SpringBoot-快速上手

使用Idea建立SpringBoot專案

1.開啟idea建立一個SpringBoot專案，選擇Spring Initializr

2.輸入座標的名字

3.建立一個web專案，然後完成即可

4.專案建立成功

5.檢視pom檔案

<?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.fpy</groupId>
	<artifactId>springbootdemo</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>springbootdemo</name>
	<description>Demo project for Spring Boot</description>
	<!--依賴於spring-boot-starter-parent-->
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.2.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<!--指定編碼及jdk版本-->
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
	</properties>
	<!--開發web專案相關依賴-->
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<!--springboot單元測試-->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>
	<!--maven構建-->
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>
</project>

6.建立一個測試demo

7.程式自動生成的SpringbootdemoApplication，會有一個@SpringBootApplication的註解，這個註解用來標明這個類是程式的入口

8.直接執行 步驟7 的main方法進行測試，會出現一個圖形如下

"C:\Program Files\Java\jdk1.8.0_92\bin\java" -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=64040 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true -javaagent:F:\install\IntelliIDEA2017.2.1\lib\idea_rt.jar=64041:F:\install\IntelliIDEA2017.2.1\bin -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_92\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_92\jre\lib\rt.jar;D:\work_space\springbootdemo\target\classes;D:\maven\.m2\repository\org\springframework\boot\spring-boot-starter-web\2.0.2.RELEASE\spring-boot-starter-web-2.0.2.RELEASE.jar;D:\maven\.m2\repository\org\springframework\boot\spring-boot-starter\2.0.2.RELEASE\spring-boot-starter-2.0.2.RELEASE.jar;D:\maven\.m2\repository\org\springframework\boot\spring-boot\2.0.2.RELEASE\spring-boot-2.0.2.RELEASE.jar;D:\maven\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\2.0.2.RELEASE\spring-boot-autoconfigure-2.0.2.RELEASE.jar;D:\maven\.m2\repository\org\springframework\boot\spring-boot-starter-logging\2.0.2.RELEASE\spring-boot-starter-logging-2.0.2.RELEASE.jar;D:\maven\.m2\repository\ch\qos\logback\logback-classic\1.2.3\logback-classic-1.2.3.jar;D:\maven\.m2\repository\ch\qos\logback\logback-core\1.2.3\logback-core-1.2.3.jar;D:\maven\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.10.0\log4j-to-slf4j-2.10.0.jar;D:\maven\.m2\repository\org\apache\logging\log4j\log4j-api\2.10.0\log4j-api-2.10.0.jar;D:\maven\.m2\repository\org\slf4j\jul-to-slf4j\1.7.25\jul-to-slf4j-1.7.25.jar;D:\maven\.m2\repository\javax\annotation\javax.annotation-api\1.3.2\javax.annotation-api-1.3.2.jar;D:\maven\.m2\repository\org\yaml\snakeyaml\1.19\snakeyaml-1.19.jar;D:\maven\.m2\repository\org\springframework\boot\spring-boot-starter-json\2.0.2.RELEASE\spring-boot-starter-json-2.0.2.RELEASE.jar;D:\maven\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.9.5\jackson-databind-2.9.5.jar;D:\maven\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.9.0\jackson-annotations-2.9.0.jar;D:\maven\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.9.5\jackson-core-2.9.5.jar;D:\maven\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.9.5\jackson-datatype-jdk8-2.9.5.jar;D:\maven\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.9.5\jackson-datatype-jsr310-2.9.5.jar;D:\maven\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.9.5\jackson-module-parameter-names-2.9.5.jar;D:\maven\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\2.0.2.RELEASE\spring-boot-starter-tomcat-2.0.2.RELEASE.jar;D:\maven\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\8.5.31\tomcat-embed-core-8.5.31.jar;D:\maven\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\8.5.31\tomcat-embed-el-8.5.31.jar;D:\maven\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\8.5.31\tomcat-embed-websocket-8.5.31.jar;D:\maven\.m2\repository\org\hibernate\validator\hibernate-validator\6.0.9.Final\hibernate-validator-6.0.9.Final.jar;D:\maven\.m2\repository\javax\validation\validation-api\2.0.1.Final\validation-api-2.0.1.Final.jar;D:\maven\.m2\repository\org\jboss\logging\jboss-logging\3.3.2.Final\jboss-logging-3.3.2.Final.jar;D:\maven\.m2\repository\com\fasterxml\classmate\1.3.4\classmate-1.3.4.jar;D:\maven\.m2\repository\org\springframework\spring-web\5.0.6.RELEASE\spring-web-5.0.6.RELEASE.jar;D:\maven\.m2\repository\org\springframework\spring-beans\5.0.6.RELEASE\spring-beans-5.0.6.RELEASE.jar;D:\maven\.m2\repository\org\springframework\spring-webmvc\5.0.6.RELEASE\spring-webmvc-5.0.6.RELEASE.jar;D:\maven\.m2\repository\org\springframework\spring-aop\5.0.6.RELEASE\spring-aop-5.0.6.RELEASE.jar;D:\maven\.m2\repository\org\springframework\spring-context\5.0.6.RELEASE\spring-context-5.0.6.RELEASE.jar;D:\maven\.m2\repository\org\springframework\spring-expression\5.0.6.RELEASE\spring-expression-5.0.6.RELEASE.jar;D:\maven\.m2\repository\org\slf4j\slf4j-api\1.7.25\slf4j-api-1.7.25.jar;D:\maven\.m2\repository\org\springframework\spring-core\5.0.6.RELEASE\spring-core-5.0.6.RELEASE.jar;D:\maven\.m2\repository\org\springframework\spring-jcl\5.0.6.RELEASE\spring-jcl-5.0.6.RELEASE.jar" com.fpy.springbootdemo.SpringbootdemoApplication

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.2.RELEASE)

2018-06-02 10:08:01.430  INFO 6032 --- [           main] c.f.s.SpringbootdemoApplication          : Starting SpringbootdemoApplication on sixfly with PID 6032 (D:\work_space\springbootdemo\target\classes started by Administrator in D:\work_space\springbootdemo)
2018-06-02 10:08:01.436  INFO 6032 --- [           main] c.f.s.SpringbootdemoApplication          : No active profile set, falling back to default profiles: default
2018-06-02 10:08:01.524  INFO 6032 --- [           main] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@4de5031f: startup date [Sat Jun 02 10:08:01 CST 2018]; root of context hierarchy
2018-06-02 10:08:02.900 ERROR 6032 --- [           main] o.a.catalina.core.AprLifecycleListener   : An incompatible version [1.1.29] of the APR based Apache Tomcat Native library is installed, while Tomcat requires version [1.2.14]
2018-06-02 10:08:03.062  INFO 6032 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2018-06-02 10:08:03.080 ERROR 6032 --- [           main] o.a.catalina.core.AprLifecycleListener   : An incompatible version [1.1.29] of the APR based Apache Tomcat Native library is installed, while Tomcat requires version [1.2.14]
2018-06-02 10:08:03.094  INFO 6032 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2018-06-02 10:08:03.095  INFO 6032 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.31
2018-06-02 10:08:03.101 ERROR 6032 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener   : An incompatible version [1.1.29] of the APR based Apache Tomcat Native library is installed, while Tomcat requires version [1.2.14]
2018-06-02 10:08:03.504  INFO 6032 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2018-06-02 10:08:03.504  INFO 6032 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1984 ms
2018-06-02 10:08:03.676  INFO 6032 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Servlet dispatcherServlet mapped to [/]
2018-06-02 10:08:03.681  INFO 6032 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-06-02 10:08:03.681  INFO 6032 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-06-02 10:08:03.682  INFO 6032 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-06-02 10:08:03.682  INFO 6032 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2018-06-02 10:08:03.821  INFO 6032 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-06-02 10:08:04.038  INFO 6032 --- [           main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@4de5031f: startup date [Sat Jun 02 10:08:01 CST 2018]; root of context hierarchy
2018-06-02 10:08:04.095  INFO 6032 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/]}" onto public java.lang.String com.fpy.springbootdemo.com.fpy.demo.welcome()
2018-06-02 10:08:04.101  INFO 6032 --- [           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.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-06-02 10:08:04.102  INFO 6032 --- [           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.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-06-02 10:08:04.143  INFO 6032 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-06-02 10:08:04.143  INFO 6032 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-06-02 10:08:04.324  INFO 6032 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2018-06-02 10:08:04.388  INFO 6032 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2018-06-02 10:08:04.394  INFO 6032 --- [           main] c.f.s.SpringbootdemoApplication          : Started SpringbootdemoApplication in 3.705 seconds (JVM running for 4.962)
2018-06-02 10:08:18.840 ERROR 6032 --- [nio-8080-exec-1] o.a.catalina.core.AprLifecycleListener   : An incompatible version [1.1.29] of the APR based Apache Tomcat Native library is installed, while Tomcat requires version [1.2.14]
2018-06-02 10:08:18.882  INFO 6032 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring FrameworkServlet 'dispatcherServlet'
2018-06-02 10:08:18.882  INFO 6032 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization started
2018-06-02 10:08:18.940  INFO 6032 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 58 ms

9.測試成功

結束！！