SpringBoot-基于Maven工程使用SpringBoot
Spring Boot
SpringBoot是一个社区反馈推动的项目。SpringBoot可以说是至少五年来Spring乃至整个Java社区最有影响力的项目之一。SpringBoot主要包括以下特性：
- 直接嵌入Tomcat，Jetty或者Undertow作为Servlet container。从此之后再也不用将应用程序打包成war然后上传到application server里面了。
- 提供了starter POM，能够非常方便的进行包管理，很大程度上减少了jar hell或者dependency hell。
- 自动进行Spring框架的配置，节省程序员大量的时间和精力，能够让程序员专注在业务逻辑代码的编写上。
- 不需要任何第三方系统，Spring Boot自带了可以用于生产环境的程序状态信息和健康状态。同时可以让应用程序非常方便的读取外部的配置信息。
- 完全不需要任何代码的自动生成。更不需要用xml来进行框架配置。
基于Maven工程使用SpringBoot
新建Maven工程，编写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> <groupId>20171111</groupId>
<artifactId>springboot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging> <name>springboot</name>
<url>http://maven.apache.org</url> <parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.2.RELEASE</version>
<relativePath></relativePath>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties> <dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
编写main函数：
在这里标记HelloworldDemoApplication class为SpringBootApplication，SpringBoot在后台会根据这个标记进行很多自动配置，比如配置MVC，配置包扫描，注入必要的类，注入自动配置的类等等。
这里的main函数是一个java标准的main函数，这个相当于应用程序入口，servlet container会在启动的时候找到这个入口，启动Spring container，完成初始化。
package springboot; import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer; @SpringBootApplication
public class HelloworldDemoApplication implements EmbeddedServletContainerCustomizer{
public static void main(String[] args){
SpringApplication.run(HelloworldDemoApplication.class, args);
} public void customize(ConfigurableEmbeddedServletContainer container) {
// TODO 自动生成的方法存根
container.setPort(8088);
}
}
编写 HelloworldRestController类
package springboot; import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController; @RestController
public class HelloworldRestController {
@RequestMapping("/")
public String helloworld(){
return "hello world";
}
}
选择运行方式为：Maven Build ->对应的窗口里面设置Goals：clean package spring-boot:run，顺便为了方便把下面的Skip Tests也勾上，然后run。
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.3.2.RELEASE) 2017-11-11 23:41:56.105 INFO 8407 --- [ main] springboot.HelloworldDemoApplication : Starting HelloworldDemoApplication on pdeMacBook-Pro.local with PID 8407 (/Users/pg/Documents/workspace/springboot/target/classes started by pg in /Users/pg/Documents/workspace/springboot)
2017-11-11 23:41:56.107 INFO 8407 --- [ main] springboot.HelloworldDemoApplication : No active profile set, falling back to default profiles: default
2017-11-11 23:41:56.147 INFO 8407 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@563b3f89: startup date [Sat Nov 11 23:41:56 CST 2017]; root of context hierarchy
2017-11-11 23:41:57.262 INFO 8407 --- [ main] o.s.b.f.s.DefaultListableBeanFactory : Overriding bean definition for bean 'beanNameViewResolver' with a different definition: 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]]
2017-11-11 23:41:58.061 INFO 8407 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8088 (http)
2017-11-11 23:41:58.091 INFO 8407 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2017-11-11 23:41:58.093 INFO 8407 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.0.30
2017-11-11 23:41:58.224 INFO 8407 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2017-11-11 23:41:58.224 INFO 8407 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2077 ms
2017-11-11 23:41:58.590 INFO 8407 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2017-11-11 23:41:58.595 INFO 8407 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2017-11-11 23:41:58.596 INFO 8407 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2017-11-11 23:41:58.596 INFO 8407 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2017-11-11 23:41:58.596 INFO 8407 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2017-11-11 23:41:58.947 INFO 8407 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@563b3f89: startup date [Sat Nov 11 23:41:56 CST 2017]; root of context hierarchy
2017-11-11 23:41:59.028 INFO 8407 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/]}" onto public java.lang.String springboot.HelloworldRestController.helloworld()
2017-11-11 23:41:59.032 INFO 8407 --- [ 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)
2017-11-11 23:41:59.032 INFO 8407 --- [ 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)
2017-11-11 23:41:59.056 INFO 8407 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-11-11 23:41:59.056 INFO 8407 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-11-11 23:41:59.091 INFO 8407 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-11-11 23:41:59.207 INFO 8407 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2017-11-11 23:41:59.291 ERROR 8407 --- [ main] o.a.coyote.http11.Http11NioProtocol : Failed to start end point associated with ProtocolHandler ["http-nio-8088"]
