SpringBoot写第一个接口

服务可以理解为一个接口,一个controller,一个做业务请求的

      

       新建一个HelloWorldController

 

 1 import org.springframework.boot.SpringApplication;
 2 
 3 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 4 
 5 import org.springframework.web.bind.annotation.RequestMapping;
 6 
 7 import org.springframework.web.bind.annotation.RestController;
 8 
 9 
10 
11 import java.util.HashMap;
12 
13 import java.util.Map;
14 
15 
16 @EnableAutoConfiguration//做spring的注容器,创建tomcat,开spring的加载,然后类就都可以使用了
17 
18 //@RestController 表示该接口全部返回json格式  相当于下面写了一个@ResponseBody
19 
20 @RestController
21 
22 public class HelloWorldController {
23 
24 //    @ResponseBody
25 
26     @RequestMapping("/index")
27 
28     public String index(){
29 
30         return "success";
31 
32     }
33 
34 
35 
36     @RequestMapping("/getMap")
37 
38     public Map<String , Object> getMap(){
39 
40         Map<String , Object> result = new HashMap<String , Object>();
41 
42         result.put("errorCode","200");
43 
44         result.put("errorMsg","成功");
45 
46         return result;
47 
48     }
49 
50     public static void main(String[] args){   //这个函数只运行这一个java文件,因为加入这个@EnableAutoConfiguration注解后默认只扫当前,其他的不访问
51         //主函數運行springboot項目 (主入口)    springboot核心是嵌入Tomcat,但是需要运行,而运行需要一个入口,这个就相当于一个入口
52 
53         SpringApplication.run(HelloWorldController.class, args);
54 
55     }
56 
57 }

然后点击左边的三角号运行

 

 

当出现这种情况就可以了

  

然后在浏览器输入http://localhost:8080/index

 

 

输入http://localhost:8080/getMap因为是map集合所以是一个json格式

 

 1 Pom.xml文件,在这里我用的war
 2 
 3 <?xml version="1.0" encoding="UTF-8"?>
 4 
 5 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 6   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 7   <modelVersion>4.0.0</modelVersion>
 8 
 9   <groupId>com.itmayiedu</groupId>
10   <artifactId>springboot1</artifactId>
11   <version>1.0-SNAPSHOT</version>
12   <packaging>war</packaging>
13 
14   <name>springboot1 Maven Webapp</name>
15   <!-- FIXME change it to the project's website -->
16   <url>http://www.example.com</url>
17 
18   <properties>
19     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
20     <maven.compiler.source>1.7</maven.compiler.source>
21     <maven.compiler.target>1.7</maven.compiler.target>
22   </properties>
23 
24        
25 
26 <!—引入springboot父类依赖-->
27     <parent>
28         <groupId>org.springframework.boot</groupId>
29         <artifactId>spring-boot-starter-parent</artifactId>
30         <version>1.3.3.RELEASE</version>
31     </parent>
32 <!—springboot-web组件 springmvc+spring+mybatis-->
33   <dependencies>
34     <dependency>
35       <groupId>junit</groupId>
36       <artifactId>junit</artifactId>
37       <version>4.11</version>
38       <scope>test</scope>
39     </dependency>
40       <dependency>
41           <groupId>org.springframework.boot</groupId>
42           <artifactId>spring-boot-starter-web</artifactId>
43       </dependency>
44   </dependencies>
45 
46 <!—这个build中的东西一件出来就有了,具体不大清楚,希望哪位大佬看到帮忙解释下,万分感谢!!!-->
47   <build>
48     <finalName>springboot1</finalName>
49     <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
50       <plugins>
51         <plugin>
52           <artifactId>maven-clean-plugin</artifactId>
53           <version>3.0.0</version>
54         </plugin>
55         <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
56         <plugin>
57           <artifactId>maven-resources-plugin</artifactId>
58           <version>3.0.2</version>
59         </plugin>
60         <plugin>
61           <artifactId>maven-compiler-plugin</artifactId>
62           <version>3.7.0</version>
63         </plugin>
64         <plugin>
65           <artifactId>maven-surefire-plugin</artifactId>
66           <version>2.20.1</version>
67         </plugin>
68         <plugin>
69           <artifactId>maven-war-plugin</artifactId>
70           <version>3.2.0</version>
71         </plugin>
72         <plugin>
73           <artifactId>maven-install-plugin</artifactId>
74           <version>2.5.2</version>
75         </plugin>
76         <plugin>
77           <artifactId>maven-deploy-plugin</artifactId>
78           <version>2.8.2</version>
79         </plugin>
80       </plugins>
81     </pluginManagement>
82   </build>
83 </project>

 

posted @ 2018-05-02 10:49  丿love丶暗影  Views(5937)  Comments(0Edit  收藏  举报