问题
I'm trying to use jpackage to create an installer for my Java app. I'm on Windows 10 using OpenJDK 15.0.1. I can build an installer using
jpackage --input C:\MyApp --main-jar MyApp.jar
This basically works, but the installed application lacks resource files. According to the documentation, I should be able to build an app image, add my resource files to the image, then build the installer from the modified app image, as follows
jpackage --type app-image -n MyAppImage
copy <resource files> MyAppImage
jpackage --app-image MyAppImage --name MyAppInstaller
However, when I try jpackage --type app-image the process never terminates, and I have to kill it with control-C. When I examine the MyAppImage directory, it has a subdirectory app, which more or less mirrors the contents of C:\MyApp. Those contents include MyAppImage, which recursively gets copied into the app subdirectory, creating a potentially infinite set of directories: C:\MyApp\MyAppImage\app\MyAppImage\app\MyAppImage ...
If I manually delete app\MyAppImage and try jpackage --app-image, jpackage crashes with a java.io.IOException.
Has anyone else encountered this? What should I try?
回答1:
It turns out that the shell working directory makes a difference. The directory specified by --input should not be the same as the directory where the app image will be created.
I fixed the problem by creating a subdirectory C:\MyApp\build and copying MyApp.jar to build.
cd C:\MyApp
mkdir build
copy MyApp.jar build
jpackage --type app-image --n MyAppImage --input C:\MyApp\build --main-jar MyApp.jar
The recursive file-copying doesn't happen any more. But I'm still getting an error when running jpackage --app-image. I'll make that the subject of a subsequent post.
来源：https://stackoverflow.com/questions/64741275/jpackage-type-app-image-creates-infinite-recursive-directories