Html Vaadin java类将不会启动
我参加了一个从这个论坛登录到web应用程序的测试课程 我使用Vaadin designer制作单页Web应用程序。用户应该登录，并将转移到我与设计师创建的网站。目前Webapp没有Java连接，我唯一的目标是从登录转移到MainView页面 今天我又试了一次，但它已经不起作用了。我在Java方面什么也没做，只是扩展了设计器文件Html Vaadin java类将不会启动,html,vaadin,designer,transfer,Html,Vaadin,Designer,Transfer,我参加了一个从这个论坛登录到web应用程序的测试课程 我使用Vaadin designer制作单页Web应用程序。用户应该登录，并将转移到我与设计师创建的网站。目前Webapp没有Java连接，我唯一的目标是从登录转移到MainView页面 今天我又试了一次，但它已经不起作用了。我在Java方面什么也没做，只是扩展了设计器文件 package com.example; import com.vaadin.flow.component.button.Button; import com.vaa
package com.example;
import com.vaadin.flow.component.button.Button;
import com.vaadin.flow.component.login.AbstractLogin;
import com.vaadin.flow.component.login.LoginForm;
import com.vaadin.flow.component.notification.Notification;
import com.vaadin.flow.component.orderedlayout.VerticalLayout;
import com.vaadin.flow.router.Route;
import com.vaadin.flow.server.PWA;
import com.vaadin.flow.server.VaadinSession;
import java.util.Objects;
import java.util.Optional;
/**
* The main view contains a button and a click listener.
*/
@Route ( "" )
@PWA ( name = "Project Base for Vaadin", shortName = "Project Base" )
public class MainView extends VerticalLayout
{
public MainView ( )
{
this.display();
}
private void display ( )
{
if ( Objects.isNull( VaadinSession.getCurrent().getAttribute( User.class ) ) )
{
this.removeAll();
this.add( this.makeLoginForm() );
} else
{ // Else we have a User, so must be authenticated.
this.removeAll();
this.add( new MyContentView() );
}
}
private LoginForm makeLoginForm ( )
{
Authenticator authenticator = new Authenticator();
LoginForm component = new LoginForm();
component.addLoginListener( ( AbstractLogin.LoginEvent loginEvent ) -> {
Optional < User > user = authenticator.authenticate( loginEvent.getUsername() , loginEvent.getPassword() );
if ( user.isPresent() )
{
VaadinSession.getCurrent().setAttribute( User.class , user.get() );
this.display();
} else
{
component.setError( true );
}
} );
return component;
}
package.com.example；
导入com.vaadin.flow.component.button.button；
导入com.vaadin.flow.component.login.AbstractLogin；
导入com.vaadin.flow.component.login.LoginForm；
导入com.vaadin.flow.component.notification.notification；
导入com.vaadin.flow.component.orderedlayout.VerticalLayout；
导入com.vaadin.flow.router.Route；
导入com.vaadin.flow.server.PWA；
导入com.vaadin.flow.server.VaadinSession；
导入java.util.Objects；
导入java.util.Optional；
/**
*主视图包含一个按钮和一个单击侦听器。
*/
@路线（“”）
@PWA（name=“Vaadin的项目基础”，shortName=“项目基础”）
公共类主视图扩展了垂直布局
{
公共主视图（）
{
这个.display（）；
}
专用空白显示（）
{
if（Objects.isNull（VaadinSession.getCurrent（）.getAttribute（User.class）））
{
这个。removeAll（）；
this.add（this.makeLoginForm（））；
}否则
{//否则我们有一个用户，因此必须进行身份验证。
这个。removeAll（）；
添加（新MyContentView（））；
}
}
私有LoginForm makeLoginForm（）
{
验证器验证器=新验证器（）；
LoginForm组件=新的LoginForm（）；
component.addLoginListener（（AbstractLogin.LoginEvent LoginEvent）->{
可选User=authenticator.authenticate（loginEvent.getUsername（），loginEvent.getPassword（））；
if（user.isPresent（））
{
VaadinSession.getCurrent（）.setAttribute（User.class，User.get（））；
这个.display（）；
}否则
{
组件设置错误（true）；
}
} );
返回组件；
}
package.com.example；
导入com.vaadin.flow.component.accordion.accordion；
导入com.vaadin.flow.component.button.button；
导入com.vaadin.flow.component.datepicker.datepicker；
导入com.vaadin.flow.component.html.Label；
导入com.vaadin.flow.component.polymertemplate.Id；
导入com.vaadin.flow.templatemodel.templatemodel；
导入com.vaadin.flow.component.Tag；
导入com.vaadin.flow.component.dependency.JsModule；
导入com.vaadin.flow.component.polymertemplate.polymertemplate；
/**
*设计器为“我的内容”视图模板生成的组件。
*
*设计器将添加和删除带有@Id映射的字段，但
*不会覆盖或以其他方式更改此文件。
*/
@标签（“我的内容视图”）
@JsModule（“./mycontent-view.js”）
公共类MyContentView扩展了聚合模板{
@Id（“瓦迪手风琴”）
私人手风琴；
@Id（“标签”）
自有品牌；
@Id（“标签1”）
自有标签标签1；
@身份证（“生日”）
私人日期选择器生日；
@Id（“vaadinButton”）
