Description

EasyExcel.read(file, new ReadListener() {
  @Override
  public void invoke(Object data, AnalysisContext context) {
	  System.out.println(data);
	  throw new ExcelAnalysisStopException();
  }
  
  @Override
  public void doAfterAllAnalysed(AnalysisContext context) {
  
  }
}).sheet().doRead();

Contributor guide

Tech stack

java

Domain

backendperformance

Issue type

performance

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.

1-2 days

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.

clear

Prerequisites

JavaEasyExcel basics

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

40

Research direction

Investigate how EasyExcel handles the ReadListener's invoke method and the ExcelAnalysisStopException. Look at the underlying SAX parsing to determine if the entire file is still being read even after the exception is thrown. Consider whether early termination of the input stream is possible, and if not, propose a mechanism to stop parsing immediately. The issue case involves a 160MB xlsx file taking 40 seconds to read only the first row; the goal is to minimize read time when only early rows are needed.