SpringBoot是伴随着Spring4.0诞生的，旨在简化开发。
SpringBoot官方文档：http://spring.io/projects/spring-boot
写个示例：Hello SpringBoot
1、创建Maven工程
工程结构如下：
2、配置pom.xml文件
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mmzs</groupId>
<artifactId>springBoot00</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>springBoot00 Maven Webapp</name>
<url>http://maven.apache.org</url>
<parent>
<groupId>org.springframework.boot</groupId>
<!-- 一定要有spring-boot-starter-parent,其中包含了spring的各种插件版本号 -->
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</version>
<relativePath /><!-- lookup parent from repository -->
</parent>
<!-- 父类统一管理版本信息 -->
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<!-- springboot 默认java版本是1.6,这里显示给它指定为1.7 -->
<java.version>1.7</java.version>
</properties>
<dependencies>
<dependency>
<!-- 导入spring boot的web支持,可以不写版本号,在spring-boot-starter-parent已经包含 -->
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
<build>
<finalName>spring_boot</finalName>
<!-- 添加Spring boot的maven插件,可以不写版本号,在spring-boot-starter-parent已经包含 -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</build>
</project>
3、编写代码
1 package com.mmzs.springboot;
2
3 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
4 import org.springframework.web.bind.annotation.RequestMapping;
5 import org.springframework.web.bind.annotation.RequestParam;
6 import org.springframework.web.bind.annotation.ResponseBody;
7 import org.springframework.web.bind.annotation.RestController;
8 import java.util.ArrayList;
9 import java.util.HashMap;
10 import java.util.List;
11 import java.util.Map;
12
13 /**
14 * Created by mmzs 2018年4月2日 11:50:57
15 * springboot注解详解：http://www.cnblogs.com/mmzs/p/8874349.html
16 */
17 //用于标注控制层组件(如struts中的action)，@ResponseBody和@Controller的合集，
18 //这样子获取的数据返回前台时也会自动转发为json格式。
19 @RestController
20 //Spring Boot自动配置（auto-configuration）：尝试根据你添加的jar依赖自动配置你的Spring应用。
21 @EnableAutoConfiguration
22 public class HelloController {
23
24 @RequestMapping("/hello")
25 @ResponseBody //会使用详细转换器输出结果
26 public String hello() {
27 return "Hello Spring-Boot";
28 }
29
30 @RequestMapping("/info")
31 public Map<String, String> getInfo(@RequestParam String name) {
32 Map<String, String> map = new HashMap<>();
33 map.put("name", name);
34 return map;
35 }
36
37 @RequestMapping("/list")
38 public List<Map<String, String>> getList() {
39 List<Map<String, String>> list = new ArrayList<>();
40 Map<String, String> map = null;
41 for (int i = 1; i <= 5; i++) {
42 map = new HashMap<>();
43 map.put("name", "mmzs+" + i);
44 list.add(map);
45 }
46 return list;
47 }
48 }
49
HelloController
1 package com.mmzs.springboot;
2
3 import org.springframework.boot.SpringApplication;
4 import org.springframework.boot.autoconfigure.SpringBootApplication;
5
6 /**
7 * Created by mmzs 2018年4月2日 11:48:38
8 * springboot注解详解：http://www.cnblogs.com/mmzs/p/8874349.html
9 */
10 //Spring Boot项目的核心注解，主要目的是开启自动配置。
11 //包含了@ComponentScan、@Configuration和@EnableAutoConfiguration注解。
12 //其中@ComponentScan默认扫描@SpringBootApplication所在类的同级目录以及它的子目录。
13 @SpringBootApplication
14 public class Application {
15 public static void main(String[] args) {
16 SpringApplication.run(Application.class, args);
17 }
18 }
19
Application启动类
4、测试效果
运行Application类，结果如下：
. ____ _ __ _ _
/\\ / ___‘_ __ _ _(_)_ __ __ _ \ \ \ ( ( )\___ | ‘_ | ‘_| | ‘_ \/ _` | \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) )
‘ |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.2.RELEASE)
2018-07-02 12:17:03.434 INFO 5988 --- [ main] com.mmzs.springboot.Application : Starting Application on CVHOPASEHFXPHFV with PID 5988 (D:\Project\springBoot00\target\classes started by Administrator in D:\Project\springBoot00)
2018-07-02 12:17:03.442 INFO 5988 --- [ main] com.mmzs.springboot.Application : No active profile set, falling back to default profiles: default
2018-07-02 12:17:03.562 INFO 5988 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot[email protected]27fe3806: startup date [Mon Jul 02 12:17:03 CST 2018]; root of context hierarchy
2018-07-02 12:17:06.724 INFO 5988 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2018-07-02 12:17:06.751 INFO 5988 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2018-07-02 12:17:06.753 INFO 5988 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.11
2018-07-02 12:17:06.971 INFO 5988 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2018-07-02 12:17:06.972 INFO 5988 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 3415 ms
2018-07-02 12:17:07.260 INFO 5988 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: ‘dispatcherServlet‘ to [/]
2018-07-02 12:17:07.266 INFO 5988 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘characterEncodingFilter‘ to: [/*]
2018-07-02 12:17:07.267 INFO 5988 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘hiddenHttpMethodFilter‘ to: [/*]
2018-07-02 12:17:07.267 INFO 5988 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘httpPutFormContentFilter‘ to: [/*]
2018-07-02 12:17:07.267 INFO 5988 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘requestContextFilter‘ to: [/*]
2018-07-02 12:17:07.788 INFO 5988 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot[email protected]27fe3806: startup date [Mon Jul 02 12:17:03 CST 2018]; root of context hierarchy
2018-07-02 12:17:07.928 INFO 5988 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/list]}" onto public java.util.List<java.util.Map<java.lang.String, java.lang.String>> com.mmzs.springboot.HelloController.getList()
2018-07-02 12:17:07.929 INFO 5988 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/hello]}" onto public java.lang.String com.mmzs.springboot.HelloController.hello()
2018-07-02 12:17:07.931 INFO 5988 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/info]}" onto public java.util.Map<java.lang.String, java.lang.String> com.mmzs.springboot.HelloController.getInfo(java.lang.String)
2018-07-02 12:17:07.936 INFO 5988 --- [ 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)
2018-07-02 12:17:07.937 INFO 5988 --- [ 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)
2018-07-02 12:17:08.012 INFO 5988 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-02 12:17:08.013 INFO 5988 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-02 12:17:08.103 INFO 5988 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-02 12:17:08.403 INFO 5988 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2018-07-02 12:17:08.531 INFO 5988 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2018-07-02 12:17:08.538 INFO 5988 --- [ main] com.mmzs.springboot.Application : Started Application in 5.736 seconds (JVM running for 6.592)
启动成功界面
访问界面：
原文地址：https://www.cnblogs.com/mmzs/p/9253276.html
时间： 2024-08-25 07:47:40