私人按钮；
/**
*创建一个新的MyContentView。
*/
公共内容视图（）{
//您可以在此处初始化连接的UI组件所需的任何数据。
}
/**
*此模型在MyContentView和我的内容视图之间绑定属性
*/
公共接口MyContentViewModel扩展了TemplateModel{
//在此处添加模板属性的setter和getter。
}
}
There was an exception while trying to navigate to '' with the exception message 'Error creating bean with name 'com.example.MainView': Instantiation of bean failed;
nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.example.MainView]: Constructor threw exception;
nested exception is java.lang.IllegalStateException: There is no element with id='vaadinAccordion' in the template file './my-content-view.js'. Cannot map it using @Id'
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.example.MainView': Instantiation of bean failed;
nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.example.MainView]: Constructor threw exception;
nested exception is java.lang.IllegalStateException: There is no element with id='vaadinAccordion' in the template file './my-content-view.js'. Cannot map it using @Id
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1320)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1214)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:307)
at com.vaadin.flow.spring.SpringInstantiator.getOrCreate(SpringInstantiator.java:117)
at com.vaadin.flow.di.Instantiator.createRouteTarget(Instantiator.java:160)
at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.lambda$getRouteTarget$1(AbstractNavigationStateRenderer.java:133)
at java.base/java.util.Optional.orElseGet(Optional.java:369)
at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.getRouteTarget(AbstractNavigationStateRenderer.java:132)
at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.sendBeforeEnterEventAndPopulateChain(AbstractNavigationStateRenderer.java:498)
at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.createChainIfEmptyAndExecuteBeforeEnterNavigation(AbstractNavigationStateRenderer.java:477)
at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.handle(AbstractNavigationStateRenderer.java:228)
at com.vaadin.flow.router.Router.handleNavigation(Router.java:249)
at com.vaadin.flow.router.Router.navigate(Router.java:220)
at com.vaadin.flow.router.Router.navigate(Router.java:186)
at com.vaadin.flow.router.Router.initializeUI(Router.java:93)
at com.vaadin.flow.server.BootstrapHandler.createAndInitUI(BootstrapHandler.java:1516)
at com.vaadin.flow.server.BootstrapHandler.synchronizedHandleRequest(BootstrapHandler.java:472)
at com.vaadin.flow.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40)
at com.vaadin.flow.server.VaadinService.handleRequest(VaadinService.java:1545)
at com.vaadin.flow.server.VaadinServlet.service(VaadinServlet.java:247)
at com.vaadin.flow.spring.SpringServlet.service(SpringServlet.java:120)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:712)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:352)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
at org.springframework.web.servlet.mvc.ServletForwardingController.handleRequestInternal(ServletForwardingController.java:141)
at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:177)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:52)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
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:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
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.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.example.MainView]: Constructor threw exception; nested exception is java.lang.IllegalStateException: There is no element with id='vaadinAccordion' in the template file './my-content-view.js'. Cannot map it using @Id
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:213)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1312)
