Spring 下載地址:
http://www.springsource.org/download最少依賴包 commons-logging-1.1.1.jar spring.jar (我增加了log4j讓執行步驟輸出更詳細).
1. Hello.java1?package?alex.study.spring.hello;
2?
3?public?interface?Hello?{
4?????void?salute();
5?}
2. HelloImp.java?1?package?alex.study.spring.hello;
?2?
?3?public?class?HelloImp?implements?Hello?{
?4?
?5?????private?String?name;
?6?????private?String?send;
?7?????
?8?????public?HelloImp(String?name,?String?send)?{
?9?????????this.name?=?name;
10?????????this.send?=?send;
11?????}
12?
13?????public?void?setName(String?name)?{
14?????????this.name?=?name;
15?????}
16?
17?????public?void?setSend(String?send)?{
18?????????this.send?=?send;
19?????}
20?
21?????@Override
22?????public?void?salute()?{
23?????????System.out.println(name?+?"?:?"?+?send);
24?????}
25?
26?}
27?
3. spring-hello.xml (跟以上類放在同一包中)
?1?<?xml?version="1.0"?encoding="UTF-8"?>
?2?<beans?xmlns="http://www.springframework.org/schema/beans"
?3?????xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
?4?????xsi:schemaLocation="http://www.springframework.org/schema/beans?
?5?????http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
?6?
?7?????<!--?構造方法注入Bean?-->
?8?????<bean?id="helloimp"?class="alex.study.spring.hello.HelloImp">
?9?????????<!--?告訴Spring通過構造函數給Bean屬性賦值?-->
10?????????<constructor-arg?value="alex"?/>
11?????????<constructor-arg?value="Hello?World!"/>
12?????</bean>
13?</beans>
14?
4. log4j.properties (src目錄下)
1?log4j.appender.stdout=org.apache.log4j.ConsoleAppender
2?log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
3?log4j.appender.stdout.layout.ConversionPattern=%d{HH:mm:ss}?[%5p]?%c{1}?-?%m%n
4?
5?log4j.rootLogger=DEBUG,?stdout
6?
7?log4j.category.com.springinaction=DEBUG
8?log4j.category.org.springframework=DEBUG
9?
5. HelloApp.java
?1?package?alex.study.spring.hello;
?2?
?3?import?org.springframework.beans.factory.BeanFactory;
?4?import?org.springframework.beans.factory.xml.XmlBeanFactory;
?5?import?org.springframework.core.io.ClassPathResource;
?6?
?7?public?class?HelloApp?{
?8?????public?static?void?main(String[]?args)?{
?9?????????//初始化Bean工廠
10?????????BeanFactory?factory?=?new?XmlBeanFactory(new?ClassPathResource("alex/study/spring/hello/spring-hello.xml"));
11?????????Hello?hello?=?(Hello)?factory.getBean("helloimp");??//從Bean工廠獲取xml文件配置的ID為helloimp?Bean.
12
13?????????hello.salute();
14?????}
15?}
16?
6. 輸出結果
1?
2?
14:45:38?[DEBUG]?DefaultBeanDefinitionDocumentReader?-?Loading?bean?definitions
3?
14:45:38?[DEBUG]?XmlBeanFactory?-?Creating?shared?instance?of?singleton?bean?'helloimp'
4?
14:45:38?[DEBUG]?XmlBeanFactory?-?Creating?instance?of?bean?'helloimp'
5?
14:45:38?[DEBUG]?XmlBeanFactory?-?Eagerly?caching?bean?'helloimp'?to?allow?for?resolving?potential?circular?references
6?
14:45:38?[DEBUG]?XmlBeanFactory?-?Finished?creating?instance?of?bean?'helloimp'
7?
alex?:?Hello?World!