spring: server: port=80: application: name: dtsociety-generator datasource: driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://127.0.0.1:3306/aaa?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true username: root password: 123456 修改正确其中server.port

要修改端口的话，只需要将 `server.port` 的值改为想要的端口号即可，比如将其改为 `8080`，修改后的配置文件如下所示：

spring:
  server:
    port: 8080
  application:
    name: dtsociety-generator
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/aaa?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true
    username: root
    password: 123456

修改完成后，应用会使用新的端口号启动。