英文:
How to run java11 and jfx11 application on jre1.8
问题
我是一名计算机专业的学生，在一家公司的实习期间，我开发了一个小的Java软件，使用了JavaFX、Maven和apache.poi。
信息：该应用在Intellij上运行并且构建完美，我的问题涉及我在项目完成后生成的 *.jar 文件。
起初我使用了JDK 14和JFX 14，然而在执行（java –jar xx.jar）时，我遇到了一个错误，指出我在JAVA 58（JAVA 14）中编译程序，而我正在使用JRE 52（JAVA 8）。
因此，我修改了项目，改为使用JDK 11和JFX 11进行编译，现在我遇到了相同的错误，告诉我我正在JAVA 55（JAVA 11）中编译程序，而我正在使用JRE 52（JAVA 8）。
错误是因为我的PC默认使用jre1.8.0_251。
所以，我尝试以这种方式启动程序：“path_to_jdk11 \ bin \ java.exe” -jar xxx.jar，它可以正常工作。
这就是我的问题：
大多数用户使用Oracle网站上提供的JAVA版本，即jre1.8.0_251，这是可用的最新版本。然而，我的程序需要Java 11，在企业PC上无法部署，我想象。
我尝试将项目转换为Java 8，但在Maven和module.info.java方面出现了错误。
您是否有关于部署 *.jar 文件或将其部署为 .exe 文件的建议，以便可以在安装了jre1.8.0_251的用户上运行？
谨上
英文:
I am a computer student and I had during my internship in a company, develop a small java software using JavaFX, maven, and apache.poi.
Info: The application works on Intellij and builds perfectly, my problem concerns the *.jar that I generate once the project is finished.
I first used JDK 14 and JFX14, however at the time of the execution (java –jar xx.jar) I had an error saying that I was compiling the program in JAVA 58 (JAVA 14) and that I was using JRE 52 (JAVA 8).
So I modified the project to compile with JDK 11 and JFX 11, and I now have the same error telling me that I am compiling the program in JAVA 55 (JAVA 11) and that I was using JRE 52 (JAVA 8).
The error comes from the fact that my PC uses jre1.8.0_251 by default.
So I tried to launch the program in this way "path_to_jdk11 \ bin \ java.exe" -jar xxx.jar and it works.
So that's my problem:
The majority of users use the version of JAVA offered on the Oracle site, i.e. jre1.8.0_251 which is the latest version available. Outside my program requires Java 11, which is not deploying on corporate PCs, I imagine.
I tried to port my project to java 8 but I have errors with Maven and the module.info.java.
Do you have a tip for deploying the *.jar or deploying it in .exe so that it can run with a user who has jre1.8.0_251?
Respectfully
答案1
得分: 0
不要尝试构建一个臃肿的JAR文件。它在现代Java中不起作用。而是要构建一个真正的安装程序。这在JDK 14+中可以很容易地实现。只需按照这个教程 https://github.com/dlemmermann/JPackageScriptFX 进行操作，该教程涵盖了你所需的一切。其中使用了来自JDK 14的jpackage以及一些其他工具，还适用于非模块化项目。当你安装JDK 14时，确保设置好JAVA_HOME和PATH，以便所有工具可以找到正确版本的Java来进行构建。
英文:
Don't try to build a fat jar. It won't work with modern Java. Instead build a real installer. This can be done easily with JDK 14+. Just follow this tutorial https://github.com/dlemmermann/JPackageScriptFX which covers everything you need. This uses jpackage from JDK 14 and some other tools from it and also works with non-modularized projects. When you install JDK 14 just make sure you set JAVA_HOME and your PATH correctly so that all the tools find the correct version of Java for building.
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