为什么这个具有基于 Java 的配置的 Spring 应用程序无法正常工作
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时间：2020-08-13 17:31:31 来源:igfitidea点击:
Why this Spring application with java-based configuration don't work properly
提问by Kleber Mota
I started recently a project with the Spring framework with the ojective to develop it without none XML config file, only Java code.
我最近开始了一个带有 Spring 框架的项目，目标是在没有 XML 配置文件的情况下开发它，只有 Java 代码。
In this current moment, I add the follow files to my project:
目前，我将以下文件添加到我的项目中：
WebAppConfig.java
WebAppConfig.java
@EnableWebMvc
@ComponentScan(value="org.webapp")
@Configuration
public class WebAppConfig extends WebMvcConfigurerAdapter {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/css/**").addResourceLocations("/css/").setCachePeriod(31556926);
registry.addResourceHandler("/css/**").addResourceLocations("/fonts/").setCachePeriod(31556926);
registry.addResourceHandler("/img/**").addResourceLocations("/image/").setCachePeriod(31556926);
registry.addResourceHandler("/js/**").addResourceLocations("/js/").setCachePeriod(31556926);
}
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
@Bean
public InternalResourceViewResolver getInternalResourceViewResolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/jsp/");
resolver.setSuffix(".jsp");
return resolver;
}
}
SecurityConfig.java
安全配置文件
@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
auth
.inMemoryAuthentication()
.withUser("kleber").password("123").roles("USER");
}
}
SecurityWebApplicationInitializer.java
SecurityWebApplicationInitializer.java
@Order(value=2)
public class SecurityWebApplicationInitializer extends AbstractSecurityWebApplicationInitializer {
public SecurityWebApplicationInitializer() {
super(SecurityConfig.class);
}
}
In this state, when I run the application (in Eclipse) the browser shows the default login form from Spring Security, and an error 404 after I submit this form. If I try enter directly the url localhost:8080/spring/index, I can access the page which should appears afeter the login form.
在这种状态下，当我运行应用程序（在 Eclipse 中）时，浏览器显示 Spring Security 的默认登录表单，并在我提交此表单后显示错误 404。如果我尝试直接输入 url localhost:8080/spring/index，我可以访问应该在登录表单之后出现的页面。
If I add this class:
如果我添加这个类：
WebAppInitializer.java
WebAppInitializer.java
@Order(value=1)
public class WebAppInitializer implements WebApplicationInitializer {
@Override
public void onStartup(ServletContext container) {
// Create the 'root' Spring application context
AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();
rootContext.register(WebAppConfig.class);
// Manage the lifecycle of the root application context
container.addListener(new ContextLoaderListener(rootContext));
// Create the dispatcher servlet's Spring application context
AnnotationConfigWebApplicationContext dispatcherContext = new AnnotationConfigWebApplicationContext();
dispatcherContext.register(DispatcherConfig.class);
// Register and map the dispatcher servlet
ServletRegistration.Dynamic dispatcher = container.addServlet("dispatcher", new DispatcherServlet(dispatcherContext));
dispatcher.setLoadOnStartup(1);
dispatcher.addMapping("/");
}
}
In replacement to web.xml, following the instructions from official documentation, in this link:
按照官方文档中的说明替换 web.xml，在此链接中：
I can't even access the login page. Same thing happens if I add to the class SecurityConfig the method:
我什至无法访问登录页面。如果我将方法添加到类 SecurityConfig 中，也会发生同样的事情：
protected void configure(HttpSecurity http) throws Exception {
http
.authorizeRequests()
.antMatchers("/css/**", "/fonts/**", "/image/**", "/js/**").permitAll()
.anyRequest().authenticated()
.and()
.formLogin()
.loginPage("spring/index").permitAll()
.failureUrl("spring/erro_login").permitAll()
.defaultSuccessUrl("spring/home")
.and()
.logout()
.logoutSuccessUrl("spring/logout")
.permitAll();
}
Someone can see what am I missing?
有人可以看到我错过了什么吗？
ps.:
附言：
My controler is this:
我的控制器是这样的：
@Controller
@RequestMapping(value="spring")
public class SpringController {
@RequestMapping(value="index")
public ModelAndView index() {
ModelAndView mav = new ModelAndView();
mav.setViewName("index");
return mav;
}
@RequestMapping(value="home")
public ModelAndView home() {
ModelAndView mav = new ModelAndView();
mav.setViewName("home");
return mav;
}
@RequestMapping(value="erro_login")
public ModelAndView erro_login() {
ModelAndView mav = new ModelAndView();
mav.setViewName("erro_login");
return mav;
}
@RequestMapping(value="erro_nao_autorizado")
public ModelAndView erro_nao_autorizado() {
ModelAndView mav = new ModelAndView();
mav.setViewName("erro_nao_autorizado");
return mav;
}
@RequestMapping(value="logout")
public ModelAndView logout() {
ModelAndView mav = new ModelAndView();
mav.setViewName("index");
return mav;
}
}
UPDATE
更新
This error is displayed in the console of Eclipse
Eclipse的控制台显示这个错误
Mar 29, 2014 1:28:02 PM org.apache.catalina.core.StandardContext listenerStart
Grave: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
java.lang.IllegalStateException: Cannot initialize context because there is already a root application context present - check whether you have multiple ContextLoader* definitions in your web.xml!
