fix: 输出JSON

6.CsvCount_ES/CsvCount_ES/Form1.cs

@@ -707,11 +707,17 @@ namespace CsvCount_ES
                                     ResultItem tempitem = new ResultItem();
 
                                     ResultQueue.TryDequeue(out tempitem);
-
+                                    string returnstr;
                                     //将result结果放入到集合中。统一转为json字符串，写入文件。
+                                    if (ResultQueue.Count >0)
+                                    {
+                                         returnstr = JsonConvert.SerializeObject(tempitem) + ",";
+                                    }
+                                    else
+                                    {
+                                         returnstr = JsonConvert.SerializeObject(tempitem) ;
 
-                                    string returnstr = JsonConvert.SerializeObject(tempitem) + ",";
-
+                                    }
                                     sw.Write(returnstr);
                                     sw.Flush();
                                     sw.Close();