Spring常用扩展类

Spring常用的扩展类主要有:

  1. BeanFactoryPostProcessor Spring允许在Bean创建之前,读取Bean的元属性,并根据自己的需求对元属性进行改变,比如将Bean的scope从singleton改变为prototype
  2. BeanPostProcessor ,在每个bean的初始化前后调用
  3. InstantiationAwareBeanPostProcessor ,继承自BeanPostProcessor ,新增了三个方法,可在Bean实例化前后做一些操作
  4. BeanNameAware、ApplicationContextAware 和 BeanFactoryAware 可以获取容器上下文,从而操作bean等,经常做Spring工具类.
  5. InitializingBean 在属性设置完毕后做一些自定义操作
  6. DisposableBean 在关闭容器前做一些操作
  7. FactoryBean,在初始化的时候调用getObject方法,可以返回代理类,aop就是这样实现的
SpringBean初始化.png

日志如下:

MyBeanFactoryPostProcessor.postProcessBeanFactory ...org.springframework.beans.factory.support.DefaultListableBeanFactory@4e7912d8: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.event.internalEventListenerProcessor,org.springframework.context.event.internalEventListenerFactory,mySpringApplication,org.springframework.boot.autoconfigure.internalCachingMetadataReaderFactory,bean1,bean2,myBeanFactoryPostProcessor,person,springConfig,studyService,org.springframework.boot.autoconfigure.AutoConfigurationPackages,org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor,org.springframework.boot.context.properties.ConfigurationBeanFactoryMetadata,org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration,org.springframework.boot.autoconfigure.condition.BeanTypeRegistry,propertySourcesPlaceholderConfigurer,org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$Jackson2ObjectMapperBuilderCustomizerConfiguration,standardJacksonObjectMapperBuilderCustomizer,spring.jackson-org.springframework.boot.autoconfigure.jackson.JacksonProperties,org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$JacksonObjectMapperBuilderConfiguration,jacksonObjectMapperBuilder,org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$ParameterNamesModuleConfiguration,parameterNamesModule,org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$JacksonObjectMapperConfiguration,jacksonObjectMapper,org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration,jsonComponentModule,org.springframework.boot.autoconfigure.websocket.servlet.WebSocketServletAutoConfiguration$TomcatWebSocketConfiguration,websocketContainerCustomizer,org.springframework.boot.autoconfigure.websocket.servlet.WebSocketServletAutoConfiguration,org.springframework.boot.autoconfigure.web.servlet.ServletWebServerFactoryConfiguration$EmbeddedTomcat,tomcatServletWebServerFactory,org.springframework.boot.autoconfigure.web.servlet.ServletWebServerFactoryAutoConfiguration,servletWebServerFactoryCustomizer,tomcatServletWebServerFactoryCustomizer,server-org.springframework.boot.autoconfigure.web.ServerProperties,webServerFactoryCustomizerBeanPostProcessor,errorPageRegistrarBeanPostProcessor,org.springframework.boot.autoconfigure.web.servlet.DispatcherServletAutoConfiguration$DispatcherServletConfiguration,dispatcherServlet,spring.mvc-org.springframework.boot.autoconfigure.web.servlet.WebMvcProperties,org.springframework.boot.autoconfigure.web.servlet.DispatcherServletAutoConfiguration$DispatcherServletRegistrationConfiguration,dispatcherServletRegistration,org.springframework.boot.autoconfigure.web.servlet.DispatcherServletAutoConfiguration,org.springframework.boot.autoconfigure.http.codec.CodecsAutoConfiguration$JacksonCodecConfiguration,jacksonCodecCustomizer,org.springframework.boot.autoconfigure.http.codec.CodecsAutoConfiguration,org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration,defaultValidator,methodValidationPostProcessor,org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration,error,beanNameViewResolver,org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration$DefaultErrorViewResolverConfiguration,conventionErrorViewResolver,org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration,errorAttributes,basicErrorController,errorPageCustomizer,preserveErrorControllerTargetClassPostProcessor,spring.resources-org.springframework.boot.autoconfigure.web.ResourceProperties,org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration,requestMappingHandlerAdapter,requestMappingHandlerMapping,mvcConversionService,mvcValidator,mvcContentNegotiationManager,mvcPathMatcher,mvcUrlPathHelper,viewControllerHandlerMapping,beanNameHandlerMapping,resourceHandlerMapping,mvcResourceUrlProvider,defaultServletHandlerMapping,mvcUriComponentsContributor,httpRequestHandlerAdapter,simpleControllerHandlerAdapter,handlerExceptionResolver,mvcViewResolver,mvcHandlerMappingIntrospector,org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter$FaviconConfiguration,faviconHandlerMapping,faviconRequestHandler,org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter,defaultViewResolver,viewResolver,welcomePageHandlerMapping,requestContextFilter,org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration,hiddenHttpMethodFilter,httpPutFormContentFilter,org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration,mbeanExporter,objectNamingStrategy,mbeanServer,org.springframework.boot.autoconfigure