add spring security and token management

src/main/java/com/iconplus/smartproc/helper/service/TokenUtils.java

@@ -0,0 +1,53 @@
+package com.iconplus.smartproc.helper.service;
+
+import com.nimbusds.jose.JWSObject;
+import com.nimbusds.jose.Payload;
+import lombok.extern.log4j.Log4j2;
+import net.minidev.json.JSONObject;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Objects;
+
+@Log4j2
+public class TokenUtils {
+
+    private TokenUtils() {
+
+    }
+
+    public static Map<String, String> decodeToken(String jwtToken) {
+        Map<String, String> body = new HashMap<>();
+
+        try {
+            if (jwtToken != null) {
+                jwtToken = jwtToken.replace("Bearer", "");
+                jwtToken = jwtToken.trim();
+            }
+            if (StringUtils.isBlank(jwtToken)) {
+                return body;
+            }
+            JWSObject token = JWSObject.parse(jwtToken);
+
+            Payload tokenPayload = token.getPayload();
+            JSONObject tokenBody = tokenPayload.toJSONObject();
+
+            tokenBody.forEach((key, value) -> {
+                if (Objects.isNull(value)) {
+                    value = "";
+                }
+
+                body.put(key, value.toString());
+            });
+        } catch (Exception e) {
+            log.error("Failed to parse JWT Token. Error: {}", e.getMessage());
+        }
+
+        return body;
+    }
+
+    public static Object getValueByParam(String param, String token) {
+        return decodeToken(token).get(param);
+    }
+}