Jak przekonwertować obiekt do pliku CSV za pomocą JavaScript?

Question

Chcę przekonwertować ten obiekt na plik CSV. Nazwy kolumn powinny być kluczami, jest to mały element tablicy. Ostatnia tablica będzie jedyna w swoim rodzaju (klucze), wszystkie pozostałe będą miały te same klucze, ale inne wartości.

[{ 
Comment: "Good", 
Experince Months: "4", 
Experince Years: "4", 
Score: "3", 
Subject: "CPP", 
Topic: "Scripting (mention details)" 
}, 
{ 
Comment: "Excilent", 
Experince Months: "6", 
Experince Years: "6", 
Score: "6", 
Subject: "CSharp", 
Topic: "WPF" 
}, 
{ 
Anything else worth highlighting: "Web Specialist", 
Result: "Selected", 
Total Business Analysis Experience: false, 
Total Project Management Experience: false, 
Total Score: 75, 
Total Server Side Development Experience: true, 
Total Server Side Support Experience: true, 
Total UI Development Experience: true, 
Total UI Support Experience: true 
}] 

Answer 1

To prosta realizacja:

// Returns a csv from an array of objects with 
// values separated by tabs and rows separated by newlines 
function CSV(array) { 
    // Use first element to choose the keys and the order 
    var keys = Object.keys(array[0]); 

    // Build header 
    var result = keys.join("\t") + "\n"; 

    // Add the rows 
    array.forEach(function(obj){ 
     keys.forEach(function(k, ix){ 
      if (ix) result += "\t"; 
      result += obj[k]; 
     }); 
     result += "\n"; 
    }); 

    return result; 
} 

Answer 2

JSON do CSV Converter

function ConvertToCSV(objArray) { 
     var array = typeof objArray != 'object' ? JSON.parse(objArray) : objArray; 
     var str = ''; 

     for (var i = 0; i < array.length; i++) { 
      var line = ''; 
      for (var index in array[i]) { 
       if (line != '') line += ',' 

       line += array[i][index]; 
      } 

      str += line + '\r\n'; 
     } 

     return str; 
    } 

Answer 3

Anha !! faktycznie mam PHP Class który działa całkiem dobrze z same json object key (używasz tutaj inny klawisz json w trzecim zestawie). Tak więc, jeśli chcesz, możesz zmodyfikować moją dowolną wartość (dla innego klucza obiektu). Tutaj wyjaśnię przykład i podzielę się z wami moją klasą. Mam nadzieję, że po modyfikacji tej klasy twoje życzenie się spełniło :)

PHP Export Class [Class.Export.php]

<?php 
/** 
* Class Export 
* 
* Send JSON data and make an array to save as Excel file 
* 
* @author neeraj.singh 
* @version 1.0 
* 
*/ 

// Class Start Here 
class Export { 

    /** 
    * Set Excel file name 
    * 
    * @var string 
    */ 
    public $filename = 'excel-doc'; 

    /** 
    * Set Excel field title 
    * 
    * @var string 
    */ 
    public $custom_titles; 

    /** 
    * Get JSON data and convert in Excel file 
    */ 
    public function saveAsExcel() { 
     $CSV = trim ($_POST ['exportdata']); 
     if (function_exists ('json_decode')) { 
      $data = json_decode ($CSV, true); 
      if (count ($data) > 0) { 
       // call excel export 
       $this->_createExcelByArray ($data); 
      } else { 
       die ("Sorry!! array not build."); 
      } 
     } else { 
      die ("Sorry!! json_decode not working on this server."); 
     } 
    } 

    /** 
    * Take an array and create 
    * Excel file 
    * 
    * @param array $dataArray   
    */ 
    private function _createExcelByArray($dataArray) { 
     // set excel file name 
     $this->filename = 'DEMO-Excel' . '-' . date ('d-m-Y-H-s'); 
     // get array field by first element of array 
     foreach ($dataArray [0] as $k => $v) { 
      $field [] = $k; 
     } 
     // get total no of field in array 
     $totalFields = count ($field); 
     $i = $j = 0; 
     // get array values 
     foreach ($dataArray as $v) { 
      for($j; $j < $totalFields; $j ++) { 
       $value [$i] [] = $v [$field [$j]]; 
      } 
      $i ++; 
      $j = 0; 
     } 
     $this->initExcel ($field, $value); 
    } 

    /** 
    * Creating an Excel file with array data 
    * 
    * @param array $titles   
    * @param array $array   
    */ 
    public function initExcel($titles, $array) { 
     $data = NULL; 
     if (! is_array ($array)) { 
      die ('The data supplied is not a valid array'); 
     } else { 
      $headers = $this->titles ($titles); 
      if (is_array ($array)) { 
       foreach ($array as $row) { 
        $line = ''; 
        foreach ($row as $value) { 
         if (! isset ($value) or $value == '') { 
          $value = "\t"; 
         } else { 
          $value = str_replace ('"', '""', $value); 
          $value = '"' . $value . '"' . "\t"; 
         } 
         $line .= $value; 
        } 
        $data .= iconv ("UTF-8", "GB18030//IGNORE", trim ($line)) . "\n"; 
       } 
       $data = str_replace ("\r", "", $data); 
       $this->generate ($headers, $data); 
      } 
     } 
    } 

