我有一个简单的Spring MVC应用程序，带有一个jsp和一个 Controller 类，部署在tomcat服务器中。该设置适用于多个请求。我已将 Controller 类命名为com.mypackage.mvcController。

现在，我使用jvisualvm查找创建此特定 Controller 类的实例数。它显示2。

<!DOCTYPE web-app PUBLIC 
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" 
 "http://java.sun.com/dtd/web-app_2_3.dtd" > 
 
<web-app> 
    <display-name>Archetype Created Web Application</display-name> 
    <context-param> 
        <param-name>contextConfigLocation</param-name> 
        <param-value>/WEB-INF/mvc-dispatcher-servlet.xml</param-value> 
    </context-param> 
    <listener> 
        <listener-class> 
            org.springframework.web.context.ContextLoaderListener 
        </listener-class> 
    </listener> 
    <servlet> 
        <servlet-name>mvc-dispatcher</servlet-name> 
        <servlet-class> 
            org.springframework.web.servlet.DispatcherServlet 
        </servlet-class> 
        <load-on-startup>1</load-on-startup> 
    </servlet> 
    <servlet-mapping> 
        <servlet-name>mvc-dispatcher</servlet-name> 
        <url-pattern>/</url-pattern> 
    </servlet-mapping> 
    <welcome-file-list> 
        <welcome-file>/WEB-INF/pages/welcome.jsp</welcome-file> 
    </welcome-file-list> 
 
</web-app> 

<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:context="http://www.springframework.org/schema/context" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation=" 
        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-3.0.xsd"> 
 
    <context:component-scan base-package="com.myPackage" /> 
 
    <bean 
        class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
        <property name="prefix"> 
            <value>/WEB-INF/pages/</value> 
        </property> 
        <property name="suffix"> 
            <value>.jsp</value> 
        </property> 
    </bean> 
 
</beans> 

 package com.myPackage; 
 
    import org.springframework.stereotype.Controller; 
    import org.springframework.web.bind.annotation.RequestMapping; 
 
    @Controller 
    @RequestMapping("serverHit") 
    public class mvcController { 
 
        @RequestMapping 
        public String sayHello() { 
            System.out.println("spring test"); 
            return "result"; 
        } 
    } 

请您参考如下方法:

您正在两次加载上下文。