無法使用Papa Parse硬編碼文件目錄以進行CSV解析

Question

我正在嘗試使用Javascript中的Papa Parse解析一個.csv文件，該文件將位於一個已知的本地目錄中。 如果我有一種要求用戶瀏覽文件的機制，它的工作原理就像是一種魅力。 但是我不知道如何獲取它以在給定位置自動訪問文件。 我覺得自己缺少一些簡單的東西，但是我不確定是什么。 到目前為止，我的代碼：

<html>
<head>
  <title>testing papa parse</title>
</head>
<body>

<script src="js/PapaParse-4.0.7/papaparse.min.js"></script>
<script src="js/jquery-2.1.1.min.js"></script>
<script>
  var data;
    // var file = evt.target.files[0];
    var file = "\\files\\telemetryData.csv";

      Papa.parse(file, {
      //makes sure the first line is interpreted as a header, not data
      header: true,

      //allows stuff to be typed as their respective primitive types instead of only strings. turned off in this case
      dynamicTyping: false,

      //allows you to define the delimiter if not a default comma
      delimiter: ",",

      //allows you to define a comment line, which would be skipped by the parser
      comments: "//",

      //turns on fastmode, quicker but assumes no quoted fields is present
      fastmode: true,

      download: true,

      step: function(results){
        console.log(results.data);
      }
    });
</script>

</body>
</html>

CSV數據：

TEAM_ID,MISSION_TIME,ALT_SENSOR,OUTSIDE_TEMP,INSIDE_TEMP,VOLTAGE,FSW_STATE
ubArtemis,0,36,20,20,9,1
ubArtemis,1,45,18,20,9,1
ubArtemis,2,50,16,20,9,1
ubArtemis,3,65,14,19,9,1
ubArtemis,4,79,12,17,8,2
//hello this is a comment
ubArtemis,5,100,10,16,8,3
ubArtemis,6,120,8,15,8,4
ubArtemis,7,145,6,14,8,5
ubArtemis,8,160,4,12,7,6
ubArtemis,9,200,2,10,6,7

Answer 1

使用jquery“獲取”文件內容，並使用papaparse解析csv字符串：

//parse the data file
    var csvfile = "data/data.csv";

    $.get(csvfile, function (data) {
        var csvdata = Papa.parse(data);
        console.log(csvdata);
    });

Answer 2

您需要先從文件中讀取數據，然后才能使用它進行解析。以下代碼對我有用

    Papa.parse(fs.createReadStream(file), {
        delimiter: ",",
        header: true,
        complete: function(results) {
            console.log("Finished:", results.data);
            done();
        }
    });