修改控制器及新增城市功能

ruoyi-common/src/main/java/com/ruoyi/common/utils/file/WeatherUtils.java

@@ -18,7 +18,7 @@ public class WeatherUtils
         //buffer用于接受返回的字符
         StringBuffer buffer = new StringBuffer();
         try {
-            //建立URL，把请求地址给补全，其中urlencode（）方法用于把params里的参数给取出来
+            //拼接url连接
             URL url = new URL(requestUrl+"?"+urlencode(params));
             //打开http连接
             HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();
@@ -40,7 +40,6 @@ public class WeatherUtils
             bufferedReader.close();
             inputStreamReader.close();
             inputStream.close();
-            inputStream = null;
             //断开连接
             httpUrlConn.disconnect();