{ "msg": "nested exception is org.apache.ibatis.builder.BuilderException: The expression 'idList' evaluated to a null value.", "code": 500, "type": "error"
时间: 2023-08-12 15:05:23 浏览: 86
根据您提供的JSON和错误消息,看起来您遇到了一个`org.apache.ibatis.builder.BuilderException`异常,提示表达式`idList`的值为null。
这个错误通常出现在MyBatis框架中,当您尝试使用一个空值的表达式时会出现。根据错误消息,`idList`被评估为null,导致了问题的发生。
要解决这个问题,您需要确保在使用`idList`表达式之前,它被正确地初始化和赋值。检查您的代码,确保在使用这个表达式之前,`idList`被正确地设置为一个非空值。
如果您能提供更多的代码和上下文信息,我可以提供更具体的帮助。
相关问题
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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nested exception is org.apache.ibatis.builder.BuilderException: The expression 'ids' evaluated to a null value.
nested exception is org.apache.ibatis.builder.BuilderException: The expression 'ids' evaluated to a null value.这个错误通常是由于在Mybatis的配置文件中执行了一个空的表达式导致的。可以通过检查代码,确保在配置文件中正确设置了对应的参数值。一种可能的解决办法是在传递给Mybatis的查询语句中确保参数值不为空,或者在配置文件中添加一个判断条件来处理空值。 <span class="em">1</span><span class="em">2</span><span class="em">3</span>
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