... 72 more
Caused by: java.lang.IllegalStateException: There is no element with id='vaadinAccordion' in the template file './my-content-view.js'. Cannot map it using @Id
at com.vaadin.flow.component.polymertemplate.IdCollector.collectedInjectedId(IdCollector.java:106)
at com.vaadin.flow.component.polymertemplate.IdCollector.lambda$collectInjectedIds$1(IdCollector.java:78)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
at com.vaadin.flow.component.polymertemplate.IdCollector.collectInjectedIds(IdCollector.java:78)
at com.vaadin.flow.component.polymertemplate.IdCollector.collectInjectedIds(IdCollector.java:67)
at com.vaadin.flow.component.polymertemplate.TemplateDataAnalyzer.parseTemplate(TemplateDataAnalyzer.java:215)
at com.vaadin.flow.component.polymertemplate.TemplateInitializer.<init>(TemplateInitializer.java:91)
at com.vaadin.flow.component.polymertemplate.PolymerTemplate.<init>(PolymerTemplate.java:88)
at com.vaadin.flow.component.polymertemplate.PolymerTemplate.<init>(PolymerTemplate.java:103)
at com.example.MyContentView.<init>(MyContentView.java:38)
at com.example.MainView.display(MainView.java:38)
at com.example.MainView.<init>(MainView.java:26)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:200)
... 74 more
尝试导航到“”时出现异常，异常消息为“创建名为'com.example.MainView'的bean时出错”：bean实例化失败；
嵌套异常为org.springframework.beans.BeanInstantiationException:未能实例化[com.example.MainView]：构造函数引发异常；
嵌套的异常为java.lang.IllegalStateException:模板文件“./my content view.js”中没有id为='Vaadinancordion'的元素。无法使用@id'对其进行映射
org.springframework.beans.factory.BeanCreationException:创建名为“com.example.MainView”的bean时出错：bean实例化失败；
嵌套异常为org.springframework.beans.BeanInstantiationException:未能实例化[com.example.MainView]：构造函数引发异常；
嵌套的异常为java.lang.IllegalStateException:模板文件“./my content view.js”中没有id为='Vaadinancordion'的元素。无法使用@id对其进行映射
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.InstanceBean（AbstractAutowireCapableBeanFactory.java:1320）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance（AbstractAutowireCapableBeanFactory.java:1214）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:557）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:517）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:307）
在com.vaadin.flow.spring.SpringInstantiator.getOrCreate（SpringInstantiator.java:117）上
位于com.vaadin.flow.di.Instantiator.createRouteTarget（Instantiator.java:160）
位于com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.lambda$getRouteTarget$1（AbstractNavigationStateRenderer.java:133）
位于java.base/java.util.Optional.orElseGet（Optional.java:369）
位于com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.getRouteTarget（AbstractNavigationStateRenderer.java:132）
There was an exception while trying to navigate to '' with the exception message 'Error creating bean with name 'com.example.MainView': Instantiation of bean failed;
nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.example.MainView]: Constructor threw exception;
nested exception is java.lang.IllegalStateException: There is no element with id='vaadinAccordion' in the template file './my-content-view.js'. Cannot map it using @Id'
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.example.MainView': Instantiation of bean failed;
nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.example.MainView]: Constructor threw exception;
nested exception is java.lang.IllegalStateException: There is no element with id='vaadinAccordion' in the template file './my-content-view.js'. Cannot map it using @Id
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1320)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1214)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:307)
at com.vaadin.flow.spring.SpringInstantiator.getOrCreate(SpringInstantiator.java:117)
