课程中心，修改数字人和模板样式并加上空状态判断

du

2025-05-28 1fe6ba3743a6ae03471a1f7d61921d6aff86f8c3

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<configuration>
    <!-- 引用 Spring Boot 的 logback 基础配置 -->
    <include resource="org/springframework/boot/logging/logback/defaults.xml"/>
</configuration>