一、简介
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。
二、搭建一个基本的web-mvc 项目
2.1 Configure environment
- java 1.8+
- maven 3.3+
- spring-boot 1.3.5
- idea 15
- Thymeleaf 3
2.2 Start
在idea中,选择new-》maven创建一个空的maven项目,比如名字springboot-test。
2.2.1pom.xml
设定java版本:
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< properties > < java.version >1.8</ java.version > </ properties > |
添加依赖版本管理dependencyManagement
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< dependencyManagement > < dependencies > < dependency > <!-- Import dependency management from Spring Boot --> < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-dependencies</ artifactId > < version >1.3.5.RELEASE</ version > < type >pom</ type > < scope >import</ scope > </ dependency > </ dependencies > </ dependencyManagement > |
添加spring-web项目依赖
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< dependencies > < dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-web</ artifactId > </ dependency > < dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-devtools</ artifactId > < optional >true</ optional > </ dependency > </ dependencies > |
添加build-plugin
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< build > < plugins > < plugin > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-maven-plugin</ artifactId > < configuration > < fork >true</ fork > </ configuration > </ plugin > </ plugins > </ build > |
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:
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< dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-thymeleaf</ artifactId > </ dependency > |
2.2.2 创建java代码
如果新建项目的名字是:springboot-test. 则创建包springboot-test/src/main/java/com/test.
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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;
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import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; /** * Created by miaorf on 2016/6/19. */ @SpringBootApplication public 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。
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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. */ @Controller public class HelloController { @RequestMapping ( "/index" ) public String index(Model model){ model.addAttribute( "name" , "Ryan" ); return "index" ; } @RequestMapping ( "/json" ) @ResponseBody public Map<String,Object> json(){ Map<String,Object> map = new HashMap<String,Object>(); 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
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<!DOCTYPE HTML> < html xmlns:th = "http://www.thymeleaf.org" > < head > < title >Getting Started: Serving Web Content</ title > < meta http-equiv = "Content-Type" content = "text/html; charset=UTF-8" /> </ head > < body > < p th:text = "'Hello, ' + ${name} + '!'" /> </ body > </ html > |
D:\workspace\springboot\springboot-test\src\main\webapp\hello.html
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<!DOCTYPE HTML> < html > < head > < title >Getting Started: Serving Web Content</ title > < meta http-equiv = "Content-Type" content = "text/html; charset=UTF-8" /> </ head > < body > hello, This is static page. not resolve by server, just the html. </ body > </ html > |
2.2.3 run
启动方式多种,可以启动main方法,也可以通过命令行启动:
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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) |
浏览器访问:localhost:8080/index
demo下载路径:springboot.rar
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://www.cnblogs.com/woshimrf/p/5602051.html