我正在尝试安装&使用要安装的ant任务为MobileFirst服务器配置应用程序中心。在安装任务之前，我能够使用数据库任务在应用程序中心数据库中创建必要的表。
我在运行时收到了下面日志中提到的错误
ant -f configure-appcenter-liberty-mysql.xml install
参考
https://www.ibm.com/support/knowledgecenter/SSHS8R_7.1.0/com.ibm.worklight.installconfig.doc/appcenter/t_ac_deploy_cons_serv_ant_tasks.html?lang=en
Ant脚本输出
root@ubuntu:/opt/IBM/MobileFirst_Platform_Server/ApplicationCenter/configuration-samples# sudo ant -v -f configure-appcenter-liberty-mysql-edited.xml install
Apache Ant(TM) version 1.9.3 compiled on April 8 2014
Buildfile: /opt/IBM/MobileFirst_Platform_Server/ApplicationCenter/configuration-samples/configure-appcenter-liberty-mysql-edited.xml
Detected Java version: 1.7 in: /usr/lib/jvm/java-7-openjdk-amd64/jre
Detected OS: Linux
parsing buildfile /opt/IBM/MobileFirst_Platform_Server/ApplicationCenter/configuration-samples/configure-appcenter-liberty-mysql-edited.xml with URI = file:/opt/IBM/MobileFirst_Platform_Server/ApplicationCenter/configuration-samples/configure-appcenter-liberty-mysql-edited.xml
Project base dir set to: /opt/IBM/MobileFirst_Platform_Server/ApplicationCenter/configuration-samples
parsing buildfile jar:file:/usr/share/ant/lib/ant.jar!/org/apache/tools/ant/antlib.xml with URI = jar:file:/usr/share/ant/lib/ant.jar!/org/apache/tools/ant/antlib.xml from a zip file
Build sequence for target(s) `install' is [install]
Complete build sequence is [install, help, minimal-update, databases, uninstall, ]
install:
[installApplicationCenter] Logging output of task <installApplicationCenter> to file /root/.mobilefirst_platform_server/configuration-logs/installApplicationCenter_2016_04_20_22_42_09.log
[installApplicationCenter] Copying /opt/IBM/MobileFirst_Platform_Server/tools/mysql-connector-java-5.1.38/mysql-connector-java-5.1.38-bin.jar to /opt/IBM/WebSphere/Liberty/usr/shared/resources/mysql/mysql-connector-java-5.1.38-bin.jar
[installApplicationCenter] Copying /opt/IBM/MobileFirst_Platform_Server/tools/mysql-connector-java-5.1.38/mysql-connector-java-5.1.38-bin.jar to /opt/IBM/WebSphere/Liberty/usr/shared/resources/mysql/mysql-connector-java-5.1.38-bin.jar
[installApplicationCenter] Copying /opt/IBM/WebSphere/Liberty/usr/servers/simpleServer/server.xml to /opt/IBM/WebSphere/Liberty/usr/servers/simpleServer/server.xml.bak2
[installApplicationCenter] Modifying /opt/IBM/WebSphere/Liberty/usr/servers/simpleServer/server.xml
[installApplicationCenter] Deleting /opt/IBM/WebSphere/Liberty/usr/servers/simpleServer/server.xml.bak2
BUILD FAILED
/opt/IBM/MobileFirst_Platform_Server/ApplicationCenter/configuration-samples/configure-appcenter-liberty-mysql-edited.xml:74: An error occured while reading file /opt/IBM/WebSphere/Liberty/usr/servers/simpleServer/server.xml. Error: null.
at com.ibm.worklight.config.ant.appserver.AppCenterAppServerTask.wasLibertyAugmentConfigFiles(AppCenterAppServerTask.java:654)
at com.ibm.worklight.config.ant.appserver.AppServerTask.configureAppServer(AppServerTask.java:4423)
at com.ibm.worklight.config.ant.appserver.AppServerTask.installItems(AppServerTask.java:4165)
at com.ibm.worklight.config.ant.appserver.AppCenterAppServerTask.installItems(AppCenterAppServerTask.java:1143)
at com.ibm.worklight.config.ant.appserver.AppServerTask.processItems(AppServerTask.java:4114)
at com.ibm.worklight.config.ant.appserver.AppCenterAppServerTask.buildAndProcessItems(AppCenterAppServerTask.java:1088)
at com.ibm.worklight.config.ant.appserver.AppServerTask.setupBuildAndProcessItems(AppServerTask.java:3064)
at com.ibm.worklight.config.ant.appserver.AppServerTask.doExecute(AppServerTask.java:307)
at com.ibm.worklight.config.ant.appserver.InstallApplicationCenterTask.execute(InstallApplicationCenterTask.java:28)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:435)
at org.apache.tools.ant.Target.performTasks(Target.java:456)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1393)
at org.apache.tools.ant.Project.executeTarget(Project.java:1364)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1248)
at org.apache.tools.ant.Main.runBuild(Main.java:851)
at org.apache.tools.ant.Main.startAnt(Main.java:235)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
Caused by: java.lang.NullPointerException
at com.ibm.worklight.config.helper.appserver.WASLibertyAugmentServerXML.addAppCenterApplicationAndDataSourceElements(WASLibertyAugmentServerXML.java:1921)
at com.ibm.worklight.config.helper.appserver.WASLibertyAugmentServerXML.mainInstallApplicationCenter(WASLibertyAugmentServerXML.java:143)
at com.ibm.worklight.config.ant.appserver.AppCenterAppServerTask.wasLibertyAugmentConfigFiles(AppCenterAppServerTask.java:642)
... 25 more
Total time: 7 seconds
仅根据您正在使用的Ant文件的名称以及所包含的消息输出中显示的路径名，您似乎是从错误的Ant文件示例开始的——换句话说，您似乎正在使用Liberty Profile作为应用程序服务器，但您是从与WebSphere application server一起使用的Ant示例文件开始的。
假设事实确实如此，那么您应该从示例配置文件"configure-appcenter-liberty-mysql.xml"开始。
此外，作为一个提示，似乎即使使用了您正在使用的文件，您也"原地"修改了MobileFirst Platform Foundation 7.1提供的示例Ant文件，并将其写回原始文件名并使用了它？正如您在问题中的文档链接中所提到的，实际上建议您制作该文件的副本并使用该副本，而不是修改我们提供的副本-这样，您将始终拥有我们提供的未修改的样本，以防您想引用它们，或将它们用作不同服务器和/或不同配置的模板。
我认为您使用的是Liberty Profile 8.5.5.9。此版本中的密码解码机制发生了一些更改，与MobileFirst不再兼容。要么向IBM支持APARhttp://www-01.ibm.com/support/docview.wss?crawler=1&uid=swg1PI61386，或者使用Liberty 8.5.5.8。