程序包 
程序包说明
org.springframework.boot
Core Spring Boot classes.
org.springframework.boot.admin
Administration support for Spring Boot applications.
org.springframework.boot.ansi
Support classes to provide ANSI color output.
org.springframework.boot.bind
Classes and utilities to help when binding spring based configuration files to objects.
org.springframework.boot.builder
Fluent 'builder' style API to construct a SpringApplication.
org.springframework.boot.cloud
Low level support for Cloud deployments.
org.springframework.boot.context
Classes related to Spring's ApplicationContext.
org.springframework.boot.context.annotation
Classes related to Spring's ApplicationContext annotations.
org.springframework.boot.context.config
External configuration support allowing 'application.properties' to be loaded and used within a Spring Boot application.
org.springframework.boot.context.embedded
Specialized ApplicationContext that supports embedded servlet containers.
org.springframework.boot.context.embedded.jetty
Support for Jetty EmbeddedServletContainers.
org.springframework.boot.context.embedded.tomcat
Support for Tomcat EmbeddedServletContainers.
org.springframework.boot.context.embedded.undertow
Support for Undertow EmbeddedServletContainers.
org.springframework.boot.context.event
ApplicationEvents triggered by Spring Boot.
org.springframework.boot.context.properties
Support for external configuration binding via the @ConfigurationProperties annotation.
org.springframework.boot.diagnostics
Support for failure analysis and reporting.
org.springframework.boot.diagnostics.analyzer
Internal FailureAnalyzer implementations.
org.springframework.boot.env
Spring Environment support.
org.springframework.boot.info 
org.springframework.boot.jackson
Custom enhancements and support for the Jackson project.
org.springframework.boot.jdbc 
org.springframework.boot.json
Support for parsing JSON.
org.springframework.boot.jta
Support for the Java Transaction API.
org.springframework.boot.jta.atomikos
Support classes for Atomikos JTA.
org.springframework.boot.jta.bitronix
Support classes for Bitronix JTA.
org.springframework.boot.jta.narayana
Support classes for Narayana JTA.
org.springframework.boot.lang
Language feature annotations.
org.springframework.boot.liquibase
Custom support for Liquibase database migration.
org.springframework.boot.logging
Support and abstractions across several logging libraries.
org.springframework.boot.logging.java
Support for 'Java Util Logging'.
org.springframework.boot.logging.log4j2
Support for the Log4j 2 logging library.
org.springframework.boot.logging.logback
Support for the Logback logging library.
org.springframework.boot.orm.jpa
JPA Support classes.
org.springframework.boot.orm.jpa.hibernate
Hibernate Support classes.
org.springframework.boot.system
General system support classes.
org.springframework.boot.type.classreading 
org.springframework.boot.validation
Utilities and classes related to validation.
org.springframework.boot.web.client 
org.springframework.boot.web.filter
Spring Boot specific Filter implementations.
org.springframework.boot.web.servlet
Classes and utilities designed to work with the `javax.servlet` specification.
org.springframework.boot.web.support 
org.springframework.boot.yaml
Spring Boot extensions to Spring Framework's support for parsing YAML.