    /** 
    * Create excel header and 
    * write data into file 
    * 
    * @param string $headers   
    * @param string $data   
    */ 
    private function generate($headers, $data) { 
     $this->set_headers(); 
     echo "$headers\n$data"; 
    } 

    /** 
    * Set Excel file field header 
    * 
    * @param array $titles   
    * @return string 
    */ 
    public function titles($titles) { 
     if (is_array ($titles)) { 
      $headers = array(); 
      if (is_null ($this->custom_titles)) { 
       if (is_array ($titles)) { 
        foreach ($titles as $title) { 
         $headers [] = iconv ("UTF-8", "GB18030//IGNORE", $title); 
        } 
       } else { 
        foreach ($titles as $title) { 
         $headers [] = iconv ("UTF-8", "GB18030//IGNORE", $title->name); 
        } 
       } 
      } else { 
       $keys = array(); 
       foreach ($titles as $title) { 
        $keys [] = iconv ("UTF-8", "GB18030//IGNORE", $title->name); 
       } 
       foreach ($keys as $key) { 
        $headers [] = iconv ("UTF-8", "GB18030//IGNORE", $this->custom_titles [array_search ($key, $keys)]); 
       } 
      } 
      return implode ("\t", $headers); 
     } 
    } 

    /** 
    * Set Response Header 
    */ 
    private function set_headers() { 
     $ua = $_SERVER ["HTTP_USER_AGENT"]; 
     $filename = $this->filename . ".xls"; 
     $encoded_filename = urlencode ($filename); 
     $encoded_filename = str_replace ("+", "%20", $encoded_filename); 
     header ("Pragma: public"); 
     header ("Expires: 0"); 
     header ("Cache-Control: must-revalidate, post-check=0, pre-check=0"); 
     header ("Content-Type: application/vnd.ms-excel; charset=UTF-8"); 
     header ("Content-Type: application/force-download"); 
     header ("Content-Type: application/octet-stream"); 
     header ("Content-Type: application/download"); 
     if (preg_match ("/MSIE/", $ua)) { 
      header ('Content-Disposition: attachment; filename="' . $encoded_filename . '"'); 
     } else if (preg_match ("/Firefox/", $ua)) { 
      header ('Content-Disposition: attachment; filename*="utf8\'\'' . $filename . '"'); 
     } else { 
      header ('Content-Disposition: attachment; filename="' . $filename . '"'); 
     } 
     header ("Content-Transfer-Encoding: binary"); 
    } 
} 
// Class End Here 

Dobra, tu jest HTML i PHP Code aby pokazać, jak to działa.

HTML Code:

<!doctype html> 
<html lang="en"> 
<head> 
    <meta charset="UTF-8"> 
    <title>JSON to Excel POC</title>  
    <script type="text/javascript"> 
    <!--  
    function excelExport() { 
     // this is your json data as string or you can 
     // use as object too 
     var jsonObject = '[{ "Comment" : "Good", "ExperinceMonths" : "4", "ExperinceYears" : "4", "Score" : "3", "Subject" : "CPP", "Topic" : "Scripting (mention details)" }, { "Comment" : "Excilent", "ExperinceMonths" : "6", "ExperinceYears" : "6", "Score" : "6", "Subject" : "CSharp", "Topic" : "WPF" }]';  
     // create a form 
     var form   = document.createElement('FORM'); 
     form.name   = 'exportform'; 
     form.id    = 'exportform'; 
     form.method   = 'POST'; 
     form.action   = './export.php'; 
     // create a hidden input inside form 
     var hiddenInput   = document.createElement('INPUT'); 
     hiddenInput.type = 'HIDDEN'; 
     hiddenInput.name = 'exportdata'; 
     hiddenInput.id  = 'exportdata'; 
     hiddenInput.value = jsonObject; 
     // insert hidden element inside form 
     form.appendChild(hiddenInput); 
     // insert form inside body 
     document.body.appendChild(form); 
     // submit the form 
     form.submit(); 
     // remoce the form 
     document.body.removeChild(form); 
     return true; 
    } 
    //--> 
    </script> 
    </head> 
<body> 
    <input type="button" value="Export" onClick='excelExport(); return false;'> 
</body> 
</html> 

i wreszcie Oto

PHP Code [export.php]

<?php 
// add Class Export File 
require_once 'Class.Export.php'; 
// make a new onject of Class Export 
$export = new Export(); 
// Send POSt data to make 
// Excel File 
if(isset($_POST['exportdata'])){ 
    $export->saveAsExcel(); 
} 
?> 

Hope, ten fragment kodu będzie pomagać ludziom powodu Dzielenie się jest zawsze Troska :) Pozdrawiam !!