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深入学习Spring Boot中的SpringApplication

This commit is contained in:
mrbird 2019-03-13 18:28:12 +08:00
parent f620991fb0
commit 88e80fccaa
12 changed files with 257 additions and 0 deletions
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43
45.Spring-Boot-SpringApplication/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>SpringApplication</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

24
45.Spring-Boot-SpringApplication/src/main/java/com/example/demo/DemoApplication.java Normal file
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package com.example.demo;
import org.springframework.boot.Banner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.WebApplicationType;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
@SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
// SpringApplication application = new SpringApplication(DemoApplication.class);
// application.setBannerMode(Banner.Mode.OFF);
// application.setWebApplicationType(WebApplicationType.NONE);
// application.setHeadless(true);
// application.run(args);
new SpringApplicationBuilder(DemoApplication.class)
.web(WebApplicationType.NONE)
.run(args);
}
}

21
45.Spring-Boot-SpringApplication/src/main/java/com/example/demo/initializer/AfterHelloApplicationContextInitializer.java Normal file
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package com.example.demo.initializer;
import org.springframework.context.ApplicationContextInitializer;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.Ordered;
/**
* @author MrBird
*/
public class AfterHelloApplicationContextInitializer
implements ApplicationContextInitializer, Ordered {
@Override
public void initialize(ConfigurableApplicationContext applicationContext) {
System.out.println("AfterHelloApplicationContextInitializer: " + applicationContext.getId());
}
@Override
public int getOrder() {
return Ordered.LOWEST_PRECEDENCE;
}
}

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45.Spring-Boot-SpringApplication/src/main/java/com/example/demo/initializer/HelloApplicationContextInitializer.java Normal file
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package com.example.demo.initializer;
import org.springframework.context.ApplicationContextInitializer;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
/**
* @author MrBird
*/
@Order(Ordered.HIGHEST_PRECEDENCE)
public class HelloApplicationContextInitializer
implements ApplicationContextInitializer {
@Override
public void initialize(ConfigurableApplicationContext applicationContext) {
System.out.println("ConfigurableApplicationContext.id - " + applicationContext.getId());
}
}

20
45.Spring-Boot-SpringApplication/src/main/java/com/example/demo/listener/AfterContextClosedEventListener.java Normal file
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package com.example.demo.listener;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextClosedEvent;
import org.springframework.core.Ordered;
/**
* @author MrBird
*/
public class AfterContextClosedEventListener implements ApplicationListener<ContextClosedEvent>, Ordered {
@Override
public void onApplicationEvent(ContextClosedEvent event) {
System.out.println("AfterContextClosedEvent: " + event.getApplicationContext().getId());
}
@Override
public int getOrder() {
return Ordered.HIGHEST_PRECEDENCE + 1;
}
}

18
45.Spring-Boot-SpringApplication/src/main/java/com/example/demo/listener/ContextClosedEventListener.java Normal file
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package com.example.demo.listener;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextClosedEvent;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
/**
* @author MrBird
*/
@Order(Ordered.HIGHEST_PRECEDENCE)
public class ContextClosedEventListener implements ApplicationListener<ContextClosedEvent> {
@Override
public void onApplicationEvent(ContextClosedEvent event) {
System.out.println("ContextClosedEvent: " + event.getApplicationContext().getId());
}
}

52
45.Spring-Boot-SpringApplication/src/main/java/com/example/demo/listener/HelloApplicationRunListener.java Normal file
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package com.example.demo.listener;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.SpringApplicationRunListener;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.env.ConfigurableEnvironment;
/**
* @author MrBird
*/
public class HelloApplicationRunListener implements SpringApplicationRunListener {
public HelloApplicationRunListener(SpringApplication application, String[] args) {
}
@Override
public void starting() {
System.out.println("HelloApplicationRunListener starting......");
}
@Override
public void environmentPrepared(ConfigurableEnvironment environment) {
}
@Override
public void contextPrepared(ConfigurableApplicationContext context) {
}
@Override
public void contextLoaded(ConfigurableApplicationContext context) {
}
@Override
public void started(ConfigurableApplicationContext context) {
}
@Override
public void running(ConfigurableApplicationContext context) {
}
@Override
public void failed(ConfigurableApplicationContext context, Throwable exception) {
}
}

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45.Spring-Boot-SpringApplication/src/main/java/com/example/demo/runner/HelloApplicationRunner.java Normal file
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package com.example.demo.runner;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.stereotype.Component;
/**
* @author MrBird
*/
@Component
public class HelloApplicationRunner implements ApplicationRunner {
@Override
public void run(ApplicationArguments args) {
System.out.println("HelloApplicationRunner: hello spring boot");
}
}

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45.Spring-Boot-SpringApplication/src/main/java/com/example/demo/runner/HelloCommandLineRunner.java Normal file
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package com.example.demo.runner;
import org.springframework.boot.CommandLineRunner;
import org.springframework.stereotype.Component;
/**
* @author MrBird
*/
@Component
public class HelloCommandLineRunner implements CommandLineRunner {
@Override
public void run(String... args) {
System.out.println("HelloCommandLineRunner: hello spring boot");
}
}

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45.Spring-Boot-SpringApplication/src/main/resources/META-INF/spring.factories Normal file
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# Initializers
org.springframework.context.ApplicationContextInitializer=\
com.example.demo.initializer.HelloApplicationContextInitializer,\
com.example.demo.initializer.AfterHelloApplicationContextInitializer
# Application Listeners
org.springframework.context.ApplicationListener=\
com.example.demo.listener.ContextClosedEventListener,\
com.example.demo.listener.AfterContextClosedEventListener
# Run Listeners
org.springframework.boot.SpringApplicationRunListener=\
com.example.demo.listener.HelloApplicationRunListener

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45.Spring-Boot-SpringApplication/src/main/resources/application.properties Normal file
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45.Spring-Boot-SpringApplication/src/test/java/com/example/demo/DemoApplicationTests.java Normal file
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package com.example.demo;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@SpringBootTest
public class DemoApplicationTests {
@Test
public void contextLoads() {
}
}