多个版本使用 List header 批量写入出现异常

[lwenxu]

关联的ISSUE

#2189

问题描述&解决

在使用 List 作为 header 时com.alibaba.excel.write.property.ExcelWriteHeadProperty#ExcelWriteHeadProperty 会做相关表头的样式设置，但是 List 方式构造的 header 无法通过 field 加载注解上的样式，会产生 NPE。

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