使用Spreadsheet::ParseExcel时出错

Question

在编译以下代码时，我得到了两个错误：

#!/usr/bin/perl
use strict;
use warnings;

use Spreadsheet::ParseExcel;

my $xlsparser = Spreadsheet::ParseExcel->new();
my $xlsbook   = $parser->parse('xsl_test.xls');
my $xls       = $xls->worksheet(0);

my ( $row_first, $row_last ) = $xls->row_range();
my ( $col_first, $col_last ) = $xls->col_range();

my $csv = '';

for my $row ( $row_first .. $row_last ) {    #Step through each row
    for my $col ( $col_first .. $col_last ) {    #Step through each column
        my $cell = $xls->get_cell( $row, $col );    #Get the current cell

        next unless $cell;

        $csv .= $cell->unformatted();    #Get the cell's raw data -- no border colors or anything like that

        if ( $col == $col_last ) {
            $csv .= "\n";                #Make a new line at the end of the row
        } else {
            $csv .= ",";
        }
    }
}

错误：

global symbol "$parser" requires explicit package name at line 8
global symbol "$xls" requires explicit package name at line 9

我从http://www.ehow.com/how_7352636_convert-xls-csv-perl.html获得上述代码，并使用以下命令安装excel模块：cpan Spreadsheet::ParseExcel Spreadsheet::XLSX Spreadsheet::Read

是什么导致了这个错误？

Answer 1

这些错误意味着您正在使用strict，但是您没有用my声明一些变量。例如，您声明了$xmlprser，但随后尝试使用未声明的$parser。您复制的代码有错误。

获取代码的更好地方是源代码本身：Spreadsheet::ParseExcel

尝试：

my $parser = Spreadsheet::ParseExcel->new();
my $xlsbook = $parser->parse('xsl_test.xls');
my $xls = $xlsbook->worksheet(0);