簡單小試。
實作
參考網路範例調整，簡單測試jwt功能，不要直接用下面程式喔。
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| package util;
import java.io.Serializable;
import java.time.Instant;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import javax.security.auth.message.AuthException;
import org.springframework.stereotype.Component;
import io.jsonwebtoken.ExpiredJwtException;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.MalformedJwtException;
import io.jsonwebtoken.SignatureAlgorithm;
import io.jsonwebtoken.SignatureException;
import io.jsonwebtoken.UnsupportedJwtException;
@Component
public class JwtTokenUtils implements Serializable {
private static final long serialVersionUID = 6307640988200151725L;
private static final long EXPIRATION_TIME = 10 * 60 * 1000;
private static final String SECRET = "PBCIKEY";
public String generateToken(Map<String, String> userDetails) {
Map<String, Object> claims = new HashMap<>();
claims.put( "userName", userDetails.get("userName") );
return Jwts.builder()
.setClaims( claims )
.setExpiration( new Date( Instant.now().toEpochMilli() + EXPIRATION_TIME ) )
.signWith( SignatureAlgorithm.HS512, SECRET )
.compact();
}
public void validateToken(String token) throws AuthException {
try {
Jwts.parser()
.setSigningKey( SECRET )
.parseClaimsJws( token );
} catch (SignatureException e) {
throw new AuthException("Invalid JWT signature.");
}
catch (MalformedJwtException e) {
throw new AuthException("Invalid JWT token.");
}
catch (ExpiredJwtException e) {
throw new AuthException("Expired JWT token");
}
catch (UnsupportedJwtException e) {
throw new AuthException("Unsupported JWT token");
}
catch (IllegalArgumentException e) {
throw new AuthException("JWT token compact of handler are invalid");
}
}
public static void main(String[] argv) {
Map<String,String> userMap = new HashMap<>();
userMap.put("userName","HelloUser");
JwtTokenUtils jwtUtils = new JwtTokenUtils();
String token = jwtUtils.generateToken(userMap);
System.out.println("token:" + token);
try {
jwtUtils.validateToken(token);
String user = (String) jwtUtils.getUserName(token);
System.out.println("取得 user:" + user);
} catch (AuthException e) {
e.printStackTrace();
}
}
private Object getUserName(String token) {
return Jwts.parser()
.setSigningKey(SECRET)
.parseClaimsJws(token)
.getBody()
.get("userName");
}
}
|
參考文章
Day 29 - Spring Boot 想要資料令牌要先帶來!－ JWT - iT 邦幫忙::一起幫忙解決難題，拯救 IT 人的一天
Java - JSON Web Tokens (JWT) 示範 | Kenny’s Blog
[筆記] 透過 JWT 實作驗證機制. 以 JWT（JSON Web Tokens）實作驗證機制 | by Mike Huang | 麥克的半路出家筆記 | Medium