Não vi esta explicação, mas segui exemplos que vi funcionando por vídeo e códigos fontes liberados.
Mas analisando este link me passou.
Tenho as depedencias 2.x, do jackson:
<jackson-core.version>2.9.4</jackson-core.version>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson-core.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.module</groupId>
<artifactId>jackson-module-jaxb-annotations</artifactId>
<version>2.8.4</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson-core.version}</version>
</dependency>
Para gerar o token utilizo este metodo:
private String doGenerateToken(Map<String, Object> claims, String subject) {
final Date createdDate = clock.now();
final Date expirationDate = calculateExpirationDate(createdDate);
return Jwts.builder().setSubject(subject).setClaims(claims).setIssuedAt(createdDate)
.setExpiration(expirationDate)
.signWith(SignatureAlgorithm.HS512, secret).compact();
}
Para recuperar utilizo este metodo:
private Claims getAllClaimsFromToken(String token) {
Claims body = null;
try {
JwtParser parser = Jwts.parser();
JwtParser setSigningKey = parser.setSigningKey(secret);
Jws<Claims> parseClaimsJws = setSigningKey.parseClaimsJws(token);
body = parseClaimsJws.getBody();
} catch (Exception e) {
e.printStackTrace();
}
return body;
}
toda a classe:
package br.com.netsoft.configuracao.auth;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Clock;
import io.jsonwebtoken.Jws;
import io.jsonwebtoken.JwtParser;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import io.jsonwebtoken.impl.DefaultClock;
import java.io.Serializable;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.function.Function;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.stereotype.Component;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
@Component
public class JwtTokenUtil implements Serializable {
static final String CLAIM_KEY_USERNAME = "sub";
static final String CLAIM_KEY_CREATED = "iat";
private static final long serialVersionUID = -3301605591108950415L;
@SuppressFBWarnings(value = "SE_BAD_FIELD", justification = "It's okay here")
private Clock clock = DefaultClock.INSTANCE;
@Value("${jwt.secret}")
private String secret;
@Value("${jwt.expiration}")
private String expiration;
public String getUsernameFromToken(String token) {
return getClaimFromToken(token, Claims::getSubject);
}
public Date getIssuedAtDateFromToken(String token) {
return getClaimFromToken(token, Claims::getIssuedAt);
}
public Date getExpirationDateFromToken(String token) {
return getClaimFromToken(token, Claims::getExpiration);
}
public <T> T getClaimFromToken(String token,
Function<Claims, T> claimsResolver) {
final Claims claims = getAllClaimsFromToken(token);
return claimsResolver.apply(claims);
}
private Claims getAllClaimsFromToken(String token) {
Claims body = null;
try {
JwtParser parser = Jwts.parser();
JwtParser setSigningKey = parser.setSigningKey(secret);
Jws<Claims> parseClaimsJws = setSigningKey.parseClaimsJws(token);
body = parseClaimsJws.getBody();
} catch (Exception e) {
e.printStackTrace();
}
return body;
}
private Boolean isTokenExpired(String token) {
final Date expiration = getExpirationDateFromToken(token);
return expiration.before(clock.now());
}
private Boolean isCreatedBeforeLastPasswordReset(Date created,
Date lastPasswordReset) {
return (lastPasswordReset != null && created.before(lastPasswordReset));
}
private Boolean ignoreTokenExpiration(String token) {
// here you specify tokens, for that the expiration is ignored
return false;
}
public String generateToken(UserDetails userDetails) {
Map<String, Object> claims = new HashMap<>();
return doGenerateToken(claims, userDetails.getUsername());
}
private String doGenerateToken(Map<String, Object> claims, String subject) {
final Date createdDate = clock.now();
final Date expirationDate = calculateExpirationDate(createdDate);
return Jwts.builder().setSubject(subject).setClaims(claims)
.setIssuedAt(createdDate).setExpiration(expirationDate)
.signWith(SignatureAlgorithm.HS512, secret).compact();
}
public Boolean canTokenBeRefreshed(String token, Date lastPasswordReset) {
final Date created = getIssuedAtDateFromToken(token);
return !isCreatedBeforeLastPasswordReset(created, lastPasswordReset)
&& (!isTokenExpired(token) || ignoreTokenExpiration(token));
}
public String refreshToken(String token) {
final Date createdDate = clock.now();
final Date expirationDate = calculateExpirationDate(createdDate);
final Claims claims = getAllClaimsFromToken(token);
claims.setIssuedAt(createdDate);
claims.setExpiration(expirationDate);
return Jwts.builder().setClaims(claims)
.signWith(SignatureAlgorithm.HS512, secret).compact();
}
public Boolean validateToken(String token, UserDetails userDetails) {
JwtUser user = (JwtUser) userDetails;
final String username = getUsernameFromToken(token);
final Date created = getIssuedAtDateFromToken(token);
// final Date expiration = getExpirationDateFromToken(token);
return (username.equals(user.getUsername()) && !isTokenExpired(token) && !isCreatedBeforeLastPasswordReset(
created, user.getLastPasswordResetDate()));
}
private Date calculateExpirationDate(Date createdDate) {
return new Date(createdDate.getTime() + Long.parseLong(expiration)
* 1000);
}
}
