Hudson插件问题

Question

我创建了几乎与JobTypeColumn相同的插件。只有一个区别-它显示的是工作描述而不是工作类型。但是在我不能将这个列添加到我的列表视图之后。在我手动编辑我的config.xml之后，我有一个NullPointerException。

java.lang.NullPointerException
    at hudson.model.Descriptor.newInstancesFromHeteroList(Descriptor.java:626)
    at hudson.util.DescribableList.rebuildHetero(DescribableList.java:164)
    at hudson.model.ListView.submit(ListView.java:262)
    at hudson.model.View.doConfigSubmit(View.java:484)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:185)
    at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:101)
    at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:54)
    at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:74)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:492)
    at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:180)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:492)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:408)
    at org.kohsuke.stapler.Stapler.service(Stapler.java:117)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:45)
    at winstone.ServletConfiguration.execute(ServletConfiguration.java:249)
    at winstone.RequestDispatcher.forward(RequestDispatcher.java:335)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:378)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:94)
    at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:304)
    at org.jvnet.hudson.plugins.monitoring.HudsonMonitoringFilter.doFilter(HudsonMonitoringFilter.java:31)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:97)
    at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:86)
    at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
    at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47)
    at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
    at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
    at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)
    at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
    at winstone.RequestDispatcher.forward(RequestDispatcher.java:333)
    at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:244)
    at winstone.RequestHandlerThread.run(RequestHandlerThread.java:150)
    at java.lang.Thread.run(Unknown Source)

Answer 1

你看过Hudson source code了吗？(描述符文件是here，但您必须先访问wiki页面才能读取用户登录名/密码)。

当然，我不知道您是否在使用最新的构建，但是将源代码与堆栈跟踪进行比较，它看起来像是JSON对象有问题，hudson无法实例化其中一个描述符。

Answer 2

直接编辑config.xml不是一种好方法。首先，弄清楚如何让UI正确地保存配置。这可能也会解决你的NPE问题，因为你的插件可能没有被Hudson正确地拾取。