Commit 7f6d6d09 authored by 刘凯's avatar 刘凯

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package com.atguigu;
import com.atguigu.config.MainConfigOfAOP;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.atguigu.bean.Person;
import com.atguigu.config.MainConfig;
public class MainTest {
@SuppressWarnings("resource")
public static void main(String[] args) {
// ApplicationContext applicationContext = new ClassPathXmlApplicationContext("beans.xml");
// Person bean = (Person) applicationContext.getBean("person");
// System.out.println(bean);
ApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainConfigOfAOP.class);
Person bean = applicationContext.getBean(Person.class);
System.out.println(bean);
String[] namesForType = applicationContext.getBeanNamesForType(Person.class);
for (String name : namesForType) {
System.out.println(name);
}
}
}
package com.atguigu.aop;
import java.util.Arrays;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
/**
* 切面类
* @author lfy
*
* @Aspect: 告诉Spring当前类是一个切面类
*
*/
@Aspect
public class LogAspects {
//抽取公共的切入点表达式
//1、本类引用
//2、其他的切面引用
@Pointcut("execution(public int com.atguigu.aop.MathCalculator.*(..))")
public void pointCut(){};
//@Before在目标方法之前切入;切入点表达式(指定在哪个方法切入)
@Before("pointCut()")
public void logStart(JoinPoint joinPoint){
Object[] args = joinPoint.getArgs();
System.out.println(""+joinPoint.getSignature().getName()+"运行。。。@Before:参数列表是:{"+Arrays.asList(args)+"}");
}
@After("com.atguigu.aop.LogAspects.pointCut()")
public void logEnd(JoinPoint joinPoint){
System.out.println(""+joinPoint.getSignature().getName()+"结束。。。@After");
}
//JoinPoint一定要出现在参数表的第一位
@AfterReturning(value="pointCut()",returning="result")
public void logReturn(JoinPoint joinPoint,Object result){
System.out.println(""+joinPoint.getSignature().getName()+"正常返回。。。@AfterReturning:运行结果:{"+result+"}");
}
@AfterThrowing(value="pointCut()",throwing="exception")
public void logException(JoinPoint joinPoint,Exception exception){
System.out.println(""+joinPoint.getSignature().getName()+"异常。。。异常信息:{"+exception+"}");
}
}
package com.atguigu.aop;
import org.springframework.stereotype.Component;
@Component
public class MathCalculator {
public int div(int i,int j){
System.out.println("MathCalculator...div...");
return i/j;
}
}
package com.atguigu.bean;
public class Blue {
public Blue(){
System.out.println("blue...constructor");
}
public void init(){
System.out.println("blue...init...");
}
public void detory(){
System.out.println("blue...detory...");
}
}
package com.atguigu.bean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
//默认加在ioc容器中的组件,容器启动会调用无参构造器创建对象,再进行初始化赋值等操作
@Component
public class Boss {
private Car car;
//构造器要用的组件,都是从容器中获取
public Boss(Car car){
this.car = car;
System.out.println("Boss...有参构造器");
}
public Car getCar() {
return car;
}
//@Autowired
//标注在方法,Spring容器创建当前对象,就会调用方法,完成赋值;
//方法使用的参数,自定义类型的值从ioc容器中获取
public void setCar(Car car) {
this.car = car;
}
@Override
public String toString() {
return "Boss [car=" + car + "]";
}
}
package com.atguigu.bean;
import org.springframework.stereotype.Component;
@Component
public class Car {
public Car(){
System.out.println("car constructor...");
}
public void init(){
System.out.println("car ... init...");
}
public void detory(){
System.out.println("car ... detory...");
}
}
package com.atguigu.bean;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.stereotype.Component;
@Component
public class Cat implements InitializingBean,DisposableBean {
public Cat(){
System.out.println("cat constructor...");
}
@Override
public void destroy() throws Exception {
// TODO Auto-generated method stub
System.out.println("cat...destroy...");
}
@Override
public void afterPropertiesSet() throws Exception {
// TODO Auto-generated method stub
System.out.println("cat...afterPropertiesSet...");
}
}
package com.atguigu.bean;
public class Color {
private Car car;
public Car getCar() {
return car;
}
public void setCar(Car car) {
this.car = car;
}
@Override
public String toString() {
return "Color [car=" + car + "]";
}
}
package com.atguigu.bean;
import org.springframework.beans.factory.FactoryBean;
//创建一个Spring定义的FactoryBean
public class ColorFactoryBean implements FactoryBean<Color> {
//返回一个Color对象,这个对象会添加到容器中
@Override
public Color getObject() throws Exception {
// TODO Auto-generated method stub
System.out.println("ColorFactoryBean...getObject...");
return new Color();
}
@Override
public Class<?> getObjectType() {
// TODO Auto-generated method stub
return Color.class;
}
//是单例?
