DataSource的注册容器和初始化
示例配置
application.yml
spring:
datasource:
druid:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://127.0.0.1:3306/test?allowMultiQueries=true&useUnicode=true&characterEncoding=UTF-8&useSSL=false
username: root
password: xxxx
DruidDataSourceAutoConfigure的自动配置和loadBeanDefinitionsForBeanMethod处理
在druid-spring-boot-starter.jar包META-INF/spring.factories文件目录下有个自动装配的配置，如下。
org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure
而DruidDataSourceAutoConfigure类被@Configuration注解，且内部有个@Bean修饰的方法，正是DataSource，所以会在DruidDataSourceAutoConfigure时，会调用loadBeanDefinitionsForBeanMethod将DataSource注册IOC容器。具体@Configuration源码分析可见前文，或根据下面附调用链debug
package com.alibaba.druid.spring.boot.autoconfigure;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.spring.boot.autoconfigure.properties.DruidStatProperties;
import com.alibaba.druid.spring.boot.autoconfigure.stat.DruidFilterConfiguration;
import com.alibaba.druid.spring.boot.autoconfigure.stat.DruidSpringAopConfiguration;
import com.alibaba.druid.spring.boot.autoconfigure.stat.DruidStatViewServletConfiguration;
import com.alibaba.druid.spring.boot.autoconfigure.stat.DruidWebStatFilterConfiguration;
import javax.sql.DataSource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.autoconfigure.AutoConfigureBefore;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
@Configuration
@ConditionalOnClass({DruidDataSource.class})
@AutoConfigureBefore({DataSourceAutoConfiguration.class})
@EnableConfigurationProperties({DruidStatProperties.class, DataSourceProperties.class})
@Import({DruidSpringAopConfiguration.class, DruidStatViewServletConfiguration.class, DruidWebStatFilterConfiguration.class, DruidFilterConfiguration.class})
public class DruidDataSourceAutoConfigure {
private static final Logger LOGGER = LoggerFactory.getLogger(DruidDataSourceAutoConfigure.class);
public DruidDataSourceAutoConfigure() {
}
@Bean(
initMethod = "init"
)
@ConditionalOnMissingBean
public DataSource dataSource() {
LOGGER.info("Init DruidDataSource");
return new DruidDataSourceWrapper();
}
}
DataSource注册IOC容器调用链
"main@1" prio=5 tid=0x1 nid=NA runnable
java.lang.Thread.State: RUNNABLE
at org.springframework.beans.factory.support.DefaultListableBeanFactory.registerBeanDefinition(DefaultListableBeanFactory.java:982)
at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForBeanMethod(ConfigurationClassBeanDefinitionReader.java:295)
at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:153)
at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:129)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:348)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:252)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:285)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:99)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:751)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:569)
- locked <0x11ac> (a java.lang.Object)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:326)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298)
at com.java.study.StudyApplication.main(StudyApplication.java:13)
DataSource初始化
初始化入口依然是AbstractAutowireCapableBeanFactory#initializeBean()，在前面可以看到创建DataSource的类型是DruidDataSourceWrapper.class，所以在invokeInitMethods方法中调用DruidDataSourceWrapper#afterPropertiesSet()，在此方法中set用户名密码，以及url和DriverClassName
protected void invokeInitMethods(String beanName, Object bean, @Nullable RootBeanDefinition mbd)
throws Throwable {
boolean isInitializingBean = (bean instanceof InitializingBean);
if (isInitializingBean && (mbd == null || !mbd.isExternallyManagedInitMethod("afterPropertiesSet"))) {
if (logger.isTraceEnabled()) {
logger.trace("Invoking afterPropertiesSet() on bean with name '" + beanName + "'");
}
if (System.getSecurityManager() != null) {
try {
AccessController.doPrivileged((PrivilegedExceptionAction<Object>) () -> {
((InitializingBean) bean).afterPropertiesSet();
return null;
}, getAccessControlContext());
}
catch (PrivilegedActionException pae) {
throw pae.getException();
}
}
else {
((InitializingBean) bean).afterPropertiesSet();
}
}
}
主要在初始化时，进行初始化前的属性绑定，调用ConfigurationPropertiesBindingPostProcessor#postProcessBeforeInitialization(),后面就是属性绑定的过程
@Override
public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
bind(ConfigurationPropertiesBean.get(this.applicationContext, bean, beanName));
return bean;
}
username、password、url和DriverClassName便是在DruidAbstractDataSource中进行设置。
public abstract class DruidAbstractDataSource extends WrapperAdapter implements DruidAbstractDataSourceMBean, DataSource, DataSourceProxy, Serializable {
public void setUsername(String username) {
if (StringUtils.equals(this.username, username)) {
return;
}
if (inited) {
throw new UnsupportedOperationException();
}
this.username = username;
}
public void setPassword(String password) {
if (StringUtils.equals(this.password, password)) {
return;
}
if (inited) {
LOG.info("password changed");
}
this.password = password;
}
public void setUrl(String jdbcUrl) {
if (StringUtils.equals(this.jdbcUrl, jdbcUrl)) {
return;
}
if (inited) {
throw new UnsupportedOperationException();
}
if (jdbcUrl != null) {
jdbcUrl = jdbcUrl.trim();
}
this.jdbcUrl = jdbcUrl;
// if (jdbcUrl.startsWith(ConfigFilter.URL_PREFIX)) {
// this.filters.add(new ConfigFilter());
// }
}
public void setDriverClassName(String driverClass) {
if (driverClass != null && driverClass.length() > 256) {
throw new IllegalArgumentException("driverClassName length > 256.");
}
if (JdbcConstants.ORACLE_DRIVER2.equalsIgnoreCase(driverClass)) {
driverClass = "oracle.jdbc.OracleDriver";
LOG.warn("oracle.jdbc.driver.OracleDriver is deprecated.Having use oracle.jdbc.OracleDriver.");
