How to use the encode method in Spring Boot?

In Spring Boot, you can use an implementation of the PasswordEncoder interface to perform encoding operations. Usually, you can inject the PasswordEncoder implementation into the application using the @Bean annotation, and then call the encode method of the PasswordEncoder where encryption is needed. Here is an example code:

Firstly, the implementation class of the password encoder needs to be configured in the application.properties file, for example, BCryptPasswordEncoder.

spring.security.user.passwordEncoder=bcrypt

Next, inject the implementation class of PasswordEncoder in the configuration class.

@Configuration
public class PasswordEncoderConfig {
    
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
}

Finally, call the encode method of PasswordEncoder to encrypt the password where necessary.

@Autowired
private PasswordEncoder passwordEncoder;

public void encryptPassword(String password) {
    String encryptedPassword = passwordEncoder.encode(password);
    System.out.println("Encrypted password: " + encryptedPassword);
}

This way, you can use the PasswordEncoder implementation class in Spring Boot to encrypt passwords.