Where possible, code that previously synchronized on this (or on the
class in the case of static methods) has been updated to use an
internal monitor object instead. This allows the locking model that's
employed to be an implementation detail rather than part of the
class's API.
Classes that override a synchronized method continue to declare
the overriding method as synchronized. This ensures that locking
is consistent across the superclass and its subclass.
Closes gh-6262
= Spring Boot Samples
The following sample applications are provided:
|===
| Sample | Description
| link:spring-boot-sample-activemq[spring-boot-sample-activemq]
| JMS consumer and producer using Apache ActiveMQ
| link:spring-boot-sample-actuator[spring-boot-sample-actuator]
| REST service with production-ready features
| link:spring-boot-sample-actuator-log4j2[spring-boot-sample-actuator-log4j2]
| Production-ready features using log4j 2 for logging (instead of logback)
| link:spring-boot-sample-actuator-noweb[spring-boot-sample-actuator-noweb]
| Non-web application with production-ready features
| link:spring-boot-sample-actuator-ui[spring-boot-sample-actuator-ui]
| Web UI example with production-ready features
| link:spring-boot-sample-amqp[spring-boot-sample-amqp]
| Message-oriented application using AMQP and RabbitMQ
| link:spring-boot-sample-ant[spring-boot-sample-ant]
| Executable JAR build using Ant
| link:spring-boot-sample-aop[spring-boot-sample-aop]
| Demonstrates explicit usage of Spring AOP
| link:spring-boot-sample-atmosphere[spring-boot-sample-atmosphere]
| Chat service built using Atmosphere
| link:spring-boot-sample-batch[spring-boot-sample-batch]
| Define and run a Batch job in a few lines of code
| link:spring-boot-sample-cache[spring-boot-sample-cache]
| Web application that uses Spring's cache abstraction
| link:spring-boot-sample-data-cassandra[spring-boot-sample-data-cassandra]
| Stores data using Spring Data Cassandra
| link:spring-boot-sample-data-couchbase[spring-boot-sample-data-couchbase]
| Stores data using Spring Data Couchbase
| link:spring-boot-sample-data-elasticsearch[spring-boot-sample-data-elasticsearch]
| Stores data using Spring Data Elasticsearch
| link:spring-boot-sample-data-gemfire[spring-boot-sample-data-gemfire]
| Stores data using Spring Data GemFire
| link:spring-boot-sample-data-jpa[spring-boot-sample-data-jpa]
| Stores data using Spring Data JPA with Hibernate
| link:spring-boot-sample-data-mongodb[spring-boot-sample-data-mongodb]
| Stores data using Spring Data MongoDB
| link:spring-boot-sample-data-neo4j[spring-boot-sample-data-neo4j]
| Stores data using Spring Data Neo4j
| link:spring-boot-sample-data-redis[spring-boot-sample-data-redis]
| Stores data using Spring Data Redis
| link:spring-boot-sample-data-rest[spring-boot-sample-data-rest]
| RESTful service built using Spring Data REST
| link:spring-boot-sample-data-solr[spring-boot-sample-data-solr]
| Stores data using Spring Data Solr
| link:spring-boot-sample-devtools[spring-boot-sample-devtools]
| Using DevTools for rapid application development
| link:spring-boot-sample-flyway[spring-boot-sample-flyway]
| Database migrations with Flyway
| link:spring-boot-sample-hateoas[spring-boot-sample-hateoas]
| RESTful API built using Spring Hateoas
| link:spring-boot-sample-hibernate4[spring-boot-sample-hibernate4]
| Demonstrates how to use Hibernate 4
| link:spring-boot-sample-hibernate4[spring-boot-sample-hibernate52]
| Demonstrates how to use Hibernate 5.2
| link:spring-boot-sample-hornetq[spring-boot-sample-hornetq]
| Message-oriented application using HornetQ
| link:spring-boot-sample-hypermedia[spring-boot-sample-hypermedia]
| Demonstrates Actuator's hypermedia support, including HAL Browser
| link:spring-boot-sample-hypermedia-gson[spring-boot-sample-hypermedia-gson]
| Demonstrates Actuator's hypermedia support using GSON in place of Jackson
| link:spring-boot-sample-hypermedia-jpa[spring-boot-sample-hypermedia-jpa]
| Demonstrates Actuator's hypermedia support alongside Spring Data JPA and Spring Data
REST
| link:spring-boot-sample-hypermedia-ui[spring-boot-sample-hypermedia-ui]
| Demonstrates Actuator's hypermedia support alongside a static web UI
| link:spring-boot-sample-integration[spring-boot-sample-integration]
| Integration application built using Spring Integration and its Java DSL
| link:spring-boot-sample-jersey[spring-boot-sample-jersey]
| RESTful service built using Jersey 2
| link:spring-boot-sample-jersey1[spring-boot-sample-jersey1]
| RESTful service built using Jersey
| link:spring-boot-sample-jetty[spring-boot-sample-jetty]
| Embedded Jetty
| link:spring-boot-sample-jetty-ssl[spring-boot-sample-jetty-ssl]
| Embedded Jetty configured to use SSL
| link:spring-boot-sample-jetty-jsp[spring-boot-sample-jetty-jsp]
| Web application that uses JSP templates with Jetty
| link:spring-boot-sample-jetty8[spring-boot-sample-jetty8]
| Embedded Jetty 8
| link:spring-boot-sample-jetty8-ssl[spring-boot-sample-jetty8-ssl]
| Embedded Jetty 8 SSL
| link:spring-boot-sample-jetty92[spring-boot-sample-jetty92]
| Embedded Jetty 9.2
| link:spring-boot-sample-jooq[spring-boot-sample-jooq]
| Stores data using jOOQ
| link:spring-boot-sample-jpa[spring-boot-sample-jpa]
| Uses plain JPA (Hibernate)
| link:spring-boot-sample-jta-atomikos[spring-boot-sample-jta-atomikos]
| JTA transactions with Atomikos
| link:spring-boot-sample-jta-bitronix[spring-boot-sample-jta-bitronix]
| JTA transactions with Bitronix
| link:spring-boot-sample-jta-jndi[spring-boot-sample-jta-jndi]
| JTA transactions using a `TransactionManager` and `DataSource` from JNDI
| link:spring-boot-sample-jta-narayana[spring-boot-sample-jta-narayana]
| JTA transactions with Narayana
| link:spring-boot-sample-liquibase[spring-boot-sample-liquibase]
| Database migrations with Liquibase
| link:spring-boot-sample-logback[spring-boot-sample-logback]
| Demonstrates Spring Boot's custom Logback functionality configured in logback-spring.xml
| link:spring-boot-sample-metrics-dropwizard[spring-boot-sample-metrics-dropwizard]
| Demonstrates support for Dropwizard metrics
| link:spring-boot-sample-metrics-opentsdb[spring-boot-sample-metrics-opentsdb]
| Exports metrics to OpenTSDB
| link:spring-boot-sample-metrics-redis[spring-boot-sample-metrics-redis]
| Exports metrics to Redis
| link:spring-boot-sample-parent-context[spring-boot-sample-parent-context]
| Application that uses an `ApplicationContext` with a parent
| link:spring-boot-sample-profile[spring-boot-sample-profile]
| Demonstrates some of Spring Framework's `@Profile` capabilities
| link:spring-boot-sample-property-validation[spring-boot-sample-property-validation]
| Demonstrates the usage of `@ConfigurationProperties` with a Spring `Validator`
| link:spring-boot-sample-secure[spring-boot-sample-secure]
| Non-web application that uses Spring Security
| link:spring-boot-sample-secure-oauth2[spring-boot-sample-secure-oauth2]
| RESTful service secured using OAuth2
| link:spring-boot-sample-secure-oauth2-resource[spring-boot-sample-secure-oauth2-resource]
| OAuth2 resource server
| link:spring-boot-sample-servlet[spring-boot-sample-servlet]
| Web application with a "raw" `Servlet` returning plain text content
| link:spring-boot-sample-session-redis[spring-boot-sample-session-redis]
| Web Application that uses Spring Session to store session data in Redis
| link:spring-boot-sample-simple[spring-boot-sample-simple]
| Simple command line application
| link:spring-boot-sample-test[spring-boot-sample-test]
| Demonstrates Spring Boot's testing capabilities
| link:spring-boot-sample-testng[spring-boot-sample-testng]
