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  • Spring Boot开发之明月千城(一)

    原文地址:http://qindongliang.iteye.com/blog/2205633

    最近数据分析的项目也即将告一段落了,中间也积累了很多知识,特此记录一下。其中用的最爽的Web组合开发就是Intellij IDEA + Maven + Spring Boot + Velocity + Boostrap + jQuery了,关于后端的数据分析和处理的Hadoop模块,会放在Hadoop分类的博客文章中记录。 

     


    Spring Boot提供了一个强大的一键式Spring的集成开发环境,能够单独进行一个Spring应用的开发,其中: 

    (1)集中式配置(application.properties)+注解,大大简化了开发流程 
    (2)内嵌的Tomcat和Jetty容器,可直接打成jar包启动,无需提供Java war包以及繁琐的Web配置 
    (3)提供了Spring各个插件的基于Maven的pom模板配置,开箱即用,便利无比。 
    (4)可以在任何你想自动化配置的地方,实现可能 
    (5)提供更多的企业级开发特性,如何系统监控,健康诊断,权限控制 
    (6) 无冗余代码生成和XML强制配置 
    (7)提供支持强大的Restfult风格的编码,非常简洁 

    当然Spring Boot提供的功能,远远比上面的强大,散仙会在后续文章中,逐渐以实际工作中的项目为背景,穿插记录使用Spring Boot的心得体会。 

    下面看一个入门级的例子: 

    pom依赖: 


    Java代码  收藏代码
    1. <?xml version="1.0" encoding="UTF-8"?>  
    2. <project xmlns="http://maven.apache.org/POM/4.0.0"  
    3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
    4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">  
    5.     <modelVersion>4.0.0</modelVersion>  
    6.   
    7.     <groupId>com.spring.boot</groupId>  
    8.     <artifactId>springboot</artifactId>  
    9.     <version>1.0-SNAPSHOT</version>  
    10.   
    11.     <parent>  
    12.         <groupId>org.springframework.boot</groupId>  
    13.         <artifactId>spring-boot-starter-parent</artifactId>  
    14.         <version>1.2.3.RELEASE</version>  
    15.     </parent>  
    16.     <dependencies>  
    17.         <dependency>  
    18.             <groupId>org.springframework.boot</groupId>  
    19.             <artifactId>spring-boot-starter-web</artifactId>  
    20.         </dependency>  
    21.     </dependencies>  
    22. </project>  



    核心代码: 

    Java代码  收藏代码
    1. package controller;  
    2.   
    3. import org.springframework.boot.SpringApplication;  
    4. import org.springframework.boot.autoconfigure.EnableAutoConfiguration;  
    5. import org.springframework.stereotype.Controller;  
    6. import org.springframework.web.bind.annotation.RequestBody;  
    7. import org.springframework.web.bind.annotation.RequestMapping;  
    8. import org.springframework.web.bind.annotation.ResponseBody;  
    9.   
    10. /** 
    11.  * Created by 三劫散仙 on 2015/4/24. 
    12.  */  
    13. @Controller  
    14. @EnableAutoConfiguration  
    15. public class HellowController {  
    16.   
    17.   
    18.   
    19.     @RequestMapping("/hellow")  
    20.     @ResponseBody  
    21.     public String hellow(){  
    22.   
    23.         return "哈喽,Spring Boot !";  
    24.     }  
    25.   
    26.   
    27.     public static void main(String[] args) {  
    28.         //第一个简单的应用,  
    29.         SpringApplication.run(HellowController.class,args);  
    30.   
    31.     }  
    32.   
    33. }  



    控制台输出: 

