add getKey

src/main/java/com/imyeyu/spring/TimiSpring.java

@@ -346,7 +346,16 @@ public class TimiSpring {
 	 * @return 令牌
 	 */
 	public static String getToken() {
-		return TimiJava.firstNotEmpty(getHeader("Token"), getHeader("token"), getRequestArg("token"), getRequestArg("Token"));
+		return TimiJava.firstNotEmpty(getHeader("Token"), getHeader("token"), getRequestArg("Token"), getRequestArg("token"));
+	}
+
+	/**
+	 * 获取请求密钥，键为 Key 或 key，包括请求头和 URI
+	 *
+	 * @return 密钥
+	 */
+	public static String getKey() {
+		return TimiJava.firstNotEmpty(getHeader("Key"), getHeader("key"), getRequestArg("Key"), getRequestArg("key"));
 	}
 
 	/**