Question

Spring Boot 起步依赖大大简化了项目构建说明中的依赖配置，因为常用的依赖聚合于更粗粒度的依赖。你的构建项目会传递解析到起步依赖中声明的其他依赖。

起步依赖不仅能让构建说明中的依赖配置更简单，还根据提供给应用程序的功能将它们组织到一起。例如，与其指定用于验证的特定库（比如 Hibernate Validator 和 Tomcat 的内嵌表达式语言），还不如简单地添加 spring-boot-starter-validation 起步依赖。

表 B-1 列出了 Spring Boot 的所有起步依赖，还有它们传递声明的依赖。

表 B-1 Spring Boot 起步依赖

起步依赖 （Group ID： org.springframework.boot ）	传递依赖
spring-boot-starter	• org.springframework.boot:spring-boot • org.springframework.boot:spring-boot-autoconfigure • org.springframework.boot:spring-boot-starter- logging • org.springframework:spring-core (excludes commons-logging:commons-logging) • org.yaml:snakeyaml
spring-boot-starter- actuator	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-actuator
spring-boot-starter- amqp	• org.springframework.boot:spring-boot-starter • org.springframework:spring-messaging • org.springframework.amqp:spring-rabbit
spring-boot-starter- aop	• org.springframework.boot:spring-boot-starter • org.springframework:spring-aop • org.aspectj:aspectjrt • org.aspectj:aspectjweaver
spring-boot-starter- artemis	• org.springframework.boot:spring-boot-starter • org.springframework:spring-jms • org.apache.activemq:artemis-jms-client
spring-boot-starter- batch	• org.springframework.boot:spring-boot-starter • org.hsqldb:hsqldb • org.springframework:spring-jdbc • org.springframework.batch:spring-batch-core
spring-boot-starter- cache	• org.springframework.boot:spring-boot-starter • org.springframework:spring-context • org.springframework:spring-context-support
spring-boot-starter- cloud-connectors	• org.springframework.boot:spring-boot-starter • org.springframework.cloud:spring-cloud-spring- service-connector • org.springframework.cloud:spring-cloud- cloudf-oundry-connector • org.springframework.cloud:spring-cloud- heroku-connector • org.springframework.cloud:spring-cloud- local-config-connector
spring-boot-starter- data-elasticsearch	• org.springframework.boot:spring-boot-starter • org.springframework.data:spring-data-elasticsearch
spring-boot-starter- data-gemfire	• org.springframework.boot:spring-boot-starter • com.gemstone.gemfire:gemfire(excludes commons- logging:commons-logging) • org.springframework.data:spring-data-gemfire
spring-boot-starter- data-jpa	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-aop • org.springframework.boot:spring-boot-starter-jdbc • org.hibernate:hibernate-entitymanager (excludes_org.jboss.spec.javax.transaction:jboss- transaction-api_1.2_spec) • javax.transaction:javax.transaction-api • org.springframework.data:spring-data-jpa • org.springframework:spring-aspects
spring-boot-starter- data-mongodb	• org.springframework.boot:spring-boot-starter • org.mongodb:mongo-java-driver • org.springframework.data:spring-data-mongodb
spring-boot-starter- data-rest	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-web • com.fasterxml.jackson.core:jackson-annotations • com.fasterxml.jackson.core:jackson-databind • org.springframework.data:spring-data-rest-webmvc
spring-boot-starter- data-solr	• org.springframework.boot:spring-boot-starter • org.apache.solr:solr-solrj (excludes log4j:log4j) • org.springframework.data:spring-data-solr • org.apache.httpcomponents:httpmime
spring-boot-starter- freemarker	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-web • org.freemarker:freemarker • org.springframework:spring-context-support
spring-boot-starter- groovy-templates	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-web • org.codehaus.groovy:groovy-templates
spring-boot-starter- hateoas	• org.springframework.boot:spring-boot-starter-web • org.springframework.hateoas:spring-hateoas • org.springframework.plugin:spring-plugin-core
spring-boot-starter- hornetq	• org.springframework.boot:spring-boot-starter • org.springframework:spring-jms • org.hornetq:hornetq-jms-client
spring-boot-starter- integration	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-aop • org.springframework.integration:spring- integration-core • org.springframework.integration:spring- integration-file • org.springframework.integration:spring- integration-http • org.springframework.integration:spring- integration-ip • org.springframework.integration:spring- integration-stream
spring-boot-starter- jdbc	• org.springframework.boot:spring-boot-starter • org.apache.tomcat:tomcat-jdbc • org.springframework:spring-jdbc
spring-boot-starter- jersey	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter- tomcat • org.springframework.boot:spring-boot-starter- validation • com.fasterxml.jackson.core:jackson-databind • org.springframework:spring-web • org.glassfish.jersey.core:jersey-server • org.glassfish.jersey.containers:jersey-container- servlet-core • org.glassfish.jersey.containers:jersey-container- servlet • org.glassfish.jersey.ext:jersey-bean-validation (excludes javax.el:javax.el-api, org.glassfish.web: javax.el) • org.glassfish.jersey.ext:jersey-spring3 • org.glassfish.jersey.media:jersey-media-json-jackson
spring-boot-starter- jetty	• org.eclipse.jetty:jetty-servlets • org.eclipse.jetty:jetty-webapp • org.eclipse.jetty.websocket:websocket-server • org.eclipse.jetty.websocket:javax-websocket- server-impl
spring-boot-starter- jooq	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-jdbc • org.springframework:spring-tx • org.jooq:jooq
