symphony 启动报端口占用

大家好朋友们！我正在搭建 symphony 系统
我 latke.properties 的配置修改如下

# Browser visit protocol
serverScheme=http
# Browser visit domain name
serverHost=localhost
# Browser visit port, 80 as usual, THIS IS NOT SERVER LISTEN PORT!
serverPort=8082

通过：java -cp "WEB-INF/lib/*:WEB-INF/classes" org.b3log.symphony.Starter，启动，还是报错：
[ERROR]-[2019-09-23 14:59:04]-[org.b3log.symphony.Starter:195]: Server start failed
java.io.IOException: Failed to bind to 0.0.0.0/0.0.0.0:8080
at org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:346)
at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:308)
at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80)
at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:236)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.server.Server.doStart(Server.java:394)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.b3log.symphony.Starter.main(Starter.java:193)
Caused by: java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:342)
... 7 more

请问，我要去哪里修改端口呢？