    Java代码  收藏代码
    1. D:softJavajdk1.7.0_04injava -Didea.launcher.port=7532 "-Didea.launcher.bin.path=D:ideaideainstallIntelliJ IDEA 14.0.2in" -Dfile.encoding=UTF-8 -classpath "D:softJavajdk1.7.0_04jrelibcharsets.jar;D:softJavajdk1.7.0_04jrelibdeploy.jar;D:softJavajdk1.7.0_04jrelibjavaws.jar;D:softJavajdk1.7.0_04jrelibjce.jar;D:softJavajdk1.7.0_04jrelibjfr.jar;D:softJavajdk1.7.0_04jrelibjsse.jar;D:softJavajdk1.7.0_04jrelibmanagement-agent.jar;D:softJavajdk1.7.0_04jrelibplugin.jar;D:softJavajdk1.7.0_04jrelib esources.jar;D:softJavajdk1.7.0_04jrelib t.jar;D:softJavajdk1.7.0_04jrelibextdnsns.jar;D:softJavajdk1.7.0_04jrelibextlocaledata.jar;D:softJavajdk1.7.0_04jrelibextsunec.jar;D:softJavajdk1.7.0_04jrelibextsunjce_provider.jar;D:softJavajdk1.7.0_04jrelibextsunmscapi.jar;D:softJavajdk1.7.0_04jrelibextzipfs.jar;D:ideaideaworkspaceSpringboot argetclasses;C:Usersqin.m2 epositoryorgspringframeworkootspring-boot-starter-web1.2.3.RELEASEspring-boot-starter-web-1.2.3.RELEASE.jar;C:Usersqin.m2 epositoryorgspringframeworkootspring-boot-starter1.2.3.RELEASEspring-boot-starter-1.2.3.RELEASE.jar;C:Usersqin.m2 epositoryorgspringframeworkootspring-boot1.2.3.RELEASEspring-boot-1.2.3.RELEASE.jar;C:Usersqin.m2 epositoryorgspringframeworkootspring-boot-autoconfigure1.2.3.RELEASEspring-boot-autoconfigure-1.2.3.RELEASE.jar;C:Usersqin.m2 epositoryorgspringframeworkootspring-boot-starter-logging1.2.3.RELEASEspring-boot-starter-logging-1.2.3.RELEASE.jar;C:Usersqin.m2 epositoryorgslf4jjcl-over-slf4j1.7.11jcl-over-slf4j-1.7.11.jar;C:Usersqin.m2 epositoryorgslf4jslf4j-api1.7.11slf4j-api-1.7.11.jar;C:Usersqin.m2 epositoryorgslf4jjul-to-slf4j1.7.11jul-to-slf4j-1.7.11.jar;C:Usersqin.m2 epositoryorgslf4jlog4j-over-slf4j1.7.11log4j-over-slf4j-1.7.11.jar;C:Usersqin.m2 epositorychqoslogbacklogback-classic1.1.3logback-classic-1.1.3.jar;C:Usersqin.m2 epositorychqoslogbacklogback-core1.1.3logback-core-1.1.3.jar;C:Usersqin.m2 epositoryorgyamlsnakeyaml1.14snakeyaml-1.14.jar;C:Usersqin.m2 epositoryorgspringframeworkootspring-boot-starter-tomcat1.2.3.RELEASEspring-boot-starter-tomcat-1.2.3.RELEASE.jar;C:Usersqin.m2 epositoryorgapache omcatembed omcat-embed-core8.0.20 omcat-embed-core-8.0.20.jar;C:Usersqin.m2 epositoryorgapache omcatembed omcat-embed-el8.0.20 omcat-embed-el-8.0.20.jar;C:Usersqin.m2 epositoryorgapache omcatembed omcat-embed-logging-juli8.0.20 omcat-embed-logging-juli-8.0.20.jar;C:Usersqin.m2 epositoryorgapache omcatembed omcat-embed-websocket8.0.20 omcat-embed-websocket-8.0.20.jar;C:Usersqin.m2 epositorycomfasterxmljacksoncorejackson-databind2.4.5jackson-databind-2.4.5.jar;C:Usersqin.m2 epositorycomfasterxmljacksoncorejackson-annotations2.4.5jackson-annotations-2.4.5.jar;C:Usersqin.m2 epositorycomfasterxmljacksoncorejackson-core2.4.5jackson-core-2.4.5.jar;C:Usersqin.m2 epositoryorghibernatehibernate-validator5.1.3.Finalhibernate-validator-5.1.3.Final.jar;C:Usersqin.m2 epositoryjavaxvalidationvalidation-api1.1.0.Finalvalidation-api-1.1.0.Final.jar;C:Usersqin.m2 epositoryorgjbossloggingjboss-logging3.1.3.GAjboss-logging-3.1.3.GA.jar;C:Usersqin.m2 epositorycomfasterxmlclassmate1.0.0classmate-1.0.0.jar;C:Usersqin.m2 epositoryorgspringframeworkspring-core4.1.6.RELEASEspring-core-4.1.6.RELEASE.jar;C:Usersqin.m2 epositoryorgspringframeworkspring-web4.1.6.RELEASEspring-web-4.1.6.RELEASE.jar;C:Usersqin.m2 epositoryorgspringframeworkspring-aop4.1.6.RELEASEspring-aop-4.1.6.RELEASE.jar;C:Usersqin.m2 epositoryaopallianceaopalliance1.0aopalliance-1.0.jar;C:Usersqin.m2 epositoryorgspringframeworkspring-beans4.1.6.RELEASEspring-beans-4.1.6.RELEASE.jar;C:Usersqin.m2 epositoryorgspringframeworkspring-context4.1.6.RELEASEspring-context-4.1.6.RELEASE.jar;C:Usersqin.m2 epositoryorgspringframeworkspring-webmvc4.1.6.RELEASEspring-webmvc-4.1.6.RELEASE.jar;C:Usersqin.m2 epositoryorgspringframeworkspring-expression4.1.6.RELEASEspring-expression-4.1.6.RELEASE.jar;D:ideaideainstallIntelliJ IDEA 14.0.2libidea_rt.jar" com.intellij.rt.execution.application.AppMain controller.HellowController  
    2.   
    3.   .   ____          _            __ _ _  
    4.  /\ / ___'_ __ _ _(_)_ __  __ _      
    5. ( ( )\___ | '_ | '_| | '_ / _` |      
    6.  \/  ___)| |_)| | | | | || (_| |  ) ) ) )  