spring-boot-starter- jta-atomikos	• org.springframework.boot:spring-boot-starter • com.atomikos:transactions-jms • com.atomikos:transactions-jta (excludes org.apache.geronimo.specs:geronimo- jta_1.0.1B_spec) • com.atomikos:transactions-jdbc • javax.transaction:javax.transaction-api
spring-boot-starter- jta-bitronix	• org.springframework.boot:spring-boot-starter • javax.jms:jms-api • javax.transaction:javax.transaction-api • org.codehaus.btm:btm (excludes javax.transaction: jta)
spring-boot-starter- log4j	• org.slf4j:jcl-over-slf4j • org.slf4j:jul-to-slf4j • org.slf4j:slf4j-log4j12 • log4j:log4j
spring-boot-starter- log4j2	• org.apache.logging.log4j:log4j-slf4j-impl • org.apache.logging.log4j:log4j-api • org.apache.logging.log4j:log4j-core • org.slf4j:jcl-over-slf4j • org.slf4j:jul-to-slf4j
spring-boot-starter- logging	• ch.qos.logback:logback-classic • org.slf4j:jcl-over-slf4j • org.slf4j:jul-to-slf4j • org.slf4j:log4j-over-slf4j
spring-boot-starter- mail	• org.springframework.boot:spring-boot-starter • org.springframework:spring-context • org.springframework:spring-context-support • com.sun.mail:javax.mail
spring-boot-starter- mobile	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-web • org.springframework.mobile:spring-mobile-device
spring-boot-starter- mustache	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-web • com.samskivert:jmustache
spring-boot-starter- redis	• org.springframework.boot:spring-boot-starter • org.springframework.data:spring-data-redis • redis.clients:jedis
spring-boot-starter- remote-shell	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter- actuator • org.crashub:crash.cli • org.crashub:crash.connectors.ssh(excludes org. codehaus.groovy:groovy-all) • org.crashub:crash.connectors.telnet (excludes javax. servlet:servlet-api,log4j:log4j,commons-logging: commonslogging) • org.crashub:crash.embed.spring(excludes org.spring- framework:spring-web,org.codehaus.groovy:groovy-all) • org.crashub:crash.plugins.cron (excludes org. codehaus.groovy:groovy-all) • org.crashub:crash.plugins.mail (excludes org. codehaus.groovy:groovy-all) • org.crashub:crash.shell(excludes org.codehaus. groovy:groovy-all) • org.codehaus.groovy:groovy
spring-boot-starter- security	• org.springframework.boot:spring-boot-starter • org.springframework:spring-aop • org.springframework.security:spring-security-config • org.springframework.security:spring-security-web
spring-boot-starter- social-facebook	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-web • org.springframework.social:spring-social-config • org.springframework.social:spring-social-core • org.springframework.social:spring-social-web • org.springframework.social:spring-social-facebook
spring-boot-starter- social-linkedin	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-web • org.springframework.social:spring-social-config • org.springframework.social:spring-social-core • org.springframework.social:spring-social-web • org.springframework.social:spring-social-linkedin
spring-boot-starter- social-twitter	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-web • org.springframework.social:spring-social-config • org.springframework.social:spring-social-core • org.springframework.social:spring-social-web • org.springframework.social:spring-social-twitter
spring-boot-starter- tes	• junit:junit • org.mockito:mockito-core • org.hamcrest:hamcrest-core • org.hamcrest:hamcrest-library • org.springframework:spring-core(excludes commons- logging:commons-logging) • org.springframework:spring-test
spring-boot-starter- thymeleaf	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-web • org.thymeleaf:thymeleaf-spring4 • nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect
spring-boot-starter- tomcat	• org.apache.tomcat.embed:tomcat-embed-core • org.apache.tomcat.embed:tomcat-embed-el • org.apache.tomcat.embed:tomcat-embed-logging-juli • org.apache.tomcat.embed:tomcat-embed-websocket
spring-boot-starter- undertow	• io.undertow:undertow-core • io.undertow:undertow-servlet(excludes org.jboss. spec.javax.servlet:jboss-servlet-api_3.1_spec) • io.undertow:undertow-websockets-jsr • javax.servlet:javax.servlet-api • org.glassfish:javax.el
spring-boot-starter- validation	• org.springframework.boot:spring-boot-starter • org.apache.tomcat.embed:tomcat-embed-el • org.hibernate:hibernate-validator
spring-boot-starter- velocity	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-web • commons-beanutils:commons-beanutils • commons-collections:commons-collections • commons-digester:commons-digester • org.apache.velocity:velocity • org.apache.velocity:velocity-tools • org.springframework:spring-context-support
spring-boot-starter- web	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter- tomcat • org.springframework.boot:spring-boot-starter- validation • com.fasterxml.jackson.core:jackson-databind • org.springframework:spring-web • org.springframework:spring-webmvc
spring-boot-starter- websocket	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-web • org.springframework:spring-messaging • org.springframework:spring-websocket
spring-boot-starter- ws	• org.springframework.boot:spring-boot-starter • org.springframework.boot:spring-boot-starter-web • org.springframework:spring-jms • org.springframework:spring-oxm • org.springframework.ws:spring-ws-core • org.springframework.ws:spring-ws-support