.admin.SpringApplicationAdminJmxAutoConfiguration,springApplicationAdminRegistrar,org.springframework.boot.autoconfigure.context.ConfigurationPropertiesAutoConfiguration,org.springframework.boot.autoconfigure.http.HttpMessageConvertersAutoConfiguration$StringHttpMessageConverterConfiguration,stringHttpMessageConverter,spring.http.encoding-org.springframework.boot.autoconfigure.http.HttpEncodingProperties,org.springframework.boot.autoconfigure.http.JacksonHttpMessageConvertersConfiguration$MappingJackson2HttpMessageConverterConfiguration,mappingJackson2HttpMessageConverter,org.springframework.boot.autoconfigure.http.JacksonHttpMessageConvertersConfiguration,org.springframework.boot.autoconfigure.http.HttpMessageConvertersAutoConfiguration,messageConverters,org.springframework.boot.autoconfigure.info.ProjectInfoAutoConfiguration,spring.info-org.springframework.boot.autoconfigure.info.ProjectInfoProperties,org.springframework.boot.autoconfigure.security.reactive.ReactiveSecurityAutoConfiguration,spring.security-org.springframework.boot.autoconfigure.security.SecurityProperties,org.springframework.boot.autoconfigure.web.client.RestTemplateAutoConfiguration,restTemplateBuilder,org.springframework.boot.autoconfigure.web.embedded.EmbeddedWebServerFactoryCustomizerAutoConfiguration$TomcatWebServerFactoryCustomizerConfiguration,tomcatWebServerFactoryCustomizer,org.springframework.boot.autoconfigure.web.embedded.EmbeddedWebServerFactoryCustomizerAutoConfiguration,org.springframework.boot.autoconfigure.web.servlet.HttpEncodingAutoConfiguration,characterEncodingFilter,localeCharsetMappingsCustomizer,org.springframework.boot.autoconfigure.web.servlet.MultipartAutoConfiguration,multipartConfigElement,multipartResolver,spring.servlet.multipart-org.springframework.boot.autoconfigure.web.servlet.MultipartProperties]; root of factory hierarchy
MyInstantiationAwareBeanPostProcessor.postProcessBeforeInstantiation bean1
Bean1 的无参构造器
MyInstantiationAwareBeanPostProcessor.postProcessAfterInstantiation bean1
MyInstantiationAwareBeanPostProcessor.postProcessPropertyValues bean1
MyBeanPostProcessor.postProcessBeforeInitialization bean1
MyBeanPostProcessor.postProcessAfterInitialization bean1
MyInstantiationAwareBeanPostProcessor.postProcessBeforeInstantiation bean2
Bean2 的无参构造器
MyInstantiationAwareBeanPostProcessor.postProcessAfterInstantiation bean2
MyInstantiationAwareBeanPostProcessor.postProcessPropertyValues bean2
MyBeanPostProcessor.postProcessBeforeInitialization bean2
MyBeanPostProcessor.postProcessAfterInitialization bean2
MyInstantiationAwareBeanPostProcessor.postProcessBeforeInstantiation person
Person类构造方法
MyInstantiationAwareBeanPostProcessor.postProcessAfterInstantiation person
MyInstantiationAwareBeanPostProcessor.postProcessPropertyValues person
BeanNameAware.Person.setBeanName 被调用,beanName:person
BeanFactoryAware.setBeanFactory被调用 org.springframework.beans.factory.support.DefaultListableBeanFactory@7690781: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.event.internalEventListenerProcessor,org.springframework.context.event.internalEventListenerFactory,mySpringApplication,org.springframework.boot.autoconfigure.internalCachingMetadataReaderFactory,bean1,bean2,myBeanFactoryPostProcessor,myBeanPostProcessor,myInstantiationAwareBeanPostProcessor,person,springConfig,studyService,org.springframework.boot.autoconfigure.AutoConfigurationPackages,org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor,org.springframework.boot.context.properties.ConfigurationBeanFactoryMetadata,org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration,org.springframework.boot.autoconfigure.condition.BeanTypeRegistry,propertySourcesPlaceholderConfigurer,org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$Jackson2ObjectMapperBuilderCustomizerConfiguration,standardJacksonObjectMapperBuilderCustomizer,spring.jackson-org.springframework.boot.autoconfigure.jackson.JacksonProperties,org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$JacksonObjectMapperBuilderConfiguration,jacksonObjectMapperBuilder,org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$ParameterNamesModuleConfiguration,parameterNamesModule,org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$JacksonObjectMapperConfiguration,jacksonObjectMapper,org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration,jsonComponentModule,org.springframework.boot.autoconfigure.websocket.servlet.WebSocketServletAutoConfiguration$TomcatWebSocketConfiguration,websocketContainerCustomizer,org.springframework.boot.autoconfigure.websocket.servlet.WebSocketServletAutoConfiguration,org.springframework.boot.autoconfigure.web.servlet.ServletWebServerFactoryConfiguration$EmbeddedTomcat,tomcatServletWebServerFactory,org.springframework.boot.autoconfigure.web.servlet.ServletWebServerFactoryAutoConfiguration,servletWebServerFactoryCustomizer,tomcatServletWebServerFactoryCustomizer,server-org.springframework.boot.autoconfigure.web