| Demonstrates TestNG-based testing
| link:spring-boot-sample-tomcat[spring-boot-sample-tomcat]
| Embedded Tomcat
| link:spring-boot-sample-tomcat-jsp[spring-boot-sample-tomcat-jsp]
| Web application that uses JSP templates with Tomcat
| link:spring-boot-sample-tomcat-multi-connectors[spring-boot-sample-tomcat-multi-connectors]
| Web application that uses Tomcat configured with multiple connectors
| link:spring-boot-sample-tomcat-ssl[spring-boot-sample-tomcat-ssl]
| Web application that uses Tomcat configured with SSL
| link:spring-boot-sample-tomcat7-jsp[spring-boot-sample-tomcat7-jsp]
| Web application that uses JSP templates with Tomcat 7
| link:spring-boot-sample-tomcat7-ssl[spring-boot-sample-tomcat7-ssl]
| Web application that uses Tomcat 7 configured with SSL
| link:spring-boot-sample-tomcat80-ssl[spring-boot-sample-tomcat80-ssl]
| Web application that uses Tomcat 8.0 configured with SSL
| link:spring-boot-sample-traditional[spring-boot-sample-traditional]
| Traditional WAR packaging (but also executable using `java -jar`)
| link:spring-boot-sample-undertow[spring-boot-sample-undertow]
| Embedded Undertow
| link:spring-boot-sample-undertow-ssl[spring-boot-sample-undertow-ssl]
| Embedded Undertow configured to use SSL
| link:spring-boot-sample-velocity[spring-boot-sample-velocity]
| Non-web application that uses Velocity templates
| link:spring-boot-sample-war[spring-boot-sample-war]
| Web application packaged as a war file
| link:spring-boot-sample-web-freemarker[spring-boot-sample-web-freemarker]
| Web application that uses Freemarker templates
| link:spring-boot-sample-web-groovy-templates[spring-boot-sample-web-groovy-templates]
| Web application that uses Groovy templates
| link:spring-boot-sample-web-jsp[spring-boot-sample-web-jsp]
| Web application that uses JSP templates
| link:spring-boot-sample-web-method-security[spring-boot-sample-web-method-security]
| Web application with Security configuration enabling global method security
| link:spring-boot-sample-web-mustache[spring-boot-sample-web-mustache]
| Web application that uses Mustache views
| link:spring-boot-sample-web-secure[spring-boot-sample-web-secure]
| Web application with typical Security configuration enabling a login form
| link:spring-boot-sample-web-secure-custom[spring-boot-sample-web-secure-custom]
| Web application with custom Spring Security configuration
| link:spring-boot-sample-web-secure-github[spring-boot-sample-web-secure-github]
| Web application with Spring Security configured to authenticate with GitHub using OAuth2
| link:spring-boot-sample-web-secure-jdbc[spring-boot-sample-web-secure-jdbc]
| Web application with Spring Security configured to use JDBC authentication
| link:spring-boot-sample-web-static[spring-boot-sample-web-static]
| Web application that serves static files
| link:spring-boot-sample-web-ui[spring-boot-sample-web-ui]
| Web application with a basic UI built using Bootstrap and JQuery
| link:spring-boot-sample-web-velocity[spring-boot-sample-web-velocity]
| Web application that uses Velocity templates
| link:spring-boot-sample-webservices[spring-boot-sample-webservices]
| Simple contract-first SOAP web service with Spring Web Services
| link:spring-boot-sample-websocket-jetty[spring-boot-sample-websocket-jetty]
| WebSocket application that uses Jetty
| link:spring-boot-sample-websocket-tomcat[spring-boot-sample-websocket-tomcat]
| WebSocket application that uses Tomcat
| link:spring-boot-sample-websocket-undertow[spring-boot-sample-websocket-undertow]
| WebSocket application that uses Undertow
| link:spring-boot-sample-xml[spring-boot-sample-xml]
| Example show how Spring Boot can be mixed with traditional XML configuration (we
generally recommend using Java `@Configuration` whenever possible
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