The Spring UpdateRoy Clarkson | Glenn Renfro | Gunnar Hillert

Spring

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Spring Data

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Core Jpa Gemfire REST

KeyValue MongoDB Redis

Solr

Foundational Store Modules Web Apis

Core Modules

Community Modules

ElasticSearch Cassandra

Couchbase Neo4j

Spring Social

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Spring 4.2

• @AliasFor

• Hibernate5 Support

• JMS Improvements

• Support for Money, Currency and TimeZone (Formatter / ConversionService)

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• Used to declare aliases between attributes within an annotation

• e.g., locations and value in @ContextConfiguration, or path and value in @RequestMapping

• Used in composed annotations

@AliasFor

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https://github.com/sbrannen/spring-composed

Spring 4.2 Testing• Support for HtmlUnit incl. Selenium Webdriver

integration

• @Commit instead @Rollback(false)

• ContextCache is public Api

• @Sql

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@Test@Sql(statements = "DROP TABLE user IF EXISTS")@Sql(scripts = “/test-schema.sql", statements = "INSERT INTO user VALUES ('Dilbert')")

JUnit Rules • SpringClassRule & SpringMethodRule

• Can be used with any JUnit runner

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@RunWith(Parameterized.class)@ContextConfigurationpublic class ParameterizedSpringRuleTests {@ClassRule

public static final SpringClassRule SPRING_CLASS_RULE = new SpringClassRule();@Rule

public final SpringMethodRule springMethodRule = new SpringMethodRule();

Embedded DBs• Unique Names for Embedded Databases

• Why? Recreating an embedded database within the same JVM doesn’t actually create anything: a second attempt simply connects to the existing one.

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@Bean

public DataSource dataSource() { return new EmbeddedDatabaseBuilder() .generateUniqueName(true) .addScript("schema.sql") .addScript("user_data.sql") .build();}

Spring Web

• SimpUserRegistry

• CompletableFuture (Java 8)

• OkHTTP Integration with RestTemplate

• ScriptTemplateView

• JavaScript view templating, Nashorn (JDK 8)

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HTTP Caching• CacheControl builder

• A builder for creating "Cache-Control" HTTP response headers.

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@Configuration@EnableWebMvcpublic class WebConfig extends WebMvcConfigurerAdapter {

@Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/resources/**") .addResourceLocations("/public-resources/") .setCacheControl(CacheControl.maxAge(1,TimeUnit.HOURS)

.cachePublic()); }}

HTTP Caching

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@RequestMapping("/book/{id}")public ResponseEntity<Book> showBook(@PathVariable Long id) {

Book book = findBook(id); String version = book.getVersion();

return ResponseEntity .ok() .cacheControl(CacheControl.maxAge(30, TimeUnit.DAYS)) .eTag(version) // lastModified is also available .body(book);}

• Usage in Controllers

Spring Web• Cross-origin resource sharing (CORS)

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@CrossOrigin(maxAge = 3600)@RestController@RequestMapping("/account")public class AccountController {

@CrossOrigin(origins = "http://domain2.com")@RequestMapping("/{id}")public Account retrieve(@PathVariable Long id) { … }

@RequestMapping(method = RequestMethod.DELETE, value = "/{id}")public void remove(@PathVariable Long id) { … }

}

Async

• Spring 3.2 Async Request Handling

• Spring 4.0 WebSocket Messaging (SockJS + Stomp)

• Spring 4.2 HttpStreaming

• Spring 4.2 Server-Sent Events (SSE)

• Spring 4.2 Direct Streaming

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Server-Sent Events

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@RequestMapping("/metrics")public SseEmitter subscribeMetrics() { SseEmitter emitter = new SseEmitter();

// Save emitter for further usage return emitter;}

Spring 4.3

• Refinements

• A richer set of convenience annotations (pre-composed)

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Spring 5• Q4 2016

• Comprehensive JDK 9 support

• Java 8 baseline

• Servlet 3.0+

• HTTP/2

• Reactive support

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https://github.com/spring-projects/spring-reactive

Spring Boot 1.3

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Pathway to #NoXML

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July 14 Sep 14 Nov 14 Jan 15 Mar 15 May 15 Jul 15

Spring Boot Adoption

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• https://spring.io/blog/2013/03/04/spring-at-china-scale-alibaba-group-alipay-taobao-and-tmall/

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“AliExpress is the beginning of a new effort to re-architect Taobao.com and Alipay.com for microservices and cloud native, built on Spring Boot and Spring Cloud.”