//true:这个bean是单实例,在容器中保存一份
//false:多实例,每次获取都会创建一个新的bean;
@Override
public boolean isSingleton() {
// TODO Auto-generated method stub
return false;
}
}
package com.atguigu.bean;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
@Component
public class Dog implements ApplicationContextAware {
//@Autowired
private ApplicationContext applicationContext;
public Dog(){
System.out.println("dog constructor...");
}
//对象创建并赋值之后调用
@PostConstruct
public void init(){
System.out.println("Dog....@PostConstruct...");
}
//容器移除对象之前
@PreDestroy
public void detory(){
System.out.println("Dog....@PreDestroy...");
}
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
// TODO Auto-generated method stub
this.applicationContext = applicationContext;
}
}
package com.atguigu.bean;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.stereotype.Component;
/**
* 后置处理器:初始化前后进行处理工作
* 将后置处理器加入到容器中
* @author lfy
*/
@Component
public class MyBeanPostProcessor implements BeanPostProcessor {
@Override
public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
// TODO Auto-generated method stub
System.out.println("postProcessBeforeInitialization..."+beanName+"=>"+bean);
return bean;
}
@Override
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
// TODO Auto-generated method stub
System.out.println("postProcessAfterInitialization..."+beanName+"=>"+bean);
return bean;
}
}
package com.atguigu.bean;
import org.springframework.beans.factory.annotation.Value;
public class Person {
//使用@Value赋值;
//1、基本数值
//2、可以写SpEL; #{}
//3、可以写${};取出配置文件【properties】中的值(在运行环境变量里面的值)
@Value("张三")
private String name;
@Value("#{20-2}")
private Integer age;
@Value("${person.nickName}")
private String nickName;
public String getNickName() {
return nickName;
}
public void setNickName(String nickName) {
this.nickName = nickName;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public Person(String name, Integer age) {
super();
this.name = name;
this.age = age;
}
public Person() {
super();
// TODO Auto-generated constructor stub
}
@Override
public String toString() {
return "Person [name=" + name + ", age=" + age + ", nickName=" + nickName + "]";
}
}
package com.atguigu.bean;
public class RainBow {
}
package com.atguigu.bean;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanNameAware;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.EmbeddedValueResolverAware;
import org.springframework.stereotype.Component;
import org.springframework.util.StringValueResolver;
@Component
public class Red implements ApplicationContextAware,BeanNameAware,EmbeddedValueResolverAware {
private ApplicationContext applicationContext;
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
// TODO Auto-generated method stub
System.out.println("传入的ioc:"+applicationContext);
this.applicationContext = applicationContext;
}
@Override
public void setBeanName(String name) {
// TODO Auto-generated method stub
System.out.println("当前bean的名字:"+name);
}
@Override
public void setEmbeddedValueResolver(StringValueResolver resolver) {
// TODO Auto-generated method stub
String resolveStringValue = resolver.resolveStringValue("你好 ${os.name} 我是 #{20*18}");
System.out.println("解析的字符串:"+resolveStringValue);
}
}
package com.atguigu.bean;
public class Yellow {
}
package com.atguigu.condition;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.context.annotation.Condition;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.core.env.Environment;
import org.springframework.core.type.AnnotatedTypeMetadata;
//判断是否linux系统
public class LinuxCondition implements Condition {
/**
* ConditionContext:判断条件能使用的上下文(环境)
* AnnotatedTypeMetadata:注释信息
*/
@Override
public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {
// TODO是否linux系统
//1、能获取到ioc使用的beanfactory
ConfigurableListableBeanFactory beanFactory = context.getBeanFactory();
//2、获取类加载器
ClassLoader classLoader = context.getClassLoader();
//3、获取当前环境信息
Environment environment = context.getEnvironment();
//4、获取到bean定义的注册类
BeanDefinitionRegistry registry = context.getRegistry();
String property = environment.getProperty("os.name");
//可以判断容器中的bean注册情况,也可以给容器中注册bean
boolean definition = registry.containsBeanDefinition("person");
if(property.contains("linux")){
return true;
}
return false;
}
}
package com.atguigu.condition;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
import org.springframework.core.type.AnnotationMetadata;
import com.atguigu.bean.RainBow;
public class MyImportBeanDefinitionRegistrar implements ImportBeanDefinitionRegistrar {
/**
* AnnotationMetadata:当前类的注解信息
* BeanDefinitionRegistry:BeanDefinition注册类;
* 把所有需要添加到容器中的bean;调用
* BeanDefinitionRegistry.registerBeanDefinition手工注册进来
*/
@Override
public void registerBeanDefinitions(AnnotationMetadata importingClassMetadata, BeanDefinitionRegistry registry) {
boolean definition = registry.containsBeanDefinition("com.atguigu.bean.Red");
