Springboot Study: (a) Quick build project

Source: Internet
Author: User

First, Introduction

As you can see from boot in the Spring boot project name, spring boot works by creating and starting a new spring framework-based project. It is designed to help developers easily create Spring-based frameworks for standalone runs and product-level applications. Spring Boot selects the most appropriate spring sub-project and third-party open source libraries for consolidation. Most Spring Boot applications require very little configuration to run quickly.

Spring Boot contains the following features:

    • Create a Spring app that can run independently.

    • Embed a Tomcat or Jetty server directly without the need to deploy a WAR file.

    • Provides a recommended base POM file to simplify the Apache Maven configuration.

    • Automatically configure the Spring framework based on project dependencies as much as possible.

    • Provides features that can be used directly in a production environment, such as performance metrics, application information, and application health checks.

    • There is no code generation, and there is no XML configuration file.

Second, Maven Pom file

Build projects faster with Maven.

<?xml version= "1.0"  encoding= "UTF-8"? ><project xmlns= "http://maven.apache.org/POM/ 4.0.0 " xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance " xsi:schemalocation="/HTTP/ Maven.apache.org/pom/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd "><modelVersion>4.0.0</ modelversion><groupid>com.midgetontoes</groupid><artifactid>spring-boot-simple</ Artifactid><version>1.0-snapshot</version><properties> <spring.boot.version> 1.1.4.release</spring.boot.version></properties><dependencies> <dependency>  <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-web</ artifactid> <version>${spring.boot.version}</version> </dependency></ Dependencies><build> <plugins> <plugin> <groupid> Org.springframework.boot</groupid> <artifactid>spring-boot-maven-plugin</artifactid><version>${spring.boot.version}</version> < executions> <execution> <goals> <goal>repackage</goal> </ goals> </execution> </executions> </plugin> </plugins></ Build></project>

Third, Java code

@RestController @enableautoconfigurationpublic class Application {@RequestMapping ("/") String Home () {return "Hello World! ";} public static void Main (string[] args) throws Exception {Springapplication.run (application.class, args);}}

java class application is a simple Web application that can run independently. Running the Java class directly will start an inline Tomcat server running on port 8080. Visit "http://localhost:8080" to see "Hello world!" displayed on the page. That means you can launch a standalone Web app with just 2 files. There is no need to install an application server such as Tomcat or to package it as a WAR file. You can start the app on the command line with "MVN Spring-boot:run". The "Org.springframework.boot:spring-boot-maven-plugin" plugin was added to the POM file in code listing 1 . After the plugin is added, when the MVN package is run, it is packaged as a JAR file that can be run directly, and can be run directly using the "Java-jar" command. This simplifies the deployment of the application to a great extent, and only installs the JRE to run it.

The purpose of the @EnableAutoConfiguration annotation is to have spring Boot automatically configure the spring framework based on the dependencies declared by the application, which reduces the developer's workload. The annotations "@RestController" and "@RequestMapping" are provided by Spring MVC to create a REST service. These two annotations are not related to Spring Boot itself.

Four, start

Run the main method directly.

V. References

    1. Quickly build a spring framework app with spring Boot


Springboot Study: (a) Quick build project

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