以前的项目都采用xml的配置方式，而spring boot使用的是java config，在配置上有很大的区别。

一、pom.xml 

<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>  	<parent> 		<groupId>cn.anhur.cas</groupId> 		<artifactId>anhur-cas</artifactId> 		<version>1.0.0-SNAPSHOT</version> 	</parent>  	<artifactId>anhur-cas-ucenter-webapp</artifactId> 	<packaging>war</packaging>  	<name>anhur-cas-ucenter-webapp</name> 	<description>Anhur CAS user center Web application.</description>  	<properties> 		<framework.version>1.0.0-SNAPSHOT</framework.version> 	</properties>  	<build> 		<finalName>ucenter</finalName>  		<plugins> 			<plugin> 				<artifactId>maven-war-plugin</artifactId>  				<configuration> 					<failOnMissingWebXml>false</failOnMissingWebXml> 				</configuration> 			</plugin>  			<plugin> 				<groupId>org.apache.tomcat.maven</groupId> 				<artifactId>tomcat7-maven-plugin</artifactId> 				<configuration> 					<server>tomcat</server> 					<url>http://www.anhur.cn:8082/manager/text</url> 					<path>/${project.build.finalName}</path> 				</configuration> 				<executions> 					<execution> 						<phase>deploy</phase> 						<goals> 							<goal>redeploy</goal> 						</goals> 					</execution> 				</executions> 			</plugin>  			<plugin> 				<groupId>org.springframework.boot</groupId> 				<artifactId>spring-boot-maven-plugin</artifactId> 				<executions> 					<execution> 						<goals> 							<goal>repackage</goal> 						</goals> 					</execution> 				</executions> 			</plugin> 		</plugins> 	</build>  	<dependencyManagement> 		<dependencies> 			<dependency> 				<groupId>cn.anhur.framework</groupId> 				<artifactId>anhur-framework</artifactId> 				<version>${framework.version}</version> 				<type>pom</type> 				<scope>import</scope> 			</dependency> 		</dependencies> 	</dependencyManagement>  	<dependencies> 		<dependency> 			<groupId>org.springframework.boot</groupId> 			<artifactId>spring-boot-starter-thymeleaf</artifactId> 		</dependency>  		<dependency> 			<groupId>org.springframework.boot</groupId> 			<artifactId>spring-boot-starter-tomcat</artifactId> 			<scope>provided</scope> 		</dependency>  		<dependency> 			<groupId>mysql</groupId> 			<artifactId>mysql-connector-java</artifactId> 			<scope>runtime</scope> 		</dependency>  		<dependency> 			<groupId>cn.anhur.framework</groupId> 			<artifactId>anhur-framework-core</artifactId> 			<version>${framework.version}</version> 		</dependency> 	</dependencies>  </project> 

• <packaging>war</packaging>原有的项目采用的是自动化打包成war部署，不想打破配置，依然采用war的方式部署，不过个人觉得，使用jar的方式会好点。
• <failOnMissingWebXml>false</failOnMissingWebXml>spring boot的web工程是没有web.xml的，如果使用了war的打包方式会打包失败，这配置忽略了这一错误。
• <artifactId>tomcat7-maven-plugin</artifactId>自动化部署插件。
• <artifactId>spring-boot-maven-plugin</artifactId>加入spring boot插件
• <artifactId>spring-boot-starter-thymeleaf</artifactId>视图所需依赖，th模板最大的好处是使用了替换的方式填充模型，在html5下可以做到原型即模板。
• <artifactId>spring-boot-starter-tomcat</artifactId>由于使用了tomcat作为运行环境，那么spring boot里依赖的tomcat就不需要打包了。

二、创建程序入口

@SpringBootApplication @EnableAutoConfiguration public class AccountApplication {  	public static void main(String[] args) { 		SpringApplication.run(AccountApplication.class, args); 	}  } 

