出现这个问题看看tomcat的配置哦
修改tomcat /conf/ tomcat-users.xml
<tomcat-users>
<role rolename="tomcat"/>
<role rolename="role1"/>
<role rolename="manager-script"/>
<role rolename="manager-gui"/>
<role rolename="manager-status"/>
<role rolename="admin-gui"/>
<role rolename="admin-script"/>
<user username="tomcat" password="tomcat" roles="manager-gui,manager-script,tomcat,admin-gui,admin-script"/>
</tomcat-users>
重启就可以了