5.1 启动原理
public static void main(String[] args) {SpringApplication.run(xxx.class, args); //xxx.class：主配置类，（可以传多个）}
5.1.1 从 run 方法开始，先创建 SpringApplication，再调用 run 方法
/*** ConfigurableApplicationContext(可配置的应用程序上下文)*/public static ConfigurableApplicationContext run(Class<?> primarySource, String... args) {return run(new Class[]{primarySource}, args);}public static ConfigurableApplicationContext run(Class<?>[] primarySources, String[] args) {return (new SpringApplication(primarySources)).run(args);}
5.1.2 创建 SpringApplication
new SpringApplication(primarySources) //primarySources：主配置类
public SpringApplication(Class<?>... primarySources) {this((ResourceLoader) null, primarySources);//调用下面构造方法}public SpringApplication(ResourceLoader resourceLoader, Class<?>... primarySources) {this.sources = new LinkedHashSet();this.bannerMode = Mode.CONSOLE;this.logStartupInfo = true;this.addCommandLineProperties = true;this.addConversionService = true;this.headless = true;this.registerShutdownHook = true;this.additionalProfiles = new HashSet();this.isCustomEnvironment = false;this.lazyInitialization = false;this.resourceLoader = resourceLoader;Assert.notNull(primarySources, "PrimarySources must not be null");//保存主配置类this.primarySources = new LinkedHashSet(Arrays.asList(primarySources));//获取当前应用的类型，是不是web应用，见1this.webApplicationType = WebApplicationType.deduceFromClasspath();//从类路径下找到META‐INF/spring.factories配置的所有ApplicationContextInitializer；然后保存起来，见2this.setInitializers(this.getSpringFactoriesInstances(ApplicationContextInitializer.class));//从类路径下找到META‐INF/spring.ApplicationListener；然后保存起来,原理同上this.setListeners(this.getSpringFactoriesInstances(ApplicationListener.class));//从多个配置类中找到有main方法的主配置类，见下图(在调run方法的时候是可以传递多个配置类的)this.mainApplicationClass = this.deduceMainApplicationClass();//执行完毕，SpringApplication对象就创建出来了，返回到5.1.1处，调用SpringApplication对象的run方法，到5.1.3}
判断是不是 web 应用
static WebApplicationType deduceFromClasspath() {if (ClassUtils.isPresent("org.springframework.web.reactive.DispatcherHandler", (ClassLoader)null) && !ClassUtils.isPresent("org.springframework.web.servlet.DispatcherServlet", (ClassLoader)null) && !ClassUtils.isPresent("org.glassfish.jersey.servlet.ServletContainer", (ClassLoader)null)) {return REACTIVE;} else {String[] var0 = SERVLET_INDICATOR_CLASSES;int var1 = var0.length;for(int var2 = 0; var2 < var1; ++var2) {String className = var0[var2];if (!ClassUtils.isPresent(className, (ClassLoader)null)) {return NONE;}}return SERVLET;}}
getSpringFactoriesInstances(ApplicationContextInitializer.class)
private <T> Collection<T> getSpringFactoriesInstances(Class<T> type) { //调用下面重载方法，type：ApplicationContextInitializer.class return this.getSpringFactoriesInstances(type, new Class[0]); } private <T> Collection<T> getSpringFactoriesInstances(Class<T> type, Class<?>[] parameterTypes, Object... args) { ClassLoader classLoader = this.getClassLoader(); //获取key为ApplicationContextInitializer全类名的所有值，见下2.1 Set<String> names = new LinkedHashSet(SpringFactoriesLoader.loadFactoryNames(type, classLoader)); //根据拿到的类名集合，使用反射创建对象放到集合中返回 见 2.2 List<T> instances = this.createSpringFactoriesInstances(type, parameterTypes, classLoader, args, names); AnnotationAwareOrderComparator.sort(instances); return instances; //返回到5.1.2 set }2.1 调用 SpringApplication 对象的 run 方法
2.2 createSpringFactoriesInstancesprivate <T> List<T> createSpringFactoriesInstances(Class<T> type, Class<?>[] parameterTypes, ClassLoader classLoader, Object[] args, Set<String> names) { List<T> instances = new ArrayList(names.size()); Iterator var7 = names.iterator(); while(var7.hasNext()) { String name = (String)var7.next(); try { Class<?> instanceClass = ClassUtils.forName(name, classLoader); Assert.isAssignable(type, instanceClass); Constructor<?> constructor = instanceClass.getDeclaredConstructor(parameterTypes); T instance = BeanUtils.instantiateClass(constructor, args); instances.add(instance); } catch (Throwable var12) { throw new IllegalArgumentException("Cannot instantiate " + type + " : " + name, var12); } } return instances; }5.1.3 调用 SpringApplication 对象的 run 方法
