spring-boot系列:初试spring-boot
部署父工程
<?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.hadu.try</groupId> <artifactId>try-spring-boot</artifactId> <packaging>pom</packaging> <version>1.0-SNAPSHOT</version> <modules> <module>try-web</module> </modules> <!-- Inherit defaults from Spring Boot --> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.3.5.RELEASE</version> </parent> </project>
建立一个父工程,方便接下来分模块尝试spring boot。在父工程中引入spring boot的默认pom:spring-boot-starter-parent。
建立web子模块
pom配置
<?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"> <parent> <artifactId>try-spring-boot</artifactId> <groupId>com.hadu.try</groupId> <version>1.0-SNAPSHOT</version> </parent> <modelVersion>4.0.0</modelVersion> <artifactId>try-web</artifactId> <!-- Add typical dependencies for a web application --> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> <!-- Package as an executable jar --> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
引入spring boot的web boot,接下来去定义controller就可以快速建立一个web程序,完全避开web复杂的xml配置。
第一个controller
/** * Created by lili on 16/5/16. */ import org.springframework.boot.*; import org.springframework.boot.autoconfigure.*; import org.springframework.stereotype.*; import org.springframework.web.bind.annotation.*; @Controller @EnableAutoConfiguration public class SampleController { @RequestMapping("/") @ResponseBody String home() { return "Hello World!"; } public static void main(String[] args) throws Exception { SpringApplication.run(SampleController.class, args); } }
spring boot的神奇之处就在这里,我们完全可以按照普通java程序一样去run,不需要将web应用打包到诸如tomcat的web容器中就可以启动web应用了。
@EnableAutoConfiguration 这个注解让spring boot根据你引入jar的依赖关系去猜测你需要构建的程序,由于spring-boot-starter-web添加了Tomcat和Spring MVC
的jar,所以这里spring boot就认为你要构建一个web应用,所以会自动为你配置web相关的一些配置。
效果演示
run起来的效果如下:
. ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v1.3.5.RELEASE) 2016-05-17 11:25:28.359 INFO 1571 --- [ main] SampleController : Starting SampleController on Lilis-MacBook-Pro.local with PID 1571 (started by lili in /Users/lili/百度云同步盘/gitDir/try-spring-boot) 2016-05-17 11:25:28.364 INFO 1571 --- [ main] SampleController : No active profile set, falling back to default profiles: default 2016-05-17 11:25:28.522 INFO 1571 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@17baae6e: startup date [Tue May 17 11:25:28 CST 2016]; root of context hierarchy 2016-05-17 11:25:31.307 INFO 1571 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http) 2016-05-17 11:25:31.335 INFO 1571 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat 2016-05-17 11:25:31.337 INFO 1571 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.0.33 2016-05-17 11:25:31.621 INFO 1571 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext 2016-05-17 11:25:31.622 INFO 1571 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 3109 ms 2016-05-17 11:25:32.243 INFO 1571 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/] 2016-05-17 11:25:32.252 INFO 1571 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*] 2016-05-17 11:25:32.253 INFO 1571 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*] 2016-05-17 11:25:32.253 INFO 1571 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*] 2016-05-17 11:25:32.253 INFO 1571 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*] 2016-05-17 11:25:32.925 INFO 1571 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@17baae6e: startup date [Tue May 17 11:25:28 CST 2016]; root of context hierarchy 2016-05-17 11:25:33.178 INFO 1571 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/]}" onto java.lang.String SampleController.home() 2016-05-17 11:25:33.181 INFO 1571 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest) 2016-05-17 11:25:33.181 INFO 1571 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) 2016-05-17 11:25:33.244 INFO 1571 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2016-05-17 11:25:33.244 INFO 1571 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2016-05-17 11:25:33.302 INFO 1571 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2016-05-17 11:25:33.490 INFO 1571 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup 2016-05-17 11:25:33.618 INFO 1571 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http) 2016-05-17 11:25:33.624 INFO 1571 --- [ main] SampleController : Started SampleController in 6.365 seconds (JVM running for 7.385)
下面来看看这个项目的依赖:
[INFO] com.hadu.try:try-web:jar:1.0-SNAPSHOT
[INFO] \- org.springframework.boot:spring-boot-starter-web:jar:1.3.5.RELEASE:compile
[INFO] +- org.springframework.boot:spring-boot-starter:jar:1.3.5.RELEASE:compile
[INFO] | +- org.springframework.boot:spring-boot:jar:1.3.5.RELEASE:compile
[INFO] | +- org.springframework.boot:spring-boot-autoconfigure:jar:1.3.5.RELEASE:compile
[INFO] | +- org.springframework.boot:spring-boot-starter-logging:jar:1.3.5.RELEASE:compile
[INFO] | | +- ch.qos.logback:logback-classic:jar:1.1.7:compile
[INFO] | | | +- ch.qos.logback:logback-core:jar:1.1.7:compile
[INFO] | | | \- org.slf4j:slf4j-api:jar:1.7.21:compile
[INFO] | | +- org.slf4j:jcl-over-slf4j:jar:1.7.21:compile
[INFO] | | +- org.slf4j:jul-to-slf4j:jar:1.7.21:compile
[INFO] | | \- org.slf4j:log4j-over-slf4j:jar:1.7.21:compile
[INFO] | +- org.springframework:spring-core:jar:4.2.6.RELEASE:compile
[INFO] | \- org.yaml:snakeyaml:jar:1.16:runtime
[INFO] +- org.springframework.boot:spring-boot-starter-tomcat:jar:1.3.5.RELEASE:compile
[INFO] | +- org.apache.tomcat.embed:tomcat-embed-core:jar:8.0.33:compile
[INFO] | +- org.apache.tomcat.embed:tomcat-embed-el:jar:8.0.33:compile
[INFO] | +- org.apache.tomcat.embed:tomcat-embed-logging-juli:jar:8.0.33:compile
[INFO] | \- org.apache.tomcat.embed:tomcat-embed-websocket:jar:8.0.33:compile
[INFO] +- org.springframework.boot:spring-boot-starter-validation:jar:1.3.5.RELEASE:compile
[INFO] | \- org.hibernate:hibernate-validator:jar:5.2.4.Final:compile
[INFO] | +- javax.validation:validation-api:jar:1.1.0.Final:compile
[INFO] | +- org.jboss.logging:jboss-logging:jar:3.3.0.Final:compile
[INFO] | \- com.fasterxml:classmate:jar:1.1.0:compile
[INFO] +- com.fasterxml.jackson.core:jackson-databind:jar:2.6.6:compile
[INFO] | +- com.fasterxml.jackson.core:jackson-annotations:jar:2.6.6:compile
[INFO] | \- com.fasterxml.jackson.core:jackson-core:jar:2.6.6:compile
[INFO] +- org.springframework:spring-web:jar:4.2.6.RELEASE:compile
[INFO] | +- org.springframework:spring-aop:jar:4.2.6.RELEASE:compile
[INFO] | | \- aopalliance:aopalliance:jar:1.0:compile
[INFO] | +- org.springframework:spring-beans:jar:4.2.6.RELEASE:compile
[INFO] | \- org.springframework:spring-context:jar:4.2.6.RELEASE:compile
[INFO] \- org.springframework:spring-webmvc:jar:4.2.6.RELEASE:compile
[INFO] \- org.springframework:spring-expression:jar:4.2.6.RELEASE:compile
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