优化获取小米路由器后台token

src/main/java/com/yutou/qqbot/utlis/XiaoMiRouter.java

@@ -10,8 +10,16 @@ import java.util.Date;
 
 public class XiaoMiRouter {
     private final static String key = "a2ffa5c9be07488bbb04a3a47d3c5f6a";
+    private static String token = null;
+
+    public static void setNotToken() {
+        token = null;
+    }
 
     public static String getToken() {
+        if (token != null) {
+            return token;
+        }
         String nonce = nonceCreat();
         String oldPwd = DigestUtils.sha1Hex(nonce + DigestUtils.sha1Hex("34864394" + key));
         JSONObject json = new JSONObject();
@@ -21,7 +29,8 @@ public class XiaoMiRouter {
         json.put("nonce", nonce);
         json = JSONObject.parseObject(HttpTools.http_post("http://192.168.31.1/cgi-bin/luci/api/xqsystem/login", HttpTools.toUrlParams(json).getBytes(StandardCharsets.UTF_8), 1, null));
         if (json.getInteger("code") == 0) {
-            return json.getString("token");
+            token = json.getString("token");
+            return token;
         }
         return null;
     }