Question

我的目标：我想抓住主题xml文档中名为“SECTION”的每个元素;获得每个SECTION及其下的所有内容。

约束：我必须使用LibXML Ruby;即，要求'xml'。

问题：输出数据被截断。

问题（请参阅输出file1.xml）：

为什么file1.xml中的输出被截断？注意：第一个文本之间的大部分内容 P（a）... / P标签（注意：截断从单词“ethic ...”开始）
为什么代码会丢弃最后两个P元素（P（b）...，P（2）...）和CITA元素？造成什么原因？xml version =“1.0” 编码= “UTF-8”？和SECTION /出现在输出的末尾？

注意：输出file2.xml有更严重的截断。我把它包括在内，以防它澄清任何事情。

以下是代码：

#!/usr/bin/ruby
require "xml"
reader = XML::Reader.file('infile2.xml')
while reader.read
  node = reader.node 
    if node.name == "SECTION"
      iteration = XML::Document.string(node.to_s)
      puts iteration
      puts "\n"
    end
end

输入file1.xml：

<?xml version="1.0"?>
<SECTION>
  <SECTNO>§ 0.735-1</SECTNO>
  <SUBJECT>Agency ethics officials.</SUBJECT>
  <P>(a) <E T="03">Designated Agency Ethics Official (DAEO).</E> The Assistant General Counsel (023) is the designated agency ethics official (DAEO) for the Department of Veterans Affairs. The Deputy Assistant General Counsel (023C) is the alternate DAEO, who is designated to act in the DAEO's absence. The DAEO has primary responsibility for the administration, coordination, and management of the VA ethics program, pursuant to 5 CFR 2638.201-204.</P>
  <P>(b) <E T="03">Deputy ethics officials.</E> (1) The Regional Counsel are deputy ethics officials. They have been delegated the authority to act for the DAEO within their jurisdiction, under the DAEO's supervision, pursuant to 5 CFR 2638.204.</P>
  <P>(2) The alternate DAEO, the DAEO's staff, and staff in the Offices of Regional Counsel, may also act as deputy ethics officials pursuant to delegations of one or more of the DAEO's duties from the DAEO or the Regional Counsel.</P>
  <CITA>[58 FR 61813, Nov. 23, 1993. Redesignated at 61 FR 11309, Mar. 20, 1996]</CITA>
</SECTION>

输出，给定输入file1.xml（上图）：

<?xml version="1.0" encoding="UTF-8"?>
<SECTION>
  <SECTNO>§ 0.735-1</SECTNO>
  <SUBJECT>Agency ethics officials.</SUBJECT>
  <P>(a) <E T="03">Designated Agency Ethics Official (DAEO).</E> The Assistant General Counsel (023) is the designated agency ethics official (DAEO) for the Department of Veterans Affairs. The Deputy Assistant General Counsel (023C) is the alternate DAEO, who is designated to act in the DAEO's absence. The DAEO has primary responsibility for the administration, coordination, and management of the VA ethic</P></SECTION>

<?xml version="1.0" encoding="UTF-8"?>
<SECTION/>

输入file2.xml：

<?xml version="1.0"?>
<SUBPART>
  <HD SOURCE="HED">Subpart A—General Provisions</HD>
  <SECTION>
    <SECTNO>§ 0.735-1</SECTNO>
    <SUBJECT>Agency ethics officials.</SUBJECT>
    <P>(a) <E T="03">Designated Agency Ethics Official (DAEO).</E> The Assistant General Counsel (023) is the designated agency ethics official (DAEO) for the Department of Veterans Affairs. The Deputy Assistant General Counsel (023C) is the alternate DAEO, who is designated to act in the DAEO's absence. The DAEO has primary responsibility for the administration, coordination, and management of the VA ethics program, pursuant to 5 CFR 2638.201-204.</P>
    <P>(b) <E T="03">Deputy ethics officials.</E> (1) The Regional Counsel are deputy ethics officials. They have been delegated the authority to act for the DAEO within their jurisdiction, under the DAEO's supervision, pursuant to 5 CFR 2638.204.</P>
    <P>(2) The alternate DAEO, the DAEO's staff, and staff in the Offices of Regional Counsel, may also act as deputy ethics officials pursuant to delegations of one or more of the DAEO's duties from the DAEO or the Regional Counsel.</P>
    <CITA>[58 FR 61813, Nov. 23, 1993. Redesignated at 61 FR 11309, Mar. 20, 1996]</CITA>
  </SECTION>
  <SECTION>
    <SECTNO>§ 0.735-2</SECTNO>
    <SUBJECT>Government-wide standards.</SUBJECT>
    <P>For government-wide standards of ethical conduct and related responsibilities for Federal employees, see 5 CFR Part 735 and Chapter XVI.</P>
    <CITA>[61 FR 11309, Mar. 20, 1996. Redesignated at 63 FR 33579, June 19, 1998]</CITA>
  </SECTION>
</SUBPART>

输出，给定输入file2.xml（上面）：

<?xml version="1.0" encoding="UTF-8"?>
<SECTION>
    <SECTNO>§ 0.735-1</SECTNO>
    <SUBJECT>Agency ethics officials.</SUBJECT>
    <P>(a) <E T="03">Designated Agency Ethics Official (DAEO).</E></P></SECTION>

<?xml version="1.0" encoding="UTF-8"?>
<SECTION/>

<?xml version="1.0" encoding="UTF-8"?>
<SECTION>
    <SECTNO>§ 0.735-2</SECTNO>
    <SUBJECT>Government-wide standards.</SUBJECT>
    <P>For government-wide standards of ethical conduct and related responsibilities for Federal employees, see 5 CFR Part 735 and Chapter XVI.</P>
    <CITA/></SECTION>

<?xml version="1.0" encoding="UTF-8"?>
<SECTION/>

Answer 1

除非你有一个巨大的XML文档，否则请考虑这样的事情：

require "xml"
doc = XML::Document.file('infile1.xml')
doc.find('/SECTION').each do |s|
  puts "[#{s}]"
end

输出：

<SECTION>
  <SECTNO>§ 0.735-1</SECTNO>
  <SUBJECT>Agency ethics officials.</SUBJECT>
  <P>(a) <E T="03">Designated Agency Ethics Official (DAEO).</E> The Assistant General Counsel (023) is the designated agency ethics official (DAEO) for the Department of Veterans Affairs. The Deputy Assistant General Counsel (023C) is the alternate DAEO, who is designated to act in the DAEO's absence. The DAEO has primary responsibility for the administration, coordination, and management of the VA ethics program, pursuant to 5 CFR 2638.201-204.</P>
  <P>(b) <E T="03">Deputy ethics officials.</E> (1) The Regional Counsel are deputy ethics officials. They have been delegated the authority to act for the DAEO within their jurisdiction, under the DAEO's supervision, pursuant to 5 CFR 2638.204.</P>
  <P>(2) The alternate DAEO, the DAEO's staff, and staff in the Offices of Regional Counsel, may also act as deputy ethics officials pursuant to delegations of one or more of the DAEO's duties from the DAEO or the Regional Counsel.</P>
  <CITA>[58 FR 61813, Nov. 23, 1993. Redesignated at 61 FR 11309, Mar. 20, 1996]</CITA>
</SECTION>

这不回答问题，而是解决方法。

我不确定使用阅读器的实际问题是什么，但我怀疑它与光标有关。例如，以下工作，delta，第一个XML文档还有一个额外的空部分：

if node.name == "SECTION"
  puts "#{reader.read_outer_xml}"
end

使用LibXML解析xml Ruby会截断数据

1 个答案: