Spring Boot CLI——centos7
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Spring Boot是一个命令行工具，用于使用Spring进行快速原型搭建。它允许你运行Groovy脚本，这意味着你可以使用类Java的语法，并且没有那么多的模板代码。
所有版本下载地址
这里下载的版本spring-boot-cli-2.2.0.BUILD-20190222.193142-143-bin.tar.gz
下载完成后解压
tar spring-boot-cli-2.2.0.BUILD-20190222.193142-143-bin.tar.gz -C /home/maxzhao/ cd /home/maxzhao mv spring-2.2.0.BUILD-SNAPSHOT spring-2.2.0-cli cd spring-2.2.0-cli
当前目录下有INSTALL.txt文件，这里面就是具体的安装方法。
INSTALL.txt文件中讲的很清楚了，spring-boot-cli-2.2.0 需要JDK1.8+
环境变量配置：
# 管理员下 # set springboot-cli vim /etc/profile #最后输入 export SPRING_HOME="/home/maxzhao/soft/spring-2.2.0-cli" export PATH="$SPRING_HOME/bin:$PATH" #保存 source /etc/profile spring --version # Spring CLI v2.2.0.BUILD-SNAPSHOT
简单的springboot-cli例子
运行Groovy脚本
在完成了Spring Boot CLI的安装之后，我们来试试使用它来快速的构建一个Spring Boot应用，方法很简单，只需要如下操作：
第一步：新建一个Groovy脚本，hello.groovy，内容如下：
@RestController class ThisWillActuallyRun @RequestMapping("/") String home() "Hello World!"
第二步：使用spring命令运行该Groovy脚本，具体如下：
$ spring run hello.groovy Resolving dependencies............................................... *::::::::::::::* :::::::::::::::::::::::::: :::::::::::::::::::::::::::::::: :. *::::::::::::::::::::::::::::::::::::: :*: ::::::::::::::::::::::::::::::::::::::::::: *: .:::::::::::::::::::::::::::::::::::::::::: : ::::::::::::::::::::::::::::::::::::::::::. .: ::::::::::::::::::::::::::::::::::::::::: : :::::::::::::::::::::::::::::::::::::: *: :::::::::::::::::::::::::::::::::* : :::::::::::::::::::* : ::::::::::::::: * *: .:::::::::::: * .: :::::::::::. : : :::::::::: : .: :::::::::: :: .: .:::::::: ::: :* :::::::: ::: : :::::::: :::: :: ::::::: ::::: *: ::::::: *::::::: :: :::::::. ::::::::::: ::: :::::::::::::::::::::::* :::: .::: :::::::::* .:::::* : :::::::::::::::::::::::::::::::::::: . .::::::::::::::::::::::::::::::::::: :::::::::::::::::::::::::::::::: :::::::::::::::::::::::::: *::::::::::::::* 2018-04-04 18:11:20.571 INFO 70477 --- [ runner-0] o.s.boot.SpringApplication : Starting application on zhaiyongchaodeMacBook-Pro.local with PID 70477 (started by zhaiyongchao in /Users/zhaiyongchao/Downloads) 2018-04-04 18:11:20.574 INFO 70477 --- [ runner-0] o.s.boot.SpringApplication : No active profile set, falling back to default profiles: default 2018-04-04 18:11:20.732 INFO 70477 --- [ runner-0] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@3c3ad454: startup date [Wed Apr 04 18:11:20 CST 2018]; root of context hierarchy 2018-04-04 18:11:21.758 INFO 70477 --- [ runner-0] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http) 2018-04-04 18:11:21.783 INFO 70477 --- [ runner-0] o.apache.catalina.core.StandardService : Starting service [Tomcat] 2018-04-04 18:11:21.784 INFO 70477 --- [ runner-0] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.28 2018-04-04 18:11:21.795 INFO 70477 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [/Users/zhaiyongchao/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.] 2018-04-04 18:11:21.849 INFO 70477 --- [ost-startStop-1] org.apache.catalina.loader.WebappLoader : Unknown loader org.springframework.boot.cli.compiler.ExtendedGroovyClassLoader$DefaultScopeParentClassLoader@5e3b901 class org.springframework.boot.cli.compiler.ExtendedGroovyClassLoader$DefaultScopeParentClassLoader 2018-04-04 18:11:21.884 INFO 70477 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext 2018-04-04 18:11:21.885 INFO 70477 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1153 ms 2018-04-04 18:11:22.042 INFO 70477 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Servlet dispatcherServlet mapped to [/] 2018-04-04 18:11:22.049 INFO 70477 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘characterEncodingFilter‘ to: [/*] 2018-04-04 18:11:22.049 INFO 70477 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘hiddenHttpMethodFilter‘ to: [/*] 2018-04-04 18:11:22.049 INFO 70477 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘httpPutFormContentFilter‘ to: [/*] 2018-04-04 18:11:22.049 INFO 70477 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘requestContextFilter‘ to: [/*] 2018-04-04 18:11:22.391 INFO 70477 --- [ runner-0] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@3c3ad454: startup date [Wed Apr 04 18:11:20 CST 2018]; root of context hierarchy 2018-04-04 18:11:22.489 INFO 70477 --- [ runner-0] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "[/]" onto public java.lang.String ThisWillActuallyRun.home() 2018-04-04 18:11:22.495 INFO 70477 --- [ runner-0] 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) 2018-04-04 18:11:22.496 INFO 70477 --- [ runner-0] 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) 2018-04-04 18:11:22.550 INFO 70477 --- [ runner-0] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2018-04-04 18:11:22.550 INFO 70477 --- [ runner-0] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2018-04-04 18:11:22.598 INFO 70477 --- [ runner-0] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2018-04-04 18:11:22.955 INFO 70477 --- [ runner-0] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup 2018-04-04 18:11:23.004 INFO 70477 --- [ runner-0] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ‘‘ 2018-04-04 18:11:23.010 INFO 70477 --- [ runner-0] o.s.boot.SpringApplication
从日志中我们可以看到我们通过Groovy脚本定义的一个简单web应用就构建成功了，可以通过访问localhost:8080来验证一下上面应用提供的接口：
$ curl localhost:8080 Hello World!
可以在命令中附加spring配置参数，注意要多加一个--
$ spring run hello.groovy -- --server.port=9000
要设置JVM参数，可以使用JAVA_OPTS环境变量，比如：
$ JAVA_OPTS=-Xmx1024m spring run hello.groovy
初始化新项目
使用init命令可以创建一个新的项目。如：
$ spring init --dependencies=web,data-jpa my-project
这个命令会创建一个名为my-project的目录，在其中包含一个基于Maven的项目，并添加对于spring-boot-starter-web和spring-boot-starter-data-jpa的依赖。
你可以使用--list标记来显示所有可用的依赖。
$ spring init --list
运行spring help init可以查看具体的使用说明。
如下的命令会创建一个基于Gradle和java8的打包类型为war的项目。
$ spring init --build=gradle --java-version=1.8 --dependencies=websocket --packaging=war sample-app.zip
使用Spring Shell
Spring Boot CLI内置了一个shell，执行spring shell即可启动。这个shell支持ANSI彩色输出和tab键，如果要执行原生命令，在命令前加上!前缀即可。更多具体使用方法，可以在进入shell后输入help查看。
更多资料
可以在这里找到更多的groovy脚本例子，这里有Spring Build tool plugins相关的文档。
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