java - Eclipse JSP项目错误: org. apache.catalina.core.ApplicationContext日志严重:操作:null

Question

我需要在我的个人 PC 上运行现有 JSP Web 服务的实例，该项目当前正在具有 tomcat 6 和 java 6 的服务器上运行。但是，尝试在 eclipse kepler 上运行它时出现以下错误 (Kepler因为它与我的设置中的 java 6) 和 tomcat 6 兼容。错误是:

 26 Jan 2020 2:13:25 AM org.apache.catalina.core.ApplicationContext log
 SEVERE: action: null
 java.lang.NullPointerException
        at java.util.Properties$LineReader.readLine(Properties.java:418)
        at java.util.Properties.load0(Properties.java:337)
        at java.util.Properties.load(Properties.java:325)
        at com.samaxes.webreport.birt.BirtEngine.loadEngineProps(BirtEngine.java:148)
        at com.samaxes.webreport.birt.BirtEngine.initBirtConfig(BirtEngine.java:52)
        at com.samaxes.webreport.plugin.BirtInitializationPlugin.init(BirtInitializationPlugin.java:33)
        at org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java:869)
        at org.apache.struts.action.ActionServlet.init(ActionServlet.java:336)
        at javax.servlet.GenericServlet.init(GenericServlet.java:212)
        at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1173)
        at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:993)
        at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4420)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:4733)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
        at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
        at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
        at org.apache.catalina.core.StandardService.start(StandardService.java:525)
        at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
26 Jan 2020 2:13:25 AM org.apache.catalina.core.ApplicationContext log
INFO: Marking servlet action as unavailable
26 Jan 2020 2:13:25 AM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet  threw load() exception
javax.servlet.UnavailableException
    at org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java:880)
    at org.apache.struts.action.ActionServlet.init(ActionServlet.java:336)
    at javax.servlet.GenericServlet.init(GenericServlet.java:212)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1173)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:993)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4420)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4733)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
    at org.apache.catalina.core.StandardService.start(StandardService.java:525)
    at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)

如有任何帮助，我们将不胜感激!

Answer 1

这是您的问题:

 java.lang.NullPointerException
        at java.util.Properties$LineReader.readLine(Properties.java:418)
        at java.util.Properties.load0(Properties.java:337)
        at java.util.Properties.load(Properties.java:325)
        at com.samaxes.webreport.birt.BirtEngine.loadEngineProps(BirtEngine.java:148)

由于缺少带有 Birt 配置的 .properties 文件，因此引发了期望。开始:https://www.eclipse.org/birt/getting-started/