问题：通过Postman访问 Jenkins api时出现访问权限问题
<html>
<head>
<meta http-equiv='refresh' content='1;url=/jenkins/login?from=%2Fjenkins%2Fapi%2Fjson'/>
<script>window.location.replace('/jenkins/login?from=%2Fjenkins%2Fapi%2Fjson');</script>
</head>
<body style='background-color:white; color:white;'>
Authentication required
<!--
You are authenticated as: anonymous
Groups that you are in:
Permission you need to have (but didn't): hudson.model.Hudson.Read
... which is implied by: hudson.security.Permission.GenericRead
... which is implied by: hudson.model.Hudson.Administer
-->
</body>
</html>
解决方法：Jenkins 系统设置中设置未授权用户可以读访问。
然后Apply后，再次通过Postman访问可以正常访问