我准备.war文件并将其部署到我的topmcat服务器上,但servlet存在问题。问题在Tomcat 5上部署.war(空指针异常)
大家平常遇到的问题是ClassNotFoundException
,但是这个是NullPointerException
,我找不到原因。谢谢你的帮助。
我使用的是JDK 1.5,我的项目是GWT 2.3.0和Tomcat是Tomcat的5
在Properties.java第365行是inLimit = inStream.read(inBuf);
其中inStream中(InputStream
)是输入参数的构造函数LineReader
。方法readLine()
引发异常。
这里的堆栈跟踪:
- 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)
似乎属性文件丢失,你可以检查属性文件的源代码在'Properties.java:365' –
也许你可以看看或添加到'Properties.java'的问题行365,因为那是错误的地方发生。 (我知道它在JDK中,但你可以从中获得源代码。) –
你的意思是jdk可能会导致问题?我使用jdk 1.5,我的项目是GWT 2.3.0,而tomcat是Tomcat 5. – Halo