jsp+spring调用配置

最新推荐文章于 2021-08-24 10:02:06 发布

原创最新推荐文章于 2021-08-24 10:02:06 发布 · 955 阅读

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文章标签：

#spring #jsp #import #class #java

本文介绍如何在Spring MVC项目中通过web.xml配置ContextLoaderServlet加载Spring配置文件，并创建一个计数器Bean实例。该示例展示了如何在JSP页面上获取并显示计数器Bean的值。

web.xml配置

<servlet>
  <servlet-name>context</servlet-name>
  <servlet-class>
   org.springframework.web.context.ContextLoaderServlet
  </servlet-class>
  <load-on-startup>1</load-on-startup>
</servlet>
<context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>

package com;

public class Counter {
private int count;
public Counter(){
System.out.println("Counter start!!!*******************************");
}
public int getCount() {
return count++;
}

}

index.jsp调用

<%@ page language="java" import="java.util.*,org.springframework.web.context.support.*,org.springframework.context.*" pageEncoding="utf-8"%>
<%@ page import="com.*" %>

<%
    ApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(getServletContext());
    Counter counter=(Counter)ctx.getBean("counter");
    out.println(counter.getCount());
     %>