快速、简洁、解决大文件内存溢出的java处理Excel工具

excel java jxl oom poi xls xlsx
8 Open Issues Need Help Last updated: Sep 12, 2025

Open Issues Need Help

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快速、简洁、解决大文件内存溢出的java处理Excel工具

Java
#excel#java#jxl#oom#poi#xls#xlsx

AI Summary: The task is to find a solution to reliably access the first row of data within a sheet using the EasyExcel library's `afterWorkbookDispose` method, or to find an alternative approach to dynamically adding dropdown constraints to specific columns based on header names, rather than fixed column indices. The current method fails when dealing with large Excel files because the first row data is unavailable at that stage of the writing process.

Complexity: 4/5
help wanted

快速、简洁、解决大文件内存溢出的java处理Excel工具

Java
#excel#java#jxl#oom#poi#xls#xlsx

AI Summary: The task is to debug a `NoSuchMethodError` in a Java application using the EasyExcel library for Excel processing. The error arises during Excel import and seems related to a missing method in `com.alibaba.excel.util.ClassUtils`. The solution likely involves resolving a dependency conflict or ensuring the correct EasyExcel version is used, potentially by checking the project's dependencies and comparing them to the EasyExcel documentation.

Complexity: 3/5
help wanted

快速、简洁、解决大文件内存溢出的java处理Excel工具

Java
#excel#java#jxl#oom#poi#xls#xlsx

快速、简洁、解决大文件内存溢出的java处理Excel工具

Java
#excel#java#jxl#oom#poi#xls#xlsx

AI Summary: Debug an EasyExcel 4.0.3 implementation that fails to read data from an ISO-8859-1 encoded Excel file. The issue is that the `MaterialInformationSunExport` objects are populated with null values, indicating a problem with data extraction. The task involves investigating the encoding mismatch between the project (UTF-8) and the Excel file (ISO-8859-1) as a potential cause, and correcting the EasyExcel configuration or data processing to correctly handle the encoding.

Complexity: 3/5
help wanted

快速、简洁、解决大文件内存溢出的java处理Excel工具

Java
#excel#java#jxl#oom#poi#xls#xlsx

AI Summary: The task is to debug an EasyExcel export issue where numerical data is not displaying correctly in Excel as a 'Number' format, instead showing as 'General' or 'Custom'. The provided code attempts to set the cell style to the 'Number' format using `CellStyle.setDataFormat((short) 2);`, but this is not working as expected. The solution requires investigating why the cell style is not being applied correctly by EasyExcel and finding a way to force the 'Number' format for exported numerical data.

Complexity: 3/5
help wanted

快速、简洁、解决大文件内存溢出的java处理Excel工具

Java
#excel#java#jxl#oom#poi#xls#xlsx

AI Summary: The task requires adapting the EasyExcel library to handle Excel export with multiple identical headers within a single sheet, based on a provided list of data. The solution needs to leverage EasyExcel's template functionality to achieve this efficiently.

Complexity: 4/5
help wanted

快速、简洁、解决大文件内存溢出的java处理Excel工具

Java
#excel#java#jxl#oom#poi#xls#xlsx

AI Summary: Debug a Java application using EasyExcel that experiences OutOfMemoryError (OOM) when processing a large Excel file with many sheets. The application uses EasyExcel's template filling functionality. The OOM occurs intermittently, sometimes working on the first run but failing after multiple executions. The task involves analyzing the provided code, identifying the memory leak or inefficient memory usage, and optimizing the code to prevent OOM, potentially involving techniques like batch processing and efficient data handling.

Complexity: 4/5
help wanted

快速、简洁、解决大文件内存溢出的java处理Excel工具

Java
#excel#java#jxl#oom#poi#xls#xlsx