boolean definition2 = registry.containsBeanDefinition("com.atguigu.bean.Blue");
if(definition && definition2){
//指定Bean定义信息;(Bean的类型,Bean。。。)
RootBeanDefinition beanDefinition = new RootBeanDefinition(RainBow.class);
//注册一个Bean,指定bean名
registry.registerBeanDefinition("rainBow", beanDefinition);
}
}
}
package com.atguigu.condition;
import org.springframework.context.annotation.ImportSelector;
import org.springframework.core.type.AnnotationMetadata;
//自定义逻辑返回需要导入的组件
public class MyImportSelector implements ImportSelector {
//返回值,就是到导入到容器中的组件全类名
//AnnotationMetadata:当前标注@Import注解的类的所有注解信息
@Override
public String[] selectImports(AnnotationMetadata importingClassMetadata) {
// TODO Auto-generated method stub
//importingClassMetadata
//方法不要返回null值
return new String[]{"com.atguigu.bean.Blue","com.atguigu.bean.Yellow"};
}
}
package com.atguigu.condition;
import org.springframework.context.annotation.Condition;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.core.env.Environment;
import org.springframework.core.type.AnnotatedTypeMetadata;
//жǷwindowsϵͳ
public class WindowsCondition implements Condition {
@Override
public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {
Environment environment = context.getEnvironment();
String property = environment.getProperty("os.name");
if(property.contains("Windows")){
return true;
}
return false;
}
}
package com.atguigu.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.context.annotation.ComponentScan.Filter;
import org.springframework.context.annotation.ComponentScans;
import com.atguigu.bean.Person;
//配置类==配置文件
@Configuration //告诉Spring这是一个配置类
@ComponentScans(
value = {
@ComponentScan(value="com.atguigu",includeFilters = {
/* @Filter(type=FilterType.ANNOTATION,classes={Controller.class}),
@Filter(type=FilterType.ASSIGNABLE_TYPE,classes={BookService.class}),*/
@Filter(type=FilterType.CUSTOM,classes={MyTypeFilter.class})
},useDefaultFilters = false)
}
)
//@ComponentScan value:指定要扫描的包
//excludeFilters = Filter[] :指定扫描的时候按照什么规则排除那些组件
//includeFilters = Filter[] :指定扫描的时候只需要包含哪些组件
//FilterType.ANNOTATION:按照注解
//FilterType.ASSIGNABLE_TYPE:按照给定的类型;
//FilterType.ASPECTJ:使用ASPECTJ表达式
//FilterType.REGEX:使用正则指定
//FilterType.CUSTOM:使用自定义规则
public class MainConfig {
//给容器中注册一个Bean;类型为返回值的类型,id默认是用方法名作为id
@Bean("person")
public Person person01(){
return new Person("lisi", 20);
}
}
package com.atguigu.config;
import com.atguigu.bean.Color;
import com.atguigu.bean.ColorFactoryBean;
import com.atguigu.bean.Person;
import com.atguigu.bean.Red;
import com.atguigu.condition.LinuxCondition;
import com.atguigu.condition.MyImportBeanDefinitionRegistrar;
import com.atguigu.condition.MyImportSelector;
import com.atguigu.condition.WindowsCondition;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Conditional;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.context.annotation.Lazy;
//类中组件统一设置。满足当前条件,这个类中配置的所有bean注册才能生效;
@Conditional({WindowsCondition.class})
@Configuration
@Import({Color.class,Red.class,MyImportSelector.class,MyImportBeanDefinitionRegistrar.class})
//@Import导入组件,id默认是组件的全类名
public class MainConfig2 {
//默认是单实例的
/**
* ConfigurableBeanFactory#SCOPE_PROTOTYPE
* @see ConfigurableBeanFactory#SCOPE_SINGLETON
* @see org.springframework.web.context.WebApplicationContext#SCOPE_REQUEST request
* @see org.springframework.web.context.WebApplicationContext#SCOPE_SESSION sesssion
* @return\
* @Scope:调整作用域
* prototype:多实例的:ioc容器启动并不会去调用方法创建对象放在容器中。
* 每次获取的时候才会调用方法创建对象;
* singleton:单实例的(默认值):ioc容器启动会调用方法创建对象放到ioc容器中。
* 以后每次获取就是直接从容器(map.get())中拿,
* request:同一次请求创建一个实例
* session:同一个session创建一个实例
*
* 懒加载:
* 单实例bean:默认在容器启动的时候创建对象;
* 懒加载:容器启动不创建对象。第一次使用(获取)Bean创建对象,并初始化;
*
*/
// @Scope("prototype")
@Lazy
@Bean("person")
public Person person(){
System.out.println("给容器中添加Person....");
return new Person("张三", 25);
}
/**
* @Conditional({Condition}) : 按照一定的条件进行判断,满足条件给容器中注册bean
*
* 如果系统是windows,给容器中注册("bill")
* 如果是linux系统,给容器中注册("linus")
*/
@Bean("bill")
public Person person01(){
return new Person("Bill Gates",62);
}
@Conditional(LinuxCondition.class)
@Bean("linus")
public Person person02(){
return new Person("linus", 48);
}
/**
* 给容器中注册组件;
* 1)、包扫描+组件标注注解(@Controller/@Service/@Repository/@Component)[自己写的类]
* 2)、@Bean[导入的第三方包里面的组件]
* 3)、@Import[快速给容器中导入一个组件]
* 1)、@Import(要导入到容器中的组件);容器中就会自动注册这个组件,id默认是全类名
* 2)、ImportSelector:返回需要导入的组件的全类名数组;
* 3)、ImportBeanDefinitionRegistrar:手动注册bean到容器中
* 4)、使用Spring提供的 FactoryBean(工厂Bean);
* 1)、默认获取到的是工厂bean调用getObject创建的对象
* 2)、要获取工厂Bean本身,我们需要给id前面加一个&
* &colorFactoryBean
*/
@Bean
public ColorFactoryBean colorFactoryBean(){
return new ColorFactoryBean();
}
}
\ No newline at end of file
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package com.atguigu.config;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Scope;
import com.atguigu.bean.Car;
/**
* bean的生命周期:
* bean创建---初始化----销毁的过程
* 容器管理bean的生命周期;
* 我们可以自定义初始化和销毁方法;容器在bean进行到当前生命周期的时候来调用我们自定义的初始化和销毁方法
