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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"When use `@Inject`  the dao,will cause NullPointerException","articleBody":"my maven project is  was splited into two module：one is start which include service、controller etc。the other is about db info which defines **Entity** with tables。\r\n\r\nwhen project started ,we will get following  **Error messeges：**,but if everyting include in only one module, will be fine.\r\n\r\n```\r\n2019-03-14 10:34:35,895 INFO  a.a.ApiManager@[jobs-thread-4] - start compiling API book\r\n2019-03-14 10:34:36,259 WARN  a.a.ApiManager@[jobs-thread-4] - error generating sample data for type: interface java.util.List\r\n2019-03-14 10:34:36,391 WARN  a.j.Job@[jobs-thread-4] - error executing job compile-api-book\r\njava.lang.NullPointerException: null\r\n\tat act.db.ebean.EbeanDao.setEbean(EbeanDao.java:126)\r\n\tat act.db.ebean.EbeanDao.ebean(EbeanDao.java:81)\r\n\tat act.db.ebean.EbeanDao.dbService(EbeanDao.java:87)\r\n\tat act.db.ebean.EbeanDao.\u003cinit\u003e(EbeanDao.java:66)\r\n\tat act.db.ebean.EbeanService.defaultDao(EbeanService.java:156)\r\n\tat act.app.DbServiceManager.dao(DbServiceManager.java:178)\r\n\tat act.db.ebean.util.EbeanDaoLoader.load(EbeanDaoLoader.java:47)\r\n\tat act.db.ebean.util.EbeanDaoLoader.load(EbeanDaoLoader.java:33)\r\n\tat org.osgl.inject.Genie$7.get(Genie.java:945)\r\n\tat org.osgl.inject.Genie$8.get(Genie.java:987)\r\n\tat org.osgl.inject.Genie$FieldInjector.applyTo(Genie.java:467)\r\n\tat org.osgl.inject.Genie$10.get(Genie.java:1040)\r\n\tat org.osgl.inject.Genie$8.get(Genie.java:987)\r\n\tat org.osgl.inject.Genie.get(Genie.java:570)\r\n\tat org.osgl.inject.provider.LazyProvider.get(LazyProvider.java:45)\r\n\tat org.osgl.inject.Genie$8.get(Genie.java:987)\r\n\tat org.osgl.inject.Genie$WeightedProvider.get(Genie.java:443)\r\n\tat org.osgl.inject.Genie$FieldInjector.applyTo(Genie.java:467)\r\n\tat org.osgl.inject.Genie$10.get(Genie.java:1040)\r\n\tat org.osgl.inject.Genie$8.get(Genie.java:987)\r\n\tat org.osgl.inject.Genie.get(Genie.java:570)\r\n\tat act.inject.genie.GenieInjector.get(GenieInjector.java:76)\r\n\tat act.app.App.getInstance(App.java:1118)\r\n\tat act.util.ReflectedInvokerHelper.tryGetSingleton(ReflectedInvokerHelper.java:60)\r\n\tat act.handler.builtin.controller.impl.ReflectedHandlerInvoker.\u003cinit\u003e(ReflectedHandlerInvoker.java:354)\r\n\tat act.handler.builtin.controller.impl.ReflectedHandlerInvoker.createControllerAction(ReflectedHandlerInvoker.java:1177)\r\n\tat act.Act$Mode.createRequestHandler(Act.java:150)\r\n\tat act.handler.builtin.controller.RequestHandlerProxy.generateHandlers(RequestHandlerProxy.java:425)\r\n\tat act.handler.builtin.controller.RequestHandlerProxy.ensureAgentsReady(RequestHandlerProxy.java:349)\r\n\tat act.handler.builtin.controller.RequestHandlerProxy.actionHandler(RequestHandlerProxy.java:176)\r\n\tat act.apidoc.Endpoint.explore(Endpoint.java:323)\r\n\tat act.apidoc.Endpoint.\u003cinit\u003e(Endpoint.java:222)\r\n\tat act.apidoc.ApiManager$4.visit(ApiManager.java:193)\r\n\tat act.route.Router.visit(Router.java:225)\r\n\tat act.route.Router.visit(Router.java:228)\r\n\tat act.route.Router.visit(Router.java:228)\r\n\tat act.route.Router.accept(Router.java:184)\r\n\tat act.apidoc.ApiManager.load(ApiManager.java:188)\r\n\tat act.apidoc.ApiManager.load(ApiManager.java:133)\r\n\tat act.apidoc.ApiManager$1.run(ApiManager.java:94)\r\n\tat act.job.Job$4.apply(Job.java:442)\r\n\tat act.job.Job.doJob(Job.java:403)\r\n\tat act.job.Job.run(Job.java:338)\r\n\tat act.job.Job$LockableJobList.runSubJobs(Job.java:112)\r\n\tat act.job.Job$LockableJobList.runSubJobs(Job.java:93)\r\n\tat act.job.Job.runFollowingJobs(Job.java:423)\r\n\tat act.job.Job.run(Job.java:392)\r\n\tat act.job.JobManager$_SysEventListener.on(JobManager.java:477)\r\n\tat act.event.EventBus.callOn(EventBus.java:1354)\r\n\tat act.event.EventBus.callOn(EventBus.java:1376)\r\n\tat act.event.EventBus.callOn(EventBus.java:1406)\r\n\tat act.event.EventBus._emit(EventBus.java:1267)\r\n\tat act.event.EventBus.emit(EventBus.java:723)\r\n\tat act.app.App.emit(App.java:1282)\r\n\tat act.app.App$5.run(App.java:822)\r\n\tat act.job.Job$4.apply(Job.java:442)\r\n\tat act.job.Job.doJob(Job.java:403)\r\n\tat act.job.Job.run(Job.java:338)\r\n\tat act.job.Job$LockableJobList.runSubJobs(Job.java:112)\r\n\tat act.job.Job$LockableJobList.runSubJobs(Job.java:93)\r\n\tat act.job.Job.runPrecedenceJobs(Job.java:419)\r\n\tat act.job.Job.run(Job.java:330)\r\n\tat act.job.JobManager$_SysEventListener.on(JobManager.java:477)\r\n\tat act.event.EventBus.callOn(EventBus.java:1354)\r\n\tat act.event.EventBus.callOn(EventBus.java:1376)\r\n\tat act.event.EventBus.callOn(EventBus.java:1406)\r\n\tat act.event.EventBus._emit(EventBus.java:1267)\r\n\tat act.event.EventBus.emit(EventBus.java:723)\r\n\tat act.app.App.emit(App.java:1282)\r\n\tat act.app.DbServiceManager$1.run(DbServiceManager.java:77)\r\n\tat act.app.DbServiceManager$3.on(DbServiceManager.java:132)\r\n\tat act.app.DbServiceManager$3.on(DbServiceManager.java:126)\r\n\tat act.event.EventBus.callOn(EventBus.java:1354)\r\n\tat act.event.EventBus.callOn(EventBus.java:1376)\r\n\tat act.event.EventBus.callOn(EventBus.java:1411)\r\n\tat act.event.EventBus._emitWithOnceBus(EventBus.java:1327)\r\n\tat act.event.EventBus.emit(EventBus.java:891)\r\n\tat act.db.sql.SqlDbService$4.run(SqlDbService.java:142)\r\n\tat act.job.Job$4.apply(Job.java:442)\r\n\tat act.job.Job.doJob(Job.java:403)\r\n\tat act.job.Job.run(Job.java:338)\r\n\tat act.job.Job$LockableJobList.runSubJobs(Job.java:112)\r\n\tat act.job.Job$LockableJobList.runSubJobs(Job.java:93)\r\n\tat act.job.Job.runFollowingJobs(Job.java:423)\r\n\tat act.job.Job.run(Job.java:392)\r\n\tat act.job.JobManager$_SysEventListener.on(JobManager.java:477)\r\n\tat act.event.EventBus.callOn(EventBus.java:1354)\r\n\tat act.event.EventBus.callOn(EventBus.java:1376)\r\n\tat act.event.EventBus.callOn(EventBus.java:1406)\r\n\tat act.event.EventBus._emit(EventBus.java:1267)\r\n\tat act.event.EventBus.emit(EventBus.java:723)\r\n\tat act.app.App.emit(App.java:1282)\r\n\tat act.app.App$4.run(App.java:797)\r\n\tat act.job.JobManager$ContextualJob$1.apply(JobManager.java:529)\r\n\tat act.job.Job.doJob(Job.java:403)\r\n\tat act.job.Job.run(Job.java:338)\r\n\tat java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)\r\n\tat java.util.concurrent.FutureTask.run(FutureTask.java:266)\r\n\tat java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)\r\n\tat java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)\r\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\r\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\r\n\tat java.lang.Thread.run(Thread.java:748)\r\n```","author":{"url":"https://github.com/flyingbeecd","@type":"Person","name":"flyingbeecd"},"datePublished":"2019-03-14T02:53:57.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/21/act-ebean-java7/issues/21"}