在自己电脑上的jenkins，有一段时间没有登录，jenkins 登录提示无效
<useSecurity>true</useSecurity> 修改成false
<authorizationStrategy class="hudson.security.FullControlOnceLoggedInAuthorizationStrategy">
<denyAnonymousReadAccess>true</denyAnonymousReadAccess>
</authorizationStrategy>
<securityRealm class="hudson.security.HudsonPrivateSecurityRealm">
<disableSignup>true</disableSignup>
<enableCaptcha>false</enableCaptcha>
</securityRealm>
删除 </authorizationStrategy>和</securityRealm> ，重启jenkins，重新打开jenkins即可