Spring框架系列(13) – SpringMVC实现原理之DispatcherServlet的初始化过程

技术分享 3年前 (2022-07-05) 0 999+

前文我们有了IOC的源码基础以及SpringMVC的基础，我们便可以进一步深入理解SpringMVC主要实现原理，包含DispatcherServlet的初始化过程和DispatcherServlet处理请求的过程的源码解析。本文是第一篇：DispatcherServlet的初始化过程的源码解析。@pdai

Spring框架系列(13) - SpringMVC实现原理之DispatcherServlet的初始化过程

DispatcherServlet和ApplicationContext有何关系？

DispatcherServlet 作为一个 Servlet，需要根据 Servlet 规范使用 Java 配置或 web.xml 声明和映射。反过来，DispatcherServlet 使用 Spring 配置来发现请求映射、视图解析、异常处理等等所需的委托组件。那它和ApplicationContext有和关系呢？如下内容可以参考官网-SpringMVC文档

DispatcherServlet 需要 WebApplicationContext（继承自 ApplicationContext）来配置。WebApplicationContext 可以链接到ServletContext 和 Servlet。因为绑定了 ServletContext，这样应用程序就可以在需要的时候使用 RequestContextUtils 的静态方法访问 WebApplicationContext。

大多数应用程序只有一个WebApplicationContext，除此之外也可以一个Root WebApplicationContext 被多个 Servlet实例，然后各自拥有自己的Servlet WebApplicationContext 配置。

Root WebApplicationContext 包含需要共享给多个 Servlet 实例的数据源和业务服务基础 Bean。这些 Bean 可以在 Servlet 特定的范围被继承或覆盖。

（PS：官网上的这张图可以可以帮助你构建DispatcherServlet和ApplicationContext在设计上的认知，这一点对于理解DispatcherServlet的设计和初始化过程非常重要）

DispatcherServlet是如何初始化的？

DispatcherServlet首先是Sevlet，Servlet有自己的生命周期的方法（init,destory等），那么我们在看DispatcherServlet初始化时首先需要看源码中DispatcherServlet的类结构设计。

首先我们看DispatcherServlet的类结构关系，在这个类依赖结构中找到init的方法

很容易找到init()的方法位于HttpServletBean中，然后跑Spring基础 - SpringMVC请求流程和案例中的代码，在init方法中打断点。

init

init()方法如下, 主要读取web.xml中servlet参数配置，并将交给子类方法initServletBean()继续初始化

/**   * Map config parameters onto bean properties of this servlet, and   * invoke subclass initialization.   * @throws ServletException if bean properties are invalid (or required   * properties are missing), or if subclass initialization fails.   */ @Override public final void init() throws ServletException {    // 读取web.xml中的servlet配置   PropertyValues pvs = new ServletConfigPropertyValues(getServletConfig(), this.requiredProperties);   if (!pvs.isEmpty()) {     try {       // 转换成BeanWrapper，为了方便使用Spring的属性注入功能       BeanWrapper bw = PropertyAccessorFactory.forBeanPropertyAccess(this);       // 注入Resource类型需要依赖于ResourceEditor解析，所以注册Resource类关联到ResourceEditor解析器       ResourceLoader resourceLoader = new ServletContextResourceLoader(getServletContext());       bw.registerCustomEditor(Resource.class, new ResourceEditor(resourceLoader, getEnvironment()));       // 更多的初始化可以让子类去拓展       initBeanWrapper(bw);       // 让spring注入namespace,contextConfigLocation等属性       bw.setPropertyValues(pvs, true);     }     catch (BeansException ex) {       if (logger.isErrorEnabled()) {         logger.error("Failed to set bean properties on servlet '" + getServletName() + "'", ex);       }       throw ex;     }   }    // 让子类去拓展   initServletBean(); }