}
if (inited) {
if (StringUtils.equals(this.driverClass, driverClass)) {
return;
}
throw new UnsupportedOperationException();
}
this.driverClass = driverClass;
}
}
获取property
此时便要去看这些value值怎么从yaml文件中取出来进行绑定的。
先看JavaBeanBinder#bind()方法，最后set方法中value值，便是property.setValue(beanSupplier, bound);中的bound，所以继续追踪propertyBinder.bindProperty()
private <T> boolean bind(BeanSupplier<T> beanSupplier, DataObjectPropertyBinder propertyBinder,
BeanProperty property) {
String propertyName = property.getName();
ResolvableType type = property.getType();
Supplier<Object> value = property.getValue(beanSupplier);
Annotation[] annotations = property.getAnnotations();
Object bound = propertyBinder.bindProperty(propertyName,
Bindable.of(type).withSuppliedValue(value).withAnnotations(annotations));
if (bound == null) {
return false;
}
if (property.isSettable()) {
property.setValue(beanSupplier, bound);
}
else if (value == null || !bound.equals(value.get())) {
throw new IllegalStateException("No setter found for property: " + property.getName());
}
return true;
}
然后会调用Binder#bindProperty(),再调用到Binder#bindObject()方法时，会去调用findProperty(name, context)，属性值便是通过此方法查找出来的
private <T> Object bindObject(ConfigurationPropertyName name, Bindable<T> target, BindHandler handler,
Context context, boolean allowRecursiveBinding) {
ConfigurationProperty property = findProperty(name, context);
if (property == null && context.depth != 0 && containsNoDescendantOf(context.getSources(), name)) {
return null;
}
AggregateBinder<?> aggregateBinder = getAggregateBinder(target, context);
if (aggregateBinder != null) {
return bindAggregate(name, target, handler, context, aggregateBinder);
}
if (property != null) {
try {
return bindProperty(target, context, property);
}
catch (ConverterNotFoundException ex) {
// We might still be able to bind it using the recursive binders
Object instance = bindDataObject(name, target, handler, context, allowRecursiveBinding);
if (instance != null) {
return instance;
}
throw ex;
}
}
return bindDataObject(name, target, handler, context, allowRecursiveBinding);
}
当source为OriginTrackedMapPropertySource时，获取yaml定义的属性
private ConfigurationProperty findProperty(ConfigurationPropertyName name, Context context) {
if (name.isEmpty()) {
return null;
}
for (ConfigurationPropertySource source : context.getSources()) {
ConfigurationProperty property = source.getConfigurationProperty(name);
if (property != null) {
return property;
}
}
return null;
}
property的初始化赋值
上面看到来怎么取property，但property在哪个过程开始赋值的呢？这就要去看application.yaml什么时候加载。（可参考前文《Springboot源码之application.yaml读取过程》
主要是ConfigDataEnvironmentContributors#withProcessedImports()中，传入resource和configData，然后到ofUnboundImport方法中进行绑定。
ConfigDataEnvironmentContributors withProcessedImports(ConfigDataImporter importer,
ConfigDataActivationContext activationContext) {
while (true) {
ConfigDataEnvironmentContributor contributorAndChildren = contributor.withChildren(importPhase,
asContributors(imported));
}
}
static ConfigDataEnvironmentContributor ofUnboundImport(ConfigDataResource resource, ConfigData configData,
int propertySourceIndex) {
PropertySource<?> propertySource = configData.getPropertySources().get(propertySourceIndex);
ConfigurationPropertySource configurationPropertySource = ConfigurationPropertySource.from(propertySource);
boolean ignoreImports = configData.getOptions().contains(ConfigData.Option.IGNORE_IMPORTS);
return new ConfigDataEnvironmentContributor(Kind.UNBOUND_IMPORT, resource, propertySource,
configurationPropertySource, null, ignoreImports, null);
}
最后在SpringConfigurationPropertySource#from()中对mapper进行赋值。
static SpringConfigurationPropertySource from(PropertySource<?> source) {
Assert.notNull(source, "Source must not be null");
PropertyMapper[] mappers = getPropertyMappers(source);
if (isFullEnumerable(source)) {
return new SpringIterableConfigurationPropertySource((EnumerablePropertySource<?>) source, mappers);
}
return new SpringConfigurationPropertySource(source, mappers);
}
application.yaml的读取并存储property过程调用链：
"main@1" prio=5 tid=0x1 nid=NA runnable
java.lang.Thread.State: RUNNABLE
at org.springframework.boot.context.properties.source.SpringConfigurationPropertySource.<init>(SpringConfigurationPropertySource.java:73)
at org.springframework.boot.context.properties.source.SpringIterableConfigurationPropertySource.<init>(SpringIterableConfigurationPropertySource.java:63)
at org.springframework.boot.context.properties.source.SpringConfigurationPropertySource.from(SpringConfigurationPropertySource.java:148)
at org.springframework.boot.context.properties.source.ConfigurationPropertySource.from(ConfigurationPropertySource.java:96)
at org.springframework.boot.context.config.ConfigDataEnvironmentContributor.ofUnboundImport(ConfigDataEnvironmentContributor.java:286)
at org.springframework.boot.context.config.ConfigDataEnvironmentContributors.lambda$asContributors$1(ConfigDataEnvironmentContributors.java:154)
at org.springframework.boot.context.config.ConfigDataEnvironmentContributors$$Lambda$93.855700733.accept(Unknown Source:-1)
at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684)
at java.util.Collections$UnmodifiableMap.forEach(Collections.java:1505)
at org.springframework.boot.context.config.ConfigDataEnvironmentContributors.asContributors(ConfigDataEnvironmentContributors.java:152)
at org.springframework.boot.context.config.ConfigDataEnvironmentContributors.withProcessedImports(ConfigDataEnvironmentContributors.java:123)
at org.springframework.boot.context.config.ConfigDataEnvironment.processInitial(ConfigDataEnvironment.java:230)