如果你遇到这种问题：Failed to start end point associated with ProtocolHandler ["http-nio-8088"]
这表明8088端口被占用了，可以通过实现EmbeddedServletContainerCustomizer接口修改SpringBoot内置的tomcat端口来解决端口被占用的问题：
package springboot; import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer; @SpringBootApplication
public class HelloworldDemoApplication implements EmbeddedServletContainerCustomizer{
public static void main(String[] args){
SpringApplication.run(HelloworldDemoApplication.class, args);
} public void customize(ConfigurableEmbeddedServletContainer container) {
// TODO 自动生成的方法存根
container.setPort(8089);
}
}
修改端口为8089：再次运行：
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.3.2.RELEASE) 2017-11-11 23:47:48.204 INFO 8449 --- [ main] springboot.HelloworldDemoApplication : Starting HelloworldDemoApplication on pdeMacBook-Pro.local with PID 8449 (/Users/pg/Documents/workspace/springboot/target/classes started by pg in /Users/pg/Documents/workspace/springboot)
2017-11-11 23:47:48.209 INFO 8449 --- [ main] springboot.HelloworldDemoApplication : No active profile set, falling back to default profiles: default
2017-11-11 23:47:48.363 INFO 8449 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@48af20f4: startup date [Sat Nov 11 23:47:48 CST 2017]; root of context hierarchy
2017-11-11 23:47:49.230 INFO 8449 --- [ main] o.s.b.f.s.DefaultListableBeanFactory : Overriding bean definition for bean 'beanNameViewResolver' with a different definition: 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]]
2017-11-11 23:47:50.197 INFO 8449 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8089 (http)
2017-11-11 23:47:50.223 INFO 8449 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2017-11-11 23:47:50.225 INFO 8449 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.0.30
2017-11-11 23:47:50.360 INFO 8449 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2017-11-11 23:47:50.362 INFO 8449 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2001 ms
2017-11-11 23:47:50.761 INFO 8449 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2017-11-11 23:47:50.767 INFO 8449 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2017-11-11 23:47:50.767 INFO 8449 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2017-11-11 23:47:50.767 INFO 8449 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2017-11-11 23:47:50.768 INFO 8449 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2017-11-11 23:47:51.092 INFO 8449 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@48af20f4: startup date [Sat Nov 11 23:47:48 CST 2017]; root of context hierarchy
2017-11-11 23:47:51.161 INFO 8449 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/]}" onto public java.lang.String springboot.HelloworldRestController.helloworld()
2017-11-11 23:47:51.164 INFO 8449 --- [ 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)
2017-11-11 23:47:51.165 INFO 8449 --- [ 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)
2017-11-11 23:47:51.193 INFO 8449 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-11-11 23:47:51.194 INFO 8449 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-11-11 23:47:51.237 INFO 8449 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-11-11 23:47:51.365 INFO 8449 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2017-11-11 23:47:51.463 INFO 8449 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8089 (http)
2017-11-11 23:47:51.471 INFO 8449 --- [ main] springboot.HelloworldDemoApplication : Started HelloworldDemoApplication in 14.261 seconds (JVM running for 19.706)
2017-11-11 23:51:29.888 INFO 8449 --- [nio-8089-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet 'dispatcherServlet'
2017-11-11 23:51:29.890 INFO 8449 --- [nio-8089-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started
2017-11-11 23:51:29.920 INFO 8449 --- [nio-8089-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 30 ms
打开浏览器输入：localhost:8089
基于Maven的SpringBoot简单使用就完成了。
SpringBoot-基于Maven工程使用SpringBoot的更多相关文章
- （三）创建基于maven的javaFX+springboot项目创建
创建基于maven的javaFx+springboot项目有两种方式,第一种为通过非编码的方式来设计UI集成springboot:第二种为分离用户界面(UI)和后端逻辑集成springboot,其中用 ...
- （四）创建基于maven的javaFX+springboot项目，用户界面与后台逻辑分离方式
下面来介绍创建maven的javaFX+springboot项目,基于用户界面与后天逻辑分离的方式,用户界面使用fxml文件来常见,类似于jsp,可以引入css文件修饰界面 maven依赖 <d ...
- maven工程仿springboot手写代码区分开发测试生产
读取代码: package com.jz.compute.mc.v2.config; import java.util.Enumeration; import java.util.ResourceBu ...
- 【java工具类】java做的一个xml转Excel工具，基于maven工程
说明:适合数据库导出为xml时转成Excel 本工具将上传至GitHub:https://github.com/xiaostudy/xiaostudyAPI3 doc4j的maven依赖 <!- ...
- 菜鸟——springboot+mybatis+maven
网上找了很多资料,学习如何搭建springboot,由于刚刚接触springboot,不是很熟练,通过参考网上别人搭建的例子,自己也搭建了一个简单的springboot+mybaits+maven 网 ...
- 基于Maven的Springboot+Mybatis+Druid+Swagger2+mybatis-generator框架环境搭建
基于Maven的Springboot+Mybatis+Druid+Swagger2+mybatis-generator框架环境搭建 前言 最近做回后台开发,重新抓起以前学过的SSM(Spring+Sp ...
- SpringBoot 1.快速搭建一个 SpringBoot Maven工程
一.新建一个Maven工程 (1)选择创建简单MAVNE工程 (2)输入你自己的MAVEN工程的Group Id(必填).Artifact Id(必填).Version(必填).Packaging(必 ...
- SpringBoot热部署配置（基于Maven）
热部署的意思是只要类中的代码被修改了,就能实时生效,而不用重启项目.spring-boot-devtools 是一个为开发者服务的一个模块,其中最重要的功能就是自动应用代码更改到最新的App上面去.原 ...
- 基于Maven的SpringBoot项目实现热部署的两种方式
转载:http://blog.csdn.net/tengxing007/article/details/72675168 前言 JRebel是JavaEE中比较流行的热部署插件,可快速实现热部署,节省 ...
随机推荐
- ADO.NET数据库应用开发_ExtendedProperties属性
7.5.5 ExtendedProperties属性 ExtendedProperties属性用来获取存储自定义属性的集合.可以在该属性中增加附加的存储信息.它的扩展属性必须是字符串类型.当以XML的 ...
- Groovy学习专栏
今天新开了一个groovy的学习专栏,因为最近工作中会用到Groovy模板. 然后就是在网上找了一下Groovy模板相关的东西发现ibm中在2005年就有讲到这个的,我勒个去,这么早,我初中都还没毕业 ...
- Maven基础命令
Maven 参数 -D 传入属性参数 -P 使用pom中指定的配置 -e 显示maven运行出错的信息 -o 离线执行命令,即不去远程仓库更新包 -X 显示maven允许的debug信息 -U 强制去 ...
- [转][Python基础]Python中的Lambda表达式
引用自:http://www.cnblogs.com/evening/archive/2012/03/29/2423554.html 在学习python的过程中,lambda的语法时常会使人感到困惑, ...
- Differential Geometry之第八章常Gauss曲率曲面
第八章.常Gauss曲率曲面 1.常正Gauss曲率曲面 2.常负Gauss曲率曲面与Sine-Gordon方程 3.Hilbert定理 4.Backlund变换 4.1.线汇与焦曲面 4.2.Bac ...
- 在函数体的“出口处”，对 return 语句的正确性和效率进行检查
在函数体的“出口处”,对 return 语句的正确性和效率进行检查. 如果函数有返回值,那么函数的“出口处”是 return 语句. 我们不要轻视 return 语 句.如果 return 语句写得不 ...
- 【BZOJ】1093: [ZJOI2007]最大半连通子图（tarjan+拓扑序）
http://www.lydsy.com/JudgeOnline/problem.php?id=1093 两个条件综合起来加上求最大的节点数,那么很明显如果是环一定要缩点. 然后再仔细思考下就是求da ...
- Modify the server ports
在eclipse中配置好tomcat后,如今有需求须要在一个eclipse启动两个tomcat甚至很多其它,仅仅改动tomcat的8080port肯定不行的,详细须要改动tomcat的shutdown ...
- php的form中元素name属性相同时的取值问题
php的form中元素name属性相同时的取值问题:修改元素的名称,在名称后面加上 '[]',然后取值时即可得array()数组. 一.以复选框为例: <html> <head> ...
- oracle中恢复删除的表
1.表恢复,如果在删除表的同时删除的数据,那么表恢复也能恢复当时删除时的数据 -----查询删除的表 select * from recyclebin order by droptime desc - ...