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我们的理念是用极简的招数，打败绝顶"高手"。
<h5> Step1. 新建gradle，kotlin工程：
<h5>Step2. 配置build.gradle
group 'com.jason.chen.mini_springboot'version '1.0-SNAPSHOT'buildscript { ext.kotlin_version = '1.1.0' repositories { mavenCentral() } dependencies { classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" }}apply plugin: 'kotlin'apply plugin: 'application'mainClassName = 'jason.chen.mini_springboot.HelloWorldKt'defaultTasks 'run'repositories { mavenCentral()}dependencies { compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"} <h5>Step3.写HelloWorld Kotlin class
package jason.chen.mini_springboot/** * Created by jack on 2017/3/11. * @author jack * @date 2017/03/11 */fun helloWorld():String { val words = mutableListOf () words.add("Hello") words.add("World!") return words.joinToString(separator=" ")}fun main(args: Array ){ println(helloWorld())} <h5>Step4. Run
源码：
<h5>Step1.配置build.gradle
version = "0.0.1-SNAPSHOT"buildscript { ext{ springBootVersion = "1.5.2.RELEASE" kotlinVersion = "1.1.0" } repositories { mavenCentral() } dependencies { classpath("org.springframework.boot:spring-boot-gradle-plugin:$springBootVersion") classpath("org.jetbrains.kotlin:kotlin-noarg:$kotlinVersion") classpath("org.jetbrains.kotlin:kotlin-allopen:$kotlinVersion") classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion") }}apply { plugin("kotlin") plugin("kotlin-spring") plugin("kotlin-jpa") plugin("org.springframework.boot") plugin 'java' plugin 'eclipse' plugin 'idea'// plugin: 'spring-boot'}repositories { mavenCentral()}jar { baseName = 'mini_springboot' version = '0.0.1'}sourceCompatibility = 1.8targetCompatibility = 1.8dependencies { compile("org.springframework.boot:spring-boot-starter-data-jpa")// compile("com.h2database:h2") compile("org.jetbrains.kotlin:kotlin-stdlib:$kotlinVersion") compile("org.jetbrains.kotlin:kotlin-reflect:$kotlinVersion") compile("com.fasterxml.jackson.module:jackson-module-kotlin:2.8.4") testCompile("org.springframework.boot:spring-boot-starter-test") compile("org.springframework.boot:spring-boot-starter-web") { exclude module: "spring-boot-starter-tomcat" } compile("org.springframework.boot:spring-boot-starter-jetty") compile("org.springframework.boot:spring-boot-starter-actuator") compile('mysql:mysql-connector-java:5.1.13') testCompile("junit:junit")} <h5>Step2. 配置application.properties
spring.datasource.url = jdbc:mysql://localhost:3306/mini_springbootspring.datasource.username = rootspring.datasource.password = root#spring.datasource.driverClassName = com.mysql.jdbc.Driver# Specify the DBMSspring.jpa.database = MYSQL# Keep the connection alive if idle for a long time (needed in production)spring.datasource.testWhileIdle = truespring.datasource.validationQuery = SELECT 1# Show or not log for each sql queryspring.jpa.show-sql = true# Hibernate ddl auto (create, create-drop, update)spring.jpa.hibernate.ddl-auto = update# Naming strategyspring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy# Use spring.jpa.properties.* for Hibernate native properties (the prefix is# stripped before adding them to the entity manager)# The SQL dialect makes Hibernate generate better SQL for the chosen databasespring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialectserver.port=9891
<h5>Step3.工程架构
记住，就连UNIX这样的操作系统，“一切都是文件”。so, 你的所有的代码，工程，一切都是文件。
目录