.ServerProperties,webServerFactoryCustomizerBeanPostProcessor,errorPageRegistrarBeanPostProcessor,org.springframework.boot.autoconfigure.web.servlet.DispatcherServletAutoConfiguration$DispatcherServletConfiguration,dispatcherServlet,spring.mvc-org.springframework.boot.autoconfigure.web.servlet.WebMvcProperties,org.springframework.boot.autoconfigure.web.servlet.DispatcherServletAutoConfiguration$DispatcherServletRegistrationConfiguration,dispatcherServletRegistration,org.springframework.boot.autoconfigure.web.servlet.DispatcherServletAutoConfiguration,org.springframework.boot.autoconfigure.http.codec.CodecsAutoConfiguration$JacksonCodecConfiguration,jacksonCodecCustomizer,org.springframework.boot.autoconfigure.http.codec.CodecsAutoConfiguration,org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration,defaultValidator,methodValidationPostProcessor,org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration,error,beanNameViewResolver,org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration$DefaultErrorViewResolverConfiguration,conventionErrorViewResolver,org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration,errorAttributes,basicErrorController,errorPageCustomizer,preserveErrorControllerTargetClassPostProcessor,spring.resources-org.springframework.boot.autoconfigure.web.ResourceProperties,org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration,requestMappingHandlerAdapter,requestMappingHandlerMapping,mvcConversionService,mvcValidator,mvcContentNegotiationManager,mvcPathMatcher,mvcUrlPathHelper,viewControllerHandlerMapping,beanNameHandlerMapping,resourceHandlerMapping,mvcResourceUrlProvider,defaultServletHandlerMapping,mvcUriComponentsContributor,httpRequestHandlerAdapter,simpleControllerHandlerAdapter,handlerExceptionResolver,mvcViewResolver,mvcHandlerMappingIntrospector,org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter$FaviconConfiguration,faviconHandlerMapping,faviconRequestHandler,org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter,defaultViewResolver,viewResolver,welcomePageHandlerMapping,requestContextFilter,org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration,hiddenHttpMethodFilter,httpPutFormContentFilter,org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration,mbeanExporter,objectNamingStrategy,mbeanServer,org.springframework.boot.autoconfigure.admin.SpringApplicationAdminJmxAutoConfiguration,springApplicationAdminRegistrar,org.springframework.boot.autoconfigure.context.ConfigurationPropertiesAutoConfiguration,org.springframework.boot.autoconfigure.http.HttpMessageConvertersAutoConfiguration$StringHttpMessageConverterConfiguration,stringHttpMessageConverter,spring.http.encoding-org.springframework.boot.autoconfigure.http.HttpEncodingProperties,org.springframework.boot.autoconfigure.http.JacksonHttpMessageConvertersConfiguration$MappingJackson2HttpMessageConverterConfiguration,mappingJackson2HttpMessageConverter,org.springframework.boot.autoconfigure.http.JacksonHttpMessageConvertersConfiguration,org.springframework.boot.autoconfigure.http.HttpMessageConvertersAutoConfiguration,messageConverters,org.springframework.boot.autoconfigure.info.ProjectInfoAutoConfiguration,spring.info-org.springframework.boot.autoconfigure.info.ProjectInfoProperties,org.springframework.boot.autoconfigure.security.reactive.ReactiveSecurityAutoConfiguration,spring.security-org.springframework.boot.autoconfigure.security.SecurityProperties,org.springframework.boot.autoconfigure.web.client.RestTemplateAutoConfiguration,restTemplateBuilder,org.springframework.boot.autoconfigure.web.embedded.EmbeddedWebServerFactoryCustomizerAutoConfiguration$TomcatWebServerFactoryCustomizerConfiguration,tomcatWebServerFactoryCustomizer,org.springframework.boot.autoconfigure.web.embedded.EmbeddedWebServerFactoryCustomizerAutoConfiguration,org.springframework.boot.autoconfigure.web.servlet.HttpEncodingAutoConfiguration,characterEncodingFilter,localeCharsetMappingsCustomizer,org.springframework.boot.autoconfigure.web.servlet.MultipartAutoConfiguration,multipartConfigElement,multipartResolver,spring.servlet.multipart-org.springframework.boot.autoconfigure.web.servlet.MultipartProperties]; root of factory hierarchy
ApplicationContextAware.Person.setApplicationContext 被调用
MyBeanPostProcessor.postProcessBeforeInitialization person
Person.myInit被调用 PostConstruct
InitializingBean.Person.afterPropertiesSet被调用
MyBeanPostProcessor.postProcessAfterInitialization person
MyInstantiationAwareBeanPostProcessor.postProcessBeforeInstantiation studyService
MyInstantiationAwareBeanPostProcessor.postProcessAfterInstantiation studyService
MyInstantiationAwareBeanPostProcessor.postProcessPropertyValues studyService
MyBeanPostProcessor.postProcessBeforeInitialization studyService
MyBeanPostProcessor.postProcessAfterInitialization studyService
com.byedbl.beans.StudyService PostConstruct...
Person.myDestroy被调用 PreDestroy
DisposableBean.Person.destory被调用

