java - JSON 解析器文件结尾错误

Question

我有这个程序，发送请求以从网络以 JSON 格式接收天气信息。我将在 for 循环中为每个城市发送一个请求。但是，在接收并解析第一个 JSON 后，每当它尝试解析第二个 JSON 时，它会给出文件结束错误并且不会将信息写入数据库。可能是什么问题？

public static void getHistory()
    {
        Connection connection = connectToDatabase();; // manages connection

        System.out.println("Getting History Data");
        //Loops through every single city and requests, parses and inserts the history weather data.
        PreparedStatement pStatement = null;
        Scanner scanner = new Scanner(System.in);

        for(int i = 35 ; 0 < cities.length ; i++)
        {
            int errorCount = 0;
            int userInput;
            System.out.printf("City no : %d. 1 to continue\n", i+1);

            JSONParser parser = new JSONParser();           
            JSONObject jsonObj = new JSONObject();
            Object obj = new Object();
            String resultString = new String();

            userInput = scanner.nextInt();

            if(userInput != 1)
            {
                System.out.println("Terminating the program!");
                break;
            }else if(userInput == 1)
            {
                System.out.println("Continue...");
            }

            System.out.println("For Loop");
            System.out.printf("!%d: %s!\n", i, cities[i]);

            resultString = sendRequestForHistoryData(cities[i]);

            try
            {
                obj = parser.parse(resultString);
                jsonObj = (JSONObject)obj;
                parseHistoryData(jsonObj);
            }   
            catch(ParseException pe)
            {
                System.out.println("position: " + pe.getPosition());
                System.out.println(pe);
            }

            //Iterates through all the WeatherData objects and writes them into the database.
            Iterator<WeatherData> vectorIterator = parsedWeatherObjects.iterator();

            System.out.printf("Vector Length: %d\n", parsedWeatherObjects.size());
            Statement statement = null;


            while(vectorIterator.hasNext())
            {
                WeatherData weather = vectorIterator.next();

                /*
                 * Table Structure for HistoryData Table in SQL Server
                 * 1) City_ID - int
                 * 2)City_Name - nvarchar(50)
                 * 3)Time - datetime
                 * 4)Received_Time - datetime
                 * 5)Humidity - float
                 * 6)Rain_info - float
                 * 7)Snow_info - float
                 * 8)Temperature - float
                 * 9)Min_Temperature - float
                 * 10)Max_Temperature - float
                 * 11)Description - nvarchar(50)
                */

                try 
                {
                    String statementString = "INSERT INTO WeatherHistory("
                         +"City_ID,"
                         +"City_Name,"
                         +"Time,"
                         +"Received_Time,"
                         +"Humidity,"
                         +"Rain_Info,"
                         +"Snow_Info,"
                         +"Temperature,"
                         +"Min_Temperature,"
                         +"Max_Temperature,"
                         +"Description)"
                         +"VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";

                    pStatement = connection.prepareStatement(statementString);

                    java.sql.Date sqlDate = new java.sql.Date(weather.getDate());
                    java.sql.Date currentSqlDate = new java.sql.Date(currentTimestamp.getTime());                   
                    //java.sql.Timestamp sqlTimestamp = new java.sql.Timestamp(weather.getDate());
                    Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("GMT+2"));
                    String formattedDate = convertEpochToDateString(weather.getDate());
                    //System.out.printf("Formatted Date: " + formattedDate + "\n");
                    java.sql.Timestamp sqlTimestamp = Timestamp.valueOf(formattedDate);

                    pStatement.setInt(1, weather.getCityCode());
                    pStatement.setString(2, weather.getCity());
                    pStatement.setTimestamp(3, sqlTimestamp, cal);
                    pStatement.setDate(4, currentSqlDate);
                    pStatement.setFloat(5, weather.getHumidity());
                    pStatement.setFloat(6, weather.getRainInfo());
                    pStatement.setFloat(7, weather.getSnowInfo());
                    pStatement.setFloat(8, weather.getTemperature());
                    pStatement.setFloat(9, weather.getMinTemperature());
                    pStatement.setFloat(10, weather.getMaxTemperature());
                    pStatement.setString(11, weather.getDescription());

                    pStatement.execute();

                } 
                catch (SQLException e) 
                {
                    // TODO Auto-generated catch block
                    //e.printStackTrace();
                    //System.out.println("SQL Key error.");
                    errorCount++;
                }
            }//While Loop End

            System.out.printf("SQL Error Count: %d\n", errorCount);

            try 
            {
                if (pStatement != null) 
                {
                    pStatement.close();
                    System.out.println("Statement close.");
                }
            }catch (SQLException ex) 
            {
                // TODO Auto-generated catch block
                ex.printStackTrace();
            }
        }//For Loop End

        try 
        {
            if (connection != null) 
            {
                connection.close();
                System.out.println("Connection close.");
            }

        } catch (SQLException ex) 
        {
            // TODO Auto-generated catch block
            ex.printStackTrace();
        }

    }//Function End