容器创建完成，返回 5.1.1 处，最后返回到启动类；
public ConfigurableApplicationContext run(String... args) { StopWatch stopWatch = new StopWatch(); stopWatch.start(); //声明IOC容器 ConfigurableApplicationContext context = null; Collection<SpringBootExceptionReporter> exceptionReporters = new ArrayList(); this.configureHeadlessProperty(); //从类路径下META‐INF/spring.factories获取SpringApplicationRunListeners，原理同2中获取ApplicationContextInitializer和ApplicationListener SpringApplicationRunListeners listeners = this.getRunListeners(args); //遍历上一步获取的所有SpringApplicationRunListener，调用其starting方法 listeners.starting(); Collection exceptionReporters; try { //封装命令行 ApplicationArguments applicationArguments = new DefaultApplicationArguments(args); //准备环境，把上面获取到的listeners传过去，见3.1 ConfigurableEnvironment environment = this.prepareEnvironment(listeners, applicationArguments); this.configureIgnoreBeanInfo(environment); //打印Banner，就是控制台那个Spring字符画 Banner printedBanner = this.printBanner(environment); //根据当前环境利用反射创建IOC容器 context = this.createApplicationContext(); //从类路径下META‐INF/spring.factories获取SpringBootExceptionReporter，原理同2中获取ApplicationContextInitializer和ApplicationListener exceptionReporters = this.getSpringFactoriesInstances(SpringBootExceptionReporter.class, new Class[]{ConfigurableApplicationContext.class}, context); //准备IOC容器，见3.3 this.prepareContext(context, environment, listeners, applicationArguments, printedBanner); //刷新IOC容器，可查看配置嵌入式Servlet容器原理 链接在3.4 this.refreshContext(context); //这是一个空方法 this.afterRefresh(context, applicationArguments); stopWatch.stop(); if (this.logStartupInfo) { (new StartupInfoLogger(this.mainApplicationClass)).logStarted(this.getApplicationLog(), stopWatch); } //调用所有SpringApplicationRunListener的started方法 listeners.started(context); //见3.5 ，从ioc容器中获取所有的ApplicationRunner和CommandLineRunner进行回调ApplicationRunner先回调，CommandLineRunner再 this.callRunners(context, applicationArguments); } catch (Throwable var10) { this.handleRunFailure(context, var10, exceptionReporters, listeners); throw new IllegalStateException(var10); } try { //调用所有SpringApplicationRunListener的running方法 listeners.running(context); return context; } catch (Throwable var9) { this.handleRunFailure(context, var9, exceptionReporters, (SpringApplicationRunListeners)null); throw new IllegalStateException(var9); } }5.2 几个重要的事件回调机制
配置在 META-INF/spring.factories
- ApplicationContextInitializer
- SpringApplicationRunListener
存放在 ioc 容器中的组件
HelloApplicationContextInitializer ```java public class HelloApplicationContextInitializer implements ApplicationContextInitializer { @Override public void initialize(ConfigurableApplicationContext configurableApplicationContext) {
System.out.println("HelloApplicationContextInitializer...initialize...");} }
- HelloSpringApplicationRunListener
```java
public class HelloSpringApplicationRunListener implements SpringApplicationRunListener {
HelloSpringApplicationRunListener(SpringApplication application, String[] args){
}
@Override
public void starting() {
System.out.println("HelloSpringApplicationRunListener...starting...");
}
@Override
public void environmentPrepared(ConfigurableEnvironment environment) {
System.out.println("HelloSpringApplicationRunListener...environmentPrepared...");
}
@Override
public void contextPrepared(ConfigurableApplicationContext context) {
System.out.println("HelloSpringApplicationRunListener...contextPrepared...");
}
@Override
public void contextLoaded(ConfigurableApplicationContext context) {
System.out.println("HelloSpringApplicationRunListener...contextLoaded...");
}
@Override
public void started(ConfigurableApplicationContext context) {
System.out.println("HelloSpringApplicationRunListener...started...");
}
@Override
public void running(ConfigurableApplicationContext context) {
System.out.println("HelloSpringApplicationRunListener...running...");
}
@Override
public void failed(ConfigurableApplicationContext context, Throwable exception) {
System.out.println("HelloSpringApplicationRunListener...failed...");
}
}
HelloApplicationRunner
@Component public class HelloApplicationRunner implements ApplicationRunner { @Override public void run(ApplicationArguments args) throws Exception { System.out.println("HelloApplicationRunner...run..." + args); } }HelloCommandLineRunner
@Component public class HelloCommandLineRunner implements CommandLineRunner { @Override public void run(String... args) throws Exception { System.out.println("HelloCommandLineRunner...run..." + Arrays.asList(args)); } }5.2.1.2 配置文件
在类路径 rsources 下创建 META-INF/spring.factories ```java org.springframework.context.ApplicationContextInitializer=\
com.cyt.springboot.listener.HelloApplicationContextInitializer
org.springframework.boot.SpringApplicationRunListener=\ com.cyt.springboot.listener.HelloSpringApplicationRunListener
<a name="V9hNg"></a>
#### 5.2.1.3 运行结果
```java
"C:\Program Files\Java\jdk1.8.0_131\bin\java.exe" "-javaagent:D:\IDEA\IntelliJ IDEA Community Edition 2019.3\lib\idea_rt.jar=59043:D:\IDEA\IntelliJ IDEA Community Edition 2019.3\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_131\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\rt.jar;D:\IDEA\JavaCode\testSpringBoot\spring-boot-06-jpa\target\classes;C:\Users\陈玉婷\.m2\repository\org\springframework\boot\spring-boot-starter-data-jdbc\2.2.5.RELEASE\spring-boot-starter-data-jdbc-2.2.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\boot\spring-boot-starter-jdbc\2.2.5.RELEASE\spring-boot-starter-jdbc-2.2.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\com\zaxxer\HikariCP\3.4.2\HikariCP-3.4.2.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\spring-jdbc\5.2.4.RELEASE\spring-jdbc-5.2.4.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\data\spring-data-jdbc\1.1.5.RELEASE\spring-data-jdbc-1.1.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\data\spring-data-relational\1.1.5.RELEASE\spring-data-relational-1.1.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\data\spring-data-commons\2.2.5.RELEASE\spring-data-commons-2.2.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\spring-tx\5.2.4.RELEASE\spring-tx-5.2.4.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\spring-context\5.2.4.RELEASE\spring-context-5.2.4.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\spring-beans\5.2.4.RELEASE\spring-beans-5.2.4.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\slf4j\slf4j-api\1.7.30\slf4j-api-1.7.30.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\boot\spring-boot-starter-data-jpa\2.2.5.RELEASE\spring-boot-starter-data-jpa-2.2.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\boot\spring-boot-starter-aop\2.2.5.RELEASE\spring-boot-starter-aop-2.2.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\spring-aop\5.2.4.RELEASE\spring-aop-5.2.4.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\aspectj\aspectjweaver\1.9.5\aspectjweaver-1.9.5.jar;C:\Users\陈玉婷\.m2\repository\jakarta\activation\jakarta.activation-api\1.2.2\jakarta.activation-api-1.2.2.jar;C:\Users\陈玉婷\.m2\repository\jakarta\persistence\jakarta.persistence-api\2.2.3\jakarta.persistence-api-2.2.3.jar;C:\Users\陈玉婷\.m2\repository\jakarta\transaction\jakarta.transaction-api\1.3.3\jakarta.transaction-api-1.3.3.jar;C:\Users\陈玉婷\.m2\repository\org\hibernate\hibernate-core\5.4.12.Final\hibernate-core-5.4.12.Final.jar;C:\Users\陈玉婷\.m2\repository\org\jboss\logging\jboss-logging\3.4.1.Final\jboss-logging-3.4.1.Final.jar;C:\Users\陈玉婷\.m2\repository\org\javassist\javassist\3.24.0-GA\javassist-3.24.0-GA.jar;C:\Users\陈玉婷\.m2\repository\net\bytebuddy\byte-buddy\1.10.8\byte-buddy-1.10.8.jar;C:\Users\陈玉婷\.m2\repository\antlr\antlr\2.7.7\antlr-2.7.7.jar;C:\Users\陈玉婷\.m2\repository\org\jboss\jandex\2.1.1.Final\jandex-2.1.1.Final.jar;C:\Users\陈玉婷\.m2\repository\com\fasterxml\classmate\1.5.1\classmate-1.5.1.jar;C:\Users\陈玉婷\.m2\repository\org\dom4j\dom4j\2.1.1\dom4j-2.1.1.jar;C:\Users\陈玉婷\.m2\repository\org\hibernate\common\hibernate-commons-annotations\5.1.0.Final\hibernate-commons-annotations-5.1.0.Final.jar;C:\Users\陈玉婷\.m2\repository\org\glassfish\jaxb\jaxb-runtime\2.3.2\jaxb-runtime-2.3.2.jar;C:\Users\陈玉婷\.m2\repository\org\glassfish\jaxb\txw2\2.3.2\txw2-2.3.2.jar;C:\Users\陈玉婷\.m2\repository\com\sun\istack\istack-commons-runtime\3.0.8\istack-commons-runtime-3.0.8.jar;C:\Users\陈玉婷\.m2\repository\org\jvnet\staxex\stax-ex\1.8.1\stax-ex-1.8.1.jar;C:\Users\陈玉婷\.m2\repository\com\sun\xml\fastinfoset\FastInfoset\1.2.16\FastInfoset-1.2.16.