Ant javascript 和套接字 numberformatException

Question

我有这个 ant 目标来验证端口是否被占用。该脚本实际上确实获得了正确的端口 8080，尽管由于某种原因出现了新行。

<loadfile srcfile="hudson.xml" property="port">
            <filterchain>
                <scriptfilter language="javascript">
                if (self.getToken().indexOf("httpPort") != -1)
                    self.setToken(parseInt(self.getToken().substring((self.getToken().indexOf("httpPort")+9),(self.getToken().indexOf("httpPort")+9) + 4)));
                else
                    self.setToken(null);
                </scriptfilter>
                <ignoreblank/>
                <trim/>
            </filterchain>
    </loadfile>

    <echo message="Checking whether Hudson is running"/>
    <condition property="hudson.running">
      <socket server="localhost" port="${port}"/> 
    </condition>

这会引发 Numberformat 异常。我需要解析该端口的 hudson.xml 文件并验证它当前未被使用。有什么建议吗？

构建失败

java.lang.NumberFormatException: For input string: "8080"
    at java.lang.NumberFormatException.forInputString(Unknown Source)
    at java.lang.Integer.parseInt(Unknown Source)
    at java.lang.Integer.<init>(Unknown Source)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at org.apache.tools.ant.IntrospectionHelper$11.set(IntrospectionHelper.java:1069)
    at org.apache.tools.ant.IntrospectionHelper.setAttribute(IntrospectionHelper.java:388)
    at org.apache.tools.ant.RuntimeConfigurable.maybeConfigure(RuntimeConfigurable.java:392)
    at org.apache.tools.ant.RuntimeConfigurable.maybeConfigure(RuntimeConfigurable.java:349)
    at org.apache.tools.ant.UnknownElement.handleChild(UnknownElement.java:568)
    at org.apache.tools.ant.UnknownElement.handleChildren(UnknownElement.java:346)
    at org.apache.tools.ant.UnknownElement.configure(UnknownElement.java:198)
    at org.apache.tools.ant.UnknownElement.maybeConfigure(UnknownElement.java:160)
    at org.apache.tools.ant.Task.perform(Task.java:347)
    at org.apache.tools.ant.Target.execute(Target.java:357)
    at org.apache.tools.ant.Target.performTasks(Target.java:385)
    at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
    at org.apache.tools.ant.Project.executeTarget(Project.java:1306)
    at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
    at org.apache.tools.ant.Project.executeTargets(Project.java:1189)
    at org.apache.tools.ant.Main.runBuild(Main.java:758)
    at org.apache.tools.ant.Main.startAnt(Main.java:217)
    at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
    at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)

Answer 1

您需要在过滤器链中再添加一个过滤器 - stripinebreaks。

您的脚本过滤器仅使用该行中找到的端口号替换整行，但这不会删除末尾的新行。