# Web server failed to start. Port 9793 was already in use

全栈程序员2023-10-14 0:36

Web server failed to start. Port 9793 was already in use.

文章目录

[Web server failed to start. Port 9793 was already in use.](#Web server failed to start. Port 9793 was already in use.)
- 报错描述
- 报错原因
- 解决方法
- - [Spring Boot 修改默认端口号](#Spring Boot 修改默认端口号)
  - 关闭占用某一端口号的进程
  - - 关闭该进程

报错描述

Springboot项目启动控制台报错

bash 复制代码

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2023-10-12 09:55:44.462 ERROR 25112 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Web server failed to start. Port 9793 was already in use.

Action:

Identify and stop the process that's listening on port 9793 or configure this application to listen on another port.

Disconnected from the target VM, address: '127.0.0.1:3187', transport: 'socket'

Process finished with exit code 1

报错原因

端口被占用

解决方法

Spring Boot 修改默认端口号

修改yml或者properties配置文件，加上参数：

yaml 复制代码

# properties 方式
server.port=8014

# yaml 方式
server:
  port: 8881

注意启动成功后面，后端的端口号变为 8881 了

关闭占用某一端口号的进程

使用cmd命令查看端口号占用情况，例如查看端口 8881，可以看出进程号为18644；

bash 复制代码

netstat -ano | findstr 端口号

关闭该进程

方法一：使用任务管理器关闭：菜单栏 -> 右键 - > 任务管理器 -> 详细信息，根据PID排序找到PID为18644的进程，选择后点击结束任务

方法二：使用命令关闭

r 复制代码

taskkill -PID 18644 -F