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Spring Boot Build Status Chat

Spring Boot makes it easy to create Spring-powered, production-grade applications and services with absolute minimum fuss. It takes an opinionated view of the Spring platform so that new and existing users can quickly get to the bits they need.

You can use Spring Boot to create stand-alone Java applications that can be started using java -jar or more traditional WAR deployments. We also provide a command line tool that runs spring scripts.

Our primary goals are:

  • Provide a radically faster and widely accessible getting started experience for all Spring development

  • Be opinionated out of the box, but get out of the way quickly as requirements start to diverge from the defaults

  • Provide a range of non-functional features that are common to large classes of projects (e.g. embedded servers, security, metrics, health checks, externalized configuration)

  • Absolutely no code generation and no requirement for XML configuration

Installation and Getting Started

The reference documentation includes detailed installation instructions as well as a comprehensive getting started guide.

Here is a quick teaser of a complete Spring Boot application in Java:

import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.*;
import org.springframework.web.bind.annotation.*;

@RestController
@SpringBootApplication
public class Example {

	@RequestMapping("/")
	String home() {
		return "Hello World!";
	}

	public static void main(String[] args) {
		SpringApplication.run(Example.class, args);
	}

}

Getting help

Having trouble with Spring Boot? We’d like to help!

Reporting Issues

Spring Boot uses GitHub’s integrated issue tracking system to record bugs and feature requests. If you want to raise an issue, please follow the recommendations below:

  • Before you log a bug, please search the issue tracker to see if someone has already reported the problem.

  • If the issue doesn’t already exist, create a new issue.

  • Please provide as much information as possible with the issue report, we like to know the version of Spring Boot that you are using, as well as your Operating System and JVM version.

  • If you need to paste code, or include a stack trace use Markdown ``` escapes before and after your text.

  • If possible try to create a test-case or project that replicates the issue. You can submit sample projects as pull-requests against the spring-boot-issues GitHub project. Use the issue number for the name of your project.

Building from Source

You don’t need to build from source to use Spring Boot (binaries in repo.spring.io), but if you want to try out the latest and greatest, Spring Boot can be easily built with the maven wrapper. You also need JDK 1.8.

$ ./mvnw clean install

If you want to build with the regular mvn command, you will need Maven v3.5.0 or above.

Note
 You may need to increase the amount of memory available to Maven by setting a MAVEN_OPTS environment variable with the value -Xmx512m. Remember to set the corresponding property in your IDE as well if you are building and running tests there (e.g. in Eclipse go to Preferences→Java→Installed JREs and edit the JRE definition so that all processes are launched with those arguments). This property is automatically set if you use the maven wrapper.

Also see CONTRIBUTING.adoc if you wish to submit pull requests, and in particular please fill out the Contributor’s Agreement before your first change, however trivial.

Building reference documentation

First of all, make sure you have built the project:

$ ./mvnw clean install

The reference documentation requires the documentation of the Maven plugin to be available so you need to build that first since it’s not generated by default.

$ ./mvnw clean install -pl spring-boot-project/