tomcat安装目录中找到conf文件夹
server.xml文件中找到
 
<Connector
port="80"               maxHttpHeaderSize="8192"
               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
               enableLookups="false" redirectPort="8443" acceptCount="100"
               connectionTimeout="20000" disableUploadTimeout="true" />port改成你要的端口