我测试了通过 Wildfly Maven 插件在 Wildfly(版本 8.2.1)standalone.xml 中添加系统属性的几种变体。基本上,如果系统属性不存在,它会添加一个系统属性,如果存在则更改其值。理想情况下,我想要一个批处理模式的 CLI 脚本,带有嵌套的 if-else。然而,问题是:
这是我的 pom.xml 中的插件部分
<plugin>
<groupId>org.wildfly.plugins</groupId>
<artifactId>wildfly-maven-plugin</artifactId>
<version>1.0.2.Final</version>
<executions>
<execution>
<id>addConfig</id>
<phase>install</phase>
<goals><goal>execute-commands</goal></goals>
<configuration>
<execute-commands>
<!-- <batch>true</batch> Issue #1. Not working in batch mode -->
<batch>false</batch> <!-- This works -->
<commands>
<command>if (outcome != success) of /system-property=app.env:read-resource</command>
<command>/system-property=app.env:add(value=local)</command>
<command>else</command>
<command>/system-property=app.env:remove</command>
<command>/system-property=app.env:add(value=local)</command>
<command>end-if</command>
</commands>
<!-- Issue #2. Nested if-else not working, even in non-batch mode -->
<!--
<batch>false</batch>
<commands>
<command>if (outcome != success) of /system-property=app.env:read-resource</command>
<command>/system-property=app.env:add(value=local)</command>
<command>else</command>
<command>if (result.value == qa) of /system-property=app.env:read-resource</command>
<command>/system-property=app.env:remove</command>
<command>/system-property=app.env:add(value=local)</command>
<command>else</command>
<command>/system-property=app.env:remove</command>
<command>/system-property=app.env:add(value=qa)</command>
<command>end-if</command>
<command>end-if</command>
</commands>
-->
<!-- Issue #3. Batch and nested if-else not working in CLI script. -->
<!--
<scripts>
<script>target/classes/scripts/add-config.cli</script>
</scripts>
-->
</execute-commands>
</configuration>
</execution>
</executions>
</plugin>
如果在批处理模式下,这是异常(exception):
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.wildfly.plugins:wildfly-maven-plugin:1.0.2.Final:execute-commands (addConfig)
on project jboss-config: Execution addConfig of goal org.wildfly.plugins:wildfly-maven-plugin:1.0.2.Final:execute-commands failed: Command 'if (outcome != success) of /system-property=app.env:read-resource' is invalid. The command is not allowed in a batch.
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution addConfig of goal org.wildfly.plugins:wildfly-maven-plugin:1.0.2.Final:execute-commands failed: Command 'if (outcome != success) of /system-property=app.env:read-resource' is invalid. The command is not allowed in a batch.
... 20 more
Caused by: java.lang.IllegalArgumentException: Command 'if (outcome != success) of /system-property=app.env:read-resource' is invalid. The command is not allowed in a batch.
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
... 21 more
Caused by: org.jboss.as.cli.operation.OperationFormatException: The command is not allowed in a batch.
... 24 more
如果它具有嵌套的 if-else,非批处理,则这是异常(exception):
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.wildfly.plugins:wildfly-maven-plugin:1.0.2.Final:execute-commands (addConfig)
on project jboss-config: Execution addConfig of goal org.wildfly.plugins:wildfly-maven-plugin:1.0.2.Final:execute-commands failed: Command 'if (result.value == qa) of /system-property=app.env:read-resource' is invalid. if is not allowed while in batch mode.
...
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution addConfig of goal org.wildfly.plugins:wildfly-maven-plugin:1.0.2.Final:execute-commands failed: Command 'if (result.value == qa) of /system-property=app.env:read-resource' is invalid. if is not allowed while in batch mode.
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:145)
... 20 more
Caused by: java.lang.IllegalArgumentException: Command 'if (result.value == qa) of /system-property=app.env:read-resource' is invalid. if is not allowed while in batch mode.
at org.wildfly.plugin.cli.Commands.executeCommands(Commands.java:178)
... 21 more
Caused by: org.jboss.as.cli.CommandFormatException: if is not allowed while in batch mode.
at org.jboss.as.cli.handlers.ifelse.IfHandler.doHandle(IfHandler.java:130)
... 24 more
为了完整起见,这是我要运行的脚本
batch
if (outcome != success) of /system-property=app.env:read-resource
/system-property=app.env:add(app.env=local)
else
if (result.value == qa) of /system-property=app.env:read-resource
/system-property=app.env:remove
/system-property=app.env:add(app.env=local)
else
/system-property=app.env:remove
/system-property=app.env:add(app.env=qa)
end-if
end-if
run-batch
以及实际运行的内容:
if (outcome != success) of /system-property=app.env:read-resource
/system-property=app.env:add(value=local)
else
/system-property=app.env:remove
/system-property=app.env:add(value=local)
end-if
最佳答案
问题是在批处理模式下不允许 if-else 流,就像语句已经作为批处理执行一样。这也意味着 nested if statements aren't allowed .
虽然像下面这样的东西会起作用
if (outcome != success) of /system-property=app.env:read-resource
/system-property=app.env:add(value=local)
end-if
if (result.value == qa) of /system-property=app.env:read-resource
/system-property=app.env:remove
/system-property=app.env:add(value=local)
else
/system-property=app.env:remove
/system-property=app.env:add(value=qa)
end-if
如果该属性丢失,这将添加它,删除它然后重新添加它。这是让它工作的唯一方法,而且不是一项昂贵的操作。
请注意,您发布的脚本有点过时。添加系统属性时
value
属性用于 add
手术。还有 test
的混合和 app.env
对于属性名称。
关于command-line-interface - Wildfly CLI 添加/更新系统属性批处理和 if-else 问题,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35611343/