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official document:http://projects.spring.io/spring-boot/
项目代码:
SpringMVC是非常伟大的框架,开源,发展迅速。优秀的设计必然会划分、解耦。所以,spring有很多子项目,比如core、context、bean、mvc等。这对知根底的人来说很简单明了,然而springmvc就是为了傻瓜式的操作而发明的。对于初学springmvc的人来说,想要入手就开发需要拷贝一连串的dependency而不知道这个是干嘛,不知道是不是少了依赖。像我刚接触springmvc的时候到处百度教程而发现各有不同,于是复制了一个又一个代码却不能自己设置,根本原因是不了解各个依赖的包。
Spring-Boot 正是为了解决繁复的代码配置而产生的。Spring-Boot 也是基于java-base 开发的代码,及不用xml文件配置,所有代码都由java来完成。还可以加入Groovy的动态语言执行。
本文只是Springboot的初始化用法,更多详情,参阅
在idea中,选择new-》maven创建一个空的maven项目,比如名字springboot-test。
设定java版本:
1.8
添加依赖版本管理dependencyManagement
org.springframework.boot spring-boot-dependencies 1.3.5.RELEASE pom import
添加spring-web项目依赖
org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-devtools true
添加build-plugin
org.springframework.boot spring-boot-maven-plugin true
如此,一个简单的restful的webservice的项目就搭建好了。如果想要支持视图渲染,即jsp、freeMark、velocity等,添加对应的依赖即可。比如,我使用Thymeleaf模板:
org.springframework.boot spring-boot-starter-thymeleaf
如果新建项目的名字是:springboot-test. 则创建包springboot-test/src/main/java/com/test.
com +- example +- myproject +- Application.java | +- domain | +- Customer.java | +- CustomerRepository.java | +- service | +- CustomerService.java | +- web +- CustomerController.java
com.test是我们的基本包名。下面创建配置类com.test.AppConfig。
package com.test;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;/** * Created by miaorf on 2016/6/19. */@SpringBootApplicationpublic class AppConfig { public static void main(String[] args) { SpringApplication.run(AppConfig.class); }}
@SpringBootApplication 标注启动配置入口,可以发现通过一个main方法启动。使用这个注解的类必须放置于最外层包中,因为默认扫描这个类以下的包。否则需要自己配置@ComponentScan。
这样,配置基本完成了。下面开发控制层controller:
创建com.test.controller.HelloController。
package com.test.controller;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import java.util.HashMap;import java.util.Map;/** * Created by miaorf on 2016/6/19. */@Controllerpublic class HelloController { @RequestMapping("/index") public String index(Model model){ model.addAttribute("name","Ryan"); return "index"; } @RequestMapping("/json") @ResponseBody public Mapjson(){ Map map = new HashMap (); map.put("name","Ryan"); map.put("age","18"); map.put("sex","man"); return map; }}
创建视图代码:
视图默认放在springboot-test\src\main\resources\templates**.
所以创建springboot-test\src\main\resources\templates\index.html
Getting Started: Serving Web Content
D:\workspace\springboot\springboot-test\src\main\webapp\hello.html
Getting Started: Serving Web Content hello, This is static page. not resolve by server, just the html.
启动方式多种,可以启动main方法,也可以通过命令行启动:
D:\temp\springboot-test>mvn spring-boot:run[INFO] Scanning for projects...[WARNING][WARNING] Some problems were encountered while building the effective model for com.test:springboot-test:jar:1.0-SNAPSHOT[WARNING] 'build.plugins.plugin.version' for org.springframework.boot:spring-boot-maven-plugin is missing. @ line 49, column 21[WARNING][WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.[WARNING][WARNING] For this reason, future Maven versions might no longer support building such malformed projects.[WARNING][INFO][INFO] ------------------------------------------------------------------------[INFO] Building springboot-test 1.0-SNAPSHOT[INFO] ------------------------------------------------------------------------[INFO][INFO] >>> spring-boot-maven-plugin:1.3.5.RELEASE:run (default-cli) > test-compile @ springboot-test >>>[INFO][INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ springboot-test ---[WARNING] Using platform encoding (GBK actually) to copy filtered resources, i.e. build is platform dependent![INFO] Copying 2 resources[INFO][INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ springboot-test ---[INFO] Nothing to compile - all classes are up to date[INFO][INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ springboot-test ---[WARNING] Using platform encoding (GBK actually) to copy filtered resources, i.e. build is platform dependent![INFO] skip non existing resourceDirectory D:\temp\springboot-test\src\test\resources[INFO][INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ springboot-test ---[INFO] No sources to compile[INFO][INFO] <<< spring-boot-maven-plugin:1.3.5.RELEASE:run (default-cli) < test-compile @ springboot-test <<<[INFO][INFO] --- spring-boot-maven-plugin:1.3.5.RELEASE:run (default-cli) @ springboot-test ---[INFO] Attaching agents: [] . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v1.3.5.RELEASE)
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