*
* 构造(对象创建)
* 单实例:在容器启动的时候创建对象
* 多实例:在每次获取的时候创建对象\
*
* BeanPostProcessor.postProcessBeforeInitialization
* 初始化:
* 对象创建完成,并赋值好,调用初始化方法。。。
* BeanPostProcessor.postProcessAfterInitialization
* 销毁:
* 单实例:容器关闭的时候
* 多实例:容器不会管理这个bean;容器不会调用销毁方法;
*
*
* 遍历得到容器中所有的BeanPostProcessor;挨个执行beforeInitialization,
* 一但返回null,跳出for循环,不会执行后面的BeanPostProcessor.postProcessorsBeforeInitialization
*
* BeanPostProcessor原理
* populateBean(beanName, mbd, instanceWrapper);给bean进行属性赋值
* initializeBean
* {
* applyBeanPostProcessorsBeforeInitialization(wrappedBean, beanName);
* invokeInitMethods(beanName, wrappedBean, mbd);执行自定义初始化
* applyBeanPostProcessorsAfterInitialization(wrappedBean, beanName);
*}
*
*
*
* 1)、指定初始化和销毁方法;
* 通过@Bean指定init-method和destroy-method;
* 2)、通过让Bean实现InitializingBean(定义初始化逻辑),
* DisposableBean(定义销毁逻辑);
* 3)、可以使用JSR250;
* @PostConstruct:在bean创建完成并且属性赋值完成;来执行初始化方法
* @PreDestroy:在容器销毁bean之前通知我们进行清理工作
* 4)、BeanPostProcessor【interface】:bean的后置处理器;
* 在bean初始化前后进行一些处理工作;
* postProcessBeforeInitialization:在初始化之前工作
* postProcessAfterInitialization:在初始化之后工作
*
* Spring底层对 BeanPostProcessor 的使用;
* bean赋值,注入其他组件,@Autowired,生命周期注解功能,@Async,xxx BeanPostProcessor;
*
* @author lfy
*
*/
@ComponentScan("com.atguigu.bean")
@Configuration
public class MainConfigOfLifeCycle {
//@Scope("prototype")
@Bean(initMethod="init",destroyMethod="detory")
public Car car(){
return new Car();
}
}
package com.atguigu.config;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.EmbeddedValueResolverAware;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;
import org.springframework.context.annotation.PropertySource;
import org.springframework.util.StringValueResolver;
import com.atguigu.bean.Yellow;
import com.mchange.v2.c3p0.ComboPooledDataSource;
/**
* Profile:
* Spring为我们提供的可以根据当前环境,动态的激活和切换一系列组件的功能;
*
* 开发环境、测试环境、生产环境;
* 数据源:(/A)(/B)(/C);
*
*
* @Profile:指定组件在哪个环境的情况下才能被注册到容器中,不指定,任何环境下都能注册这个组件
*
* 1)、加了环境标识的bean,只有这个环境被激活的时候才能注册到容器中。默认是default环境
* 2)、写在配置类上,只有是指定的环境的时候,整个配置类里面的所有配置才能开始生效
* 3)、没有标注环境标识的bean在,任何环境下都是加载的;
*/
@PropertySource("classpath:/dbconfig.properties")
@Configuration
public class MainConfigOfProfile implements EmbeddedValueResolverAware{
@Value("${db.user}")
private String user;
private StringValueResolver valueResolver;
private String driverClass;
@Bean
public Yellow yellow(){
return new Yellow();
}
@Profile("test")
@Bean("testDataSource")
public DataSource dataSourceTest(@Value("${db.password}")String pwd) throws Exception{
ComboPooledDataSource dataSource = new ComboPooledDataSource();
dataSource.setUser(user);
dataSource.setPassword(pwd);
dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/test");
dataSource.setDriverClass(driverClass);
return dataSource;
}
@Profile("dev")
@Bean("devDataSource")
public DataSource dataSourceDev(@Value("${db.password}")String pwd) throws Exception{
ComboPooledDataSource dataSource = new ComboPooledDataSource();
dataSource.setUser(user);
dataSource.setPassword(pwd);
dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/ssm_crud");
dataSource.setDriverClass(driverClass);
return dataSource;
}
@Profile("prod")
@Bean("prodDataSource")
public DataSource dataSourceProd(@Value("${db.password}")String pwd) throws Exception{
ComboPooledDataSource dataSource = new ComboPooledDataSource();
dataSource.setUser(user);
dataSource.setPassword(pwd);
dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/scw_0515");
dataSource.setDriverClass(driverClass);
return dataSource;
}
@Override
public void setEmbeddedValueResolver(StringValueResolver resolver) {
// TODO Auto-generated method stub
this.valueResolver = resolver;
driverClass = valueResolver.resolveStringValue("${db.driverClass}");
}
}
package com.atguigu.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import com.atguigu.bean.Person;
//使用@PropertySource读取外部配置文件中的k/v保存到运行的环境变量中;加载完外部的配置文件以后使用${}取出配置文件的值
@PropertySource(value={"classpath:/person.properties"})
@Configuration
public class MainConfigOfPropertyValues {
@Bean
public Person person(){
return new Person();
}
}
package com.atguigu.config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import com.atguigu.bean.Car;
import com.atguigu.bean.Color;
import com.atguigu.dao.BookDao;
/**
* 自动装配;
* Spring利用依赖注入(DI),完成对IOC容器中中各个组件的依赖关系赋值;
*
* 1)、@Autowired:自动注入:
* 1)、默认优先按照类型去容器中找对应的组件:applicationContext.getBean(BookDao.class);找到就赋值
* 2)、如果找到多个相同类型的组件,再将属性的名称作为组件的id去容器中查找
* applicationContext.getBean("bookDao")
* 3)、@Qualifier("bookDao"):使用@Qualifier指定需要装配的组件的id,而不是使用属性名
* 4)、自动装配默认一定要将属性赋值好,没有就会报错;
* 可以使用@Autowired(required=false);
* 5)、@Primary:让Spring进行自动装配的时候,默认使用首选的bean;
* 也可以继续使用@Qualifier指定需要装配的bean的名字
* BookService{
* @Autowired
* BookDao bookDao;
* }
*
* 2)、Spring还支持使用@Resource(JSR250)和@Inject(JSR330)[java规范的注解]
* @Resource:
* 可以和@Autowired一样实现自动装配功能;默认是按照组件名称进行装配的;
* 没有能支持@Primary功能没有支持@Autowired(reqiured=false);
* @Inject:
