<?xml version="1.0" encoding="utf-8" ?>
<web-app 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_3_0.xsd"
         id="WebApp_ID" version="3.0">

    <!-- 首頁 -->
    <welcome-file-list>
        <welcome-file>/jsp/WEB/index.jsp</welcome-file>
    </welcome-file-list>
    <!--Session失效時間-->
    <session-config>
        <session-timeout>-1</session-timeout>
    </session-config>

    <!--在應用啟動時，同步通話記錄-->
    <listener>
        <listener-class>com.casic.zjo2o.listener.CallRecordSyncListener</listener-class>
    </listener>

    <!-- #######################配置Spring配置檔案路徑####################### -->
    <!-- <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            classpath:spring.xml
            classpath:net/bull/javamelody/monitoring-spring.xml
        </param-value>
    </context-param> -->

    <!-- #######################配置Spring上下文監聽器####################### -->
    <!-- <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener> -->


   <!-- <filter>
        <filter-name>monitoring</filter-name>
        <filter-class>net.bull.javamelody.MonitoringFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>monitoring</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <listener>
        <listener-class>net.bull.javamelody.SessionListener</listener-class>
    </listener>-->

    <!-- #######################對請求的字元編碼進行統一處理####################### -->
    <filter>
        <filter-name>CharacterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!--  #######################Session超時過濾處理#######################-->
    <filter>
        <filter-name>sessionFilter</filter-name>
        <filter-class>com.casic.zjo2o.common.filter.SessionFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>sessionFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- #######################Spring MVC 核心控制器 DispatcherServlet 配置####################### -->
    <servlet>
        <servlet-name>SpringMVC Dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
        <async-supported>true</async-supported>
    </servlet>
    <servlet-mapping>
        <servlet-name>SpringMVC Dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.js</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.css</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.jpg</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.png</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.json</url-pattern>
    </servlet-mapping>

    <!-- servlet 'disuz_uc_api' 用於接收Discuz UCenter的同步訊息， 此項配置必須有。（可適當調整 load-on-startup引數） -->
    <servlet>
        <servlet-name>disuz_uc_api</servlet-name>
        <servlet-class>com.casic.zjo2o.bbs.api.UC</servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>disuz_uc_api</servlet-name>
        <url-pattern>/api/uc.php</url-pattern>
    </servlet-mapping>

    <!-- #######################獲得專案的絕對路徑####################### -->
    <context-param>
        <param-name>webAppRootKey</param-name>
        <param-value>ft.webapp</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.util.WebAppRootListener</listener-class>
    </listener>
</web-app>
 

上面是解決問題之後的web.xml檔案

註釋掉如下程式碼：

<!-- #######################配置Spring配置檔案路徑####################### -->
    <!-- <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            classpath:spring.xml
            classpath:net/bull/javamelody/monitoring-spring.xml
        </param-value>
    </context-param> -->

    <!-- #######################配置Spring上下文監聽器####################### -->
    <!-- <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener> -->
 

然後確保org.springframework.web.servlet.DispatcherServlet在啟動的時候把spring的入口xml檔案載入到了容器中去

程式碼如下：

<!-- #######################Spring MVC 核心控制器 DispatcherServlet 配置####################### -->
    <servlet>
        <servlet-name>SpringMVC Dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
        <async-supported>true</async-supported>
    </servlet>
 

問題原因分析：在服務啟動的時候，spring 容器被啟動了兩次，所以導致定時任務的重複執行。