目标：已知InitSpring1和InitSpring2两个类，spring1中有spring2的引用，用spring框架实现spring2的注入。
创建InitSpring1 public class InitSpring1 { private InitSpring2 initSpring2; // a setter method to inject the dependency. public void setInitSpring2(InitSpring2 initSpring2) { System.out.println("init Spring1."+"\n"); this.initSpring2 = initSpring2; } // a getter method to return spellChecker public InitSpring2 getInitSpring2() { return initSpring2; } public void logOut() { initSpring2.logOut(); } } 创建InitSpring2 public class InitSpring2 { public InitSpring2(){ System.out.println("init Spring2."+"\n"); } public void logOut() { System.out.println("log out Spring2."+"\n"); } } 创建testSpring.xml注意位置 <?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-3.0.xsd"> <bean id="spring1" class="yang.shuai.ysservice.entity.InitSpring1"> <property name="initSpring2" ref="spring2"/> </bean> <bean id="spring2" class="yang.shuai.ysservice.entity.InitSpring2"> </bean> </beans> 创建SpringController注意xml文件的引用路径 @RestController//controller标识 @RequestMapping("/spring")//请求路径 public class SpringController { @GetMapping("/getSpring")//请求路径 public void getSpring(){ //放在src目录下 ApplicationContext context = new FileSystemXmlApplicationContext("classpath:inject/testSpring.xml"); InitSpring1 te = (InitSpring1) context.getBean("spring1"); te.logOut(); } } 输出结果