51 lines
1.5 KiB
Java
51 lines
1.5 KiB
Java
package io.spring.infrastructure.service;
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import io.jsonwebtoken.Claims;
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import io.jsonwebtoken.Jws;
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import io.jsonwebtoken.Jwts;
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import io.jsonwebtoken.SignatureAlgorithm;
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import io.spring.core.service.JwtService;
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import io.spring.core.user.User;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.stereotype.Component;
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import java.util.Date;
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import java.util.Optional;
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@Component
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public class DefaultJwtService implements JwtService {
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private String secret;
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private int sessionTime;
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@Autowired
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public DefaultJwtService(@Value("${jwt.secret}") String secret,
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@Value("${jwt.sessionTime}") int sessionTime) {
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this.secret = secret;
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this.sessionTime = sessionTime;
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}
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@Override
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public String toToken(User user) {
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return Jwts.builder()
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.setSubject(user.getId())
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.setExpiration(expireTimeFromNow())
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.signWith(SignatureAlgorithm.HS512, secret)
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.compact();
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}
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@Override
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public Optional<String> getSubFromToken(String token) {
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try {
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Jws<Claims> claimsJws = Jwts.parser().setSigningKey(secret).parseClaimsJws(token);
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return Optional.ofNullable(claimsJws.getBody().getSubject());
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} catch (Exception e) {
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return Optional.empty();
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}
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}
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private Date expireTimeFromNow() {
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return new Date(System.currentTimeMillis() + sessionTime * 1000);
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}
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}
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