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:265)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4937)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
After the answer given to this topic, I try remove one of two conflicting registration of ContextListeners, from SecurityWebApplicationInitializer or WebAppInitializer. In both cases, I get this error:
在给出本主题的答案后，我尝试从 SecurityWebApplicationInitializer 或 WebAppInitializer 中删除两个冲突的 ContextListener 注册之一。在这两种情况下，我都会收到此错误：
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springSecurityFilterChain' defined in class org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public javax.servlet.Filter org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.springSecurityFilterChain() throws java.lang.Exception] threw exception; nested exception is java.lang.IllegalArgumentException: 'spring/index?error' is not a valid redirect URL
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:581)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1025)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:921)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:487)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:295)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:628)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:389)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:294)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4937)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public javax.servlet.Filter org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.springSecurityFilterChain() throws java.lang.Exception] threw exception; nested exception is java.lang.IllegalArgumentException: 'spring/index?error' is not a valid redirect URL
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:181)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:570)
... 23 more
Caused by: java.lang.IllegalArgumentException: 'spring/index?error' is not a valid redirect URL
at org.springframework.util.Assert.isTrue(Assert.java:65)
at org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler.setDefaultFailureUrl(SimpleUrlAuthenticationFailureHandler.java:98)
at org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler.<init>(SimpleUrlAuthenticationFailureHandler.java:43)
at org.springframework.security.config.annotation.web.configurers.AbstractAuthenticationFilterConfigurer.failureUrl(AbstractAuthenticationFilterConfigurer.java:199)
at org.springframework.security.config.annotation.web.configurers.AbstractAuthenticationFilterConfigurer.updateAuthenticationDefaults(AbstractAuthenticationFilterConfigurer.java:345)
at org.springframework.security.config.annotation.web.configurers.AbstractAuthenticationFilterConfigurer.loginPage(AbstractAuthenticationFilterConfigurer.java:285)
at org.springframework.security.config.annotation.web.configurers.FormLoginConfigurer.loginPage(FormLoginConfigurer.java:181)
at org.webapp.security.SecurityConfig.configure(SecurityConfig.java:27)
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter.getHttp(WebSecurityConfigurerAdapter.java:192)
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter.init(WebSecurityConfigurerAdapter.java:276)
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter.init(WebSecurityConfigurerAdapter.java:61)
at org.webapp.security.SecurityConfig$$EnhancerByCGLIB$$f93abbff.init(<generated>)
at org.springframework.security.config.annotation.AbstractConfiguredSecurityBuilder.init(AbstractConfiguredSecurityBuilder.java:369)
at org.springframework.security.config.annotation.AbstractConfiguredSecurityBuilder.doBuild(AbstractConfiguredSecurityBuilder.java:322)
at org.springframework.security.config.annotation.AbstractSecurityBuilder.build(AbstractSecurityBuilder.java:39)
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.springSecurityFilterChain(WebSecurityConfiguration.java:92)
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration$$EnhancerByCGLIB$d7a5f4.CGLIB$springSecurityFilterChainjava.lang.IllegalStateException: Cannot initialize context because there is already a root application context present - check whether you have multiple ContextLoader* definitions in your web.xml!
