报错：Handler dispatch failed； nested exception is java.lang.StackOverflowError

接下来的报错信息是：

at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:201) ~[spring-security-core-5.7.1.jar:5.7.1]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter$AuthenticationManagerDelegator.authenticate(WebSecurityConfigurerAdapter.java:514) ~[spring-security-config-5.7.1.jar:5.7.1]
	at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:201) ~[spring-security-core-5.7.1.jar:5.7.1]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter$AuthenticationManagerDelegator.authenticate(WebSecurityConfigurerAdapter.java:514) ~[spring-security-config-5.7.1.jar:5.7.1]
	at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:201) ~[spring-security-core-5.7.1.jar:5.7.1]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter$AuthenticationManagerDelegator.authenticate(WebSecurityConfigurerAdapter.java:514) ~[spring-security-config-5.7.1.jar:5.7.1]
	at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:201) ~[spring-security-core-5.7.1.jar:5.7.1]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter$AuthenticationManagerDelegator.authenticate(WebSecurityConfigurerAdapter.java:514) ~[spring-security-config-5.7.1.jar:5.7.1]
	at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:201) ~[spring-security-core-5.7.1.jar:5.7.1]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter$AuthenticationManagerDelegator.authenticate(WebSecurityConfigurerAdapter.java:514) ~[spring-security-config-5.7.1.jar:5.7.1]
	at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:201) ~[spring-security-core-5.7.1.jar:5.7.1]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter$AuthenticationManagerDelegator.authenticate(WebSecurityConfigurerAdapter.java:514) ~[spring-security-config-5.7.1.jar:5.7.1]
	at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:201) ~[spring-security-core-5.7.1.jar:5.7.1]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter$AuthenticationManagerDelegator.authenticate(WebSecurityConfigurerAdapter.java:514) ~[spring-security-config-5.7.1.jar:5.7.1]
	at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:201) ~[spring-security-core-5.7.1.jar:5.7.1]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter$AuthenticationManagerDelegator.authenticate(WebSecurityConfigurerAdapter.java:514) ~[spring-security-config-5.7.1.jar:5.7.1]
	at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:201) ~[spring-security-core-5.7.1.jar:5.7.1]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter$AuthenticationManagerDelegator.authenticate(WebSecurityConfigurerAdapter.java:514) ~[spring-security-config-5.7.1.jar:5.7.1]

解决方法：
去到SecurityConfig.java文件中
将

修改为