第一個Spring程序 IOC范例

1、新建maven工程

2、在pom.xml文件中導入相關jar包

<!-- https://mvnrepository.com/artifact/org.springframework/spring-core --><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>5.2.1.RELEASE</version></dependency><!-- https://mvnrepository.com/artifact/org.springframework/spring-beans --><dependency><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId><version>5.2.1.RELEASE</version></dependency><!-- https://mvnrepository.com/artifact/org.springframework/spring-context --><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>5.2.1.RELEASE</version></dependency><!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api --><dependency><groupId>org.junit.jupiter</groupId><artifactId>junit-jupiter-api</artifactId><version>5.6.2</version><scope>test</scope></dependency><!-- https://mvnrepository.com/artifact/junit/junit --><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version><scope>compile</scope></dependency>

3、在Package【pojo】下新建一個【Source】類：

package pojo;public class Source { private String fruit; // 類型private String sugar; // 糖分描述private String size; // 大小杯 /* setter and getter */ }

4、在resources目錄下新建一個 applicationContext.xml 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"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"><bean name="source" class="pojo.Source"><property name="fruit" value="橙子"/><property name="sugar" value="多糖"/><property name="size" value="超大杯"/></bean> </beans>

5、在 Packge【test】下新建一個【TestSpring】類：

package test;import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import pojo.Source;public class TestSpring {@Testpublic void test(){ApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"./applicationContext.xml"});Source source = (Source) context.getBean("source");System.out.println(source.getFruit());System.out.println(source.getSugar());System.out.println(source.getSize());} }

6、運行測試代碼，可以正常拿到 xml 配置的 bean

橙子 多糖 超大杯

總結

以上是生活随笔為你收集整理的编写第一个Spring程序——IOC实现的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。