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getStatuses 时不时就会 throw null #96

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07ke opened this issue Aug 13, 2024 · 1 comment
Open

getStatuses 时不时就会 throw null #96

07ke opened this issue Aug 13, 2024 · 1 comment

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@07ke
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07ke commented Aug 13, 2024

getStatuses 时不时就会 throw null,这个是什么原因导致的?没有异常记录

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dosubot bot commented Aug 13, 2024

@07ke 你好!我是一个可以帮助你解决 bug、回答问题并成为贡献者的机器人。我可以帮你解决问题,直到人类维护者出现。

getStatuses 函数可能会返回 null 或抛出异常的原因可能有以下几种:

  1. 硬件或连接问题getStatuses 函数与通过串口连接的打印机进行交互。如果硬件或连接出现问题,可能会导致函数失败或返回 null [1][2]

  2. 状态字节解析错误getStatuses 函数依赖于从打印机接收的状态字节。如果在读取或解释这些字节时出现问题,也可能导致异常或 null[1][2]

  3. 缺乏错误处理机制:如果函数内部没有适当的错误处理或回退机制,遇到意外的 null 值或异常时可能会直接抛出错误 [1][2]

建议检查硬件连接的稳定性,并在代码中添加适当的错误处理和日志记录,以便更好地诊断和解决问题。

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