* 需要导入javax.inject的包,和Autowired的功能一样。没有required=false的功能;
* @Autowired:Spring定义的; @Resource、@Inject都是java规范
*
* AutowiredAnnotationBeanPostProcessor:解析完成自动装配功能;
*
* 3)、 @Autowired:构造器,参数,方法,属性;都是从容器中获取参数组件的值
* 1)、[标注在方法位置]:@Bean+方法参数;参数从容器中获取;默认不写@Autowired效果是一样的;都能自动装配
* 2)、[标在构造器上]:如果组件只有一个有参构造器,这个有参构造器的@Autowired可以省略,参数位置的组件还是可以自动从容器中获取
* 3)、放在参数位置:
*
* 4)、自定义组件想要使用Spring容器底层的一些组件(ApplicationContext,BeanFactory,xxx);
* 自定义组件实现xxxAware;在创建对象的时候,会调用接口规定的方法注入相关组件;Aware;
* 把Spring底层一些组件注入到自定义的Bean中;
* xxxAware:功能使用xxxProcessor;
* ApplicationContextAware==》ApplicationContextAwareProcessor;
*
*
* @author lfy
*
*/
@Configuration
@ComponentScan({"com.atguigu.service","com.atguigu.dao",
"com.atguigu.controller","com.atguigu.bean"})
public class MainConifgOfAutowired {
@Primary
@Bean("bookDao2")
public BookDao bookDao(){
BookDao bookDao = new BookDao();
bookDao.setLable("2");
return bookDao;
}
/**
* @Bean标注的方法创建对象的时候,方法参数的值从容器中获取
* @param car
* @return
*/
@Bean
public Color color(Car car){
Color color = new Color();
color.setCar(car);
return color;
}
}
package com.atguigu.config;
import java.io.IOException;
import org.springframework.core.io.Resource;
import org.springframework.core.type.AnnotationMetadata;
import org.springframework.core.type.ClassMetadata;
import org.springframework.core.type.classreading.MetadataReader;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.core.type.filter.TypeFilter;
public class MyTypeFilter implements TypeFilter {
/**
* metadataReader:读取到的当前正在扫描的类的信息
* metadataReaderFactory:可以获取到其他任何类信息的
*/
@Override
public boolean match(MetadataReader metadataReader, MetadataReaderFactory metadataReaderFactory)
throws IOException {
// TODO Auto-generated method stub
//获取当前类注解的信息
AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata();
//获取当前正在扫描的类的类信息
ClassMetadata classMetadata = metadataReader.getClassMetadata();
//获取当前类资源(类的路径)
Resource resource = metadataReader.getResource();
String className = classMetadata.getClassName();
System.out.println("--->"+className);
if(className.contains("er")){
return true;
}
return false;
}
}
package com.atguigu.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import com.atguigu.service.BookService;
@Controller
public class BookController {
@Autowired
private BookService bookService;
}
package com.atguigu.dao;
import org.springframework.stereotype.Repository;
//名字默认是类名首字母小写
@Repository
public class BookDao {
private String lable = "1";
public String getLable() {
return lable;
}
public void setLable(String lable) {
this.lable = lable;
}
@Override
public String toString() {
return "BookDao [lable=" + lable + "]";
}
}
package com.atguigu.ext;
import java.util.concurrent.Executor;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.event.ContextClosedEvent;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.context.event.SimpleApplicationEventMulticaster;
import com.atguigu.bean.Blue;
/**
* 扩展原理:
* BeanPostProcessor:bean后置处理器,bean创建对象初始化前后进行拦截工作的
*
* 1、BeanFactoryPostProcessor:beanFactory的后置处理器;
* 在BeanFactory标准初始化之后调用,来定制和修改BeanFactory的内容;
* 所有的bean定义已经保存加载到beanFactory,但是bean的实例还未创建
*
*
* BeanFactoryPostProcessor原理:
* 1)、ioc容器创建对象
* 2)、invokeBeanFactoryPostProcessors(beanFactory);
* 如何找到所有的BeanFactoryPostProcessor并执行他们的方法;
* 1)、直接在BeanFactory中找到所有类型是BeanFactoryPostProcessor的组件,并执行他们的方法
* 2)、在初始化创建其他组件前面执行
*
* 2、BeanDefinitionRegistryPostProcessor extends BeanFactoryPostProcessor
* postProcessBeanDefinitionRegistry();
* 在所有bean定义信息将要被加载,bean实例还未创建的;
*
* 优先于BeanFactoryPostProcessor执行;
* 利用BeanDefinitionRegistryPostProcessor给容器中再额外添加一些组件;
*
* 原理:
* 1)、ioc创建对象
* 2)、refresh()-》invokeBeanFactoryPostProcessors(beanFactory);
* 3)、从容器中获取到所有的BeanDefinitionRegistryPostProcessor组件。
* 1、依次触发所有的postProcessBeanDefinitionRegistry()方法
* 2、再来触发postProcessBeanFactory()方法BeanFactoryPostProcessor;
*
* 4)、再来从容器中找到BeanFactoryPostProcessor组件;然后依次触发postProcessBeanFactory()方法
*
* 3、ApplicationListener:监听容器中发布的事件。事件驱动模型开发;
* public interface ApplicationListener<E extends ApplicationEvent>
* 监听 ApplicationEvent 及其下面的子事件;
*
* 步骤:
* 1)、写一个监听器(ApplicationListener实现类)来监听某个事件(ApplicationEvent及其子类)
* @EventListener;
* 原理:使用EventListenerMethodProcessor处理器来解析方法上的@EventListener;
*
* 2)、把监听器加入到容器;
* 3)、只要容器中有相关事件的发布,我们就能监听到这个事件;
* ContextRefreshedEvent:容器刷新完成(所有bean都完全创建)会发布这个事件;
* ContextClosedEvent:关闭容器会发布这个事件;
* 4)、发布一个事件:
* applicationContext.publishEvent();
*
* 原理:
* ContextRefreshedEvent、IOCTest_Ext$1[source=我发布的时间]、ContextClosedEvent;
* 1)、ContextRefreshedEvent事件:
* 1)、容器创建对象:refresh();
* 2)、finishRefresh();容器刷新完成会发布ContextRefreshedEvent事件
* 2)、自己发布事件;
* 3)、容器关闭会发布ContextClosedEvent;
*
* 【事件发布流程】:
* 3)、publishEvent(new ContextRefreshedEvent(this));
* 1)、获取事件的多播器(派发器):getApplicationEventMulticaster()
* 2)、multicastEvent派发事件:
* 3)、获取到所有的ApplicationListener;
* for (final ApplicationListener<?> listener : getApplicationListeners(event, type)) {
* 1)、如果有Executor,可以支持使用Executor进行异步派发;
