在Java17 模块项目使用出现的问题

[Ximeng0918]

当在Java17 模块项目使用的时候，因需要使用POI的功能，所以显示显式声明 requires org.apache.poi.ooxml;
显式声明后执行就会报如下错误
java.lang.NoClassDefFoundError: Could not initialize class cn.idev.excel.write.handler.DefaultWriteHandlerLoader

[psxjoy]

This issue isn't related to fastexcel's compatibility with JDK17.
IMO, the problem stems from using different versions of poi dependencies in the project,
which is leading to jar conflicts and resulting errors.

[Ximeng0918]

This issue isn't related to fastexcel's compatibility with JDK17. IMO, the problem stems from using different versions of poi dependencies in the project, which is leading to jar conflicts and resulting errors.

项目是一个小工具很小并没有使用很多依赖。
依赖列表：
javafx-controls：17.0.6
javafx-fxml：17.0.6
lombok：1.18.36
fastexcel：1.1.0
druid：1.2.24

module-info.java文件

module com.abc.tool {
    requires javafx.controls;
    requires javafx.fxml;

    requires static lombok;
    requires fastexcel.core;
    requires druid;
    requires java.sql;
    requires org.apache.poi.ooxml;  // 不加这个  运行没有问题

    opens com.abc.tool.util;
    opens com.abc.tool.model;
    opens com.abc.tool.views to javafx.fxml;
    exports com.abc.tool;
}

[psxjoy]

Could you provide a minimal reproducible demo? Ximeng0918 ***@***.***> 于2025年3月2日周日 23:07写道：

…

This issue isn't related to fastexcel's compatibility with JDK17. IMO, the problem stems from using different versions of poi dependencies in the project, which is leading to jar conflicts and resulting errors. 项目是一个小工具很小并没有使用很多依赖。 依赖列表： javafx-controls：17.0.6 javafx-fxml：17.0.6 lombok：1.18.36 fastexcel：1.1.0 druid：1.2.24 module-info.java文件 module com.abc.tool { requires javafx.controls; requires javafx.fxml; requires static lombok; requires fastexcel.core; requires druid; requires java.sql; requires org.apache.poi.ooxml; // 不加这个 运行没有问题 opens com.abc.tool.util; opens com.abc.tool.model; opens com.abc.tool.views to javafx.fxml; exports com.abc.tool; } — Reply to this email directly, view it on GitHub <#245 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACRXFDSOWQOSE5CT5QFIATT2SMNDXAVCNFSM6AAAAABYE5ICPGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMOJSG43TGNBQG4> . You are receiving this because you were assigned.Message ID: ***@***.***> [image: Ximeng0918]*Ximeng0918* left a comment (fast-excel/fastexcel#245) <#245 (comment)> This issue isn't related to fastexcel's compatibility with JDK17. IMO, the problem stems from using different versions of poi dependencies in the project, which is leading to jar conflicts and resulting errors. 项目是一个小工具很小并没有使用很多依赖。 依赖列表： javafx-controls：17.0.6 javafx-fxml：17.0.6 lombok：1.18.36 fastexcel：1.1.0 druid：1.2.24 module-info.java文件 module com.abc.tool { requires javafx.controls; requires javafx.fxml; requires static lombok; requires fastexcel.core; requires druid; requires java.sql; requires org.apache.poi.ooxml; // 不加这个 运行没有问题 opens com.abc.tool.util; opens com.abc.tool.model; opens com.abc.tool.views to javafx.fxml; exports com.abc.tool; } — Reply to this email directly, view it on GitHub <#245 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACRXFDSOWQOSE5CT5QFIATT2SMNDXAVCNFSM6AAAAABYE5ICPGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMOJSG43TGNBQG4> . You are receiving this because you were assigned.Message ID: ***@***.***>

[Ximeng0918]

Could you provide a minimal reproducible demo?

Ximeng0918 @.***> 于2025年3月2日周日 23:07写道：
…

https://github.com/liu-demo/fast-excel-demo.git

[psxjoy]

Your demo cannot run successfully. error log ```log java: java.lang.NoSuchFieldError: Class com.sun.tools.javac.tree.JCTree$JCImport does not have member field 'com.sun.tools.javac.tree.JCTree qualid' ``` Ximeng0918 ***@***.***> 于2025年3月3日周一 23:13写道：

…

Could you provide a minimal reproducible demo? Ximeng0918 *@*.***> 于2025年3月2日周日 23:07写道： … <#m_-5247434557022552676_> https://github.com/liu-demo/fast-excel-demo.git — Reply to this email directly, view it on GitHub <#245 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACRXFDUQIETDNLNDV675FID2SRWSPAVCNFSM6AAAAABYE5ICPGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMOJUG4ZDGOJSGM> . You are receiving this because you were assigned.Message ID: ***@***.***> [image: Ximeng0918]*Ximeng0918* left a comment (fast-excel/fastexcel#245) <#245 (comment)> Could you provide a minimal reproducible demo? Ximeng0918 *@*.***> 于2025年3月2日周日 23:07写道： … <#m_-5247434557022552676_> https://github.com/liu-demo/fast-excel-demo.git — Reply to this email directly, view it on GitHub <#245 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACRXFDUQIETDNLNDV675FID2SRWSPAVCNFSM6AAAAABYE5ICPGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMOJUG4ZDGOJSGM> . You are receiving this because you were assigned.Message ID: ***@***.***>

[Ximeng0918]

Your demo cannot run successfully. error log

java: java.lang.NoSuchFieldError: Class
com.sun.tools.javac.tree.JCTree$JCImport does not have member field
'com.sun.tools.javac.tree.JCTree qualid'

Ximeng0918 @.***> 于2025年3月3日周一 23:13写道：
…

项目的JDK使用的 Java17

[psxjoy]

IMO, the issue stems from the Java Module System's access restrictions. To be precise, the org.apache.poi.ooxml module hasn't exposed the classes and fields within the org.apache.poi.xssf.streaming package to the fastexcel.core module. This leads to an InaccessibleObjectException when reflection is used to access those fields.