There is no PasswordEncoder mapped for the id "null"'错误的解决方式

解决方式：自定义加密方式，实现PasswordEncoder接口

 

修改前：

 @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
                .withUser("yrc").password("111").roles("USER")
                .and()
                .withUser("tx").password("222").roles("USER");
    }
   

 

修改后：此处使用明文，其实就是不加密

　　（1）加密类

import org.springframework.security.crypto.password.PasswordEncoder;

/*
设置用户信息明文传输
 */
public class MyPasswordEncoder implements PasswordEncoder {
    @Override
    public String encode(CharSequence charSequence) {
        return charSequence.toString();
    }

    @Override
    public boolean matches(CharSequence charSequence, String s) {
        return s.equals(charSequence.toString());
    }
}

　　（2）

 @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
                .passwordEncoder(new MyPasswordEncoder())
                .withUser("yrc").password("111").roles("USER")
                .and()
                .withUser("tx").password("222").roles("USER");
    }