Heroku上的Spring Boot Gradle应用程序:无法访问jarfile
我有一个spring boot gradle app,我可以通过以下方式在我的PC上成功运行:
heroku local
当我去的时候它也可以成功部署在heroku上:
git push heroku master
这是我的结果:
Counting objects: 17, done. Delta compression using up to 4 threads. Compressing objects: 100% (5/5), done. Writing objects: 100% (9/9), 596 bytes | 0 bytes/s, done. Total 9 (delta 3), reused 0 (delta 0) remote: Compressing source files... done. remote: Building source: remote: remote: -----> Fetching set buildpack https://github.com/heroku/heroku-buildpack-gradle... done remote: -----> Gradle app detected remote: -----> Installing OpenJDK 1.8... done remote: -----> Building Gradle app... remote: WARNING: The Gradle buildpack is currently in Beta. remote: -----> executing ./gradlew build remote: :compileJavaNote: Some input files use unchecked or unsafe operations. remote: Note: Recompile with -Xlint:unchecked for details. remote: remote: :processResources remote: :classes remote: :jar remote: :bootRepackage remote: :assemble remote: :compileTestJava UP-TO-DATE remote: :processTestResources UP-TO-DATE remote: :testClasses UP-TO-DATE remote: :test UP-TO-DATE remote: :check UP-TO-DATE remote: :build remote: remote: BUILD SUCCESSFUL remote: remote: Total time: 11.935 secs remote: remote: -----> Discovering process types remote: Procfile declares types -> web remote: remote: -----> Compressing... done, 72.3MB remote: -----> Launching... done, v9 remote: https://myapp.herokuapp.com/ deployed to Heroku remote: remote: Verifying deploy... done. To https://git.heroku.com/myapp.git 6326429..291326d master -> master
但是当我尝试在heroku上访问它时,它会崩溃。 heroku日志说:
2015-12-11T17:05:46.096985+00:00 heroku[api]: Deploy 291326d by xxx@gmail.com 2015-12-11T17:05:46.097021+00:00 heroku[api]: Release v9 created by xxx@gmail.com 2015-12-11T17:05:46.378258+00:00 heroku[slug-compiler]: Slug compilation started 2015-12-11T17:05:46.378269+00:00 heroku[slug-compiler]: Slug compilation finished 2015-12-11T17:05:46.755655+00:00 heroku[web.1]: State changed from crashed to starting 2015-12-11T17:05:53.121398+00:00 heroku[web.1]: Starting process with command `java -Dserver.port=5000 -jar build/libs/myapp.jar` 2015-12-11T17:05:54.260741+00:00 app[web.1]: Error: Unable to access jarfile build/libs/myapp.jar 2015-12-11T17:05:54.784064+00:00 heroku[web.1]: State changed from starting to crashed 2015-12-11T17:05:54.773714+00:00 heroku[web.1]: Process exited with status 1 2015-12-11T17:05:54.788248+00:00 heroku[web.1]: State changed from crashed to starting
为什么Unable to access jarfile build/libs/myapp.jar
?
当我导航到本地PC上的该文件夹时,jar文件就在那里。
关于如何解决这个问题,我的想法已经不多了。
我最终在这里找到了一个非常有用的主题: 在Heroku上运行使用gradle构建的Spring应用程序
这对我的问题有所帮助 – 这个post似乎比Heroku的官方指南更详细。
您必须将以下代码添加到build.gradle文件中:
task stage(type: Copy, dependsOn: [clean, build]) { from jar.archivePath into project.rootDir rename { 'app.jar' } } stage.mustRunAfter(clean) clean << { project.file('app.jar').delete() }
然后,将您的Procfile指向app.jar:
web: java $JAVA_OPTS -jar app.jar
您无需为此修改舞台任务。
在gradle.build文件中,请确保为您构建的工件命名。
jar { baseName = 'app' version = '0.0.1' }
完成后,以及Procfile
的以下Procfile
,它应该运行正常。
web: java -Dserver.port=$PORT $JAVA_OPTS -jar build/libs/app-0.0.1.jar
我发现如果没有明确定义name,heroku似乎将这个工件命名为build-{buildNumber}.jar
,难怪它永远不会找到app.jar
。
此外,如果尚未设置,则需要设置构建包。
heroku config:set GRADLE_TASK="build"
根据文件 :
Gradle buildpack将自动检测Spring Boot和Ratpack Web框架的使用。
只有在需要时才应覆盖web
命令。 如果您使用的是Spring Boot,则根本不需要指定Procfile
。
删除它,无需进一步配置即可运行您的应用。