at org.springframework.boot.context.config.ConfigDataEnvironment.processAndApply(ConfigDataEnvironment.java:217)
at org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor.postProcessEnvironment(ConfigDataEnvironmentPostProcessor.java:88)
at org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor.postProcessEnvironment(ConfigDataEnvironmentPostProcessor.java:80)
at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEnvironmentPreparedEvent(EnvironmentPostProcessorApplicationListener.java:100)
at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEvent(EnvironmentPostProcessorApplicationListener.java:86)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:203)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:196)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:170)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:148)
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:82)
at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:63)
at org.springframework.boot.SpringApplicationRunListeners$$Lambda$41.586358252.accept(Unknown Source:-1)
at java.util.ArrayList.forEach(ArrayList.java:1257)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:117)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:111)
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:62)
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:362)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298)
at com.java.study.StudyApplication.main(StudyApplication.java:13)
具体值填充的调用链：
"main@1" prio=5 tid=0x1 nid=NA runnable
java.lang.Thread.State: RUNNABLE
at com.alibaba.druid.pool.DruidAbstractDataSource.setUsername(DruidAbstractDataSource.java:1078)
at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-1)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.boot.context.properties.bind.JavaBeanBinder$BeanProperty.setValue(JavaBeanBinder.java:354)
at org.springframework.boot.context.properties.bind.JavaBeanBinder.bind(JavaBeanBinder.java:98)
at org.springframework.boot.context.properties.bind.JavaBeanBinder.bind(JavaBeanBinder.java:80)
at org.springframework.boot.context.properties.bind.JavaBeanBinder.bind(JavaBeanBinder.java:56)
at org.springframework.boot.context.properties.bind.Binder.lambda$bindDataObject$5(Binder.java:451)
at org.springframework.boot.context.properties.bind.Binder$$Lambda$64.1361817590.get(Unknown Source:-1)
at org.springframework.boot.context.properties.bind.Binder$Context.withIncreasedDepth(Binder.java:571)
at org.springframework.boot.context.properties.bind.Binder$Context.withDataObject(Binder.java:557)
at org.springframework.boot.context.properties.bind.Binder$Context.access$300(Binder.java:512)
at org.springframework.boot.context.properties.bind.Binder.bindDataObject(Binder.java:449)
at org.springframework.boot.context.properties.bind.Binder.bindObject(Binder.java:390)
at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:319)
at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:308)
at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:238)
at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:225)
at org.springframework.boot.context.properties.ConfigurationPropertiesBinder.bind(ConfigurationPropertiesBinder.java:91)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.bind(ConfigurationPropertiesBindingPostProcessor.java:89)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:78)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:429)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1780)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:609)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$207.1251219927.getObject(Unknown Source:-1)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
- locked <0x16ed> (a java.util.concurrent.ConcurrentHashMap)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1367)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1287)
at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:885)
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:789)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1179)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:571)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$207.1251219927.getObject(Unknown Source:-1)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1367)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1287)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1503)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1401)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:608)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$207.1251219927.getObject(Unknown Source:-1)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1367)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1287)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1415)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:608)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$207.1251219927.getObject(Unknown Source:-1)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1367)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1287)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1415)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:608)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$207.1251219927.getObject(Unknown Source:-1)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:925)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588)
- locked <0x165b> (a java.lang.Object)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:326)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298)
at com.java.study.StudyApplication.main(StudyApplication.java:13)
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