读取配置可以从下图看出，正是初始化了我们web.xml中配置

再看下initServletBean()方法，位于FrameworkServlet类中

/**   * Overridden method of {@link HttpServletBean}, invoked after any bean properties   * have been set. Creates this servlet's WebApplicationContext.   */ @Override protected final void initServletBean() throws ServletException {   getServletContext().log("Initializing Spring " + getClass().getSimpleName() + " '" + getServletName() + "'");   if (logger.isInfoEnabled()) {     logger.info("Initializing Servlet '" + getServletName() + "'");   }   long startTime = System.currentTimeMillis();    try {     // 最重要的是这个方法     this.webApplicationContext = initWebApplicationContext();      // 可以让子类进一步拓展     initFrameworkServlet();   }   catch (ServletException | RuntimeException ex) {     logger.error("Context initialization failed", ex);     throw ex;   }    if (logger.isDebugEnabled()) {     String value = this.enableLoggingRequestDetails ?         "shown which may lead to unsafe logging of potentially sensitive data" :         "masked to prevent unsafe logging of potentially sensitive data";     logger.debug("enableLoggingRequestDetails='" + this.enableLoggingRequestDetails +         "': request parameters and headers will be " + value);   }    if (logger.isInfoEnabled()) {     logger.info("Completed initialization in " + (System.currentTimeMillis() - startTime) + " ms");   } }

initWebApplicationContext

initWebApplicationContext用来初始化和刷新WebApplicationContext。

initWebApplicationContext() 方法如下

/**   * Initialize and publish the WebApplicationContext for this servlet.   * <p>Delegates to {@link #createWebApplicationContext} for actual creation   * of the context. Can be overridden in subclasses.   * @return the WebApplicationContext instance   * @see #FrameworkServlet(WebApplicationContext)   * @see #setContextClass   * @see #setContextConfigLocation   */ protected WebApplicationContext initWebApplicationContext() {   WebApplicationContext rootContext =       WebApplicationContextUtils.getWebApplicationContext(getServletContext());   WebApplicationContext wac = null;    // 如果在构造函数已经被初始化   if (this.webApplicationContext != null) {     // A context instance was injected at construction time -> use it     wac = this.webApplicationContext;     if (wac instanceof ConfigurableWebApplicationContext) {       ConfigurableWebApplicationContext cwac = (ConfigurableWebApplicationContext) wac;       if (!cwac.isActive()) {         // The context has not yet been refreshed -> provide services such as         // setting the parent context, setting the application context id, etc         if (cwac.getParent() == null) {           // The context instance was injected without an explicit parent -> set           // the root application context (if any; may be null) as the parent           cwac.setParent(rootContext);         }         configureAndRefreshWebApplicationContext(cwac);       }     }   }   // 没有在构造函数中初始化，则尝试通过contextAttribute初始化   if (wac == null) {     // No context instance was injected at construction time -> see if one     // has been registered in the servlet context. If one exists, it is assumed     // that the parent context (if any) has already been set and that the     // user has performed any initialization such as setting the context id     wac = findWebApplicationContext();   }    // 还没有的话，只能重新创建了   if (wac == null) {     // No context instance is defined for this servlet -> create a local one     wac = createWebApplicationContext(rootContext);   }    if (!this.refreshEventReceived) {     // Either the context is not a ConfigurableApplicationContext with refresh     // support or the context injected at construction time had already been     // refreshed -> trigger initial onRefresh manually here.     synchronized (this.onRefreshMonitor) {       onRefresh(wac);     }   }    if (this.publishContext) {     // Publish the context as a servlet context attribute.     String attrName = getServletContextAttributeName();     getServletContext().setAttribute(attrName, wac);   }    return wac; }

webApplicationContext只会初始化一次，依次尝试构造函数初始化，没有则通过contextAttribute初始化，仍没有则创建新的

创建的createWebApplicationContext方法如下

/**   * Instantiate the WebApplicationContext for this servlet, either a default   * {@link org.springframework.web.context.support.XmlWebApplicationContext}   * or a {@link #setContextClass custom context class}, if set.   * <p>This implementation expects custom contexts to implement the   * {@link org.springframework.web.context.ConfigurableWebApplicationContext}   * interface. Can be overridden in subclasses.   * <p>Do not forget to register this servlet instance as application listener on the   * created context (for triggering its {@link #onRefresh callback}, and to call   * {@link org.springframework.context.ConfigurableApplicationContext#refresh()}   * before returning the context instance.   * @param parent the parent ApplicationContext to use, or {@code null} if none   * @return the WebApplicationContext for this servlet   * @see org.springframework.web.context.support.XmlWebApplicationContext   */ protected WebApplicationContext createWebApplicationContext(@Nullable ApplicationContext parent) {   Class<?> contextClass = getContextClass();   if (!ConfigurableWebApplicationContext.class.isAssignableFrom(contextClass)) {     throw new ApplicationContextException(         "Fatal initialization error in servlet with name '" + getServletName() +         "': custom WebApplicationContext class [" + contextClass.getName() +         "] is not of type ConfigurableWebApplicationContext");   }    // 通过反射方式初始化   ConfigurableWebApplicationContext wac =       (ConfigurableWebApplicationContext) BeanUtils.instantiateClass(contextClass);    wac.setEnvironment(getEnvironment());   wac.setParent(parent);   String configLocation = getContextConfigLocation(); // 就是前面Demo中的springmvc.xml   if (configLocation != null) {     wac.setConfigLocation(configLocation);   }    // 初始化Spring环境   configureAndRefreshWebApplicationContext(wac);    return wac; }

