修改了jdbc连接url和部署端口

src/main/resources/application.yml

@@ -1,7 +1,7 @@
 spring:
   datasource:
     driver-class-name: com.mysql.cj.jdbc.Driver
-    url: jdbc:postgresql://wuyize.ml:3306/db_project_management?useUnicode=true&characterEncoding=utf-8
+    url: jdbc:mysql://wuyize.ml:3306/db_project_management?useUnicode=true&characterEncoding=utf-8
     type: com.alibaba.druid.pool.DruidDataSource
     username: rmdjzz_root
     password: rmdjzz2020
@@ -23,6 +23,7 @@ mybatis-plus:
   configuration:
     log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
 server:
+  port: 8081
   tomcat:
     uri-encoding: UTF-8
   servlet: