springmvc compile Error, jackson : No content to map due to end-of-input

[scofier]

[ERROR] Failed to execute goal com.github.kongchen:swagger-maven-plugin:3.1.1:generate (default) on project xxxx: com.fasterxml.jackson.databind.JsonMappingException: No content to map due to end-of-input
[ERROR] at [Source: UNKNOWN; line: 1, column: 1]
[ERROR] -> [Help 1]

i have exclude jackson dependence:

io.swagger swagger-core compile 1.5.3 javax.ws.rs jsr311-api com.fasterxml.jackson.core jackson-core com.fasterxml.jackson.core jackson-databind

the detail error info :

org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal com.github.kongchen:swagger-maven-plugin:3.1.1:generate (default) on project rpc-dubbo: com.fasterxml.jackson.databind.JsonMappingException: No content to map due to end-of-input at [Source: UNKNOWN; line: 1, column: 1] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80) at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288) at org.apache.maven.cli.MavenCli.main(MavenCli.java:199) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) Caused by: org.apache.maven.plugin.MojoFailureException: com.fasterxml.jackson.databind.JsonMappingException: No content to map due to end-of-input at [Source: UNKNOWN; line: 1, column: 1] at com.github.kongchen.swagger.docgen.mavenplugin.ApiDocumentMojo.execute(ApiDocumentMojo.java:93) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207) ... 20 more Caused by: com.github.kongchen.swagger.docgen.GenerateException: com.fasterxml.jackson.databind.JsonMappingException: No content to map due to end-of-input at [Source: UNKNOWN; line: 1, column: 1] at com.github.kongchen.swagger.docgen.mavenplugin.SecurityDefinition.getDefinitions(SecurityDefinition.java:46) at com.github.kongchen.swagger.docgen.mavenplugin.SpringMavenDocumentSource.loadDocuments(SpringMavenDocumentSource.java:51) at com.github.kongchen.swagger.docgen.mavenplugin.ApiDocumentMojo.execute(ApiDocumentMojo.java:72) ... 22 more Caused by: com.fasterxml.jackson.databind.JsonMappingException: No content to map due to end-of-input at [Source: UNKNOWN; line: 1, column: 1] at com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:148) at com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:3110) at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3051) at com.fasterxml.jackson.databind.ObjectMapper.readTree(ObjectMapper.java:1802) at com.github.kongchen.swagger.docgen.mavenplugin.SecurityDefinition.getDefinitions(SecurityDefinition.java:34) ... 24 more

[igracia]

@scofier Ever found a solution for this? Is it your resource or a conflict in pom dependencies?

[lakshgupta]

I am also running into the same problem.

* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':generateSwaggerDocumentation'.
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
        at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
        at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)
        at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
        at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:52)
        at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
        at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
        at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
        at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:233)
        at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:215)
        at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:74)
        at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:55)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:32)
        at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:113)
        at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)
        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
        at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:23)
        at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:43)
        at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:30)
        at org.gradle.initialization.DefaultGradleLauncher$4.run(DefaultGradleLauncher.java:186)
        at org.gradle.internal.Factories$1.create(Factories.java:22)
        at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
        at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:53)
        at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:183)
        at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:33)
        at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:112)
        at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:106)
        at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
        at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:63)
        at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:106)
        at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:92)
        at org.gradle.launcher.exec.GradleBuildController.run(GradleBuildController.java:66)
        at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)
        at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
        at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:41)
        at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:26)
        at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:79)
        at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:51)
        at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:59)
        at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
        at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:47)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
        at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
        at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
        at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74)
        at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72)
        at org.gradle.util.Swapper.swap(Swapper.java:38)
        at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
        at org.gradle.launcher.daemon.server.exec.LogAndCheckHealth.execute(LogAndCheckHealth.java:55)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
        at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
        at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
        at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:72)
        at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
        at org.gradle.launcher.daemon.server.exec.HintGCAfterBuild.execute(HintGCAfterBuild.java:44)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
        at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50)
        at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:293)
        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
        at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
Caused by: org.gradle.api.GradleException: com.fasterxml.jackson.databind.JsonMappingException: No content to map due to end-of-input
 at [Source: UNKNOWN; line: 1, column: 0]
        at com.benjaminsproule.swagger.gradleplugin.GenerateSwaggerDocsTask.generateSwaggerDocuments(GenerateSwaggerDocsTask.groovy:57)
        at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)
        at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.doExecute(DefaultTaskClassInfoStore.java:136)
        at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:129)
        at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:118)
        at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:623)
        at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:606)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
        ... 68 more
Caused by: com.github.kongchen.swagger.docgen.GenerateException: com.fasterxml.jackson.databind.JsonMappingException: No content to map due to end-of-input
 at [Source: UNKNOWN; line: 1, column: 0]
        at com.github.kongchen.swagger.docgen.mavenplugin.SecurityDefinition.getDefinitions(SecurityDefinition.java:43)
        at com.github.kongchen.swagger.docgen.mavenplugin.SpringMavenDocumentSource.loadDocuments(SpringMavenDocumentSource.java:54)
        at com.github.kongchen.swagger.docgen.mavenplugin.SpringMavenDocumentSource$loadDocuments.call(Unknown Source)
        at com.benjaminsproule.swagger.gradleplugin.GenerateSwaggerDocsTask.processSwaggerPluginExtension(GenerateSwaggerDocsTask.groovy:86)
        at com.benjaminsproule.swagger.gradleplugin.GenerateSwaggerDocsTask.generateSwaggerDocuments(GenerateSwaggerDocsTask.groovy:54)
        ... 76 more
Caused by: com.fasterxml.jackson.databind.JsonMappingException: No content to map due to end-of-input
 at [Source: UNKNOWN; line: 1, column: 0]
        at com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:270)
        at com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:3838)
        at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3783)
        at com.fasterxml.jackson.databind.ObjectMapper.readTree(ObjectMapper.java:2321)
        at com.github.kongchen.swagger.docgen.mavenplugin.SecurityDefinition.getDefinitions(SecurityDefinition.java:31)
        ... 80 more

[ajchan11]

anyone ever figure out a solution to this?

[JyotirmoyVS]

It took me 6hrs to find the mistake there is a setting in the default example as
<securityDefinition>
<json>/securityDefinition.json</json>
</securityDefinition>

It was silly not to check the logs com.github.kongchen.swagger.docgen.mavenplugin.SecurityDefinition.getDefinitions(SecurityDefinition.java:31)

Just comment off that part.
As a fix to code there should be a file not exist check before the call

Updates:
Have proposed a fix in #860