springboot avoid generated security password:

Avoiding Generated Security Passwords in Spring Boot

To avoid generating security passwords in Spring Boot, you can follow these steps:

Step 1: Add the Spring Security dependency

In your pom.xml file, add the Spring Security dependency to your project. This will enable you to configure and customize the security settings.

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-security</artifactId>
</dependency>

Step 2: Disable the default password generation

By default, Spring Security generates a random password during application startup. To disable this behavior, you need to create a configuration class that extends WebSecurityConfigurerAdapter and override the configure method.

@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        // configure authentication manager
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .csrf().disable()
            .authorizeRequests()
                .anyRequest().authenticated()
                .and()
            .formLogin()
                .and()
            .httpBasic();
    }
}

Step 3: Configure authentication manager

Inside the configure method of your SecurityConfig class, you can configure the authentication manager. This is where you specify how users are authenticated.

@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
    auth
        .inMemoryAuthentication()
            .withUser("user")
            .password("{noop}password") // specify the password here
            .roles("USER");
}

In the above example, we are using in-memory authentication and specifying a username and password for a user with the role "USER". The {noop} prefix tells Spring Security that the password is not encoded.

Step 4: Customize the authentication process

You can further customize the authentication process by implementing your own UserDetailsService and PasswordEncoder interfaces and configuring them in your SecurityConfig class.

@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private UserDetailsService userDetailsService;

    @Autowired
    private PasswordEncoder passwordEncoder;

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth
            .userDetailsService(userDetailsService)
            .passwordEncoder(passwordEncoder);
    }

    // other methods...
}

In the above example, we are autowiring a custom implementation of UserDetailsService and PasswordEncoder interfaces. You would need to implement these interfaces according to your own requirements.

That's it! By following these steps, you can avoid generating security passwords in Spring Boot and customize the authentication process to fit your needs.