<dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.3.10</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency>
public class Hello { private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } public void show(){ System.out.println("Hello,"+ name ); } }
注意:setter一定不可省略,bean的property字段设置依赖于setter。
<?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就是java对象 , 由Spring创建和管理--> <bean id="hello" class="com.workhah.pojo.Hello"> <property name="name" value="Spring"/> </bean> </beans>
@Test public void test(){ //解析beans.xml文件 , 生成管理相应的Bean对象 ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml"); //getBean : 参数即为spring配置文件中bean的id . Hello hello = (Hello) context.getBean("hello"); hello.show(); }