Безбедност

package com.example.bankapp.config;

import com.example.bankapp.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;

@Configuration
@EnableWebSecurity
public class SecurityConfig {

    @Autowired
    AccountService accountService;

    @Bean
    public static PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Bean
    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
        http
                .csrf(csrf -> csrf.disable())
                .authorizeHttpRequests(authz -> authz
                        .requestMatchers("/register").permitAll()
                        .anyRequest().authenticated()
                )
                .formLogin(form -> form
                        .loginPage("/login")
                        .loginProcessingUrl("/login")
                        .defaultSuccessUrl("/dashboard", true)
                        .permitAll()
                )
                .logout(logout -> logout
                        .invalidateHttpSession(true)
                        .clearAuthentication(true)
                        .logoutRequestMatcher(new AntPathRequestMatcher("/logout"))
                        .logoutSuccessUrl("/login?logout")
                        .permitAll()
                )
                .headers(headers -> headers
                        .frameOptions(frameOptions -> frameOptions.sameOrigin())
                );

        return http.build();
    }

    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(accountService).passwordEncoder(passwordEncoder());

    }
}

• protects against unauthorized access
• clickjacking
• weak password storage
• session-related issues

package com.example.bankapp.repository;

import com.example.bankapp.model.Account;
import org.springframework.data.jpa.repository.JpaRepository;

import java.util.Optional;


public interface AccountRepository extends JpaRepository<Account, Long> {
    Optional<Account> findByUsername(String username);
}

package com.example.bankapp.repository;

import com.example.bankapp.model.Transaction;
import org.springframework.data.jpa.repository.JpaRepository;

import java.util.List;

public interface TransactionRepository extends JpaRepository<Transaction, Long> {
    List<Transaction> findByAccountId(Long accountId);
}

• отпорност на SQL injection заради користење на Spring Data JPA.