我已经阅读了有关在Spring上调用两次方法的所有问题，但我无法解决此问题。
我使用注释@Scheduled不时运行任务。
@Scheduled(fixedDelay = 60000)
public void getTickets() {
Tomcat运行WebApplicationContext
.16:33:00.598 [localhost-startStop-1] INFO o.s.web.context.ContextLoader - Root WebApplicationContext: initialization started
.16:33:00.752 [localhost-startStop-1] INFO o.s.w.c.s.XmlWebApplicationContext - Refreshing Root WebApplicationContext: startup date [Fri Jul 11 16:33:00 BRT 2014]; root of context hierarchy
.16:33:00.835 [localhost-startStop-1] INFO o.s.b.f.xml.XmlBeanDefinitionReader - Loading XML bean definitions from ServletContext resource [/WEB-INF/applicationContext.xml] ...
和servlet上下文。
.16:33:01.614 [localhost-startStop-1] INFO o.s.web.servlet.DispatcherServlet - FrameworkServlet 'my-context': initialization started
.16:33:01.620 [localhost-startStop-1] INFO o.s.w.c.s.XmlWebApplicationContext - Refreshing WebApplicationContext for namespace 'my-context-servlet': startup date [Fri Jul 11 16:33:01 BRT 2014]; parent: Root WebApplicationContext
.16:33:01.621 [localhost-startStop-1] INFO o.s.b.f.xml.XmlBeanDefinitionReader - Loading XML bean definitions from ServletContext resource [/WEB-INF/my-context-servlet.xml]
然后我的方法被调用两次。
我认为有两种选择：
1 - 删除Root WebApplicationContext。
有可能吗？当我删除那段代码时：
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
我无法从我的网络应用程序中获取任何内容。
GRAVE: Servlet.service() for servlet [my-context] in context with path [] threw exception java.lang.IllegalStateException: No WebApplicationContext found: no ContextLoaderListener registered?
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:252)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
2 - ＆＃34;过滤＆＃34;从根上下文出来的课程
可以这样做吗？
这是我的完整web.xml。
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>my-context</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>my-context</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- Spring Security -->
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy
</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
感谢您解决此问题的任何帮助。
感谢。
答案 0 :(得分：4)
@Evgeni可能是对的，你的bean被实例化了两次。
这对我有用。请注意，在此设置中，将计划的注释放在未从dispatcher-servlet.xml调用的位置是很重要的。为了可维护性，我将所有预定例程保存在* .utilities.scheduledRoutines下。
<强>的web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<!-- Creates the Spring Container shared by all Servlets and Filters -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>net.xyz.ncc.utilities.ShutdownListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/security-config.xml,classpath:spring/app-config.xml,/WEB-INF/spring/servlet-context.xml</param-value>
</context-param>
<!-- Handles all requests into the application -->
<servlet>
<servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring/dispatcher-servlet.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- Spring Security -->
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
<强>调度-servlet.xml中
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">
<context:component-scan base-package="net.xyz.ncc.controller" />
<!-- Configures support for @Controllers -->
<mvc:annotation-driven />
<!-- Resolves view names to protected .jsp resources within the /WEB-INF/views directory -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
<强> servlet的context.xml中
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:task="http://www.springframework.org/schema/task"
xsi:schemaLocation="http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.1.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">
<context:component-scan base-package="net.xyz.ncc" />
<task:annotation-driven executor="taskExecutor" scheduler="taskScheduler" />
<task:executor id="taskExecutor" pool-size="1" />
<task:scheduler id="taskScheduler" pool-size="1" />
</beans>