XLSX文件导出问题

描述

貢獻者指南

技術棧

java

領域

backendperformance

議題類型

research

難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。

3

預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。

half day

活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。

fresh

清晰度議題是否清楚說明預期改動、驗收標準和下一步。

mostly clear

前置要求

JavaOutputStream understandingExcel file format basics

新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。

45

研究方向

First, examine the EasyExcel source code, particularly the ExcelWriter and its write method to understand how data is flushed to the OutputStream. The issue likely arises because the XLSX format requires all sheet data to be written before finalizing the ZIP structure (due to the XML schema). To verify, look at the `write()` method in `com.alibaba.excel.ExcelWriter` and the `finish()` method. Consider whether streaming via a custom OutputStream that writes chunks as they come is feasible. Check if there are any open issues or discussions about streaming export in the repository. Suggest comparing with libraries like Apache POI that handle streaming differently.