Configuration error: No realms have been configured! One or more realms must be present to execute an authentication attempt.

error¶

Appeared when testing Shiro framework

Configuration error: No realms have been configured! One or more realms must be present to execute an authentication attempt.

It probably means: Configuration error: No realm is configured! One or more domains must exist to perform an authentication attempt.

After looking for a long time, some on the Internet say yes

<property name="realms">与<property name="authenticator" ref="authenticator" />

Wrong order
But it didn't solve
Finally found

@Bean
     public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm){
         DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
         //Associate UserRealm, UserRealm cannot be obtained directly at this time, skills are required
         securityManager.setRealm(userRealm);
         return new DefaultWebSecurityManager();
     }

When returning the object, I made a new new by mistake, and did not return the object passed in userRealm