用idea写一个springboot的小demo(手动添加依赖)

╰半橙微兮° 2022-02-01 11:39 418阅读 0赞

## 1 创建一个maven项目 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 1]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 2]

## 2.添加pom.xml的依赖 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 3]

<parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.5.9.RELEASE</version>
        </parent>
    
        <dependencies>
    
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
        </dependencies>

## 3.编写一个springboot启动类 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 4]

package com.yt;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    /**
     * @SpringBootApplication 来标注一个主程序类,说明这是一个springboot应用
     */
    @SpringBootApplication
    public class HelloWorldApplication {
    
        public static void main(String[] args) {
    
            //spring应用启动起来
            SpringApplication.run(HelloWorldApplication.class,args);
    
        }
    
    }

## 4.编写一个controller ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 5]

package com.yt.controller;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    @Controller
    public class HelloController {
    
        @ResponseBody
        @RequestMapping("/hello")
        public String hello(){
             return "hello yt";
        }
    
    }

## 5.run 运行启动类 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 6]

## 6.测试:[http://localhost:8080/hello][http_localhost_8080_hello] ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 7]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70]: /images/20220201/05051502803349be8e9363c3ff407beb.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 1]: /images/20220201/a30faf70a1bb4b1c85f56a19c5aa4938.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 2]: /images/20220201/7d0c038d485a49d2aa9b6e2af03b5ccc.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 3]: /images/20220201/12c5bf3d44e44e56a39118e647553178.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 4]: /images/20220201/8334d0ae66c1483484ba4dd0ffc5c069.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 5]: /images/20220201/da5646a642c84a09a8ba12342f5d9d55.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 6]: /images/20220201/4bcf3f1887e041c0b15ee2f5549e9fc5.png
[http_localhost_8080_hello]: http://localhost:8080/hello
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 7]: /images/20220201/6eebccef35b24e60903e7655585290bb.png