我准备了.war文件并将其部署到我的topcat服务器上，但是servlet有一个问题。
每个人通常遇到的问题是ClassNotFoundException，但这个是NullPointerException，我找不到原因。谢谢你的帮助。
我使用jdk 1.5，我的项目是GWT 2.3.0, tomcat是tomcat 5。
Properties.java中的第365行是inLimit = inStream.read(inBuf);，其中stream (InputStream)是类LineReader的构造函数的输入参数。异常是从方法readLine()抛出的。
下面是堆栈跟踪:
- Marking servlet generalService as unavailable
- Allocate exception for servlet generalService
java.lang.NullPointerException
at java.util.Properties$LineReader.readLine(Properties.java:365)
at java.util.Properties.load(Properties.java:293)
at com.cs.eyeks.gwt.core.EyeksGwtConf.<init>(EyeksGwtConf.java:17)
at com.cs.eyeks.gwt.core.EyeksGwtConf.getConfiguration(EyeksGwtConf.java
:29)
at com.cs.eyeks.gwt.EyeksGwtRemoteServiceServlet.<init>(EyeksGwtRemoteSe
rviceServlet.java:28)
at tr.gov.gib.mhdb.vimer.vimerapp.server.GeneralServiceImpl.<init>(Gener
alServiceImpl.java:64)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstruct
orAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingC
onstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:501)
at java.lang.Class.newInstance0(Class.java:350)
at java.lang.Class.newInstance(Class.java:303)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.
java:1089)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.jav
a:791)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:127)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
a:151)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:870)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.p
rocessConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpo
int.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFol
lowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadP
ool.java:685)
at java.lang.Thread.run(Thread.java:595)
EyeksGwtConf.java，第17行尝试加载一个不存在的配置文件，或者Properties的文件名为空。