是只有这一个空白还是所有都空白，点击设计看看能不能打开对应界面，在设计界面点预览看看有没有反应。
访问的时候看下后端控制台有没有报错日志。
设计能打开有一个报错
java.lang.NoClassDefFoundError: Could not initialize class org.apache.velocity.util.introspection.MethodMap at org.apache.velocity.util.introspection.ClassMap$MethodCache.<init>(ClassMap.java:239) at org.apache.velocity.util.introspection.ClassMap$MethodCache.<init>(ClassMap.java:204) at org.apache.velocity.util.introspection.ClassMap.createMethodCache(ClassMap.java:127) at org.apache.velocity.util.introspection.ClassMap.<init>(ClassMap.java:88) at org.apache.velocity.util.introspection.IntrospectorCache.put(IntrospectorCache.java:168) at org.apache.velocity.util.introspection.IntrospectorBase.getMethod(IntrospectorBase.java:97) at org.apache.velocity.util.introspection.Introspector.getMethod(Introspector.java:94) at org.apache.velocity.runtime.parser.node.PropertyExecutor.discover(PropertyExecutor.java:101) at org.apache.velocity.runtime.parser.node.PropertyExecutor.<init>(PropertyExecutor.java:71) at org.apache.velocity.runtime.parser.node.PropertyExecutor.<init>(PropertyExecutor.java:48) at org.apache.velocity.util.introspection.UberspectImpl.getPropertyGet(UberspectImpl.java:375) at org.apache.velocity.runtime.parser.node.ASTIdentifier.execute(ASTIdentifier.java:166) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.evaluate(ASTReference.java:676) at org.apache.velocity.runtime.parser.node.ASTExpression.evaluate(ASTExpression.java:65) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:169) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at com.bstek.ureport.console.html.HtmlPreviewServletAction.execute(HtmlPreviewServletAction.java:142) at com.bstek.ureport.console.UReportServlet.service(UReportServlet.java:80) at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:614) at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74) at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129) at org.springblade.core.tool.request.BladeRequestFilter.doFilter(BladeRequestFilter.java:94) at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67) at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67) at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67) at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) at org.springframework.web.filter.ServerHttpObservationFilter.doFilterInternal(ServerHttpObservationFilter.java:113) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67) at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67) at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84) at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62) at io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68) at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) at io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:68) at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:117) at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46) at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64) at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60) at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77) at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.servlet.handlers.SendErrorPageHandler.handleRequest(SendErrorPageHandler.java:52) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:276) at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135) at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:132) at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48) at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43) at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:256) at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:101) at io.undertow.server.Connectors.executeRootHandler(Connectors.java:395) at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:859) at org.jboss.threads.ContextHandler$1.runWith(ContextHandler.java:18) at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2513) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1538) at org.xnio.XnioWorker$WorkerThreadFactory$1$1.run(XnioWorker.java:1282) at java.base/java.lang.Thread.run(Thread.java:833) Caused by: java.lang.ExceptionInInitializerError: Exception java.lang.NoSuchMethodError: 'java.lang.reflect.Method org.apache.commons.lang3.reflect.MethodUtils.getMethodObject(java.lang.Class, java.lang.String, java.lang.Class[])' [in thread "XNIO-1 task-6"] at org.apache.velocity.util.introspection.MethodMap.<clinit>(MethodMap.java:61) ... 73 common frames omitted
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