at com.vaadin.flow.di.Instantiator.createRouteTarget(Instantiator.java:160)
at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.lambda$getRouteTarget$1(AbstractNavigationStateRenderer.java:133)
at java.base/java.util.Optional.orElseGet(Optional.java:369)
at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.getRouteTarget(AbstractNavigationStateRenderer.java:132)
at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.sendBeforeEnterEventAndPopulateChain(AbstractNavigationStateRenderer.java:498)
at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.createChainIfEmptyAndExecuteBeforeEnterNavigation(AbstractNavigationStateRenderer.java:477)
at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.handle(AbstractNavigationStateRenderer.java:228)
at com.vaadin.flow.router.Router.handleNavigation(Router.java:249)
at com.vaadin.flow.router.Router.navigate(Router.java:220)
at com.vaadin.flow.router.Router.navigate(Router.java:186)
at com.vaadin.flow.router.Router.initializeUI(Router.java:93)
at com.vaadin.flow.server.BootstrapHandler.createAndInitUI(BootstrapHandler.java:1516)
at com.vaadin.flow.server.BootstrapHandler.synchronizedHandleRequest(BootstrapHandler.java:472)
at com.vaadin.flow.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40)
at com.vaadin.flow.server.VaadinService.handleRequest(VaadinService.java:1545)
at com.vaadin.flow.server.VaadinServlet.service(VaadinServlet.java:247)
at com.vaadin.flow.spring.SpringServlet.service(SpringServlet.java:120)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:712)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:352)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
at org.springframework.web.servlet.mvc.ServletForwardingController.handleRequestInternal(ServletForwardingController.java:141)
at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:177)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:52)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
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:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
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.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.example.MainView]: Constructor threw exception; nested exception is java.lang.IllegalStateException: There is no element with id='vaadinAccordion' in the template file './my-content-view.js'. Cannot map it using @Id
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:213)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1312)
... 72 more
Caused by: java.lang.IllegalStateException: There is no element with id='vaadinAccordion' in the template file './my-content-view.js'. Cannot map it using @Id
at com.vaadin.flow.component.polymertemplate.IdCollector.collectedInjectedId(IdCollector.java:106)
at com.vaadin.flow.component.polymertemplate.IdCollector.lambda$collectInjectedIds$1(IdCollector.java:78)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
at com.vaadin.flow.component.polymertemplate.IdCollector.collectInjectedIds(IdCollector.java:78)
at com.vaadin.flow.component.polymertemplate.IdCollector.collectInjectedIds(IdCollector.java:67)
at com.vaadin.flow.component.polymertemplate.TemplateDataAnalyzer.parseTemplate(TemplateDataAnalyzer.java:215)
at com.vaadin.flow.component.polymertemplate.TemplateInitializer.<init>(TemplateInitializer.java:91)
at com.vaadin.flow.component.polymertemplate.PolymerTemplate.<init>(PolymerTemplate.java:88)
at com.vaadin.flow.component.polymertemplate.PolymerTemplate.<init>(PolymerTemplate.java:103)
at com.example.MyContentView.<init>(MyContentView.java:38)
at com.example.MainView.display(MainView.java:38)
at com.example.MainView.<init>(MainView.java:26)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:200)
... 74 more