- Leijuan, Principal Engineer, AliExpress

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Boot 1.3• Spring 4.2 and Spring Security 4.0

• OAuth2 Support

• Colorful Ascii Art Banners

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Boot 1.3

• Fully executable JARs and service support

• Start as Unix/Linux services

• init.d

• systemd

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$ ./myapp.jar

Boot 1.3• Additional Health Indicators

• Actuator Metrics (Java 8)

• New actuator endpoints - e.g. /logfile

• Hypermedia for MVC actuator endpoints

• Actuator docs endpoint

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Boot 1.3• Spring Session Autoconfiguration

• Persistent sessions (Opt-in)

• Ant Support

• Support for @WebServlet, @WebFilter, and @WebListener

• When using an embedded servlet container, automatic registration of @WebServlet, @WebFilter, and @WebListener annotated classes can now be enabled using @ServletComponentScan.

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Logging• Logback

• Spring Profile specific Configuration

• Use Environment Properties in Logback’

• logback-spring.xml

• Log4J 1.x deprecated

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https://blogs.apache.org/foundation/entry/apache_logging_services_project_announces

Boot Developer Tools• Property Defaults

• Automatic application restarts

• Remote development support

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http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-devtools

Boot Developer Tools• LiveReload support

• Install LiveReload browser plugin

• Bowser Refresh Button

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<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> </dependency>

Caching• @EnableCaching

• Auto-configuration now for:

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JSR 107Guava

Boot and SPAs

• Web jars - /webjars/**

• /static, /public, /resources, /META-INF/resources

• Creating modular jars

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Demo

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https://github.com/ghillert/botanic-ng

Migrating to 1.3• https://github.com/spring-projects/spring-boot/

wiki/Spring-Boot-1.3-Release-Notes

• Several properties changed

• Dependency updates

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JSPs and Web.xml

• JSP limitations for über-Jars

• Servlet 3.0 to the rescue

• /META-INF/resources/WEB-INF/jsp

• Possible to Eliminate Web.xml

• TomcatEmbeddedServletContainerFactory

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Demo

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https://github.com/devnexus/devnexus-site

JSPs with

Spring Initializr• http://start.spring.io

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Tooling - STS• Spring Boot YML properties editor

• with code completion

• Improved support for Cloud Foundry

• Support for Spring Boot DevTools

• Attach Java debugger to CF deployed apps

• Spring Boot Dashboard

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• Service Discovery

• Circuit Breaker

• Client Side Load Balancer

• Router and Filter

• Spring Cloud Stream + Data Flow

• Distributed tracing

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Spring Cloud

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Eureka

Hystrix

Spring Cloud

Consul

12 factor app principles

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Codebase Depen-dencies Config Backing

Services

Build Release

RunProcesses Port

Binding Concurrency

Disposa-bility

Dev/Prod Parity Logs Admin

Processes

http://12factor.net

Demo

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https://github.com/springone2gx2015/vehicle-fleet-demo

Demo

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Spring & Cloud Native

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Core Boot Connectors Service

Registry Config Server

Circuit Breaker

Ops Dev

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#fundJUnit

• Pivotal sponsoring JUnit

• Developer Sponsor

• 6 weeks of senior developer

• Campaign Sponsor

• €5000 donation

Books

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http://pivotal.io/platform/migrating-to-

cloud-native-application-

architectures-ebook

Books

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Books

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• Full-Day Workshop

• Several Spring Speakers

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Delivering Cloud Native Applications with Spring

and Cloud Foundry

Questions?

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Thank You!

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Credits: Justin Blake, nathanbui, Bohdan Burmich, David Waschbüsch, Gabriele Malaspina, Creative Stall, Aha-Soft

https://github.com/ghillert/ajug-spring-update

@ghillert @royclarkson@cppwfs

@springcentral