Package com.mindstore.backend.service

Class JwtService

java.lang.Object

com.mindstore.backend.service.JwtService

@Service
public class JwtService
extends Object

service class for jwt token

Constructor Summary

Constructors

Constructor	Description
JwtService()	Default constructor.

Method Summary

Modifier and Type	Method	Description
<T> T	extractClaim(String token, Function<io.jsonwebtoken.Claims,T> claimsResolver)	function: extract claim from token
Date	extractExpiration(String token)	function: returns expiration from token
String	extractUsername(String token)	function: get the username, used in the jwtAuthenticationFilter
String	generateToken(Map<String,Object> extraClaims, org.springframework.security.core.userdetails.UserDetails userDetails)	function: generate token
String	generateToken(Map<String,Object> extraClaims, org.springframework.security.core.userdetails.UserDetails userDetails, Long expiration)	function: generate token
String	generateToken(org.springframework.security.core.userdetails.UserDetails userDetails)	function: generates token
long	getExpirationTime()	function: used for the /auth/check controller method
boolean	isTokenValid(String token, org.springframework.security.core.userdetails.UserDetails userDetails)	function: check token validity

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

JwtService

public JwtService()

Default constructor.

Method Details

extractUsername

public String extractUsername(String token)

function: get the username, used in the jwtAuthenticationFilter

Parameters:

token - in string format

Returns:

the claim (info about the jwt token)

extractClaim

public <T> T extractClaim(String token,
 Function<io.jsonwebtoken.Claims,T> claimsResolver)

function: extract claim from token

Type Parameters:

T - type of claim

Parameters:

token - the JWT token that we extract the claim from

claimsResolver - - a function that resolves the claim

Returns:

the extracted claim

generateToken

public String generateToken(org.springframework.security.core.userdetails.UserDetails userDetails)

function: generates token

Parameters:

userDetails - details to include in the token

Returns:

the generated token

generateToken

public String generateToken(Map<String,Object> extraClaims,
 org.springframework.security.core.userdetails.UserDetails userDetails)

function: generate token

Parameters:

extraClaims - additional claims to include

userDetails - - the userDetails for the token

Returns:

the generated token

generateToken

public String generateToken(Map<String,Object> extraClaims,
 org.springframework.security.core.userdetails.UserDetails userDetails,
 Long expiration)

function: generate token

Parameters:

extraClaims - additional claims to include

userDetails - the userDetails for the token

expiration - expiration time in miliseconds

Returns:

the generated token

getExpirationTime

public long getExpirationTime()

function: used for the /auth/check controller method

Returns:

the remaining time until expiration

isTokenValid

public boolean isTokenValid(String token,
 org.springframework.security.core.userdetails.UserDetails userDetails)

function: check token validity

Parameters:

token - - the token that needs validation

userDetails - the userDetails that we expect the token to have

Returns:

true if the token is valid and not expired --> else false

extractExpiration

public Date extractExpiration(String token)

function: returns expiration from token

Parameters:

token - the token we are checking

Returns:

the expiration date