dsdstudio · November 30, 2019 06:53 · Nov 30, 2019
diff --git a/jwt.java b/jwt.java
@@ -0,0 +1,46 @@
+import com.auth0.jwt.JWT;
+import com.auth0.jwt.JWTVerifier;
+import com.auth0.jwt.algorithms.Algorithm;
+import com.auth0.jwt.interfaces.DecodedJWT;
+
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+import java.util.Date;
+
+class Scratch {
+
+    static String createToken() {
+        try {
+            Algorithm algorithm = Algorithm.HMAC256("bO4Tbmfhkztt5Ew6hcpZ_jHj56DT4-0SRIKRUYxwYF");
+            Date expireDate = Date.from(LocalDateTime.now().plusDays(1)
+                    .atZone(ZoneId.systemDefault()).toInstant());
+            return JWT.create()
+                    .withIssuer("gms")
+                    .withExpiresAt(expireDate)
+                    .withClaim("userId", "20xxxxx")
+                    .withClaim("loginId", "sampleuser")
+                    .sign(algorithm);
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    static void verify(String token) {
+        Algorithm algorithm = Algorithm.HMAC256("bO4Tbmfhkztt5Ew6hcpZ_jHj56DT4-0SRIKRUYxwYF");
+        JWTVerifier verifier = JWT.require(algorithm)
+                .withIssuer("gms")
+//                 .acceptExpiresAt(60 * 60 * 24) // expire 1일전부터만 유효
+                .build();
+
+        DecodedJWT decodedJWT = verifier.verify(token);
+        System.out.println(decodedJWT);
+        System.out.println("userId -> " + decodedJWT.getClaim("userId").asString());
+    }
+
+    public static void main(String[] args) {
+        String token = createToken();
+        System.out.println(token);
+
+        verify(token);
+    }
+}