springboot model的原理？

springboot model原理就是起步依赖和自动配置. 使用的是java语言。

起步依赖代表如下：

<modelVersion>4.0.0</modelVersion>

<parent>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-dependencies</artifactId>

<version>2.0.0.RELEASE</version>

<relativePath>../../spring-boot-dependencies</relativePath>

</parent>

<artifactId>spring-boot-starter-parent</artifactId>

<packaging>pom</packaging>

<name>Spring Boot Starter Parent</name>

<description>Parent pom providing dependency and plugin management for applications

built with Maven</description>

<url>

<properties>

<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

<java.version>1.8</java.version>

<resource.delimiter>@</resource.delimiter>

<maven.compiler.source>${java.version}</maven.compiler.source>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

<maven.compiler.target>${java.version}</maven.compiler.target>

</properties>

........................................

........................................

2、自动配置

<properties>

<activemq.version>5.15.3</activemq.version>

<antlr2.version>2.7.7</antlr2.version>

<appengine-sdk.version>1.9.62</appengine-sdk.version>

<artemis.version>2.4.0</artemis.version>

<aspectj.version>1.8.13</aspectj.version>

<assertj.version>3.9.1</assertj.version>

<atomikos.version>4.0.6</atomikos.version>

<bitronix.version>2.1.4</bitronix.version>

<build-helper-maven-plugin.version>3.0.0</build-helper-maven-plugin.version>

<byte-buddy.version>1.7.10</byte-buddy.version>

<caffeine.version>2.6.2</caffeine.version>

<cassandra-driver.version>3.4.0</cassandra-driver.version>

<classmate.version>1.3.4</classmate.version>

<commons-codec.version>1.11</commons-codec.version>

<commons-dbcp2.version>2.2.0</commons-dbcp2.version>

<commons-lang3.version>3.7</commons-lang3.version>

<commons-pool.version>1.6</commons-pool.version>

<commons-pool2.version>2.5.0</commons-pool2.version>

<couchbase-cache-client.version>2.1.0</couchbase-cache-client.version>

<couchbase-client.version>2.5.5</couchbase-client.version>

<derby.version>10.14.1.0</derby.version>

<dom4j.version>1.6.1</dom4j.version>

<dropwizard-metrics.version>3.2.6</dropwizard-metrics.version>

<ehcache.version>2.10.4</ehcache.version>

<ehcache3.version>3.5.0</ehcache3.version>

<elasticsearch.version>5.6.8</elasticsearch.version>

<embedded-mongo.version>2.0.3</embedded-mongo.version>

<exec-maven-plugin.version>1.5.0</exec-maven-plugin.version>

<flatten-maven-plugin.version>1.0.0</flatten-maven-plugin.version>

<flyway.version>5.0.7</flyway.version>

<freemarker.version>2.3.27-incubating</freemarker.version>

<git-commit-id-plugin.version>2.2.3</git-commit-id-plugin.version>

<glassfish-el.version>3.0.0</glassfish-el.version>

<groovy.version>2.4.13</groovy.version>

<gson.version>2.8.2</gson.version>

<h2.version>1.4.196</h2.version>

<hamcrest.version>1.3</hamcrest.version>

<hazelcast.version>3.9.3</hazelcast.version>

<hazelcast-hibernate5.version>1.2.3</hazelcast-hibernate5.version>

<hibernate.version>5.2.14.Final</hibernate.version>

<hibernate-validator.version>6.0.7.Final</hibernate-validator.version>

<hikaricp.version>2.7.8</hikaricp.version>

<hsqldb.version>2.4.0</hsqldb.version>

<htmlunit.version>2.29</htmlunit.version>

<httpasyncclient.version>4.1.3</httpasyncclient.version>

<httpclient.version>4.5.5</httpclient.version>

<httpcore.version>4.4.9</httpcore.version>

<infinispan.version>9.1.6.Final</infinispan.version>

<influxdb-java.version>2.9</influxdb-java.version>

<jackson.version>2.9.4</jackson.version>

<janino.version>3.0.8</janino.version>

<javax-annotation.version>1.3.2</javax-annotation.version>

<javax-cache.version>1.1.0</javax-cache.version>

<javax-jaxb.version>2.3.0</javax-jaxb.version>

<javax-jms.version>2.0.1</javax-jms.version>

<javax-json.version>1.1.2</javax-json.version>

<javax-jsonb.version>1.0</javax-jsonb.version>

<javax-mail.version>1.6.1</javax-mail.version>

<javax-money.version>1.0.1</javax-money.version>

<javax-transaction.version>1.2</javax-transaction.version>

<javax-validation.version>2.0.1.Final</javax-validation.version>

<jaxen.version>1.1.6</jaxen.version>

<jaybird.version>3.0.3</jaybird.version>

<jboss-logging.version>3.3.2.Final</jboss-logging.version>

<jboss-transaction-spi.version>7.6.0.Final</jboss-transaction-spi.version>

<jdom2.version>2.0.6</jdom2.version>

<jedis.version>2.9.0</jedis.version>

<jersey.version>2.26</jersey.version>

<jest.version>5.3.3</jest.version>

<jetty.version>9.4.8.v20171121</jetty.version>

<jetty-el.version>8.5.24.2</jetty-el.version>

<jetty-jsp.version>2.2.0.v</jetty-jsp.version>

<jmustache.version>1.14</jmustache.version>

<jna.version>4.5.1</jna.version>

<joda-time.version>2.9.9</joda-time.version>

<johnzon-jsonb.version>1.1.6</johnzon-jsonb.version>

<jolokia.version>1.5.0</jolokia.version>

<jooq.version>3.10.5</jooq.version>

<jsonassert.version>1.5.0</jsonassert.version>

<json-path.version>2.4.0</json-path.version>

<jstl.version>1.2</jstl.version>

<jtds.version>1.3.1</jtds.version>

<junit.version>4.12</junit.version>

<junit-jupiter.version>5.1.0</junit-jupiter.version>

<junit-platform.version>1.1.0</junit-platform.version>

<kotlin.version>1.2.21</kotlin.version>

<lettuce.version>5.0.2.RELEASE</lettuce.version>

<liquibase.version>3.5.5</liquibase.version>

<log4j2.version>2.10.0</log4j2.version>

<logback.version>1.2.3</logback.version>

<lombok.version>1.16.20</lombok.version>

<mariadb.version>2.2.2</mariadb.version>

<maven-antrun-plugin.version>1.8</maven-antrun-plugin.version>

<maven-assembly-plugin.version>3.1.0</maven-assembly-plugin.version>

<maven-clean-plugin.version>3.0.0</maven-clean-plugin.version>

<maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>

<maven-dependency-plugin.version>3.0.1</maven-dependency-plugin.version>

<maven-deploy-plugin.version>2.8.2</maven-deploy-plugin.version>

<maven-eclipse-plugin.version>2.10</maven-eclipse-plugin.version>

<maven-enforcer-plugin.version>3.0.0-M1</maven-enforcer-plugin.version>

<maven-failsafe-plugin.version>2.20.1</maven-failsafe-plugin.version>

<maven-help-plugin.version>2.2</maven-help-plugin.version>

<maven-install-plugin.version>2.5.2</maven-install-plugin.version>

<maven-invoker-plugin.version>3.0.0</maven-invoker-plugin.version>

<maven-jar-plugin.version>3.0.2</maven-jar-plugin.version>

<maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>

<maven-resources-plugin.version>3.0.1</maven-resources-plugin.version>

<maven-shade-plugin.version>2.4.3</maven-shade-plugin.version>

<maven-site-plugin.version>3.6</maven-site-plugin.version>

<maven-source-plugin.version>3.0.1</maven-source-plugin.version>

<maven-surefire-plugin.version>2.20.1</maven-surefire-plugin.version>

<maven-war-plugin.version>3.1.0</maven-war-plugin.version>

<micrometer.version>1.0.1</micrometer.version>

<mockito.version>2.15.0</mockito.version>

<mongodb.version>3.6.3</mongodb.version>

<mongo-driver-reactivestreams.version>1.7.1</mongo-driver-reactivestreams.version>

<mssql-jdbc.version>6.2.2.jre8</mssql-jdbc.version>

<mysql.version>5.1.45</mysql.version>

<narayana.version>5.8.0.Final</narayana.version>

<nekohtml.version>1.9.22</nekohtml.version>

<neo4j-ogm.version>3.1.0</neo4j-ogm.version>

<netty.version>4.1.22.Final</netty.version>

<nio-multipart-parser.version>1.1.0</nio-multipart-parser.version>

<postgresql.version>42.2.1</postgresql.version>

<quartz.version>2.3.0</quartz.version>

<querydsl.version>4.1.4</querydsl.version>

<rabbit-amqp-client.version>5.1.2</rabbit-amqp-client.version>

<reactive-streams.version>1.0.2</reactive-streams.version>

<reactor-bom.version>Bismuth-SR7</reactor-bom.version>

<rest-assured.version>3.0.7</rest-assured.version>

<rxjava.version>1.3.6</rxjava.version>

<rxjava2.version>2.1.10</rxjava2.version>

<rxjava-adapter.version>1.2.1</rxjava-adapter.version>

<selenium.version>3.9.1</selenium.version>

<selenium-htmlunit.version>2.29.2</selenium-htmlunit.version>

<sendgrid.version>4.1.2</sendgrid.version>

<servlet-api.version>3.1.0</servlet-api.version>

<simple-json.version>1.1.1</simple-json.version>

<slf4j.version>1.7.25</slf4j.version>

<snakeyaml.version>1.19</snakeyaml.version>

<solr.version>6.6.2</solr.version>

<spring.version>5.0.4.RELEASE</spring.version>

<spring-amqp.version>2.0.2.RELEASE</spring-amqp.version>

<spring-batch.version>4.0.0.RELEASE</spring-batch.version>

<spring-cloud-connectors.version>2.0.1.RELEASE</spring-cloud-connectors.version>

<spring-data-releasetrain.version>Kay-SR5</spring-data-releasetrain.version>

<spring-hateoas.version>0.24.0.RELEASE</spring-hateoas.version>

<spring-integration.version>5.0.3.RELEASE</spring-integration.version>

<spring-kafka.version>2.1.4.RELEASE</spring-kafka.version>

<spring-ldap.version>2.3.2.RELEASE</spring-ldap.version>

<spring-plugin.version>1.2.0.RELEASE</spring-plugin.version>

<spring-restdocs.version>2.0.0.RELEASE</spring-restdocs.version>

<spring-retry.version>1.2.2.RELEASE</spring-retry.version>

<spring-security.version>5.0.3.RELEASE</spring-security.version>

<spring-session-bom.version>Apple-SR1</spring-session-bom.version>

<spring-ws.version>3.0.0.RELEASE</spring-ws.version>

<sqlite-jdbc.version>3.21.0.1</sqlite-jdbc.version>

<statsd-client.version>3.1.0</statsd-client.version>

<sun-mail.version>1.6.1</sun-mail.version>

<thymeleaf.version>3.0.9.RELEASE</thymeleaf.version>

<thymeleaf-extras-data-attribute.version>2.0.1</thymeleaf-extras-data-attribute.version>

<thymeleaf-extras-java8time.version>3.0.1.RELEASE</thymeleaf-extras-java8time.version>

<thymeleaf-extras-springsecurity4.version>3.0.2.RELEASE</thymeleaf-extras-springsecurity4.version>

<thymeleaf-layout-dialect.version>2.3.0</thymeleaf-layout-dialect.version>

<tomcat.version>8.5.28</tomcat.version>

<unboundid-ldapsdk.version>4.0.4</unboundid-ldapsdk.version>

<undertow.version>1.4.22.Final</undertow.version>

<versions-maven-plugin.version>2.3</versions-maven-plugin.version>

<webjars-hal-browser.version>3325375</webjars-hal-browser.version>

<webjars-locator-core.version>0.35</webjars-locator-core.version>

<wsdl4j.version>1.6.3</wsdl4j.version>

<xml-apis.version>1.4.01</xml-apis.version>

<xml-maven-plugin.version>1.0.1</xml-maven-plugin.version>

<xmlunit2.version>2.5.1</xmlunit2.version>

</properties>。

3.属性映射如下：

{

sourceType: org.springframework.boot.autoconfigure.web.ServerProperties,

defaultValue: 8080,

name: server.port,

description: Server HTTP port.,

type: java.lang.Integer

}。