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\data\spring-data-jpa\2.2.5.RELEASE\spring-data-jpa-2.2.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\spring-orm\5.2.4.RELEASE\spring-orm-5.2.4.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\spring-aspects\5.2.4.RELEASE\spring-aspects-5.2.4.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\boot\spring-boot-starter-web\2.2.5.RELEASE\spring-boot-starter-web-2.2.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\boot\spring-boot-starter\2.2.5.RELEASE\spring-boot-starter-2.2.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\boot\spring-boot\2.2.5.RELEASE\spring-boot-2.2.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\2.2.5.RELEASE\spring-boot-autoconfigure-2.2.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\boot\spring-boot-starter-logging\2.2.5.RELEASE\spring-boot-starter-logging-2.2.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\ch\qos\logback\logback-classic\1.2.3\logback-classic-1.2.3.jar;C:\Users\陈玉婷\.m2\repository\ch\qos\logback\logback-core\1.2.3\logback-core-1.2.3.jar;C:\Users\陈玉婷\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.12.1\log4j-to-slf4j-2.12.1.jar;C:\Users\陈玉婷\.m2\repository\org\apache\logging\log4j\log4j-api\2.12.1\log4j-api-2.12.1.jar;C:\Users\陈玉婷\.m2\repository\org\slf4j\jul-to-slf4j\1.7.30\jul-to-slf4j-1.7.30.jar;C:\Users\陈玉婷\.m2\repository\jakarta\annotation\jakarta.annotation-api\1.3.5\jakarta.annotation-api-1.3.5.jar;C:\Users\陈玉婷\.m2\repository\org\yaml\snakeyaml\1.25\snakeyaml-1.25.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\boot\spring-boot-starter-json\2.2.5.RELEASE\spring-boot-starter-json-2.2.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.10.2\jackson-databind-2.10.2.jar;C:\Users\陈玉婷\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.10.2\jackson-annotations-2.10.2.jar;C:\Users\陈玉婷\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.10.2\jackson-core-2.10.2.jar;C:\Users\陈玉婷\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.10.2\jackson-datatype-jdk8-2.10.2.jar;C:\Users\陈玉婷\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.10.2\jackson-datatype-jsr310-2.10.2.jar;C:\Users\陈玉婷\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.10.2\jackson-module-parameter-names-2.10.2.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\2.2.5.RELEASE\spring-boot-starter-tomcat-2.2.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\9.0.31\tomcat-embed-core-9.0.31.jar;C:\Users\陈玉婷\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\9.0.31\tomcat-embed-el-9.0.31.jar;C:\Users\陈玉婷\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.31\tomcat-embed-websocket-9.0.31.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\boot\spring-boot-starter-validation\2.2.5.RELEASE\spring-boot-starter-validation-2.2.5.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\jakarta\validation\jakarta.validation-api\2.0.2\jakarta.validation-api-2.0.2.jar;C:\Users\陈玉婷\.m2\repository\org\hibernate\validator\hibernate-validator\6.0.18.Final\hibernate-validator-6.0.18.Final.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\spring-web\5.2.4.RELEASE\spring-web-5.2.4.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\spring-webmvc\5.2.4.RELEASE\spring-webmvc-5.2.4.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\spring-expression\5.2.4.RELEASE\spring-expression-5.2.4.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\mysql\mysql-connector-java\8.0.19\mysql-connector-java-8.0.19.jar;C:\Users\陈玉婷\.m2\repository\jakarta\xml\bind\jakarta.xml.bind-api\2.3.2\jakarta.xml.bind-api-2.3.2.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\spring-core\5.2.4.RELEASE\spring-core-5.2.4.RELEASE.jar;C:\Users\陈玉婷\.m2\repository\org\springframework\spring-jcl\5.2.4.RELEASE\spring-jcl-5.2.4.RELEASE.jar" com.cyt.springboot.SpringBoot06JpaApplication
HelloSpringApplicationRunListener...starting...
