FreeMarker & Mybatis & Basic OGNL expressions

Basic OGNL expressions
OGNL - Apache Commons OGNL - Language Guide
https://commons.apache.org/proper/commons-ognl/language-guide.html

mybatis：org.apache.ibatis.ognl.ParseException: Encountered OR at line 1, column 26错误解决_Java_caidie_huang的博客-CSDN博客
https://blog.csdn.net/caidie_huang/article/details/81539466

ognl.ExpressionSyntaxException: Malformed OGNL expression: _java_Roger★L☆M☆J★ -CSDN博客
https://blog.csdn.net/mmm123lmj/article/details/4659505

使用MyBatis动态SQL表达式时遇到的“坑” - 简书
https://www.jianshu.com/p/91ed365c0fdd

mybatis 中 if-test 判断大坑 - xuanm - 博客园
https://www.cnblogs.com/grasp/p/11268049.html

mybatis mapper.xml 中查询出的status 赋值给枚举类型要装换_java_you901022的专栏-CSDN博客
https://blog.csdn.net/you901022/article/details/45564473