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Integrate Actviti 6 in Spring Application

himabindu_v

Just I added below dependency in pom.xml

<groupId>org.activiti</groupId>

<artifactId>activiti-spring</artifactId>

</dependency>

After I run the project, I got below error

Feb 20, 2021 1:48:48 PM org.apache.catalina.core.StandardWrapperValve invoke

SEVERE: Servlet.service() for servlet [jsp] in context with path [/sp] threw exception [org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.apache.tiles.request.render.CannotRenderException: ServletException including path '/WEB-INF/views/layout.jsp'.] with root cause

java.lang.NullPointerException

at java.util.Objects.requireNonNull(Unknown Source)

at javax.el.CompositeELResolver.add(CompositeELResolver.java:47)

at org.apache.jasper.el.JasperELResolver.add(JasperELResolver.java:70)

at org.apache.jasper.el.JasperELResolver.<init>(JasperELResolver.java:58)

at org.apache.jasper.runtime.JspApplicationContextImpl.createELResolver(JspApplicationContextImpl.java:120)

at org.apache.jasper.runtime.JspApplicationContextImpl.createELContext(JspApplicationContextImpl.java:89)

at org.apache.jasper.runtime.PageContextImpl.getELContext(PageContextImpl.java:950)

at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:935)

at org.apache.jsp.WEB_002dINF.views.layout_jsp._jspService(layout_jsp.java:121)

at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)

at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)

at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)

at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:728)

at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:470)

at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:395)

at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:316)

at org.apache.tiles.request.servlet.ServletRequest.forward(ServletRequest.java:265)

at org.apache.tiles.request.servlet.ServletRequest.doForward(ServletRequest.java:228)

at org.apache.tiles.request.AbstractClientRequest.dispatch(AbstractClientRequest.java:57)

at org.apache.tiles.request.render.DispatchRenderer.render(DispatchRenderer.java:47)

at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:259)

at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:397)

at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:238)

at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:221)

at org.apache.tiles.renderer.DefinitionRenderer.render(DefinitionRenderer.java:59)

at org.springframework.web.servlet.view.tiles3.TilesView.renderMergedOutputModel(TilesView.java:146)

at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316)

at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1370)

at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1116)

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1055)

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)

at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:897)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)