nested exception is org.apache.ibatis.builder.BuilderException: The expression 'array' evaluated to a null value.

引用\[1\]:异常信息： nested exception is org.apache.ibatis.builder.BuilderException: Error evaluating expression 'ides'. Return value (806) was not iterable. 引用\[2\]:nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML lo 引用\[3\]:在基于微服务架构风格的项目开发过程中，为了提高快速开发的目的，提高开发效率，集成了 MyBatisPlus，对于 MyBatisPlus 封装的 CRUD API 接口已经非常强大了，但是有时还是需要使用其动态 SQL 的拼接，在编写动态 SQL 时遇到一个梗，异常信息：“异常信息:nested exception is org.apache.ibatis.builder.BuilderException: Error evaluating expression 'employee.startDate != null and employee.endDate ! = null'. Cause: org.apache.ibatis.ognl.ExpressionSyntaxException: Malformed OGNL expression: employee.startDate != null and employee.endDate ! = null \[org.apache.ibatis.ognl.ParseException: Encountered " "!" "! "" at line 1, column 53. ”， 。

问题: nested exception is org.apache.ibatis.builder.BuilderException: The expression 'array' evaluated to a null value.
回答: 这个异常信息表明在MyBatis中，表达式'array'的值为null，导致了BuilderException异常。\[1\]这可能是由于代码中的某个地方没有正确地初始化或赋值给'array'变量。要解决这个问题，你需要检查代码中涉及到'array'的部分，并确保它被正确地初始化或赋值。另外，你还可以使用调试工具来跟踪代码并找出导致'array'为null的具体原因。
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