如何解决“预期的BEGIN_ARRAY但在第1行第1列的路径$为STRING" [英] how to solve "Expected BEGIN_ARRAY but was STRING at line 1 column 1 path $ "

问题描述

我在移动设备上运行应用程序时遇到问题，并且当我使用堆栈跟踪或调试选项运行错误时，没有错误，所以我不知道该怎么办 这是错误消息

I'm facing problem when I run the app on my mobile and when I run the error with stack trace or with debug option there is no error so I don't know what to do Here's the error message

错误:任务执行失败 ':app:transformClassesWithInstantRunForDebug'.

Error:Execution failed for task ':app:transformClassesWithInstantRunForDebug'.

java.lang.IllegalStateException:预期为BEGIN_ARRAY，但为STRING 在第1行第1列的路径上$ $

java.lang.IllegalStateException: Expected BEGIN_ARRAY but was STRING at line 1 column 1 path` $

推荐答案

这通常在您的模型期望JSON数组值但对String值感到惊讶从而引发异常时发生.您可以通过两种不同的方法解决此问题:

This usually happens when your model is expecting a JSON array value but was surprised by a String value so it threw an exception. You can solve this in two different ways:

1-编辑您的API响应，以返回一个空的JSON数组或其中仅包含一个值的JSON数组.我的意思是总是将您的响应值包装在JSON数组中.

1- Edit your API response to return an empty JSON array or a JSON array with only one value in it. I mean always wrap your response value in a JSON array.

2-编辑模型以接受所有数据类型，您可以使用Object作为此值的数据类型，然后将其强制转换为数组或单个值.

2- Edit your model to accept all data types, you can use Object as the data type for this value then cast it to an array or to a single value only.

希望这对您有所帮助，编码愉快！

Hope this helps, happy coding!

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