我修复了它。我的webapps目录是空的。因此，我安装了tomcat9 admin，并使用命令
我试图在tomcat中部署war文件，但无法做到。我使用的是tomcat9。我已经在端口9090上配置了tomcat9及其启动和活动，因为我正在为jenkins使用端口8080。我在本地Ubuntu 20.04中运行jenkins和tomcat9。当我运行我的詹金斯工作时，我会得到以下日志：
Started by user Pritish
Running as SYSTEM
Building in workspace /var/lib/jenkins/workspace/deploy-staging
Copied 1 artifact from "package" build number 5
[DeployPublisher][INFO] Attempting to deploy 1 war file(s)
[DeployPublisher][INFO] Deploying /var/lib/jenkins/workspace/deploy-staging/webapp/target/webapp.war to container Tomcat 9.x Remote with context null
ERROR: Build step failed with exception
org.codehaus.cargo.container.ContainerException: Failed to redeploy [/var/lib/jenkins/workspace/deploy-staging/webapp/target/webapp.war]
at org.codehaus.cargo.container.tomcat.internal.AbstractTomcatManagerDeployer.redeploy(AbstractTomcatManagerDeployer.java:176)
at hudson.plugins.deploy.CargoContainerAdapter.deploy(CargoContainerAdapter.java:81)
at hudson.plugins.deploy.CargoContainerAdapter$DeployCallable.invoke(CargoContainerAdapter.java:167)
at hudson.plugins.deploy.CargoContainerAdapter$DeployCallable.invoke(CargoContainerAdapter.java:136)
at hudson.FilePath.act(FilePath.java:1164)
at hudson.FilePath.act(FilePath.java:1147)
at hudson.plugins.deploy.CargoContainerAdapter.redeployFile(CargoContainerAdapter.java:133)
at hudson.plugins.deploy.PasswordProtectedAdapterCargo.redeployFile(PasswordProtectedAdapterCargo.java:95)
at hudson.plugins.deploy.DeployPublisher.perform(DeployPublisher.java:113)
at jenkins.tasks.SimpleBuildStep.perform(SimpleBuildStep.java:123)
at hudson.tasks.BuildStepCompatibilityLayer.perform(BuildStepCompatibilityLayer.java:80)
at hudson.tasks.BuildStepMonitor$3.perform(BuildStepMonitor.java:45)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:803)
at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:752)
at hudson.model.Build$BuildExecution.post2(Build.java:177)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:697)
at hudson.model.Run.execute(Run.java:1932)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:429)
Caused by: java.io.FileNotFoundException: http://localhost:9090/manager/text/list
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1896)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
at org.codehaus.cargo.container.tomcat.internal.TomcatManager.invoke(TomcatManager.java:577)
at org.codehaus.cargo.container.tomcat.internal.TomcatManager.list(TomcatManager.java:882)
at org.codehaus.cargo.container.tomcat.internal.TomcatManager.getStatus(TomcatManager.java:895)
at org.codehaus.cargo.container.tomcat.internal.AbstractTomcatManagerDeployer.redeploy(AbstractTomcatManagerDeployer.java:161)
... 19 more
java.io.FileNotFoundException: http://localhost:9090/manager/text/list
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1896)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
at org.codehaus.cargo.container.tomcat.internal.TomcatManager.invoke(TomcatManager.java:577)
at org.codehaus.cargo.container.tomcat.internal.TomcatManager.list(TomcatManager.java:882)
at org.codehaus.cargo.container.tomcat.internal.TomcatManager.getStatus(TomcatManager.java:895)
at org.codehaus.cargo.container.tomcat.internal.AbstractTomcatManagerDeployer.redeploy(AbstractTomcatManagerDeployer.java:161)
at hudson.plugins.deploy.CargoContainerAdapter.deploy(CargoContainerAdapter.java:81)
at hudson.plugins.deploy.CargoContainerAdapter$DeployCallable.invoke(CargoContainerAdapter.java:167)
at hudson.plugins.deploy.CargoContainerAdapter$DeployCallable.invoke(CargoContainerAdapter.java:136)
at hudson.FilePath.act(FilePath.java:1164)
at hudson.FilePath.act(FilePath.java:1147)
at hudson.plugins.deploy.CargoContainerAdapter.redeployFile(CargoContainerAdapter.java:133)
at hudson.plugins.deploy.PasswordProtectedAdapterCargo.redeployFile(PasswordProtectedAdapterCargo.java:95)
at hudson.plugins.deploy.DeployPublisher.perform(DeployPublisher.java:113)
at jenkins.tasks.SimpleBuildStep.perform(SimpleBuildStep.java:123)
at hudson.tasks.BuildStepCompatibilityLayer.perform(BuildStepCompatibilityLayer.java:80)
at hudson.tasks.BuildStepMonitor$3.perform(BuildStepMonitor.java:45)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:803)
at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:752)
at hudson.model.Build$BuildExecution.post2(Build.java:177)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:697)
at hudson.model.Run.execute(Run.java:1932)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:429)
Build step 'Deploy war/ear to a container' marked build as failure
Finished: FAILURE
sudo apt install tomcat9 tomcat9-admin重新安装了tomcat 9。然后，我使用sudo service tomcat9 restart重新启动了tomcat服务。以下是我在詹金斯的日志：
Started by user Pritish
Running as SYSTEM
Building in workspace /var/lib/jenkins/workspace/deploy-staging
Copied 1 artifact from "package" build number 5
[DeployPublisher][INFO] Attempting to deploy 1 war file(s)
[DeployPublisher][INFO] Deploying /var/lib/jenkins/workspace/deploy-staging/webapp/target/webapp.war to container Tomcat 9.x Remote with context null
[/var/lib/jenkins/workspace/deploy-staging/webapp/target/webapp.war] is not deployed. Doing a fresh deployment.
Deploying [/var/lib/jenkins/workspace/deploy-staging/webapp/target/webapp.war]
Finished: SUCCESS