@Repository
public class MenuDAOImpl implements MenuDAO {
@Autowired
private SessionFactory sessionFactory;
@Override
public List<Menu> showMenus(String typemenu) {
Criteria criteria = sessionFactory.getCurrentSession().createCriteria(Menu.class);
criteria.add(Restrictions.ne("Id", 1));
criteria.add(Restrictions.eq("Status", 1));
criteria.add(Restrictions.eq("Menutype", typemenu));
criteria.addOrder(Order.asc("Lft"));
return criteria.list();
}
}
public interface MenuService {
public List<Menu> showMenus(String typemenu);
}
@Service
public class MenuServiceImpl implements MenuService {
@Autowired
private MenuDAO menuDAO;
@Transactional
public List<Menu> showMenus(String typemenu) {
return menuDAO.showMenus(typemenu);
}
}
<% List<Menu> listmenu = DefaultMenuBar.buildMenuBar("adminmenu");%>
显示java.lang.NullPointerException com.dnict.spring3mvc.main.service.MenuServiceImpl.showMenus(MenuServiceImpl.java:90) com.dnict.utilities.DefaultMenuBar.buildMenuBar(DefaultMenuBar.java:13) org.apache.jsp.WEB_002dINF.layouts.admin_002dtiles.menu_jsp._jspService(menu_jsp.java:67) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:927) org.apache.jasper.runtime.PageContextImpl.doInclude(PageContextImpl.java:684) org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:678) org.apache.tiles.jsp.context.JspTilesRequestContext.include(JspTilesRequestContext.java:103) org.apache.tiles.jsp.context.JspTilesRequestContext.dispatch(JspTilesRequestContext.java:96) org.apache.tiles.renderer.impl.TemplateAttributeRenderer.write(TemplateAttributeRenderer.java:44) org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:106) org.apache.tiles.renderer.impl.ChainedDelegateAttributeRenderer.write(ChainedDelegateAttributeRenderer.java:76) org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:106) org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:670) org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:336) org.apache.tiles.template.InsertAttributeModel.renderAttribute(InsertAttributeModel.java:210) org.apache.tiles.template.InsertAttributeModel.end(InsertAttributeModel.java:126) org.apache.tiles.jsp.taglib.InsertAttributeTag.doTag(InsertAttributeTag.java:311) org.apache.jsp.WEB_002dINF.layouts.admin_002dtiles.baseLayout_jsp._jspx_meth_tiles_005finsertAttribute_005f1(baseLayout_jsp.java:252) org.apache.jsp.WEB_002dINF.layouts.admin_002dtiles.baseLayout_jsp._jspService(baseLayout_jsp.java:174) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) org.apache.tiles.servlet.context.ServletTilesRequestContext.forward(ServletTilesRequestContext.java:241) org.apache.tiles.servlet.context.ServletTilesRequestContext.dispatch(ServletTilesRequestContext.java:222) org.apache.tiles.renderer.impl.TemplateAttributeRenderer.write(TemplateAttributeRenderer.java:44) org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:106) org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:670) org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:690) org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:644) org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:627) org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:321) org.springframework.web.servlet.view.tiles2.TilesView.renderMergedOutputModel(TilesView.java:124) org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:264) org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1208) org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:992) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:844) javax.servlet.http.HttpServlet.service(HttpServlet.java:621) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:330) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103) org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154) org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150) org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199) org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110) org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:125) org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.access.channel.ChannelProcessingFilter.doFilter(ChannelProcessingFilter.java:144) org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:343) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:260)
答案 0 :(得分:0)
试试这个;
WebApplicationContext wac = WebApplicationContextUtils.getRequiredWebApplicationContext(this.getServletContext());
MySpringService srvObject = (MySpringService) wac.getBean("mySpringService");//mySpringService mean bean id of MySpringService
List<myspringservice> lst= srvObject.listAll();
参考链接:
http://codexamples.blogspot.in/2010/05/how-to-access-spring-service-from.html
http://digitaljoel.nerd-herders.com/2010/11/01/accessing-spring-session-beans-in-jsp/