我有一个XML,如下所示。我想在<com.eds.travel.fares.ping.response>
和</com.eds.travel.fares.ping.response>
之间提取文字。 XML以com.eds.travel.fares.ping.response
开头,以com.eds.travel.fares.ping.response
结尾。
<?xml version="1.0" encoding="UTF-8"?>
<!--This is a Ping Response-->
<com.eds.travel.fares.ping.response xmlns="http://schemas.eds.com/transportation/message/ping/response" targetNamespace="http://schemas.eds.com/transportation/message/ping/response" EchoToken="00c0d1a" TimeStamp="2016-06-21T00:01:48.191" Target="Test" Version="1.07" SequenceNmbr="1466467309030" PrimaryLangID="en" RequestorCompanyCode="1y" RequestorNetworkID="as" SetLocation="zrh">
<Headers Trailers="n">
<Result xmlns="http://schemas.eds.com/transportation/message/fares/common" status="success" />
</Headers>
<DataArea>
<Pong Message="pong" ServerHostName="usclsefam922.clt.travel.eds.com" ServerPortNumber="8024" ServerMessageCount="1" RegionName="preprod" SystemName="preprods3.1" SystemDate="20160621" SystemTime="148" CodeVersion="$Name: build-2016-06-17-1338 $" />
</DataArea>
<Trailers />
</com.eds.travel.fares.ping.response>
我尝试使用下面的命令,但没有运气:
cat file.txt | egrep "<com.eds.travel.fares.ping.response>.*</com.eds.travel.fares.ping.response>"
请告知。
答案 0 :(得分:0)
根据我的尝试,似乎egrep无法匹配多行,您可以使用pcregrep -M代替
pcregrep -M 'com.eds.travel.fares.ping.response((.|\n)*)com.eds.travel.fares.ping.response'
为我做了伎俩
答案 1 :(得分:0)
XML规则之一。不要使用正则表达式。 XML是一种上下文语言,正则表达式不能这样做。你将会遇到一个很脆弱的黑客攻击,并且当XML以完美有效的方式改变时,有一天会神秘地破解。
相反,请使用解析器。 Perl有几种选择 - 我碰巧喜欢XML::Twig
作为一个很好的起点(XML::LibXML
也很出色,但学习曲线更陡峭。)
为此,您只需要:
#!usr/bin/perl
use strict;
use warnings;
use XML::Twig;
my $twig = XML::Twig -> new ( comments => 'drop' )->parse ( \*DATA );
$twig -> set_pretty_print('indented_a');
$twig -> get_xpath('//com.eds.travel.fares.ping.response',0 ) -> print;
__DATA__
<?xml version="1.0" encoding="UTF-8"?>
<!--This is a Ping Response-->
<com.eds.travel.fares.ping.response xmlns="http://schemas.eds.com/transportation/message/ping/response" targetNamespace="http://schemas.eds.com/transportation/message/ping/response" EchoToken="00c0d1a" TimeStamp="2016-06-21T00:01:48.191" Target="Test" Version="1.07" SequenceNmbr="1466467309030" PrimaryLangID="en" RequestorCompanyCode="1y" RequestorNetworkID="as" SetLocation="zrh">
<Headers Trailers="n">
<Result xmlns="http://schemas.eds.com/transportation/message/fares/common" status="success" />
</Headers>
<DataArea>
<Pong Message="pong" ServerHostName="usclsefam922.clt.travel.eds.com" ServerPortNumber="8024" ServerMessageCount="1" RegionName="preprod" SystemName="preprods3.1" SystemDate="20160621" SystemTime="148" CodeVersion="$Name: build-2016-06-17-1338 $" />
</DataArea>
<Trailers />
</com.eds.travel.fares.ping.response>
此输出 - 按要求:
<com.eds.travel.fares.ping.response
EchoToken="00c0d1a"
PrimaryLangID="en"
RequestorCompanyCode="1y"
RequestorNetworkID="as"
SequenceNmbr="1466467309030"
SetLocation="zrh"
Target="Test"
TimeStamp="2016-06-21T00:01:48.191"
Version="1.07"
targetNamespace="http://schemas.eds.com/transportation/message/ping/response"
xmlns="http://schemas.eds.com/transportation/message/ping/response">
<Headers Trailers="n">
<Result
status="success"
xmlns="http://schemas.eds.com/transportation/message/fares/common"
/>
</Headers>
<DataArea>
<Pong
CodeVersion="$Name: build-2016-06-17-1338 $"
Message="pong"
RegionName="preprod"
ServerHostName="usclsefam922.clt.travel.eds.com"
ServerMessageCount="1"
ServerPortNumber="8024"
SystemDate="20160621"
SystemName="preprods3.1"
SystemTime="148"
/>
</DataArea>
<Trailers/>
</com.eds.travel.fares.ping.response>
基本上所有的XML,更少的标题和注释。从技术上讲,你要求的是什么,但有点微不足道。虽然注意重新格式化 - 重新格式化XML 完全有效。这就是基于regex
的解决方案破解的原因。
那么如何:
#!usr/bin/perl
use strict;
use warnings;
use XML::Twig;
my $twig = XML::Twig -> parsefile ( 'file.txt' );
foreach my $pong ( $twig -> get_xpath('//Pong' ) ) {
foreach my $key( keys %{$pong -> atts} ) {
print "$key => ", $pong -> att($key),"\n";
}
}
与您的源数据相关,打印:
CodeVersion => $Name: build-2016-06-17-1338 $
RegionName => preprod
SystemTime => 148
ServerHostName => usclsefam922.clt.travel.eds.com
SystemDate => 20160621
SystemName => preprods3.1
ServerMessageCount => 1
ServerPortNumber => 8024
Message => pong