修改tomcat下conf中的tomcat-users.xml
只需要添加或者修改下面斜體加粗部分，然後重啓tomcat即可
<?xml version='1.0' encoding='utf-8'?>
<tomcat-users>
<role rolename="admin"/>
<user username="admin" password="admin" roles="admin,manager"/>
</tomcat-users>
<?xml version='1.0' encoding='utf-8'?>
<tomcat-users>
<role rolename="admin"/>
<user username="admin" password="admin" roles="admin,manager"/>
</tomcat-users>