alibaba/easyexcel

关于CSV文件写入数值型文本精度补齐问题

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#4089 opened on Feb 25, 2025

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 (1 comment) (0 reactions) (0 assignees)Java (33,728 stars) (7,599 forks)batch import
help wanted

Description

在对CSV文件写入的时候，不足2位精度的需要用0做补齐，写入的是字符串：1.10，但是在打开CSV文件的时候（WPS,微软的excel），发现展示的是1.1。会把小数位数上的0舍弃掉。 请求如何解决这个问题。尝试过使用@NumberFormat("#0.00")注解，也同时尝试过使用DecimalFormat decimalFormat = new DecimalFormat("0.00#") 方式进行格式化到字符串，发现还是不行

Contributor guide

Tech stack
java
Domain
backenddata
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Javaeasyexcel
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
Investigate the CSV writing logic in easyexcel, specifically how cell values are converted to CSV strings. Look for the write method that handles String types and ensure that pre formatted strings are not altered. Check if there is a configuration option to preserve string formatting in CSV output. Test with a simple example using @NumberFormat and DecimalFormat to replicate the issue and find the root cause in the source code.