HelloSpringApplicationRunListener...environmentPrepared...
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.2.5.RELEASE)
HelloApplicationContextInitializer...initialize...
HelloSpringApplicationRunListener...contextPrepared...
2020-03-28 10:10:58.715 INFO 6900 --- [ main] c.c.s.SpringBoot06JpaApplication : Starting SpringBoot06JpaApplication on DESKTOP-0IIT1JL with PID 6900 (D:\IDEA\JavaCode\testSpringBoot\spring-boot-06-jpa\target\classes started by yuting in D:\IDEA\JavaCode\testSpringBoot\spring-boot-06-jpa)
2020-03-28 10:10:58.722 INFO 6900 --- [ main] c.c.s.SpringBoot06JpaApplication : No active profile set, falling back to default profiles: default
HelloSpringApplicationRunListener...contextLoaded...
2020-03-28 10:11:01.145 INFO 6900 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2020-03-28 10:11:01.147 INFO 6900 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JDBC repositories in DEFAULT mode.
2020-03-28 10:11:01.248 INFO 6900 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data JDBC - Could not safely identify store assignment for repository candidate interface com.cyt.springboot.repository.EmployeeRepository. If you want this repository to be a JDBC repository, consider annotating your entities with one of these annotations: org.springframework.data.relational.core.mapping.Table.
2020-03-28 10:11:01.249 INFO 6900 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 87ms. Found 0 JDBC repository interfaces.
2020-03-28 10:11:01.273 INFO 6900 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2020-03-28 10:11:01.274 INFO 6900 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2020-03-28 10:11:01.333 INFO 6900 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 50ms. Found 1 JPA repository interfaces.
2020-03-28 10:11:03.712 INFO 6900 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2020-03-28 10:11:03.733 INFO 6900 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-03-28 10:11:03.735 INFO 6900 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.31]
2020-03-28 10:11:04.047 INFO 6900 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-03-28 10:11:04.047 INFO 6900 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 5157 ms
2020-03-28 10:11:04.656 INFO 6900 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]
2020-03-28 10:11:04.961 INFO 6900 --- [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.4.12.Final
2020-03-28 10:11:05.153 INFO 6900 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
2020-03-28 10:11:05.339 INFO 6900 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2020-03-28 10:11:05.871 INFO 6900 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2020-03-28 10:11:05.900 INFO 6900 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL57Dialect
2020-03-28 10:11:07.722 INFO 6900 --- [ main] o.h.e.t.j.p.i.JtaPlatformInitiator : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
2020-03-28 10:11:07.731 INFO 6900 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2020-03-28 10:11:08.278 WARN 6900 --- [ main] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2020-03-28 10:11:08.496 INFO 6900 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2020-03-28 10:11:09.044 INFO 6900 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2020-03-28 10:11:09.047 INFO 6900 --- [ main] c.c.s.SpringBoot06JpaApplication : Started SpringBoot06JpaApplication in 11.787 seconds (JVM running for 13.912)
HelloSpringApplicationRunListener...started...
HelloApplicationRunner...run...org.springframework.boot.DefaultApplicationArguments@5e98032e
HelloCommandLineRunner...run...[]
HelloSpringApplicationRunListener...running...
若有收获，就点个赞吧
0 人点赞
