### 注入一个密码编码器
```java
@Configuration
public class PasswordEncoderConfig {
@Bean
public PasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}
}
```
### 实现UserDetailsService接口
```java
@Service
public class MyUserDetailsService implements UserDetailsService {
@Autowired
private PasswordEncoder passwordEncoder;
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
return new User("user",
passwordEncoder.encode("user"),
Arrays.asList(new SimpleGrantedAuthority("ROLE_USER")));
}
}
```
##### 再次启动项目并访问http://www.zhangpn.com/hello。