configureAndRefreshWebApplicationContext方法初始化设置Spring环境

protected void configureAndRefreshWebApplicationContext(ConfigurableWebApplicationContext wac) {   // 设置context ID   if (ObjectUtils.identityToString(wac).equals(wac.getId())) {     // The application context id is still set to its original default value     // -> assign a more useful id based on available information     if (this.contextId != null) {       wac.setId(this.contextId);     }     else {       // Generate default id...       wac.setId(ConfigurableWebApplicationContext.APPLICATION_CONTEXT_ID_PREFIX +           ObjectUtils.getDisplayString(getServletContext().getContextPath()) + '/' + getServletName());     }   }    // 设置servletContext, servletConfig, namespace, listener...   wac.setServletContext(getServletContext());   wac.setServletConfig(getServletConfig());   wac.setNamespace(getNamespace());   wac.addApplicationListener(new SourceFilteringListener(wac, new ContextRefreshListener()));    // The wac environment's #initPropertySources will be called in any case when the context   // is refreshed; do it eagerly here to ensure servlet property sources are in place for   // use in any post-processing or initialization that occurs below prior to #refresh   ConfigurableEnvironment env = wac.getEnvironment();   if (env instanceof ConfigurableWebEnvironment) {     ((ConfigurableWebEnvironment) env).initPropertySources(getServletContext(), getServletConfig());   }    // 让子类去拓展   postProcessWebApplicationContext(wac);   applyInitializers(wac);    // Spring环境初始化完了，就可以初始化DispatcherServlet处理流程中需要的组件了。   wac.refresh(); }

refresh

有了webApplicationContext后，就开始刷新了（onRefresh()方法），这个方法是FrameworkServlet提供的模板方法，由子类DispatcherServlet来实现的。

/**   * This implementation calls {@link #initStrategies}.   */ @Override protected void onRefresh(ApplicationContext context) {   initStrategies(context); }

刷新主要是调用initStrategies(context)方法对DispatcherServlet中的组件进行初始化，这些组件就是在SpringMVC请求流程中包的主要组件。

/**   * Initialize the strategy objects that this servlet uses.   * <p>May be overridden in subclasses in order to initialize further strategy objects.   */ protected void initStrategies(ApplicationContext context) {   initMultipartResolver(context);   initLocaleResolver(context);   initThemeResolver(context);    // 主要看如下三个方法   initHandlerMappings(context);   initHandlerAdapters(context);   initHandlerExceptionResolvers(context);    initRequestToViewNameTranslator(context);   initViewResolvers(context);   initFlashMapManager(context); }

initHanlderxxx

我们主要看initHandlerXXX相关的方法，它们之间的关系可以看SpringMVC的请求流程：

HandlerMapping是映射处理器
HandlerAdpter是处理适配器，它用来找到你的Controller中的处理方法
HandlerExceptionResolver是当遇到处理异常时的异常解析器

initHandlerMapping方法如下，无非就是获取按照优先级排序后的HanlderMappings, 将来匹配时按照优先级最高的HanderMapping进行处理。

initHandlerAdapters方法和initHandlerExceptionResolvers方法也是类似的，如果没有找到，那就构建默认的。

/**   * Initialize the HandlerAdapters used by this class.   * <p>If no HandlerAdapter beans are defined in the BeanFactory for this namespace,   * we default to SimpleControllerHandlerAdapter.   */ private void initHandlerAdapters(ApplicationContext context) {   this.handlerAdapters = null;    if (this.detectAllHandlerAdapters) {     // Find all HandlerAdapters in the ApplicationContext, including ancestor contexts.     Map<String, HandlerAdapter> matchingBeans =         BeanFactoryUtils.beansOfTypeIncludingAncestors(context, HandlerAdapter.class, true, false);     if (!matchingBeans.isEmpty()) {       this.handlerAdapters = new ArrayList<>(matchingBeans.values());       // We keep HandlerAdapters in sorted order.       AnnotationAwareOrderComparator.sort(this.handlerAdapters);     }   }   else {     try {       HandlerAdapter ha = context.getBean(HANDLER_ADAPTER_BEAN_NAME, HandlerAdapter.class);       this.handlerAdapters = Collections.singletonList(ha);     }     catch (NoSuchBeanDefinitionException ex) {       // Ignore, we'll add a default HandlerAdapter later.     }   }    // Ensure we have at least some HandlerAdapters, by registering   // default HandlerAdapters if no other adapters are found.   if (this.handlerAdapters == null) {     this.handlerAdapters = getDefaultStrategies(context, HandlerAdapter.class);     if (logger.isTraceEnabled()) {       logger.trace("No HandlerAdapters declared for servlet '" + getServletName() +           "': using default strategies from DispatcherServlet.properties");     }   } }  /**   * Initialize the HandlerExceptionResolver used by this class.   * <p>If no bean is defined with the given name in the BeanFactory for this namespace,   * we default to no exception resolver.   */ private void initHandlerExceptionResolvers(ApplicationContext context) {   this.handlerExceptionResolvers = null;    if (this.detectAllHandlerExceptionResolvers) {     // Find all HandlerExceptionResolvers in the ApplicationContext, including ancestor contexts.     Map<String, HandlerExceptionResolver> matchingBeans = BeanFactoryUtils         .beansOfTypeIncludingAncestors(context, HandlerExceptionResolver.class, true, false);     if (!matchingBeans.isEmpty()) {       this.handlerExceptionResolvers = new ArrayList<>(matchingBeans.values());       // We keep HandlerExceptionResolvers in sorted order.       AnnotationAwareOrderComparator.sort(this.handlerExceptionResolvers);     }   }   else {     try {       HandlerExceptionResolver her =           context.getBean(HANDLER_EXCEPTION_RESOLVER_BEAN_NAME, HandlerExceptionResolver.class);       this.handlerExceptionResolvers = Collections.singletonList(her);     }     catch (NoSuchBeanDefinitionException ex) {       // Ignore, no HandlerExceptionResolver is fine too.     }   }    // Ensure we have at least some HandlerExceptionResolvers, by registering   // default HandlerExceptionResolvers if no other resolvers are found.   if (this.handlerExceptionResolvers == null) {     this.handlerExceptionResolvers = getDefaultStrategies(context, HandlerExceptionResolver.class);     if (logger.isTraceEnabled()) {       logger.trace("No HandlerExceptionResolvers declared in servlet '" + getServletName() +           "': using default strategies from DispatcherServlet.properties");     }   } }

