SpringBoot 快速入门

朴灿烈づ我的快乐病毒、 2022-07-11 07:22 218阅读 0赞

需求描述：使用SpringBoot编写HelloWorld入门程序

1.  新建Maven项目
2.  在pom文件中添加以下依赖

<parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.4.3.RELEASE</version>
        </parent>
    
        
        <dependencies>
            <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>

1.  创建启动类，如下：

import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    @Controller
    @EnableAutoConfiguration
    public class QuickstartApplication {
    
        @RequestMapping("/")
        @ResponseBody
        String home(){
            return "Hello World!!!";
        }
    
        public static void main(String[] args) throws Exception {
            SpringApplication.run(QuickstartApplication.class, args);
        }
    
    }

1.  测试运行  
    选中Main方法–>右键Run as –> Spring Boot App(基于Spring的sts-bundle的IDE)或者Java Application. 出现如下的日志信息且无报错信息即为启动正常。

.   ____          _            __ _ _
     /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
    ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
     \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
      ' |____| .__|_| |_|_| |_\__, | / / / /
     =========|_|==============|___/=/_/_/_/
    [32m :: Spring Boot :: [39m      [2m (v1.4.3.RELEASE)[0;39m
    
    [2m2017-01-19 09:55:45.757[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36mc.t.s.quickstart.QuickstartApplication  [0;39m [2m:[0;39m Starting QuickstartApplication on EZ-20161228YDGX with PID 8256 (D:\tyrone-workspace\tyrone-springboot-quickstart\target\classes started by Administrator in D:\tyrone-workspace\tyrone-springboot-quickstart)
    [2m2017-01-19 09:55:45.762[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36mc.t.s.quickstart.QuickstartApplication  [0;39m [2m:[0;39m No active profile set, falling back to default profiles: default
    [2m2017-01-19 09:55:45.972[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36mationConfigEmbeddedWebApplicationContext[0;39m [2m:[0;39m Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6379eb: startup date [Thu Jan 19 09:55:45 CST 2017]; root of context hierarchy
    [2m2017-01-19 09:55:48.395[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36ms.b.c.e.t.TomcatEmbeddedServletContainer[0;39m [2m:[0;39m Tomcat initialized with port(s): 8080 (http)
    [2m2017-01-19 09:55:48.411[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36mo.apache.catalina.core.StandardService  [0;39m [2m:[0;39m Starting service Tomcat
    [2m2017-01-19 09:55:48.412[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36morg.apache.catalina.core.StandardEngine [0;39m [2m:[0;39m Starting Servlet Engine: Apache Tomcat/8.5.6
    [2m2017-01-19 09:55:48.539[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[ost-startStop-1][0;39m [36mo.a.c.c.C.[Tomcat].[localhost].[/]      [0;39m [2m:[0;39m Initializing Spring embedded WebApplicationContext
    [2m2017-01-19 09:55:48.539[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[ost-startStop-1][0;39m [36mo.s.web.context.ContextLoader           [0;39m [2m:[0;39m Root WebApplicationContext: initialization completed in 2571 ms
    [2m2017-01-19 09:55:48.745[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[ost-startStop-1][0;39m [36mo.s.b.w.servlet.ServletRegistrationBean [0;39m [2m:[0;39m Mapping servlet: 'dispatcherServlet' to [/]
    [2m2017-01-19 09:55:48.751[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[ost-startStop-1][0;39m [36mo.s.b.w.servlet.FilterRegistrationBean  [0;39m [2m:[0;39m Mapping filter: 'characterEncodingFilter' to: [/*]
    [2m2017-01-19 09:55:48.752[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[ost-startStop-1][0;39m [36mo.s.b.w.servlet.FilterRegistrationBean  [0;39m [2m:[0;39m Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
    [2m2017-01-19 09:55:48.752[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[ost-startStop-1][0;39m [36mo.s.b.w.servlet.FilterRegistrationBean  [0;39m [2m:[0;39m Mapping filter: 'httpPutFormContentFilter' to: [/*]
    [2m2017-01-19 09:55:48.752[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[ost-startStop-1][0;39m [36mo.s.b.w.servlet.FilterRegistrationBean  [0;39m [2m:[0;39m Mapping filter: 'requestContextFilter' to: [/*]
    [2m2017-01-19 09:55:49.191[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36ms.w.s.m.m.a.RequestMappingHandlerAdapter[0;39m [2m:[0;39m Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6379eb: startup date [Thu Jan 19 09:55:45 CST 2017]; root of context hierarchy
    [2m2017-01-19 09:55:49.503[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36ms.w.s.m.m.a.RequestMappingHandlerMapping[0;39m [2m:[0;39m Mapped "{[/]}" onto java.lang.String cn.tyrone.springboot.quickstart.QuickstartApplication.home()
    [2m2017-01-19 09:55:49.509[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36ms.w.s.m.m.a.RequestMappingHandlerMapping[0;39m [2m:[0;39m 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)
    [2m2017-01-19 09:55:49.509[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36ms.w.s.m.m.a.RequestMappingHandlerMapping[0;39m [2m:[0;39m 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)
    [2m2017-01-19 09:55:49.554[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36mo.s.w.s.handler.SimpleUrlHandlerMapping [0;39m [2m:[0;39m Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
    [2m2017-01-19 09:55:49.554[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36mo.s.w.s.handler.SimpleUrlHandlerMapping [0;39m [2m:[0;39m Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
    [2m2017-01-19 09:55:49.605[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36mo.s.w.s.handler.SimpleUrlHandlerMapping [0;39m [2m:[0;39m Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
    [2m2017-01-19 09:55:49.853[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36mo.s.j.e.a.AnnotationMBeanExporter       [0;39m [2m:[0;39m Registering beans for JMX exposure on startup
    [2m2017-01-19 09:55:49.942[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36ms.b.c.e.t.TomcatEmbeddedServletContainer[0;39m [2m:[0;39m Tomcat started on port(s): 8080 (http)
    [2m2017-01-19 09:55:49.948[0;39m [32m INFO[0;39m [35m8256[0;39m [2m---[0;39m [2m[           main][0;39m [36mc.t.s.quickstart.QuickstartApplication  [0;39m [2m:[0;39m Started QuickstartApplication in 5.044 seconds (JVM running for 6.027)

1.  列表内容  
    打开浏览器，输入[http://localhost:8080/][http_localhost_8080]进行验证。  
    若浏览器打印出启动类中的结果“Hello World”即正常。
2.  参考链接：  
    [http://projects.spring.io/spring-boot/][http_projects.spring.io_spring-boot]  
    可能会遇到的问题:  
    [http://blog.csdn.net/mynameissls/article/details/54603148][http_blog.csdn.net_mynameissls_article_details_54603148]

[http_localhost_8080]: http://localhost:8080/
[http_projects.spring.io_spring-boot]: http://projects.spring.io/spring-boot/
[http_blog.csdn.net_mynameissls_article_details_54603148]: http://blog.csdn.net/mynameissls/article/details/54603148