我正在为我的应用程序使用PhpExcel
,看到一个错误。我已尝试使用处理异常try{}catch(){}
,但它不起作用。如何使用PhpExcel处理异常?这是我的代码:
function import($excelObj) {
$sheet=$excelObj->getActiveSheet();
$cell = $sheet->getCellByColumnAndRow(1, 10);//assume we need calculate at col 1, row 10
try {
//This line seen error, but cannot echo in catch.
$val = $cell->getCalculatedValue(); // $cell contain a formula, example: `=A1+A6-A8`
// with A1 is constant, A6 is formula `=A2*A5`
// and A8 is another `=A1/(A4*100)-A7`
return $val;
} catch (Exception $e) {
echo $e->getTraceAsTring();
}
}
感谢您的帮助!
计算引擎应该抛出一个可捕获的普通PHP异常。我用于调试计算引擎错误的前端逻辑是:
// enable debugging
PHPExcel_Calculation::getInstance()->writeDebugLog = true;
$formulaValue = $sheet->getCell($cell)->getValue();
echo '<b>'.$cell.' Value is </b>'.$formulaValue."<br />'n";
$calculate = false;
try {
$tokens = PHPExcel_Calculation::getInstance()->parseFormula($formulaValue,$sheet->getCell($cell));
echo '<b>Parser Stack :-</b><pre>';
print_r($tokens);
echo '</pre>';
$calculate = true;
} catch (Exception $e) {
echo "PARSER ERROR: ".$e->getMessage()."<br />'n";
echo '<b>Parser Stack :-</b><pre>';
print_r($tokens);
echo '</pre>';
}
if ($calculate) {
// calculate
try {
$cellValue = $sheet->getCell($cell)->getCalculatedValue();
} catch (Exception $e) {
echo "CALCULATION ENGINE ERROR: ".$e->getMessage()."<br />'n";
echo '<h3>Evaluation Log:</h3><pre>';
print_r(PHPExcel_Calculation::getInstance()->debugLog);
echo '</pre>';
}
}
这提供了许多关于计算引擎如何工作的附加信息,这些信息在调试时非常有用。