• @SpringBootApplication 
• @EnableAutoConfiguration  启用自动配置

public class ServletInitializer extends SpringBootServletInitializer {  	@Override 	protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) { 		return builder.sources(AccountApplication.class); 	}  } 

使用了外置的tomcat，由于没有web.xml，tomcat无从下手，需要告诉容器怎么启动。

三、数据库等配置

spring.datasource.url=jdbc:mysql://localhost:3306/cas spring.datasource.username=root spring.datasource.password=123456 spring.datasource.driver-class-name=com.mysql.jdbc.Driver  spring.jpa.show-sql=true spring.jpa.hibernate.ddl-auto=update  #spring.http.encoding.charset=UTF-8 #spring.http.encoding.enable=true spring.http.encoding.force=true  spring.resources.chain.strategy.content.enabled=true spring.resources.chain.strategy.content.paths=/** 

四、第一个http请求

@Controller @RequestMapping("/user") public class UserController {  	@Autowired 	@Qualifier("userService") 	private UserService userService;  	@RequestMapping(value = "/", method = RequestMethod.GET) 	public String index(Model model) { 		model.addAttribute("title", "用户管理"); 		model.addAttribute("h", "陶远平"); 		return "user/index"; 	}  	@ResponseBody 	@RequestMapping(value = "/list", method = RequestMethod.GET) 	public List<User> list() { 		return userService.list(); 	}  } 

@Service("userService") public class UserServiceImpl extends BaseServiceImpl<User, Long> implements UserService {  	private UserRepository userRepository;  	@Autowired 	public void setUserRepository(UserRepository userRepository) { 		this.userRepository = userRepository; 		setBaseRepository(userRepository); 	}  	@Override 	public List<User> list() { 		return userRepository.findAll(); 	}  } 

public interface UserRepository extends BaseRepository<User, Long> {  } 

使用spring data jpa，可以简单建立数据库操作。

<!DOCTYPE html> <html xmlns:th="http://www.thymeleaf.org"> <head> <meta charset="UTF-8" /> <title th:text="${title}">原型标题</title> <script type="text/javascript" src="../../static/js/vue.js" 	th:src="@{${urls.getForLookupPath('/js/vue.js')}}"></script> </head> <body> 	<h1 th:text="${h}">原型</h1> </body> </html> 

五、整个目录结构

WebMvcConfigurer 配置了fastjson作为json的转换提供者。

@Configuration public class WebMvcConfigurer extends WebMvcConfigurerAdapter {  	@Override 	public void configureMessageConverters(List<HttpMessageConverter<?>> converters) { 		super.configureMessageConverters(converters);  		FastJsonHttpMessageConverter fastJsonConverter = new FastJsonHttpMessageConverter(); 		FastJsonConfig fastJsonConfig = new FastJsonConfig(); 		fastJsonConverter.setFastJsonConfig(fastJsonConfig);  		converters.add(fastJsonConverter); 	}  } 

 @ControllerAdvice public class ControllerConfig {  	@Autowired 	private ResourceUrlProvider resourceUrlProvider;  	@ModelAttribute("urls") 	public ResourceUrlProvider urls() { 		return this.resourceUrlProvider; 	}  } 

ControllerConfig配置了静态资源的版本，使用了MD5的方式，主要静态资源做过修改，那么发布时就可以不用清理浏览器的缓存了。urls.getForLookupPath会得到一串带有MD5的映射。

六、我们可以测试一下

Hibernate: select user0_.id as id1_0_, user0_.create_date as create_d2_0_, user0_.modify_date as modify_d3_0_, user0_.department as departme4_0_, user0_.email as email5_0_, user0_.enabled as enabled6_0_, user0_.name as name7_0_, user0_.password as password8_0_, user0_.phone as phone9_0_, user0_.username as usernam10_0_ from user user0_

符合我们预期的效果。

ps：在程序中使用了默认的目录结构，这符合 约定优于配置