthog.html" found in template karate-feature.html, line 15, col 15. Please use the complete syntax of fragment expressions instead ("~{karate-posthog.html}"). The old, unwrapped syntax for fragment expressions will be removed in future versions of Thymeleaf.
10:45:44.832 [pool-2-thread-1] WARN  o.t.s.p.AbstractStandardFragmentInsertionTagProcessor - [THYMELEAF][pool-2-thread-1][karate-feature.html] Deprecated unwrapped fragment expression "karate-leftnav.html" found in template karate-feature.html, line 31, col 14. Please use the complete syntax of fragment expressions instead ("~{karate-leftnav.html}"). The old, unwrapped syntax for fragment expressions will be removed in future versions of Thymeleaf.
10:45:44.836 [pool-2-thread-1] WARN  o.t.s.p.StandardIncludeTagProcessor - [THYMELEAF][pool-2-thread-1][karate-feature.html] Deprecated attribute {th:include,data-th-include} found in template karate-feature.html, line 74, col 16. Please use {th:insert,data-th-insert} instead, this deprecated attribute will be removed in future versions of Thymeleaf.
10:45:44.837 [pool-2-thread-1] WARN  o.t.s.p.AbstractStandardFragmentInsertionTagProcessor - [THYMELEAF][pool-2-thread-1][karate-feature.html] Deprecated unwrapped fragment expression "karate-step.html" found in template karate-feature.html, line 74, col 16. Please use the complete syntax of fragment expressions instead ("~{karate-step.html}"). The old, unwrapped syntax for fragment expressions will be removed in future versions of Thymeleaf.
10:45:44.869 [pool-2-thread-1] WARN  o.t.s.p.StandardIncludeTagProcessor - [THYMELEAF][pool-2-thread-1][karate-feature.html] Deprecated attribute {th:include,data-th-include} found in template karate-feature.html, line 74, col 16. Please use {th:insert,data-th-insert} instead, this deprecated attribute will be removed in future versions of Thymeleaf.
10:45:44.869 [pool-2-thread-1] WARN  o.t.s.p.AbstractStandardFragmentInsertionTagProcessor - [THYMELEAF][pool-2-thread-1][karate-feature.html] Deprecated unwrapped fragment expression "karate-step.html" found in template karate-feature.html, line 74, col 16. Please use the complete syntax of fragment expressions instead ("~{karate-step.html}"). The old, unwrapped syntax for fragment expressions will be removed in future versions of Thymeleaf.
10:45:44.890 [pool-2-thread-1] WARN  o.t.s.p.StandardIncludeTagProcessor - [THYMELEAF][pool-2-thread-1][karate-feature.html] Deprecated attribute {th:include,data-th-include} found in template karate-feature.html, line 74, col 16. Please use {th:insert,data-th-insert} instead, this deprecated attribute will be removed in future versions of Thymeleaf.
10:45:44.890 [pool-2-thread-1] WARN  o.t.s.p.AbstractStandardFragmentInsertionTagProcessor - [THYMELEAF][pool-2-thread-1][karate-feature.html] Deprecated unwrapped fragment expression "karate-step.html" found in template karate-feature.html, line 74, col 16. Please use the complete syntax of fragment expressions instead ("~{karate-step.html}"). The old, unwrapped syntax for fragment expressions will be removed in future versions of Thymeleaf.
10:45:44.914 [pool-2-thread-1] WARN  o.t.s.p.StandardIncludeTagProcessor - [THYMELEAF][pool-2-thread-1][karate-feature.html] Deprecated attribute {th:include,data-th-include} found in template karate-feature.html, line 74, col 16. Please use {th:insert,data-th-insert} instead, this deprecated attribute will be removed in future versions of Thymeleaf.
10:45:44.914 [pool-2-thread-1] WARN  o.t.s.p.AbstractStandardFragmentInsertionTagProcessor - [THYMELEAF][pool-2-thread-1][karate-feature.html] Deprecated unwrapped fragment expression "karate-step.html" found in template karate-feature.html, line 74, col 16. Please use the complete syntax of fragment expressions instead ("~{karate-step.html}"). The old, unwrapped syntax for fragment expressions will be removed in future versions of Thymeleaf.

内容的提问来源于stack exchange，提问作者j8d