修改网页授权后通过指定链接跳转时，页面缓存问题.

pages/welcome/welcome.vue

@@ -39,6 +39,10 @@
 					this.getAccessToken();//获取openID
 				
 			} else {
+				uni.setStorageSync("accountId","");
+				uni.setStorageSync("urlKey","");
+				uni.setStorageSync("urlCode","");
+				
 				if(locationPathArr[1]){
 					let accountId = locationPathArr[1].split("&")[0];
 					app.globalData.accountId=accountId;