获取无法读取未定义错误的属性需要帮助从应该是json对象获取值

Question

我试图从我认为应该是JSON对象的值中获取值，但我开始认为它不是。

首先是我的代码：

这部分实际上调用了IBM Bluemix的气象服务，并返回应该是json对象的内容。

var weatherData;

function getWeather(latitude, longitude, startDate, endDate) {
   // Prepare output in JSON format

      var callURL = "https://REMOVEDFORSECURITYREASONS@twcservice.mybluemix.net/api/weather/v1/geocode/"+latitude+"/"+longitude+"/almanac/daily.json?units=e&start="+startDate+"&end="+endDate

      request.get(callURL, {
        json: true
      },
      function (error, response, body) {
        if(error){
            console.log(error);
        } else {
            //var meta = body["metadata"];
            //var id = meta["transaction_id"];
            weatherData = body;
        }
      });
}

这部分应该解析来自sql数据库的一些数据，然后解析天气数据合并它并输出它，如下面的代码所示，但如果我能得到我需要的天气数据，我可以做那部分

function publish(rows)
{       
       var timestamp = rows[i].timestamp;
        var motestack = rows[i].motestack;   
        var temperature = rows[i].temperature;
        var spcond = rows[i].spcond;
        var ph = rows[i].ph;   
        var depth = rows[i].depth;
        var power = rows[i].power;   
        var turbidity = rows[i].turbidity;
        var piezoresistance = rows[i].piezoresistance
        var mgl_odo_sat = rows[i].mgl_odo_sat
        var longitude = "-82.49357"
        var latitude = "34.5244887"
        var startDate = "0312"
        var endDate = "0312"

        getWeather(latitude,longitude,startDate,endDate);

        var almanac = weatherData;

        console.log(almanac);

        //deviceClient.publish("status","json",'{"d" : { "time" : \"'+timestamp+'\" , "mote" : \"'+motestack+'\" , "temp" : \"'+temperature+'\" , "spcond" : \"'+spcond+'\" , "ph" : \"'+ph+'\" , "depth" : \"'+depth+'\" , "turbidity" : \"'+turbidity+'\", "power" : \"'+power+'\" , "piezoresistance" : \"'+piezoresistance+'\" , "mgl_odo_sat" : \"'+mgl_odo_sat+'\", "latitude" : \"'+latitude+'\", "longitude" : \"'+longitude+'\" }}', 1);
        //console.log("status","json",'{"d" : { "time" : \"'+timestamp+'\" , "mote" : \"'+motestack+'\" , "temp" : \"'+temperature+'\" , "spcond" : \"'+spcond+'\" , "ph" : \"'+ph+'\" , "depth" : \"'+depth+'\" , "turbidity" : \"'+turbidity+'\", "power" : \"'+power+'\" , "piezoresistance" : \"'+piezoresistance+'\" , "mgl_odo_sat" : \"'+mgl_odo_sat+'\", "latitude" : \"'+latitude+'\", "longitude" : \"'+longitude+'\" }}', 1);
        i=i+1;
}

这是我从上面的代码得到的输出。我已经尝试了各种方法来获取密钥：值对但是我得到的错误就像＆＃34;无法读取属性＆＃39;某些关键＆＃39;未定义＆＃34;。如果我执行body.almanac_summaries之类的操作，我会获得almanac_summaries数据，但它包含在未定义的{}中，如下面的数据所示。

Connection established
Device Connected
Data received from Db:

undefined
{ metadata: 
   { language: 'en-US',
     transaction_id: '1491701143744:483526643',
     version: '1',
     latitude: 34.52,
     longitude: -82.49,
     units: 'e',
     expire_time_gmt: 1491426760,
     status_code: 200 },
  almanac_summaries: 
   [ { class: 'almanac',
       station_id: '380165',
       station_name: 'ANDERSON',
       almanac_dt: '0312',
       interval: 'D',
       avg_hi: 64,
       avg_lo: 39,
       record_hi: 86,
       record_hi_yr: 1967,
       record_lo: 20,
       record_lo_yr: 1998,
       mean_temp: 52,
       avg_precip: 0.14,
       avg_snow: 0,
       record_period: 30 } ] }