.├── README_.md├── build│ ├── classes│ │ └── main│ │ ├── META-INF│ │ │ └── mini_springboot_main.kotlin_module│ │ └── jason│ │ └── chen│ │ └── mini_springboot│ │ ├── console│ │ │ └── HelloWorldKt.class│ │ ├── rest│ │ │ ├── biz│ │ │ ├── controller│ │ │ └── entity│ │ └── restful│ │ ├── Application$init$1.class│ │ ├── Application.class│ │ ├── ApplicationKt.class│ │ ├── biz│ │ │ └── CustomerRepository.class│ │ ├── controller│ │ │ └── CustomerController.class│ │ ├── entity│ │ │ └── Customer.class│ │ └── utils│ │ ├── DateOperator.class│ │ ├── DateOptUnit$WhenMappings.class│ │ ├── DateOptUnit.class│ │ └── DateUtilsKt.class│ ├── kotlin│ │ ├── compileKotlin│ │ │ └── sync│ │ │ └── kotlin-files-in-java-timestamps.bin│ │ └── daemon-is-alive│ ├── kotlin-build│ │ └── caches│ │ └── version.txt│ ├── kotlin-classes│ │ └── main│ │ ├── META-INF│ │ │ └── mini_springboot_main.kotlin_module│ │ └── jason│ │ └── chen│ │ └── mini_springboot│ │ ├── console│ │ │ └── HelloWorldKt.class│ │ └── restful│ │ ├── Application$init$1.class│ │ ├── Application.class│ │ ├── ApplicationKt.class│ │ ├── biz│ │ │ └── CustomerRepository.class│ │ ├── controller│ │ │ └── CustomerController.class│ │ ├── entity│ │ │ └── Customer.class│ │ └── utils│ │ ├── DateOperator.class│ │ ├── DateOptUnit$WhenMappings.class│ │ ├── DateOptUnit.class│ │ └── DateUtilsKt.class│ └── resources│ └── main│ ├── application.properties│ └── application.yml├── build.gradle├── gradle│ └── wrapper│ ├── gradle-wrapper.jar│ └── gradle-wrapper.properties├── gradlew├── gradlew.bat├── run.bat├── run.sh├── settings.gradle└── src ├── main │ ├── java │ ├── kotlin │ │ └── jason │ │ └── chen │ │ └── mini_springboot │ │ ├── console │ │ │ └── HelloWorld.kt │ │ └── restful │ │ ├── Application.kt │ │ ├── biz │ │ │ └── CustomerRepository.kt │ │ ├── controller │ │ │ └── CustomerController.kt │ │ ├── entity │ │ │ └── Customer.kt │ │ └── utils │ │ └── DateUtils.kt │ └── resources │ ├── application.properties │ └── application.yml └── test ├── java ├── kotlin └── resources56 directories, 46 files
一切尽在不言中，静静地看工程文件结构。
<h4>Step4.测试
请求：http://127.0.0.1:9891
响应：curl http://127.0.0.1:9891[{"firstName":"Jason","lastName":"Chen","gmtCreated":null,"gmtModified":null,"deletedDate":null,"id":1},{"firstName":"Bluce","lastName":"Li","gmtCreated":null,"gmtModified":null,"deletedDate":null,"id":2},{"firstName":"Michelle","lastName":"Chen","gmtCreated":null,"gmtModified":null,"deletedDate":null,"id":3},{"firstName":"Jason","lastName":"Chen","gmtCreated":1489214640000,"gmtModified":1489214640000,"deletedDate":1489214640000,"id":4},{"firstName":"Bluce","lastName":"Li","gmtCreated":1489214640000,"gmtModified":1489214640000,"deletedDate":1489214640000,"id":5},{"firstName":"Michelle","lastName":"Chen","gmtCreated":1489214640000,"gmtModified":1489214640000,"deletedDate":1489214640000,"id":6}]curl http://127.0.0.1:9891/Chen[{"firstName":"Jason","lastName":"Chen","gmtCreated":null,"gmtModified":null,"deletedDate":null,"id":1},{"firstName":"Michelle","lastName":"Chen","gmtCreated":null,"gmtModified":null,"deletedDate":null,"id":3},{"firstName":"Jason","lastName":"Chen","gmtCreated":1489214640000,"gmtModified":1489214640000,"deletedDate":1489214640000,"id":4},{"firstName":"Michelle","lastName":"Chen","gmtCreated":1489214640000,"gmtModified":1489214640000,"deletedDate":1489214640000,"id":6}] 源代码：
访问， , 你将进入丰富多彩的Spring世界：
OK,言归正传，我们开篇第一回，Hello,World
在中生成项目骨架：
GroupId: com.light.sword.mini_springbootArtifact: mini_springboot
生成工程mini_springboot.
工程目录如下：
.├── build.gradle├── gradle│ └── wrapper│ ├── gradle-wrapper.jar│ └── gradle-wrapper.properties├── gradlew├── gradlew.bat└── src ├── main │ ├── java │ │ └── com │ │ └── light │ │ └── sword │ │ └── mini_springboot │ │ └── MiniSpringbootApplication.java │ └── resources │ └── application.properties └── test └── java └── com └── light └── sword └── mini_springboot └── MiniSpringbootApplicationTests.java16 directories, 8 files
参考示例工程：
参考文章：
Developing Spring Boot applications with Kotlin：
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