Spring Boot Questions- Part 1
- What is Spring Boot?
Spring Boot makes it easy to create stand-alone, production-grade Spring based Applications that you can “just run”.
You can use Spring Boot to create Java applications that can be started using java -jar or more traditional war deployments.
- What are the advantages of spring boot application?
Provide a range of non-functional features that are common to large classes of projects (e.g. embedded servers, security, metrics, health checks, externalized configuration).
Opinionated view of the Spring platform and third-party libraries so you can get started with minimum fuss.
Absolutely no code generation and no requirement for XML configuration.
Provide a radically faster and widely accessible getting started experience for all Spring development.
What are the requirements of Spring boot System?
Spring Boot 1.5.9.RELEASE requires
Java 7 +
Spring 4.3.13 +
For build support
Maven 3.2+
Gradle 2.9+
Container Support
Tomcat 7+
Jetty 8+ (Jetty 9.3 requires JDK 8 +)
Read more Spring boot system requirements
What are the use of @EnableAutoConfiguration annotation?
This annotation tells Spring Boot to “guess” how you will want to configure Spring, based on the jar dependencies that you have added.
Read more @enableautoconfiguration spring boot example
//和最后一个一起看一下
- What is Spring Boot Starter?
Spring Boot provides a number of “Starters” that make easy to manage dependencies for your project.
Read More Spring boot starter
//一系列 starter
- What is spring-boot-starter-parent?
The spring-boot-starter-parent is a special starter that makes Maven or Gradle dependency-management easier by adding jars to your classpath.
Read More spring-boot-starter-parent
//需要看一下链接
- What is spring-boot-starter-web?
This starter will add Tomcat and Spring MVC dependency to our application and its default configuration.
Read More spring-boot-starter-web
//需要看一下链接
- How to create an executable jar using spring boot?
Add this below plugin to pom.xml
<build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins>
</build>
Use mvn clean package to create executable jar file
Read More spring boot executable jar example
- How do you run and stop spring boot executable jar?
Open cmd or shell window and use java -jar as shown below
$ java -jar myproject-0.0.1-SNAPSHOT.jar
To stop use ctrl+C
Read More run spring boot jar from command line
- How do you change JDK version in spring boot?
Java 1.6 as the default compiler level.
You can overwrite it by adding java.version property tag as shown below
<properties><java.version>1.8</java.version>
</properties>
- How to disable specific auto-configuration in spring boot?
You can use exclude property as shown below to disable specific auto configuration
@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})
- What is the use of @SpringBootApplication annotation?
The @SpringBootApplication annotation is equivalent to using @Configuration, @EnableAutoConfiguration and @ComponentScan with their default attributes
Since many spring Boot developers have their main class annotated with @Configuration, @EnableAutoConfiguration and @ComponentScan, spring boot provides you a new annotation @SpringBootApplication as replacement.
//这个三个注解的作用?
转载于:https://www.cnblogs.com/vicky-project/p/9192903.html
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