* Executor executor = getTaskExecutor();
* 2)、否则,同步的方式直接执行listener方法;invokeListener(listener, event);
* 拿到listener回调onApplicationEvent方法;
*
* 【事件多播器(派发器)】
* 1)、容器创建对象:refresh();
* 2)、initApplicationEventMulticaster();初始化ApplicationEventMulticaster;
* 1)、先去容器中找有没有id=“applicationEventMulticaster”的组件;
* 2)、如果没有this.applicationEventMulticaster = new SimpleApplicationEventMulticaster(beanFactory);
* 并且加入到容器中,我们就可以在其他组件要派发事件,自动注入这个applicationEventMulticaster;
*
* 【容器中有哪些监听器】
* 1)、容器创建对象:refresh();
* 2)、registerListeners();
* 从容器中拿到所有的监听器,把他们注册到applicationEventMulticaster中;
* String[] listenerBeanNames = getBeanNamesForType(ApplicationListener.class, true, false);
* //将listener注册到ApplicationEventMulticaster中
* getApplicationEventMulticaster().addApplicationListenerBean(listenerBeanName);
*
* SmartInitializingSingleton 原理:->afterSingletonsInstantiated();
* 1)、ioc容器创建对象并refresh();
* 2)、finishBeanFactoryInitialization(beanFactory);初始化剩下的单实例bean;
* 1)、先创建所有的单实例bean;getBean();
* 2)、获取所有创建好的单实例bean,判断是否是SmartInitializingSingleton类型的;
* 如果是就调用afterSingletonsInstantiated();
*
*
*
*/
@ComponentScan("com.atguigu.ext")
@Configuration
public class ExtConfig {
@Bean
public Blue blue(){
return new Blue();
}
}
package com.atguigu.ext;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.EventListener;
import org.springframework.stereotype.Component;
@Component
public class MyApplicationListener implements ApplicationListener<ApplicationEvent> {
//当容器中发布此事件以后,方法触发
@Override
public void onApplicationEvent(ApplicationEvent event) {
// TODO Auto-generated method stub
System.out.println("收到事件:"+event);
}
}
package com.atguigu.ext;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.BeanDefinitionRegistryPostProcessor;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.stereotype.Component;
import com.atguigu.bean.Blue;
@Component
public class MyBeanDefinitionRegistryPostProcessor implements BeanDefinitionRegistryPostProcessor{
@Override
public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
// TODO Auto-generated method stub
System.out.println("MyBeanDefinitionRegistryPostProcessor...bean的数量:"+beanFactory.getBeanDefinitionCount());
}
//BeanDefinitionRegistry Bean定义信息的保存中心,以后BeanFactory就是按照BeanDefinitionRegistry里面保存的每一个bean定义信息创建bean实例;
@Override
public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {
// TODO Auto-generated method stub
System.out.println("postProcessBeanDefinitionRegistry...bean的数量:"+registry.getBeanDefinitionCount());
//RootBeanDefinition beanDefinition = new RootBeanDefinition(Blue.class);
AbstractBeanDefinition beanDefinition = BeanDefinitionBuilder.rootBeanDefinition(Blue.class).getBeanDefinition();
registry.registerBeanDefinition("hello", beanDefinition);
}
}
package com.atguigu.ext;
import java.util.Arrays;
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.out.println("MyBeanFactoryPostProcessor...postProcessBeanFactory...");
int count = beanFactory.getBeanDefinitionCount();
String[] names = beanFactory.getBeanDefinitionNames();
System.out.println("ǰBeanFactory"+count+" Bean");
System.out.println(Arrays.asList(names));
}
}
package com.atguigu.service;
import javax.annotation.Resource;
import javax.inject.Inject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;
import com.atguigu.dao.BookDao;
@Service
public class BookService {
//@Qualifier("bookDao")
@Autowired(required=false)
//@Resource(name="bookDao2")
// @Inject
private BookDao bookDao;
public void print(){
System.out.println(bookDao);
}
@Override
public String toString() {
return "BookService [bookDao=" + bookDao + "]";
}
}
package com.atguigu.tx;
import java.beans.PropertyVetoException;
import javax.sql.DataSource;
import org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator;
import org.springframework.aop.framework.autoproxy.InfrastructureAdvisorAutoProxyCreator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.AnnotationTransactionAttributeSource;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration;
import org.springframework.transaction.annotation.TransactionManagementConfigurationSelector;
import org.springframework.transaction.annotation.Transactional;
import com.mchange.v2.c3p0.ComboPooledDataSource;
/**
* 声明式事务:
*
* 环境搭建:
* 1、导入相关依赖
* 数据源、数据库驱动、Spring-jdbc模块
* 2、配置数据源、JdbcTemplate(Spring提供的简化数据库操作的工具)操作数据
* 3、给方法上标注 @Transactional 表示当前方法是一个事务方法;
* 4、 @EnableTransactionManagement 开启基于注解的事务管理功能;
* @EnableXXX
* 5、配置事务管理器来控制事务;
* @Bean
* public PlatformTransactionManager transactionManager()
*
*
* 原理:
* 1)、@EnableTransactionManagement
* 利用TransactionManagementConfigurationSelector给容器中会导入组件
* 导入两个组件
* AutoProxyRegistrar
* ProxyTransactionManagementConfiguration
* 2)、AutoProxyRegistrar:
* 给容器中注册一个 InfrastructureAdvisorAutoProxyCreator 组件;
* InfrastructureAdvisorAutoProxyCreator:?
* 利用后置处理器机制在对象创建以后,包装对象,返回一个代理对象(增强器),代理对象执行方法利用拦截器链进行调用;
*
* 3)、ProxyTransactionManagementConfiguration 做了什么?
