jxl.Workbook book = Workbook.getWorkbook() 报错

Posted 2023-05-11

private List parseData(HttpServletRequest request)
throws FileUploadException, IOException, BiffException
DiskFileUpload upload = new DiskFileUpload();
upload.setHeaderEncoding("UTF-8");
upload.setSizeThreshold(1024 * 4);
List items = upload.parseRequest(request);
Iterator it = items.iterator();
List retList = null;
while (it.hasNext())
FileItem item = (FileItem) it.next();
// 是否是文件及文件是否为空
if (item.isFormField() || "".equals(item.getName()))
continue;
InputStream is = item.getInputStream();
jxl.Workbook book = Workbook.getWorkbook(is);
jxl.Sheet sheet = book.getSheet(0);
执行代码 ：jxl.Workbook book = Workbook.getWorkbook(is);
报错，java.lang.OutOfMemoryError: Java heap space ，求高手帮忙分析下，越详细越好，非常感谢！！！

参考技术A excle版本过高或者未关闭编辑软件

[Book]Reference Book

提取码：2022

Reference Book

• Java
• C / C++
• Programming Specification

Java

1. Head First Java(第二版）_中文版
2. Think in Java(第四版)_中文版
3. 实用JAVA教程：基于BLUEJ的对象优先方法(第3版)_翁恺
4. Java并发编程实战
5. Java并发编程的艺术
6. Java核心技术卷I - 基础知识第 10 版
7. 深入理解Java虚拟机JVM高级特性与最佳实践第3版(周志朋)

C / C++

1. C++程序设计_谭浩强
2. C语言程序设计（第3版）_何钦铭_颜晖

Programming Specification

1. C语言编程规范_华为
2. Java开发手册(嵩山版)