在执行jenkinks时，遇到以下错误：
原因：未在tomcat/conf中的tomcat-users.xml中配置用户
解决方法：在tomcat/conf/tomcat-users.xml中添加以下代码：
<!--
<role rolename="tomcat"/>
<role rolename="role1"/>
<user username="tomcat" password="tomcat" roles="tomcat"/>
<user username="both" password="tomcat" roles="tomcat,role1"/>
<user username="role1" password="tomcat" roles="role1"/>
-->
<role rolename="admin-gui"/>
<role rolename="admin-script"/>
<role rolename="manager-gui"/>
<role rolename="manager-script"/>
<role rolename="manager-jmx"/>
<role rolename="manager-status"/>
<user username="admin" password="redhat123" roles="manager-gui,manager-script,manager-jmx,manager-status,admin-script,admin-gui"/>
</tomcat-users>