Spring Security 无法登陆，报错：There is no PasswordEncoder mapped for the id “null”

Spring Security 无法登陆，报如下错误！

 auth.inMemoryAuthentication()
                .withUser("java1234")
                .password("123456")
                .roles("ADMIN");

使用如下代码就解决ok！

auth.inMemoryAuthentication().passwordEncoder(new BCryptPasswordEncoder()).withUser("java1234").password(new BCryptPasswordEncoder().encode("123456")).roles("ADMIN");

 

参考自：https://blog.csdn.net/canon_in_d_major/article/details/79675033