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This article focuses on "what are the characteristics of Spring Boot2", interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "what are the features of Spring Boot2"?

Advantages of Spring Boot

Using the Spring project guide page, you can build a project in seconds.

Facilitate the export of various forms of services, such as RESTAPI, WebSocket, Web, Streaming, Tasks

Very concise security policy integration

Support for relational and non-relational databases

Support runtime embedded containers, such as Tomcat, Jetty

Powerful development package that supports hot startup

Automatically manage dependencies

Built-in application monitoring

Support all kinds of IDE, such as IntelliJ IDEA, NetBeans, Eclipse, etc.

Spring 5

Spring5 is an important version, almost four years since SpringFramework4. During this period, most of the enhancements were done in the SpringBoot project.

Some exciting features in the Spring5 distribution.

Benchmark upgrade

To build and run Spring5 applications, you need at least J2EE7 and JDK8. Previous versions of JDK and JavaEE are no longer supported. JavaEE7 contains:

Servlet 3.1

JMS 2.0

JPA 2.1

JAX-RS 2.0

Bean Validation 1.1

Similar to the Java benchmark, the benchmarks of many other frameworks have changed. For example:

Hibernate 5

Jackson 2.6

EhCache 2.10

JUnit 5

Tiles 3

In addition, make a note of the minimum supported versions of the various servers.

Tomcat 8.5 +

Jetty 9.4 +

WildFly 10 +

Netty 4.1 +

Undertow 1.4 +

Compatible with JDK9 runtime

The Spring5 release is very close to the JDK9 release date. The goal is to get Spring Framework5 to run correctly after JDK9's GA. Candidate versions of the Spring5 version already support Java9 on classpath and modulepath.

You can expect good JDK9 support in the GA version.

Use the JDK8 feature

Before Spring4.3, the base version of JDK was 6. So Spring4 must support Java6,7 and 8, and in order to maintain backward compatibility, the Spring framework does not adapt to many new features brought about by Java8, such as lambda expressions.

The base version of Spring5 is 8, so it uses many new features of Java8 and 9. For example:

Default method in the Spring interface

Internal Code improvement based on Java8 reflection Enhancement

Use functional programming-lambda expressions and stream streams-in the framework code.

Responsive programming support

Responsive programming is one of the most important features of SpringFramework5.0. Responsive programming provides another programming style that focuses on building applications that respond to events. SpringFramework5 contains response streams (language-neutral attempts to define responsive API) and Reactor (Java implementation of Reactive Stream provided by the Spring Pivotal team) for its own use and many of its core API.

Spring Web Reactive is in the new spring-web-reactive module next to the existing (and popular) Spring Web MVC in the spring-webmvc module. Note that in Spring5, traditional SpringMVC supports servers running on Servlet3.1 or JavaEE7.

Functional web framework

In addition to responsive functionality, Spring5 provides a functional Web framework. It provides the ability to define endpoints using a functional programming style. The framework introduces two basic components: HandlerFunction and RouterFunction.

HandlerFunction represents a function that processes a received request and generates a response. RouterFunction replaces the @ RequestMapping annotation. It is used to route received requests to the handler. For example:

RouterFunction route = route (GET ("/ hello-world"), request-> Response.ok () .body (fromObject ("Hello World")

Kotlin support

Kotlin is a statically typed JVM language that makes code expressive, concise, and readable. Spring5.0 has good support for Kotlin.

Removed properti

With the addition of Java, JavaEE, and other benchmark versions of frameworks, SpringFramework5 has removed support for several frameworks. For example:

Portlet

Velocity

JasperReports

XMLBeans

JDO

Guava

Spring Boot 2

First of all, look at the changes from the picture:

The most obvious is the Reactor model. In other words, the whole is shifting to responsive programming.

At this point, I believe you have a deeper understanding of "what are the characteristics of Spring Boot2?" you might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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