* 1、给容器中注册事务增强器;
* 1)、事务增强器要用事务注解的信息,AnnotationTransactionAttributeSource解析事务注解
* 2)、事务拦截器:
* TransactionInterceptor;保存了事务属性信息,事务管理器;
* 他是一个 MethodInterceptor;
* 在目标方法执行的时候;
* 执行拦截器链;
* 事务拦截器:
* 1)、先获取事务相关的属性
* 2)、再获取PlatformTransactionManager,如果事先没有添加指定任何transactionmanger
* 最终会从容器中按照类型获取一个PlatformTransactionManager;
* 3)、执行目标方法
* 如果异常,获取到事务管理器,利用事务管理回滚操作;
* 如果正常,利用事务管理器,提交事务
*
*/
@EnableTransactionManagement
@ComponentScan("com.atguigu.tx")
@Configuration
public class TxConfig {
//数据源
@Bean
public DataSource dataSource() throws Exception{
ComboPooledDataSource dataSource = new ComboPooledDataSource();
dataSource.setUser("dev");
dataSource.setPassword("dev_fas015");
dataSource.setDriverClass("com.mysql.jdbc.Driver");
dataSource.setJdbcUrl("jdbc:mysql://dev.config.duibar.com:3306/test");
return dataSource;
}
//
@Bean
public JdbcTemplate jdbcTemplate() throws Exception{
//Spring对@Configuration类会特殊处理;给容器中加组件的方法,多次调用都只是从容器中找组件
JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource());
return jdbcTemplate;
}
//注册事务管理器在容器中
@Bean
public PlatformTransactionManager transactionManager() throws Exception{
return new DataSourceTransactionManager(dataSource());
}
}
package com.atguigu.tx;
import java.util.UUID;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;
@Repository
public class UserDao {
@Autowired
private JdbcTemplate jdbcTemplate;
public void insert(){
String sql = " insert into role(role_name,note) value(?,?)";
String username = UUID.randomUUID().toString().substring(0, 5);
jdbcTemplate.update(sql, username,19);
}
}
package com.atguigu.tx;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
@Service
public class UserService {
@Autowired
private UserDao userDao;
@Transactional
public void insertUser(){
userDao.insert();
//otherDao.other();xxx
System.out.println("...");
// int i = 10/0;
}
}
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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
<context:property-placeholder location="classpath:person.properties"/>
<!-- 包扫描、只要标注了@Controller、@Service、@Repository,@Component -->
<!-- <context:component-scan base-package="com.atguigu" use-default-filters="false"></context:component-scan> -->
<bean id="person" class="com.atguigu.bean.Person" scope="prototype" >
<property name="age" value="${}"></property>
<property name="name" value="zhangsan"></property>
</bean>
<!-- 开启基于注解版的切面功能 -->
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>
<!-- <tx:annotation-driven/> -->
</beans>
db.user=root
db.password=123456
db.driverClass=com.mysql.jdbc.Driver
person.nickName=\u5C0F\u674E\u56DB
\ No newline at end of file
package com.atguigu.test;
import java.util.Map;
import org.junit.Test;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.core.env.ConfigurableEnvironment;
import com.atguigu.bean.Blue;
import com.atguigu.bean.Person;
import com.atguigu.config.MainConfig;
import com.atguigu.config.MainConfig2;
public class IOCTest {
AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainConfig2.class);
@Test
public void testImport(){
printBeans(applicationContext);
Blue bean = applicationContext.getBean(Blue.class);
System.out.println(bean);
//工厂Bean获取的是调用getObject创建的对象
Object bean2 = applicationContext.getBean("colorFactoryBean");
Object bean3 = applicationContext.getBean("colorFactoryBean");
System.out.println("bean的类型:"+bean2.getClass());
System.out.println(bean2 == bean3);
Object bean4 = applicationContext.getBean("&colorFactoryBean");
System.out.println(bean4.getClass());
}
private void printBeans(AnnotationConfigApplicationContext applicationContext){
String[] definitionNames = applicationContext.getBeanDefinitionNames();
for (String name : definitionNames) {
System.out.println(name);
}
}
@Test
public void test03(){
String[] namesForType = applicationContext.getBeanNamesForType(Person.class);
ConfigurableEnvironment environment = applicationContext.getEnvironment();
//动态获取环境变量的值;Windows 10
String property = environment.getProperty("os.name");
System.out.println(property);
for (String name : namesForType) {
System.out.println(name);
}
Map<String, Person> persons = applicationContext.getBeansOfType(Person.class);
System.out.println(persons);
}
@Test
public void test02(){
AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainConfig2.class);
// String[] definitionNames = applicationContext.getBeanDefinitionNames();
// for (String name : definitionNames) {
// System.out.println(name);
// }
//
System.out.println("ioc容器创建完成....");
Object bean = applicationContext.getBean("person");
Object bean2 = applicationContext.getBean("person");
System.out.println(bean == bean2);
}
@SuppressWarnings("resource")
@Test
public void test01(){
AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainConfig.class);
String[] definitionNames = applicationContext.getBeanDefinitionNames();
for (String name : definitionNames) {
System.out.println(name);
}
}
}
package com.atguigu.test;
import org.junit.Test;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import com.atguigu.aop.MathCalculator;
import com.atguigu.bean.Boss;
import com.atguigu.bean.Car;
import com.atguigu.bean.Color;
import com.atguigu.bean.Red;
import com.atguigu.config.MainConfigOfAOP;
import com.atguigu.config.MainConifgOfAutowired;
import com.atguigu.dao.BookDao;
import com.atguigu.service.BookService;
public class IOCTest_AOP {
@Test
public void test01(){
AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainConfigOfAOP.class);
//1ҪԼ
// MathCalculator mathCalculator = new MathCalculator();
// mathCalculator.div(1, 1);
MathCalculator mathCalculator = applicationContext.getBean(MathCalculator.class);
mathCalculator.div(1, 0);
applicationContext.close();
}
}
package com.atguigu.test;