    7.   '  |____| .__|_| |_|_| |_\__, | / / / /  
    8.  =========|_|==============|___/=/_/_/_/  
    9.  :: Spring Boot ::        (v1.2.3.RELEASE)  
    10.   
    11. 2015-04-24 01:12:41.399  INFO 4428 --- [           main] controller.HellowController              : Starting HellowController on qin-PC with PID 4428 (D:ideaideaworkspaceSpringboot argetclasses started by qin in D:ideaideaworkspaceSpringboot)  
    12. 2015-04-24 01:12:41.458  INFO 4428 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@2923a47c: startup date [Fri Apr 24 01:12:41 CST 2015]; root of context hierarchy  
    13. 2015-04-24 01:12:42.393  INFO 4428 --- [           main] o.s.b.f.s.DefaultListableBeanFactory     : Overriding bean definition for bean 'beanNameViewResolver': replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration; factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter; factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter.class]]  
    14. 2015-04-24 01:12:44.399  INFO 4428 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)  
    15. 2015-04-24 01:12:44.959  INFO 4428 --- [           main] o.apache.catalina.core.StandardService   : Starting service Tomcat  
    16. 2015-04-24 01:12:44.973  INFO 4428 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.0.20  
    17. 2015-04-24 01:12:45.332  INFO 4428 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext  
    18. 2015-04-24 01:12:45.332  INFO 4428 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 3880 ms  
    19. 2015-04-24 01:12:46.274  INFO 4428 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean        : Mapping servlet: 'dispatcherServlet' to [/]  
    20. 2015-04-24 01:12:46.295  INFO 4428 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean  : Mapping filter: 'characterEncodingFilter' to: [/*] 
    21. 2015-04-24 01:12:46.296  INFO 4428 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean  : Mapping filter: 'hiddenHttpMethodFilter' to: [/*] 
    22. 2015-04-24 01:12:46.481  INFO 4428 --- [           main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@2923a47c: startup date [Fri Apr 24 01:12:41 CST 2015]; root of context hierarchy 
    23. 2015-04-24 01:12:46.542  INFO 4428 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/hellow],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto public java.lang.String controller.HellowController.hellow() 
    24. 2015-04-24 01:12:46.544  INFO 4428 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}" 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) 
    25. 2015-04-24 01:12:46.545  INFO 4428 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],methods=[],params=[],headers=[],consumes=[],produces=[text/html],custom=[]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest) 
    26. 2015-04-24 01:12:46.595  INFO 4428 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 
    27. 2015-04-24 01:12:46.596  INFO 4428 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 
    28. 2015-04-24 01:12:46.639  INFO 4428 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]  
    29. 2015-04-24 01:12:46.708  INFO 4428 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup  
    30. 2015-04-24 01:12:46.829  INFO 4428 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)  
    31. 2015-04-24 01:12:46.830  INFO 4428 --- [           main] controller.HellowController              : Started HellowController in 5.978 seconds (JVM running for 6.739)  
    32. 2015-04-24 01:13:29.470  INFO 4428 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring FrameworkServlet 'dispatcherServlet'  
    33. 2015-04-24 01:13:29.470  INFO 4428 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization started  
    34. 2015-04-24 01:13:29.486  INFO 4428 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 16 ms  



    默认的内嵌容器,为tomcat,当然这个我们可以随便指定,包括端口号,http访问: 





    ok,至此,我们一个简单的http应用就开发完毕了,给人的感觉就是简直比用Python的Django和PHP还轻,而且还是我们十分熟悉的JAVA开发,所以与很多其他的JAVA开源项目相结合非常容易,比如Apache Lucene,Solr,Hadoop,Spark,ElasticSearch等,支持很多好处,不言而喻! 

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  • 原文地址:https://www.cnblogs.com/AloneSword/p/4790128.html
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