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。
这是我的配置:
web.xml
<!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>
mvc-dispatcher-servlet.xml文件
<?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>
和项目结构:
Controller 类:
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";
}
}
最佳答案
您正在两次加载上下文。
看看这个:
Why use context loader listener?
关于spring - 为什么在Spring MVC应用程序中创建两个Spring bean Controller 实例?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/26254720/