您好，我使用 Mojara 2.1.14 和 Primefaces 3.3.1 开发的应用程序出现以下错误。我不知道这是从哪里来的。请帮忙。几周以来，我一直在努力寻找解决方案。
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
• at java.lang.String.substring(String.java:1949)
• at com.sun.faces.renderkit.ServerSideStateHelper.getState(ServerSideStateHelper.java:273)
• at com.sun.faces.renderkit.ResponseStateManagerImpl.getState(ResponseStateManagerImpl.java:100)
• at com.sun.faces.application.view.FaceletPartialStateManagementStrategy.restoreView(FaceletPartialStateManagementStrategy.java:353)
• at com.sun.faces.application.StateManagerImpl.restoreView(StateManagerImpl.java:138)
• at com.sun.faces.application.view.ViewHandlingStrategy.restoreView(ViewHandlingStrategy.java:123)
• at com.sun.faces.application.view.FaceletViewHandlingStrategy.restoreView(FaceletViewHandlingStrategy.java:531)
• at com.sun.faces.application.view.MultiViewHandler.restoreView(MultiViewHandler.java:141)
• at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:192)
• at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
• at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:116)
• at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
• at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
• at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
• at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
• at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
• at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
• at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
• at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:83)
• at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
• at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
• at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
• at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
• at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
• at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
• at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
• at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
• at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
• at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
• at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
• at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
• at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
• at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
• at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
• at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
• at java.lang.Thread.run(Thread.java:679)
这是我的 web.xml
<web-app id="WebApp_ID" version="2.5"
xmlns="http://java.sun.com/xml/ns/j2ee">
<filter>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
<init-param>
<param-name>thresholdSize</param-name>
<param-value>2097152</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>faces/index.xhtml</welcome-file>
</welcome-file-list>
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<!-- <param-value>Development</param-value> -->
<param-value>Production</param-value>
</context-param>
<context-param>
<param-name>primefaces.THEME</param-name>
<param-value>bluesky</param-value>
</context-param>
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>server</param-value>
</context-param>
<context-param>
<param-name>javax.faces.FACELETS_REFRESH_PERIOD</param-name>
<param-value>-1</param-value>
</context-param>
<context-param>
<param-name>javax.faces.PARTIAL_STATE_SAVING</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>com.sun.faces.COMPRESS_STATE</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<param-name>javax.faces.FACELETS_LIBRARIES</param-name>
<param-value>/META-INF/components.taglib.xml</param-value>
</context-param>
<context-param>
<param-name>facelets.SKIP_COMMENTS</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>defaultHtmlEscape</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>javax.faces.CONFIG_FILES</param-name>
<param-value>/WEB-INF/jsf-beans.xml</param-value>
</context-param>
<session-config>
<session-timeout>15</session-timeout>
</session-config>
<security-constraint>
<web-resource-collection>
<url-pattern>/views/*</url-pattern>
<http-method>GET</http-method>
</web-resource-collection>
<auth-constraint />
</security-constraint>
<!--
<context-param>
<param-name>com.sun.faces.numberOfViewsInSession</param-name>
<param-value>1</param-value>
</context-param>
<context-param>
<param-name>com.sun.faces.numberOfLogicalViews</param-name>
<param-value>1</param-value>
</context-param> -->
</web-app>
谢谢你的帮助。