Spring boot入门一环境搭建HelloWorld-白红宇

Spring boot入门一环境搭建HelloWorld

阅读量：6006 次

发布时间：2019-06-20

本文共 6741 字，大约阅读时间需要 22 分钟。

说在前面：

最近Spring boot也火了一把，不稍微熟习下Spring boot都不好意思出门了，于是我也试着看下Spring boot的相关配置。

概述：

Spring Boot是由Pivotal团队提供的全新框架，其设计目的是用来简化新Spring应用的初始搭建以及开发过程。该框架使用了特定的方式来进行配置，从而使开发人员不再需要定义样板化的配置。一句话概括，“spring boot它就是一些人为了快速配置一套系统框架而进行的封装，里面根据各种类型的项目功能封装了各种模块框架的引用，广大老百姓在使用的时候就不需要一一的去添加具体非常细的引用了，只需要添加他们封装好的spring boot相关模块插件即可”。spring boot其实不是什么新的框架，就如同一个盒子，盒子里面装了很多的细致的jar，我们只要引用这个盒子就可以实现各种框架引用与搭建了！

配置工具：

1、JDK1.7

2、Maven(也可以使用非maven工具搭建)

3、IDE(Eclipse、IntelliJ 或者其它的)

代码配置：

1、新建一个maven项目，可以是web工程也可以是java基本工程

2、pom.xml中配置

[html]

<parent>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-parent</artifactId>

<version>1.4.0.RELEASE</version>

</parent>

<dependencies>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-web</artifactId>

</dependency>

</dependencies>

3、新建个java类

[html]

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.ResponseBody;

@EnableAutoConfiguration

public class SampleController {

@RequestMapping("/")

@ResponseBody

String home() {

return "Hello World!";

}

public static void main(String[] args) throws Exception {

SpringApplication.run(SampleController.class, args);

}

}

好了以上配置完成，已经完成了spring boot最最简单的配置，

运行该main方法

[html]

. ____ _ __ _ _

/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \

( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \

\\/ ___)| |_)| | | | | || (_| | ) ) ) )

' |____| .__|_| |_|_| |_\__, | / / / /

=========|_|==============|___/=/_/_/_/

:: Spring Boot :: (v1.4.0.RELEASE)

2017-08-30 16:05:10.511 INFO 5180 --- [ main] c.s.project.controller.SampleController : Starting SampleController on lenovo2017 with PID 5180 (E:\Eclipse4_WorkPlace\spring_boot\spring_boot_first\target\classes started by lenovo in E:\Eclipse4_WorkPlace\spring_boot\spring_boot_first)

2017-08-30 16:05:10.512 INFO 5180 --- [ main] c.s.project.controller.SampleController : No active profile set, falling back to default profiles: default

2017-08-30 16:05:10.540 INFO 5180 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@1b4e829: startup date [Wed Aug 30 16:05:10 CST 2017]; root of context hierarchy

2017-08-30 16:05:11.371 INFO 5180 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)

2017-08-30 16:05:11.378 INFO 5180 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat

2017-08-30 16:05:11.379 INFO 5180 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.4

2017-08-30 16:05:11.441 INFO 5180 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/aaa] : Initializing Spring embedded WebApplicationContext

2017-08-30 16:05:11.441 INFO 5180 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 902 ms

2017-08-30 16:05:11.554 INFO 5180 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]

2017-08-30 16:05:11.557 INFO 5180 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]

2017-08-30 16:05:11.557 INFO 5180 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]

2017-08-30 16:05:11.558 INFO 5180 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]

2017-08-30 16:05:11.558 INFO 5180 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]

2017-08-30 16:05:12.066 INFO 5180 --- [ost-startStop-1] o.a.c.util.SessionIdGeneratorBase : Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [495] milliseconds.

2017-08-30 16:05:12.301 INFO 5180 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@1b4e829: startup date [Wed Aug 30 16:05:10 CST 2017]; root of context hierarchy

2017-08-30 16:05:12.346 INFO 5180 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/]}" onto java.lang.String com.sam.project.controller.SampleController.home()

2017-08-30 16:05:12.351 INFO 5180 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)

2017-08-30 16:05:12.352 INFO 5180 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)

2017-08-30 16:05:12.370 INFO 5180 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]

2017-08-30 16:05:12.370 INFO 5180 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]

2017-08-30 16:05:12.397 INFO 5180 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]

2017-08-30 16:05:12.486 INFO 5180 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup

2017-08-30 16:05:12.530 INFO 5180 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)

2017-08-30 16:05:12.532 INFO 5180 --- [ main] c.s.project.controller.SampleController : Started SampleController in 2.398 seconds (JVM running for 2.642)