解决jenkins部署TomcatManagerException问题

在tomcat8.x下基于jenkins构建项目时build是成功了的但是部署到tomcat出错：

org.codehaus.cargo.container.tomcat.internal.AbstractTomcatManagerDeployer.redeploy(AbstractTomcatManagerDeployer.java:188)
    at hudson.plugins.deploy.CargoContainerAdapter.deploy(CargoContainerAdapter.java:77)
    at hudson.plugins.deploy.CargoContainerAdapter$DeployCallable.invoke(CargoContainerAdapter.java:147)
    at hudson.plugins.deploy.CargoContainerAdapter$DeployCallable.invoke(CargoContainerAdapter.java:117)
    at hudson.FilePath.act(FilePath.java:1076)
    at hudson.FilePath.act(FilePath.java:1059)
    at hudson.plugins.deploy.CargoContainerAdapter.redeploy(CargoContainerAdapter.java:114)
    at hudson.plugins.deploy.PasswordProtectedAdapterCargo.redeploy(PasswordProtectedAdapterCargo.java:93)
    at hudson.plugins.deploy.DeployPublisher.perform(DeployPublisher.java:64)
    at hudson.tasks.BuildStepMonitor$3.perform(BuildStepMonitor.java:45)
    at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:741)
    at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:690)
    at hudson.maven.MavenModuleSetBuild$MavenModuleSetBuildExecution.post2(MavenModuleSetBuild.java:1073)
    at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:635)
    at hudson.model.Run.execute(Run.java:1843)
    at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:543)
    at hudson.model.ResourceController.execute(ResourceController.java:97)
    at hudson.model.Executor.run(Executor.java:429)
Caused by: org.codehaus.cargo.container.tomcat.internal.TomcatManagerException: The username you provided is not allowed to use the text-based Tomcat Manager (error 403)

解决方法是到tomcat的 /webapps/manager/META_INF/context.xml文件，将文件中对访问的来源受限设置注释

<Context antiResourceLocking="false" privileged="true" >
<!--
  <Valve className="org.apache.catalina.valves.RemoteAddrValve"
         allow="127.d+.d+.d+|::1|0:0:0:0:0:0:0:1" />
--> //注释掉即可
  <Manager sessionAttributeValueClassNameFilter="java.lang.(?:Boolean|Integer|Long|Number|String)|org.apache.catalina.filters.CsrfPreventionFilter$LruCache(?:$1)?|java.util.(?:Linked)?HashMap"/>
</Context>