Spring Boot 快速入门

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.

Spring Boot主要优点：

创建独立的Spring应用程序 嵌入的Tomcat，无需部署WAR文件 简化Maven配置 自动配置Spring 提供生产就绪型功能，如指标，健康检查和外部配置 无需编写繁琐的XML配置

快速创建Spring Boot项目

访问：http://start.spring.io/ 选择构建工具Maven Project、Spring Boot版本1.5.4以及一些工程基本信息
点击Generate Project下载项目压缩包 解压项目包，并用IDE以Maven项目导入
项目结构
pom.xml

 ![CDATA[

 ?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.example /groupId 

 artifactId spring-boot-sample /artifactId 

 version 0.0.1-SNAPSHOT /version 

 packaging jar /packaging 

 name spring-boot-sample /name 

 description Demo project for Spring Boot /description 

 parent 

 groupId org.springframework.boot /groupId 

 artifactId spring-boot-starter-parent /artifactId 

 version 1.5.4.RELEASE /version 

 relativePath/ !-- lookup parent from repository -- 

 /parent 

 properties 

 project.build.sourceEncoding UTF-8 /project.build.sourceEncoding 

 project.reporting.outputEncoding UTF-8 /project.reporting.outputEncoding 

 java.version 1.8 /java.version 

 /properties 

 dependencies 

 !--核心模块，包括自动配置支持、日志和YAML-- 

 dependency 

 groupId org.springframework.boot /groupId 

 artifactId spring-boot-starter-web /artifactId 

 /dependency 

 !--热启动-- 

 dependency 

 groupId org.springframework.boot /groupId 

 artifactId spring-boot-devtools /artifactId 

 scope runtime /scope 

 /dependency 

 !--测试模块，包括JUnit、Hamcrest、Mockito-- 

 dependency 

 groupId org.springframework.boot /groupId 

 artifactId spring-boot-starter-test /artifactId 

 scope test /scope 

 /dependency 

 /dependencies 

 build 

 plugins 

 plugin 

 groupId org.springframework.boot /groupId 

 artifactId spring-boot-maven-plugin /artifactId 

 /plugin 

 /plugins 

 /build 

 !-- 设定Maven仓库 -- 

 repositories 

 repository 

 id maven-aliyun /id 

 name maven-aliyun /name 

 url http://maven.aliyun.com/nexus/content/groups/public /url 

 /repository 

 /repositories 

 !-- 设定plugin仓库 -- 

 pluginRepositories 

 pluginRepository 

 id maven-aliyun /id 

 name maven-aliyun /name 

 url http://maven.aliyun.com/nexus/content/groups/public /url 

 /pluginRepository 

 /pluginRepositories 

 /project 

]] 

SpringBootSampleApplication.java

@SpringBootApplication

public class SpringBootSampleApplication {

 public static void main(String[] args) {

 SpringApplication.run(SpringBootSampleApplication.class, args);

}

SampleController.java

class SampleController {

@RequestMapping(value = "/hello")

String hello() {

return "hello world！";

}

}

SpringBootSampleApplicationTests

@RunWith(SpringRunner.class)

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)

@AutoConfigureMockMvc

public class SpringBootSampleApplicationTests {

 @Autowired

 private MockMvc mvc;

 @Test

 public void contextLoads() {

 try{

 URI uri = new URI("/hello");

 MvcResult mvcResult = mvc.perform(MockMvcRequestBuilders.get(uri).accept(MediaType.APPLICATION_JSON))

 .andReturn();

 String context = mvcResult.getResponse().getContentAsString();

 System.out.println(context);

 }catch (Exception e){

 e.printStackTrace();

}

application.properties

server.port=8000 #指定程序运行端口

大功告成！！！运行SpringBootSampleApplication的main方法SpringBoot即可启动起来~
浏览器访问http://localhost:8000/hello

运行测试类

欢迎支持



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