(<generated>)
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration$$EnhancerByCGLIB$d7a5f4$$FastClassByCGLIB$$eb934d27.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:286)
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration$$EnhancerByCGLIB$d7a5f4.springSecurityFilterChain(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:160)
... 24 more
Mar 29, 2014 4:18:30 PM org.apache.catalina.core.StandardContext listenerStart
Grave: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springSecurityFilterChain' defined in class org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public javax.servlet.Filter org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.springSecurityFilterChain() throws java.lang.Exception] threw exception; nested exception is java.lang.IllegalArgumentException: 'spring/index?error' is not a valid redirect URL
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:581)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1025)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:921)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:487)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:295)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:628)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:389)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:294)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4937)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public javax.servlet.Filter org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.springSecurityFilterChain() throws java.lang.Exception] threw exception; nested exception is java.lang.IllegalArgumentException: 'spring/index?error' is not a valid redirect URL
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:181)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:570)
... 23 more
Caused by: java.lang.IllegalArgumentException: 'spring/index?error' is not a valid redirect URL
at org.springframework.util.Assert.isTrue(Assert.java:65)
at org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler.setDefaultFailureUrl(SimpleUrlAuthenticationFailureHandler.java:98)
at org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler.<init>(SimpleUrlAuthenticationFailureHandler.java:43)
at org.springframework.security.config.annotation.web.configurers.AbstractAuthenticationFilterConfigurer.failureUrl(AbstractAuthenticationFilterConfigurer.java:199)
at org.springframework.security.config.annotation.web.configurers.AbstractAuthenticationFilterConfigurer.updateAuthenticationDefaults(AbstractAuthenticationFilterConfigurer.java:345)
at org.springframework.security.config.annotation.web.configurers.AbstractAuthenticationFilterConfigurer.loginPage(AbstractAuthenticationFilterConfigurer.java:285)
at org.springframework.security.config.annotation.web.configurers.FormLoginConfigurer.loginPage(FormLoginConfigurer.java:181)
at org.webapp.security.SecurityConfig.configure(SecurityConfig.java:27)
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter.getHttp(WebSecurityConfigurerAdapter.java:192)
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter.init(WebSecurityConfigurerAdapter.java:276)
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter.init(WebSecurityConfigurerAdapter.java:61)
at org.webapp.security.SecurityConfig$$EnhancerByCGLIB$$f93abbff.init(<generated>)
at org.springframework.security.config.annotation.AbstractConfiguredSecurityBuilder.init(AbstractConfiguredSecurityBuilder.java:369)
at org.springframework.security.config.annotation.AbstractConfiguredSecurityBuilder.doBuild(AbstractConfiguredSecurityBuilder.java:322)
at org.springframework.security.config.annotation.AbstractSecurityBuilder.build(AbstractSecurityBuilder.java:39)
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.springSecurityFilterChain(WebSecurityConfiguration.java:92)
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration$$EnhancerByCGLIB$d7a5f4.CGLIB$springSecurityFilterChain.loginPage("spring/index").permitAll()
(<generated>)
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration$$EnhancerByCGLIB$d7a5f4$$FastClassByCGLIB$$eb934d27.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:286)
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration$$EnhancerByCGLIB$d7a5f4.springSecurityFilterChain(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:160)
... 24 more
采纳答案by Sotirios Delimanolis
.loginPage("/spring/index").permitAll() //note the '/' at the beginning of the uri
In your WebAppInitializer, you are registering a ContextLoaderListener.
在您WebAppInitializer的ContextLoaderListener.
Because you are using AbstractSecurityWebApplicationInitializerwith the superconstructor that accepts a Class[]
因为您正在使用接受一个AbstractSecurityWebApplicationInitializer的super构造函数Class[]
Creates a new instance that will instantiate the ContextLoaderListener with the specified classes.
创建一个新实例，该实例将使用指定的类实例化 ContextLoaderListener。
that also registers a ContextLoaderListener. Note the class javadoc
这也注册了一个ContextLoaderListener. 注意类 javadoc
When used with
AbstractSecurityWebApplicationInitializer(Class...), it will also register aContextLoaderListener. When used withAbstractSecurityWebApplicationInitializer(), this class is typically used in addition to a subclass ofAbstractContextLoaderInitializer.
当与 一起使用时
AbstractSecurityWebApplicationInitializer(Class...)，它还会注册一个ContextLoaderListener. 与 一起AbstractSecurityWebApplicationInitializer()使用时，除了 的子类之外，通常还使用此类AbstractContextLoaderInitializer。
As the error states, you cannot have two ContextLoaderListenerinstances because they will both try to create and add a ApplicationContextto the ServletContext.
正如错误所述，您不能有两个ContextLoaderListener实例，因为它们都将尝试创建并将 a 添加ApplicationContext到ServletContext.
回答by mario
I think the problem is that this:
我认为问题在于：
##代码##should be this:
应该是这样的：
##代码##回答by smwikipedia
Maybe there're some conflicting overlapping between your web.xmland java-based configuration class. That's the root cause when I met the same error as you. And my solution is to comment out the duplicated configuration in web.xml.
也许您的web.xml和基于 java 的configuration class. 当我遇到和你一样的错误时，这就是根本原因。而我的解决方案是注释掉web.xml.
回答by ropo
I had a class
我有一堂课
MyContextLoaderListener extends ContextLoaderListener
MyContextLoaderListener 扩展了 ContextLoaderListener
somewhere in my code. It was unused. Spring boot apparently used reflection to find it. I deleted the file and the problem was gone
在我的代码中的某个地方。它没有使用。Spring Boot 显然使用反射来找到它。我删除了文件，问题消失了
