Perl 使用Text::CSV::Slurp将哈希转换为CSV
我有一个Perl哈希,需要将其写入JSON和CSV格式 我的散列的打印转储程序\%formdata如下所示Perl 使用Text::CSV::Slurp将哈希转换为CSV,perl,csv,Perl,Csv,我有一个Perl哈希,需要将其写入JSON和CSV格式 我的散列的打印转储程序\%formdata如下所示 $VAR1 = { 'SPRequest' => { 'xrelease' => '13038', 'macaddr' => '47:00:11:22:00:30', 'na
$VAR1 = {
'SPRequest' => {
'xrelease' => '13038',
'macaddr' => '47:00:11:22:00:30',
'name' => 'localhost',
'description' => 'demo'
},
'.submit' => bless( do{\(my $o = 1)}, 'JSON::PP::Boolean' ),
'class' => 'SPRequest',
'22406' => {
'win.profile' => 'production',
'win.os_version' => 'standard',
'win.os_part_size' => '1'
}
};
下面是我用来生成json文件的代码片段
my $form_data_file = "/tmp/${hostname}_${macaddr}.json";
open FH, ">$form_data_file" or die "Could not open $form_data_file. :$!\n";
print FH to_json( \%formdata, {pretty=>1} );
close FH;
我可以将我的JSON输出到如下文件:
[red@tools-dev1 psong]$ cat /tmp/localhost_47-00-11-22-00-30.json
{
"SPRequest" : {
"xrelease" : "13038",
"macaddr" : "47:00:11:22:00:30",
"name" : "localhost",
"description" : "demo"
},
".submit" : true,
"class" : "SPRequest",
"22406" : {
"win.profile" : "production",
"win.os_version" : "standard",
"win.os_part_size" : "1"
}
}
[red@tools-dev1 psong]$ cat /tmp/localhost_47-00-11-22-00-30.csv ; echo
.submit,22406,SPRequest,class
true,HASH(0x8d81918),HASH(0x8d67980),SPRequest
以下是我用来创建CSV文件的代码:
my $form_data_file_csv = "/tmp/${hostname}_${macaddr}.csv";
# Text::CSV::Slurp wants arrayref of hashref
my $ARoHR = [ \%formdata ];
my $csv = Text::CSV::Slurp->create( input => $ARoHR);
open FH, ">$form_data_file_csv" or die "Could not open $form_data_file_csv. :$!\n";
print FH $csv;
close FH;
但问题是我的CSV文件最终看起来是这样的:
[red@tools-dev1 psong]$ cat /tmp/localhost_47-00-11-22-00-30.json
{
"SPRequest" : {
"xrelease" : "13038",
"macaddr" : "47:00:11:22:00:30",
"name" : "localhost",
"description" : "demo"
},
".submit" : true,
"class" : "SPRequest",
"22406" : {
"win.profile" : "production",
"win.os_version" : "standard",
"win.os_part_size" : "1"
}
}
[red@tools-dev1 psong]$ cat /tmp/localhost_47-00-11-22-00-30.csv ; echo
.submit,22406,SPRequest,class
true,HASH(0x8d81918),HASH(0x8d67980),SPRequest
我做错了什么
更新:看起来我做错了,我希望Text::CSV::Slurp能够处理散列。因此,我推出了自己的:
my @cols;
my @row;
sub hash2cvs {
my $h = shift;
my $p = shift || 'top';
foreach my $k ( keys %{$h} ) {
if (ref $h->{$k} eq ref {}) {
hash2cvs( $h->{$k}, $k );
} else {
if ( $p eq 'top' ) {
push @cols, $k;
} else {
push @cols, "$p.$k";
}
push @row, $h->{$k};
}
}
}
my @cols;
my @row;
sub hash2cvs {
my $h = shift;
my $p = shift || 'top';
foreach my $k ( keys %{$h} ) {
if (ref $h->{$k} eq ref {}) {
hash2cvs( $h->{$k}, ($p eq 'top') ? $k : "$p.$k" );
} else {
if ( $p eq 'top' ) {
push @cols, $k;
} else {
push @cols, "$p.$k";
}
push @row, $h->{$k};
}
}
}
看起来我做错了,期待Text::CSV::Slurp处理散列。因此,我推出了自己的:
my @cols;
my @row;
sub hash2cvs {
my $h = shift;
my $p = shift || 'top';
foreach my $k ( keys %{$h} ) {
if (ref $h->{$k} eq ref {}) {
hash2cvs( $h->{$k}, $k );
} else {
if ( $p eq 'top' ) {
push @cols, $k;
} else {
push @cols, "$p.$k";
}
push @row, $h->{$k};
}
}
}
my @cols;
my @row;
sub hash2cvs {
my $h = shift;
my $p = shift || 'top';
foreach my $k ( keys %{$h} ) {
if (ref $h->{$k} eq ref {}) {
hash2cvs( $h->{$k}, ($p eq 'top') ? $k : "$p.$k" );
} else {
if ( $p eq 'top' ) {
push @cols, $k;
} else {
push @cols, "$p.$k";
}
push @row, $h->{$k};
}
}
}
数据::如果您向转储程序输出传递一个引用(例如打印转储程序\%hash);而不是打印转储程序%hash;很公平。更新的OPI如果要将包含对象的嵌套数据结构映射到平面CSV文件,则必须决定映射的工作方式。例如,是否希望将列命名为SPRequest\u xrelease、SPRequest\u macaddr、SPRequest\u name等等?对象应该如何字符串化?Text::CSV::Slurp怎么可能知道要如何将任意深度的数据结构映射到平面文件?这是没有标准的;如何将{foo=>bar=>[42,baz=>{qux=>17}]}表示为CSV?JSON规范包含数组和对象,因此更简单,尽管不是没有困难。@RedCricket:该站点使用一些自定义JavaScript创建嵌套JSON数据到CSV格式的任意映射。它是不可靠的,远不是一个标准,你不应该期望任何其他软件在任何语言复制它