最后我们看下初始化的日志：

21:30:33.163 [RMI TCP Connection(2)-127.0.0.1] INFO org.springframework.web.servlet.DispatcherServlet - Initializing Servlet 'springmvc-demo' 21:30:38.242 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.web.context.support.XmlWebApplicationContext - Refreshing WebApplicationContext for namespace 'springmvc-demo-servlet' 21:30:39.256 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.context.annotation.ClassPathBeanDefinitionScanner - Identified candidate component class: file [/Users/pdai/pdai/www/tech-pdai-spring-demos/011-spring-framework-demo-springmvc/target/011-spring-framework-demo-springmvc-1.0-SNAPSHOT/WEB-INF/classes/tech/pdai/springframework/springmvc/controller/UserController.class] 21:30:39.261 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.context.annotation.ClassPathBeanDefinitionScanner - Identified candidate component class: file [/Users/pdai/pdai/www/tech-pdai-spring-demos/011-spring-framework-demo-springmvc/target/011-spring-framework-demo-springmvc-1.0-SNAPSHOT/WEB-INF/classes/tech/pdai/springframework/springmvc/dao/UserDaoImpl.class] 21:30:39.274 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.context.annotation.ClassPathBeanDefinitionScanner - Identified candidate component class: file [/Users/pdai/pdai/www/tech-pdai-spring-demos/011-spring-framework-demo-springmvc/target/011-spring-framework-demo-springmvc-1.0-SNAPSHOT/WEB-INF/classes/tech/pdai/springframework/springmvc/service/UserServiceImpl.class] 21:30:39.546 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Loaded 29 bean definitions from class path resource [springmvc.xml] 21:30:39.711 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor' 21:30:39.973 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.event.internalEventListenerProcessor' 21:30:39.984 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.event.internalEventListenerFactory' 21:30:39.995 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor' 21:30:40.003 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.internalCommonAnnotationProcessor' 21:30:40.042 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.ui.context.support.UiApplicationContextUtils - Unable to locate ThemeSource with name 'themeSource': using default [org.springframework.ui.context.support.ResourceBundleThemeSource@791af912] 21:30:40.052 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'userController' 21:30:40.136 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'userServiceImpl' 21:30:40.140 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'userDaoImpl' 21:30:40.147 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler#0' 21:30:40.153 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.handler.SimpleUrlHandlerMapping#0' 21:30:40.350 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.handler.MappedInterceptor#0' 21:30:40.356 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.format.support.FormattingConversionServiceFactoryBean#0' 21:30:40.741 [RMI TCP Connection(2)-127.0.0.1] DEBUG _org.springframework.web.servlet.HandlerMapping.Mappings - 'org.springframework.web.servlet.handler.SimpleUrlHandlerMapping#0' {/**=org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler@216c0f1f} 21:30:40.742 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'mvcCorsConfigurations' 21:30:40.742 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping' 21:30:40.792 [RMI TCP Connection(2)-127.0.0.1] DEBUG _org.springframework.web.servlet.HandlerMapping.Mappings - 'org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping' {} 21:30:40.792 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter' 21:30:40.793 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter' 21:30:40.794 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'localeResolver' 21:30:40.796 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'themeResolver' 21:30:40.798 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'viewNameTranslator' 21:30:40.799 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'flashMapManager' 21:30:40.805 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'mvcContentNegotiationManager' 21:30:40.887 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping' 21:30:41.150 [RMI TCP Connection(2)-127.0.0.1] DEBUG _org.springframework.web.servlet.HandlerMapping.Mappings -  	t.p.s.s.c.UserController: 	{ [/user]}: list(HttpServletRequest,HttpServletResponse) 21:30:41.202 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - 1 mappings in 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping' 21:30:41.202 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter' 21:30:41.626 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter - ControllerAdvice beans: none 21:30:41.738 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'mvcUriComponentsContributor' 21:30:41.786 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter - ControllerAdvice beans: none 21:30:41.806 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver#0' 21:30:41.919 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver - ControllerAdvice beans: none 21:30:41.920 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver#0' 21:30:41.949 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver#0' 21:30:41.967 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'jspViewResolver' 21:30:44.214 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.web.servlet.DispatcherServlet - Detected AcceptHeaderLocaleResolver 21:30:44.214 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.web.servlet.DispatcherServlet - Detected FixedThemeResolver 21:31:02.141 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.web.servlet.DispatcherServlet - Detected org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator@d57bc91 21:31:03.483 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.web.servlet.DispatcherServlet - Detected org.springframework.web.servlet.support.SessionFlashMapManager@2b4e795e 21:44:08.180 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.jndi.JndiTemplate - Looking up JNDI object with name [java:comp/env/spring.liveBeansView.mbeanDomain] 21:44:08.185 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.jndi.JndiLocatorDelegate - Converted JNDI name [java:comp/env/spring.liveBeansView.mbeanDomain] not found - trying original name [spring.liveBeansView.mbeanDomain]. javax.naming.NameNotFoundException: 名称[spring.liveBeansView.mbeanDomain]未在此上下文中绑定。找不到[spring.liveBeansView.mbeanDomain]。 21:44:08.185 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.jndi.JndiTemplate - Looking up JNDI object with name [spring.liveBeansView.mbeanDomain] 21:44:08.185 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.jndi.JndiPropertySource - JNDI lookup for name [spring.liveBeansView.mbeanDomain] threw NamingException with message: 名称[spring.liveBeansView.mbeanDomain]未在此上下文中绑定。找不到[spring.liveBeansView.mbeanDomain]。. Returning null. 21:44:08.195 [RMI TCP Connection(2)-127.0.0.1] DEBUG org.springframework.web.servlet.DispatcherServlet - enableLoggingRequestDetails='false': request parameters and headers will be masked to prevent unsafe logging of potentially sensitive data 21:44:08.195 [RMI TCP Connection(2)-127.0.0.1] INFO org.springframework.web.servlet.DispatcherServlet - Completed initialization in 815032 ms