import org.junit.Test;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import com.atguigu.bean.Boss;
import com.atguigu.bean.Car;
import com.atguigu.bean.Color;
import com.atguigu.bean.Red;
import com.atguigu.config.MainConifgOfAutowired;
import com.atguigu.dao.BookDao;
import com.atguigu.service.BookService;
public class IOCTest_Autowired {
@Test
public void test01(){
AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainConifgOfAutowired.class);
BookService bookService = applicationContext.getBean(BookService.class);
System.out.println(bookService);
//BookDao bean = applicationContext.getBean(BookDao.class);
//System.out.println(bean);
Boss boss = applicationContext.getBean(Boss.class);
System.out.println(boss);
Car car = applicationContext.getBean(Car.class);
System.out.println(car);
Color color = applicationContext.getBean(Color.class);
System.out.println(color);
System.out.println(applicationContext);
applicationContext.close();
}
}
package com.atguigu.test;
import org.junit.Test;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import com.atguigu.aop.MathCalculator;
import com.atguigu.bean.Boss;
import com.atguigu.bean.Car;
import com.atguigu.bean.Color;
import com.atguigu.bean.Red;
import com.atguigu.config.MainConfigOfAOP;
import com.atguigu.config.MainConifgOfAutowired;
import com.atguigu.dao.BookDao;
import com.atguigu.ext.ExtConfig;
import com.atguigu.service.BookService;
public class IOCTest_Ext {
@Test
public void test01(){
AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(ExtConfig.class);
//发布事件;
applicationContext.publishEvent(new ApplicationEvent(new String("我发布的时间")) {
});
applicationContext.close();
}
}
package com.atguigu.test;
import org.junit.Test;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import com.atguigu.config.MainConfigOfLifeCycle;
public class IOCTest_LifeCycle {
@Test
public void test01(){
//1、创建ioc容器
AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainConfigOfLifeCycle.class);
System.out.println("容器创建完成...");
//applicationContext.getBean("car");
//关闭容器
applicationContext.close();
}
}
package com.atguigu.test;
import javax.sql.DataSource;
import org.junit.Test;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import com.atguigu.bean.Boss;
import com.atguigu.bean.Car;
import com.atguigu.bean.Color;
import com.atguigu.bean.Red;
import com.atguigu.bean.Yellow;
import com.atguigu.config.MainConfigOfProfile;
import com.atguigu.config.MainConifgOfAutowired;
import com.atguigu.dao.BookDao;
import com.atguigu.service.BookService;
public class IOCTest_Profile {
//1、使用命令行动态参数: 在虚拟机参数位置加载 -Dspring.profiles.active=test
//2、代码的方式激活某种环境;
@Test
public void test01(){
AnnotationConfigApplicationContext applicationContext =
new AnnotationConfigApplicationContext();
//1、创建一个applicationContext
//2、设置需要激活的环境
applicationContext.getEnvironment().setActiveProfiles("dev");
//3、注册主配置类
applicationContext.register(MainConfigOfProfile.class);
//4、启动刷新容器
applicationContext.refresh();
String[] namesForType = applicationContext.getBeanNamesForType(DataSource.class);
for (String string : namesForType) {
System.out.println(string);
}
Yellow bean = applicationContext.getBean(Yellow.class);
System.out.println(bean);
applicationContext.close();
}
}
package com.atguigu.test;
import org.junit.Test;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.core.env.ConfigurableEnvironment;
import com.atguigu.bean.Person;
import com.atguigu.config.MainConfigOfLifeCycle;
import com.atguigu.config.MainConfigOfPropertyValues;
public class IOCTest_PropertyValue {
AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainConfigOfPropertyValues.class);
@Test
public void test01(){
printBeans(applicationContext);
System.out.println("=============");
Person person = (Person) applicationContext.getBean("person");
System.out.println(person);
ConfigurableEnvironment environment = applicationContext.getEnvironment();
String property = environment.getProperty("person.nickName");
System.out.println(property);
applicationContext.close();
}
private void printBeans(AnnotationConfigApplicationContext applicationContext){
String[] definitionNames = applicationContext.getBeanDefinitionNames();
for (String name : definitionNames) {
System.out.println(name);
}
}
}
package com.atguigu.test;
import org.junit.Test;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import com.atguigu.aop.MathCalculator;
import com.atguigu.bean.Boss;
import com.atguigu.bean.Car;
import com.atguigu.bean.Color;
import com.atguigu.bean.Red;
import com.atguigu.config.MainConfigOfAOP;
import com.atguigu.config.MainConifgOfAutowired;
import com.atguigu.dao.BookDao;
import com.atguigu.service.BookService;
import com.atguigu.tx.TxConfig;
import com.atguigu.tx.UserService;
public class IOCTest_Tx {
@Test
public void test01(){
AnnotationConfigApplicationContext applicationContext =
new AnnotationConfigApplicationContext(TxConfig.class);
UserService userService = applicationContext.getBean(UserService.class);
userService.insertUser();
applicationContext.close();
}
}
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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
<context:property-placeholder location="classpath:person.properties"/>
<!-- 包扫描、只要标注了@Controller、@Service、@Repository,@Component -->
<!-- <context:component-scan base-package="com.atguigu" use-default-filters="false"></context:component-scan> -->
<bean id="person" class="com.atguigu.bean.Person" scope="prototype" >
<property name="age" value="${}"></property>
<property name="name" value="zhangsan"></property>
</bean>
<!-- 开启基于注解版的切面功能 -->
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>
<!-- <tx:annotation-driven/> -->
</beans>
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