全部代码如下:

/**
 * FileName :Bean1
 * Author :zengzhijun
 * Date : 2018/7/12 11:58
 * Description:
 */
package com.byedbl.beans;

import org.springframework.stereotype.Component;

@Component
public class Bean1 {



    public Bean1() {
        System.err.println("Bean1 的无参构造器");
    }


}

/**
 * FileName :Bean1
 * Author :zengzhijun
 * Date : 2018/7/12 11:58
 * Description:
 */
package com.byedbl.beans;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;

@Component
public class Bean2 {


    @Autowired
    private Bean1 bean1;

    public Bean2() {
        System.err.println("Bean2 的无参构造器");
    }

    public Bean1 getBean1() {
        return bean1;
    }

    public void setBean1(Bean1 bean1) {
        System.err.println();
        this.bean1 = bean1;
    }

    @PostConstruct
    public void studyPost() {
        System.out.println(Bean2.class.getName()+" PostConstruct...");
    }
}

/**
 * FileName :MyBeanFactoryPostProcessor
 * Author :zengzhijun
 * Date : 2018/7/12 11:54
 * Description:
 */
package com.byedbl.beans;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.stereotype.Component;

@Component
public class MyBeanFactoryPostProcessor implements BeanFactoryPostProcessor {
    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
        System.err.println("MyBeanFactoryPostProcessor.postProcessBeanFactory ..."+beanFactory.toString());
    }
}