import {html, PolymerElement} from '@polymer/polymer/polymer-element.js';
import '@vaadin/vaadin-button/src/vaadin-button.js';
import '@vaadin/vaadin-charts/src/vaadin-chart.js';
import '@vaadin/vaadin-ordered-layout/src/vaadin-vertical-layout.js';
import '@vaadin/vaadin-ordered-layout/src/vaadin-horizontal-layout.js';
import '@vaadin/vaadin-date-picker/src/vaadin-date-picker.js';
import '@vaadin/vaadin-accordion/src/vaadin-accordion.js';
class MyContentView extends PolymerElement {
static get template() {
return html`
<style include="shared-styles">
:host {
display: block;
height: 100%;
}
</style>
<vaadin-horizontal-layout style="width: 100%; height: 100%;">
<vaadin-vertical-layout class="sidebar" style="flex-basis: calc(7*var(--lumo-size-s)); flex-shrink: 0; background-color: var(--lumo-contrast-5pct);">
<vaadin-vertical-layout theme="spacing" style="flex-grow: 1; align-self: stretch;">
<vaadin-vertical-layout theme="spacing" style="flex-grow: 1; align-self: stretch;">
<vaadin-button>
Button
</vaadin-button>
</vaadin-vertical-layout>
<vaadin-vertical-layout theme="spacing" style="flex-grow: 1; align-self: stretch;">
<vaadin-button theme="primary">
Primary
</vaadin-button>
</vaadin-vertical-layout>
</vaadin-vertical-layout>
<vaadin-vertical-layout theme="spacing" style="flex-grow: 1; align-self: stretch;">
<vaadin-button id="vaadinButton">
Button
</vaadin-button>
<vaadin-accordion></vaadin-accordion>
</vaadin-vertical-layout>
</vaadin-vertical-layout>
<vaadin-vertical-layout class="content" style="flex-grow: 1; flex-shrink: 1; flex-basis: auto;">
<vaadin-vertical-layout theme="spacing" style="align-self: stretch; height: 20%;">
<vaadin-chart type="pie" title="Browser market shares in January, 2018" tooltip="">
<vaadin-chart-series title="Brands" values="[["Chrome",61.41],["Internet Explorer",11.84],["Firefox",10.85],["Edge",4.67],["Safari",4.18],["Sogou Explorer",1.64],["Opera",1.6],["QQ",1.2],["Other",2.61]]"></vaadin-chart-series>
</vaadin-chart>
</vaadin-vertical-layout>
<vaadin-vertical-layout theme="spacing" style="align-self: stretch; flex-grow: 1;">
<vaadin-horizontal-layout theme="spacing" style="flex-grow: 1; height: 100%; align-self: stretch;">
<vaadin-vertical-layout theme="spacing" style="width: 30%;">
<vaadin-vertical-layout theme="margin" style="height: 50%; align-self: stretch; width: 100%; padding: var(--lumo-space-m);">
<label id="label1">Neuigkeiten - Letzter Monat</label>
</vaadin-vertical-layout>
<vaadin-vertical-layout theme="margin" style="height: 50%; align-self: stretch; flex-grow: 0; width: 100%; padding: var(--lumo-space-m);"></vaadin-vertical-layout>
</vaadin-vertical-layout>
<vaadin-vertical-layout theme="spacing" style="width: 100%;">
<vaadin-vertical-layout style="width: 100%; height: 50%;">
<label id="label">Meine Kurse</label>
</vaadin-vertical-layout>
<vaadin-vertical-layout style="width: 100%; height: 50%;"></vaadin-vertical-layout>
</vaadin-vertical-layout>
<vaadin-vertical-layout theme="spacing" style="width: 30%;">
<vaadin-vertical-layout theme="spacing" style="width: 100%; height: 50%; padding: var(--lumo-space-m);">
<label>Mail</label>
</vaadin-vertical-layout>
<vaadin-vertical-layout theme="spacing" style="width: 100%; height: 50%; padding: var(--lumo-space-m);">
<vaadin-date-picker label="Datum" placeholder="Pick a date" id="birthday">
Datum
</vaadin-date-picker>
</vaadin-vertical-layout>
</vaadin-vertical-layout>
</vaadin-horizontal-layout>
</vaadin-vertical-layout>
</vaadin-vertical-layout>
</vaadin-horizontal-layout>
`;
}
static get is() {
return 'my-content-view';
}
static get properties() {
return {
// Declare your properties here.
};
}
}
customElements.define(MyContentView.is, MyContentView);
There is no element with id='vaadinAccordion' in the template file