weblogic.security.SecurityInitializationException: Authentication denied: Boot

weblogic.security.SecurityInitializationException: Authentication denied: Boot identity not valid; The user name and/or password from the boot identity file (boot.properties) is not valid. The boot identity may have been changed since the boot identity file was created. Please edit and update the boot identity file with the proper values of username and password. The first time the updated boot identity file is used to start the server, these new values are encrypted.
at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.doBootAuthorization(Unknown Source)
at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.initialize(Unknown Source)
at weblogic.security.service.SecurityServiceManager.initialize(Unknown Source)
at weblogic.security.SecurityService.start(SecurityService.java:141)
at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
Truncated. see log file for complete stacktrace










在运行weblogic 的时候抛出了这个异常，再网络上找资料发现，原来是weblogic 的用户名和密码错误。  认真检查了后发现确实是因为用户名写错了，更正后重新运行，异常消失。

更正用户名和密码的地方：选择MyEclipse的Window导航->在弹出的Preferences窗口中选择MyEclipse->选择Application Servers->选择WebLogic8在右边出现的窗口中填写正确的用户名Admin username和密码Admin password。


如果用户名和密码忘记了，要么拷贝一套正确的用户名和密码到boot.properties中
或是重新配置一个domain。