/**
 * FileName :MyBeanFactoryPostProcessor
 * Author :zengzhijun
 * Date : 2018/7/12 11:54
 * Description:
 */
package com.byedbl.beans;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.stereotype.Component;

@Component
public class MyBeanFactoryPostProcessor2 implements BeanFactoryPostProcessor {
    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
        System.err.println("MyBeanFactoryPostProcessor2.postProcessBeanFactory ..."+beanFactory.toString());
    }
}

/**
 * FileName :MyBeanPostProcessor
 * Author :zengzhijun
 * Date : 2018/7/12 16:07
 * Description:
 */
package com.byedbl.beans;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.stereotype.Component;

@Component
public class MyBeanPostProcessor implements BeanPostProcessor {


    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
        System.err.println("MyBeanPostProcessor.postProcessBeforeInitialization "+beanName);
        return bean;
    }

    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        System.err.println("MyBeanPostProcessor.postProcessAfterInitialization "+beanName);
        return bean;
    }

}

/**
 * FileName :MyInstantiationAwareBeanPostProcessor
 * Author :zengzhijun
 * Date : 2018/7/12 17:21
 * Description:
 */
package com.byedbl.beans;

import org.springframework.beans.BeansException;
import org.springframework.beans.PropertyValues;
import org.springframework.beans.factory.config.InstantiationAwareBeanPostProcessor;
import org.springframework.lang.Nullable;
import org.springframework.stereotype.Component;

import java.beans.PropertyDescriptor;

@Component
public class MyInstantiationAwareBeanPostProcessor implements InstantiationAwareBeanPostProcessor {

    @Override
    public Object postProcessBeforeInstantiation(Class<?> beanClass, String beanName) throws BeansException {
        System.err.println("MyInstantiationAwareBeanPostProcessor.postProcessBeforeInstantiation "+beanName);
        return null;
    }
    @Override
    public boolean postProcessAfterInstantiation(Object bean, String beanName) throws BeansException {
        System.err.println("MyInstantiationAwareBeanPostProcessor.postProcessAfterInstantiation "+beanName);
        return true;
    }

    @Nullable
    @Override
    public PropertyValues postProcessPropertyValues(
            PropertyValues pvs, PropertyDescriptor[] pds, Object bean, String beanName) throws BeansException {

        System.err.println("MyInstantiationAwareBeanPostProcessor.postProcessPropertyValues "+beanName);
        return pvs;
    }
}

/**
 * FileName :Person
 * Author :zengzhijun
 * Date : 2018/7/12 12:00
 * Description:
 */
package com.byedbl.beans;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.*;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;

@Component
public class Person implements BeanNameAware, BeanFactoryAware,
        ApplicationContextAware, InitializingBean, DisposableBean {

    private String name;

    public Person() {
        System.err.println("Person类构造方法");
    }


    public String getName() {
        System.err.println("Person.getName 方法被调用");
        return name;
    }

    public void setName(String name) {
        this.name = name;
        System.err.println("Person.setName方法被调用");
    }

    @PostConstruct
    public void myInit() {
        System.err.println("Person.myInit被调用 PostConstruct");
    }

    //自定义的销毁方法
    @PreDestroy
    public void myDestroy() {
        System.err.println("Person.myDestroy被调用 PreDestroy");
    }

    @Override
    public void destroy() throws Exception {
        System.err.println("DisposableBean.Person.destory被调用");
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        System.err.println("InitializingBean.Person.afterPropertiesSet被调用");
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext)
            throws BeansException {
        System.err.println("ApplicationContextAware.Person.setApplicationContext被调用");
    }

    @Override
    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
        System.err.println("BeanFactoryAware.setBeanFactory被调用 "+beanFactory);
    }

    @Override
    public void setBeanName(String beanName) {
        System.err.println("BeanNameAware.Person.setBeanName被调用,beanName:" + beanName);
    }

    @Override
    public String toString() {
        return "Person.name is :" + name;
    }

}

/**
 * FileName :StudyService
 * Author :zengzhijun
 * Date : 2018/7/11 17:02
 * Description:
 */
package com.byedbl.beans;


import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;

@Component
public class StudyService {

    @PostConstruct
    public void studyPost() {
        System.out.println(StudyService.class.getName()+" PostConstruct...");
    }
}

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