Not able to get authentication token on Postman - spring

Question

I am trying to learn Spring security using JWT method. While doing this there is no error in program, but I am not getting token on my Postman client.
Here is my code:
( here I am not dealing with any database, so created fake username and password )
#Service
public class CustomUserDetailsService implements UserDetailsService {
#Override
public UserDetails loadUserByUsername(String userName) throws UsernameNotFoundException {
if(userName.equals("foo"))
return new User("foo", "foo" , new ArrayList<>());
else
throw new UsernameNotFoundException("User Not Found");
}
}
(Controller code )
public class JwtController {
#Autowired
private AuthenticationManager authenticationManager;
#Autowired
private CustomUserDetailsService customUserDetailsService;
#Autowired
private JwtUtil jwtutil;
#RequestMapping(value = "/token" , method = RequestMethod.POST)
public ResponseEntity<?> generateToken(#RequestBody JwtRequest jwtRequest ) throws Exception
{
System.out.println(jwtRequest);
try
{
this.authenticationManager.authenticate(
new UsernamePasswordAuthenticationToken(jwtRequest.getUsername()
, jwtRequest.getPassword()));
}
catch(UsernameNotFoundException e)
{
e.printStackTrace();
throw new Exception("Bad Credentials");
}
UserDetails userDetails = this.customUserDetailsService.loadUserByUsername(jwtRequest.getUsername());
String token = this.jwtutil.generateToken(userDetails);
System.out.println("JWT Token "+ token);
// Now we want to send this token back to client
return ResponseEntity.ok(new JwtResponse(token));
}
}
(Configuration code )
#Configuration
#EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter
{
#Autowired
private CustomUserDetailsService customUserDetailsService;
#Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(customUserDetailsService);
}
#Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().disable().cors().disable().authorizeRequests().antMatchers("/token")
.permitAll().anyRequest().authenticated()
.and().sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
}
#Bean
public AuthenticationManager authenticationManagerBean() throws Exception
{
return super.authenticationManagerBean();
}
#Bean
public PasswordEncoder passwordEncoder()
{
return NoOpPasswordEncoder.getInstance();
}
}
(Jwt Request and response )
public class JwtRequest {
private String username;
private String password;
// getters and setters and constructors
}
public class JwtResponse {
String token;
// getters and setters and constructors
}
Jwtutil class code I have copied from
JwtUtil.java
Postman request
{
"username": "foo",
"password": "foo"
}
Postman response
{
"timestamp": "2021-03-20T05:21:01.251+00:00",
"status": 404,
"error": "Not Found",
"message": "No message available",
"path": "/token"
}
Where am I wrong ? Could anyone help me ?

Answer 1

You have to add #RestController to your JwtController class to make it available :)