spring prototype怎么注入到singleton 里面

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经过测试之后用注解的方式不行所以只能采用容器取的方式。例子代码如下

package com.dragon.service.test;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.annotation.Scope;import org.springframework.stereotype.Component;@Component("testBean")@Scope("singleton")public class TestBean {<span style="white-space:pre"></span>//@Autowired<span style="white-space:pre"></span>//private TestBean1 testBean1;public TestBean1 getTestBean1() {return (TestBean1) SpringBeanUtils.getBean("testBean1");}}

package com.dragon.service.test;import org.springframework.context.annotation.Scope;import org.springframework.stereotype.Component;@Component("testBean1")@Scope("prototype")public class TestBean1 {private Integer num = 1;public Integer getNum() {num++;return num;}}

package com.dragon.service.test;import java.util.Map;import org.slf4j.*;import org.springframework.beans.BeansException;import org.springframework.context.ApplicationContext;import org.springframework.context.ApplicationContextAware;import org.springframework.stereotype.Service;@Servicepublic class SpringBeanUtils implements ApplicationContextAware {private static ApplicationContext appContext;private Logger logger = LoggerFactory.getLogger(getClass());public void setApplicationContext(ApplicationContext applicationContext)throws BeansException {SpringBeanUtils.appContext = applicationContext;logger.debug("初始化Spring上下文成功。");}/** * 获取 ApplicationContext */public static ApplicationContext getApplicationContext() {return appContext;}/** * 获取 TestBean *  * @param beanName *            bean 名称 * @return */public static Object getBean(String beanName) {checkApplicationContext();return appContext.getBean(beanName);}/** * 获取 TestBean *  * @param clazz *            bean 类 * @return */@SuppressWarnings("unchecked")public static <T> T getBean(Class<T> clazz) {checkApplicationContext();Map<?, ?> map = appContext.getBeansOfType(clazz);return map.isEmpty() ? null : (T) map.values().iterator().next();}/** * 检查 ApplicationContext 是否注入 */private static void checkApplicationContext() {if (null == appContext) {throw new IllegalStateException("applicaitonContext未注入");}}}

测试类如下

package com.dragon.test;import org.junit.Test;import org.springframework.beans.factory.annotation.Autowired;import com.dragon.service.test.TestBean;public class TestBeanTest extends BaseTest {@Autowiredprivate TestBean testBean1;@Autowiredprivate TestBean testBean2;@Testpublic void testAdd() {System.out.println(testBean1.getTestBean1().getNum());System.out.println(testBean2.getTestBean1().getNum());}}

这样子输出的结果是 2,2 也就说明了每次取到的testbean1对象都是新的对象

如果testbean里面采用注入的方式打印的结果是2,3

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