java.lang.NoClassDefFoundError: org/apache/poi/hssf/usermodel/HSSFWorkbook
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java.lang.NoClassDefFoundError: org/apache/poi/hssf/usermodel/HSSFWorkbook
提问by link
java.lang.NoClassDefFoundError:org/apache/poi/hssf/usermodel/HSSFWorkbook
This is java web project. The java project is ok, but in web, I got this exception.
这是java web 项目。java 项目没问题，但是在 web 中，我遇到了这个异常。
Caused by: java.lang.ClassNotFoundException: org.apache.poi.hssf.usermodel.HSSFWorkbook
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
maven dependency :
Maven 依赖：
<!-- apahce poi -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.7</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-scratchpad</artifactId>
<version>3.7</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.7</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.7</version>
</dependency>
回答by Mathias Schwarz
You need to put the Apache POI files in the WEB-INF/lib folder on the server.
您需要将 Apache POI 文件放在服务器上的 WEB-INF/lib 文件夹中。
回答by Sergii Zagriichuk
Check .m2directory and try to find class HSSFWorkbookif this class is present, check lib folder of your web app and try to find the same.
检查.m2目录并尝试查找类（HSSFWorkbook如果存在此类），检查您的 Web 应用程序的 lib 文件夹并尝试找到相同的。
回答by Ran Adler
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.9</version>
</dependency>
