SpringBoot-01-之初体验

@RestController 
public class HelloSpringBoot {
    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    public String say() {
        return "HelloSpringBoot";
    }
}

@RestController
public class HelloSpringBoot {
    @GetMapping("/hello")
    public String say() {
        return "HelloSpringBoot!";
    }
}

@RestController：处理http请求:等同于@Controller+@ResponseBody
@RequestMapping: 请求的相关参数、url映射 value = "访问的路由" method = 请求方法
@GetMapping：以GET方式请求 相当于对@RequestMapping配置的缩写

@RestController
@RequestMapping(value = "/hello")
public class HelloSpringBoot {
     @GetMapping("/say")
    public String say() {
        return "HelloSpringBoot!!";
    }
}

@RestController
public class HelloSpringBoot {
    @GetMapping({"/hello", "/hi"})
    public String say() {
        return "HelloSpringBoot!!!";
    }
}

#修改端口号
server.port=8081
#端口号后需额外添加字符
server.servlet.context-path=/toly01

@RestController
public class HelloSpringBoot {
    @GetMapping("/hello")
    public String say() {
        return "HelloSpringBoot!";
    }
}

server:
  port: 8081
  servlet:
    context-path: /springboot

server:
  port: 8081

server:
  port: 8080

spring:
  profiles:
    active: prod