Question

我想比较两个包含相同内容的文件。下面是我的代码来比较两个文件，但没有正常工作，我不知道错误是什么

AbstractEntity

例如我的文件data.txt包含类似这样的内容

public ActionResult connectDB()
    {

        const string DB_CONN_STR = "Server=MyServer;Port=MyPort;Uid=MyUid;Database=MyDB;";

        MySqlConnection cn = new MySqlConnection(DB_CONN_STR);

        try
        {

            string sqlCmd = "select * from t_documento";

            MySqlDataAdapter adr = new MySqlDataAdapter(sqlCmd, cn);
            adr.SelectCommand.CommandType = CommandType.Text;
            DataTable dt = new DataTable();
            adr.Fill(dt); //opens and closes the DB connection automatically !! (fetches from pool)

            return Content(JsonConvert.SerializeObject(dt).ToString());
        }
        catch (Exception ex)
        {
            Console.WriteLine("{oops - {0}", ex.Message);
            return Content(ex.ToString());
        }
        finally
        {
            cn.Dispose(); // return connection to pool

        }        
    }

和我的data1.txt包含类似这样的

    open ( FILE , '<', "data.txt" ) or die $!;
    open ( FILE1 , '<', "data1.txt" ) or die $!;
    my @data = <FILE>;
    my @data1 = <FILE1>;
    my $match = 0;
    my $no_match = 0;
    for ( $i =0 ; $i<=864 ; $i++ ) {
        my $data_line = $data[$i];
        my $data1_line = $data1[$i];
        if ( $data1_line eq $data_line ){
            $match += 1;
            print " total match = $match \n";
        } 
        else {
            $no_match +=1 ;
            print " line $i no match\n ";
        }
    }

我也尝试按空格分割并进行比较，但它会使我的代码更长。比较两个文件的最佳方法是什么？我的预期输出是它会显示哪条线不匹配以及总匹配线多少。对于上面的示例我想显示如下结果

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
....

然而，我从上面的脚本获得的输出是所有行不匹配。感谢

Answer 1

 !/usr/bin/perl

    use strict;
    use warnings;
    use Data::Dumper;

    # read the data
    my ($file1, $file2) = ('file1.txt', 'file2.txt');
    my @firstfile;
    my @secondfile;

    open (my $fh, '<', $file1) or die "Cant open $!";
    while (my $line = <$fh>) {
       chomp $line;
       push @firstfile, split / /, $line;
    }

    open (my $fh2, '<', $file1) or die "Cant open $!";
    while (my $line = <$fh2>) {
       chomp $line;
       push @secondfile, split / /, $line;;
    }
    # cmp the data in files
    my %cmp;
    %cmp = map {$_ => 1} @firstfile;

    foreach my $element (@secondfile) {
        if ($cmp{$element}) {
          print "$element exists in both files\n";
        } else {
          print "$element  only in second file\n";
        }
    }

Answer 2

这是一个快速shell解决方案，用于检查这两个文件是否具有完全相同的内容。如果以下脚本的结果为零，则两个文件具有相同的内容。

diff data.txt data1.txt | wc -l

更具体地说：

diffLines=$( diff data.txt data1.txt | wc -l )
if [ $diffLines -eq 0 ]
then
  echo "Files have the same content"
fi

以最佳方式比较具有相同内容的两个文件

2 个答案: