使用PHPExcel读取Excel文件时会读出乱码

		require_once dirname(__FILE__) . "/PHPExcel/Classes/PHPExcel.php";		$PHPReader = new PHPExcel_Reader_Excel2007();		if (!$PHPReader->canRead($filePath)) {			$PHPReader = new PHPExcel_Reader_Excel5();			if (!$PHPReader->canRead($filePath)) {				echo "no file";				die;			}		}		$PHPExcel = $PHPReader->load($filePath);		$sheetCount = $PHPExcel->getSheetCount();		$sheetNames = $PHPExcel->getSheetNames();		for ($SheetID = 0; $SheetID < $sheetCount; $SheetID++) {			$name = $sheetNames[$SheetID];			$currentSheet = $PHPExcel->getSheetByName($name);			$allColumn = $currentSheet->getHighestColumn();			$allRow = $currentSheet->getHighestRow();			$drive = new DriveCommand();			$data = array();			for ($currentRow = 1; $currentRow <= $allRow; $currentRow++) {				for ($currentColumn = 'A'; $currentColumn <= $allColumn; $currentColumn++) {					$val = $currentSheet->getCellByColumnAndRow(ord($currentColumn) - 65, $currentRow)->getValue();					//$objExcel[$name][$currentRow - 1][ord($currentColumn) - 65] = $val;					$data[$currentRow][] = $val;				}			}			if ($name == "产品信息") $name = "product";			else if ($name == "行业") $name = "industry";			else if ($name == "集团信息"){				continue;				 $name = "bloc";				var_dump($data);				die;			}			else if ($name == "客户信息")			{				var_dump($data);				die;				$name = "customer";			}			else if ($name == "业务员信息") $name = "employeer";			else continue;			$drive->actionUpload($name, $data);		}