working login and register

SkuciSe/src/main/java/com/example/SkuciSe/configuration/WebSecurityConfig.java

+package com.example.SkuciSe.configuration;
+
+import com.example.SkuciSe.model.korisnik.KorisnikDetailsService;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
+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.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+
+@Configuration
+@EnableWebSecurity
+public class WebSecurityConfig extends WebSecurityConfigurerAdapter
+{
+    @Bean
+    public UserDetailsService userDetailsService() {
+        return new KorisnikDetailsService();
+    }
+
+    @Bean
+    public BCryptPasswordEncoder passwordEncoder() {
+        return new BCryptPasswordEncoder();
+    }
+
+    @Bean
+    public DaoAuthenticationProvider authenticationProvider() {
+        DaoAuthenticationProvider authenticationProvider = new DaoAuthenticationProvider();
+        authenticationProvider.setUserDetailsService( this.userDetailsService());
+        authenticationProvider.setPasswordEncoder( this.passwordEncoder());
+        return authenticationProvider;
+    }
+
+    @Override
+    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
+        auth.authenticationProvider( authenticationProvider());
+    }
+
+    @Override
+    protected void configure(HttpSecurity http) throws Exception {
+        http.authorizeRequests()
+                .antMatchers("/proba").authenticated()
+                .anyRequest().permitAll()
+                .and().formLogin()
+                    .usernameParameter("email")
+                    .defaultSuccessUrl("/proba")
+                    .permitAll()
+                .and().logout().logoutSuccessUrl("/index").permitAll();
+    }
+}

SkuciSe/src/main/java/com/example/SkuciSe/controller/AppRestController.java

+package com.example.SkuciSe.controller;
+
+import com.example.SkuciSe.model.korisnik.KorisnikDetails;
+import lombok.Getter;
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class AppRestController
+{
+    @GetMapping("/proba")
+    public String proba(@AuthenticationPrincipal KorisnikDetails korisnik)
+    {
+        return("<h1>Dobrodosao, "+korisnik.getKorisnik().getIme()+"/h1>");
+    }
+
+}

SkuciSe/src/main/java/com/example/SkuciSe/model/korisnik/KorisnikDetails.java

+package com.example.SkuciSe.model.korisnik;
+
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.userdetails.UserDetails;
+
+import java.util.Collection;
+
+public class KorisnikDetails implements UserDetails {
+    private Korisnik korisnik;
+
+    public Korisnik getKorisnik()
+    {
+        return korisnik;
+    }
+
+    public KorisnikDetails(Korisnik korisnik) {
+        this.korisnik = korisnik;
+    }
+
+    @Override
+    public Collection<? extends GrantedAuthority> getAuthorities() {
+        return null;
+    }
+
+    @Override
+    public String getPassword() {
+        return korisnik.getSifra();
+    }
+
+    @Override
+    public String getUsername() {
+        return korisnik.getEmail();
+    }
+
+    @Override
+    public boolean isAccountNonExpired() {
+        return true;
+    }
+
+    @Override
+    public boolean isAccountNonLocked() {
+        return true;
+    }
+
+    @Override
+    public boolean isCredentialsNonExpired() {
+        return true;
+    }
+
+    @Override
+    public boolean isEnabled() {
+        return true;
+    }
+}

SkuciSe/src/main/java/com/example/SkuciSe/model/korisnik/KorisnikDetailsService.java

+package com.example.SkuciSe.model.korisnik;
+
+import com.example.SkuciSe.repository.KorisnikRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
+
+public class KorisnikDetailsService implements UserDetailsService
+{
+    @Autowired
+    KorisnikRepository kRepo;
+
+    @Override
+    public UserDetails loadUserByUsername(String email) throws UsernameNotFoundException {
+        Korisnik korisnik = kRepo.findByEmail(email);
+        System.out.println( korisnik.toString());
+        if (korisnik != null)
+        {
+            return new KorisnikDetails( korisnik);
+        }
+        return null;
+    }
+}