There is no getter for property named 'null' in 'class com.etc.demo.entity.Shangjia

回答: 这个错误是由于在类com.etc.demo.entity.Shangjia中没有名为'null'的属性的getter方法引起的。\[3\]为了解决这个问题，你可以在该属性上添加一个getter方法，或者检查是否在代码中使用了错误的属性名。
#### 引用[.reference_title]
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