Spring配置

最新推荐文章于 2024-04-22 20:19:27 发布

原创最新推荐文章于 2024-04-22 20:19:27 发布 · 629 阅读

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1、导入Spring相关jar包

spring.jar、commons-logging.jar

2、在WEB-INF下，新建applicationContext.xml配置文件

<?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:aop="http://www.springframework.org/schema/aop" 
	xmlns:tx="http://www.springframework.org/schema/tx" 
	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
						http://www.springframework.org/schema/aop
						http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
						http://www.springframework.org/schema/tx
						http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
	
	<bean id="loginService" class="com.yd4.struts2.service.impl.LoginServiceImpl"></bean>
	<bean id="loginAction" class="com.yd4.struts2.action.LoginAction" scope="prototype">
		<property name="loginService" ref="loginService"></property>
	</bean>
</beans>

3、在web.xml中配置Spring监听器

<listener>
	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

4、测试

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;

public class Test {
	public static void main(String[] args) {
		ApplicationContext ctx = new FileSystemXmlApplicationContext("WebRoot/WEB-INF/applicationContext.xml");
		LoginServiceImpl bean = (LoginServiceImpl) ctx.getBean("loginService");
		
		// 调用bean方法
	}
}

其他：

1、在web.xml中配置contextConfigLocation参数

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
        classpath:/applicationContext-aop.xml
        classpath:/applicationContext-core.xml
    </param-value>
</context-param>

配置该参数，则会加载WEB-INF下指定文件；不配置，默认加载WEB-INF下applicationContext.xml。

2、ClassPathXmlApplicationContext和FileSystemXmlApplicationContext区别

ClassPathXmlApplicationContext：只能读取存放在WEB-INF/classes目录下的配置文件；使用file:前缀，可以指定绝对路径。

FileSystemXmlApplicationContext：没有盘符，是项目工作路径，即项目根目录；有盘符，表示文件绝对路径。如果要使用classpath路径，需要前缀classpath:

示例：

// 绝对路径

new FileSystemXmlApplicationContext("F:/workspace/example/src/appliationContext.xml");

new ClassPathXmlApplicationContext("file:F:/workspace/example/src/appliationContext.xml");

new FileSystemXmlApplicationContext("file:F:/workspace/example/src/appliationContext.xml");

// classpath路径

new ClassPathXmlApplicationContext("appliationContext.xml");

new ClassPathXmlApplicationContext("classpath:appliationContext.xml"); 

new FileSystemXmlApplicationContext("classpath:appliationContext.xml");

// 没有盘符

new FileSystemXmlApplicationContext("WEB-INF/appliationContext.xml");