问题描述
我无法以这种方式为转换为CSV的XML文件解析数据：
对于第一列，我想获取通用名称标签（recordingSystem，Port等）并将其与行标签中的subNames（closedFileCount，processedFileCount等）连接起来
子名称所在的标签不断变化，可能是“用法”，“ lwGuage”，“ hwGauge”等。我还需要收集它们并将其放在旁边的列中。
请参见下面的示例XML：
<?xml version="1.0" encoding="UTF-8"?>
<omGroups xmlns="urn:nortel:namespaces:mcp:oms" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:nortel:namespaces:mcp:oms OMSchema.xsd" >
<group>
<name>RecordingSystem</name>
<row>
<package>com.nortelnetworks.mcp.ne.base.recsystem.fw.system</package>
<class>RecSysFileomrow</class>
<usage name="closedFileCount" hasThresholds="true">
<measures>
closed file count
</measures>
<description>
This register counts the number
of closed files in the spool directory of a
particular stream and a particular system.
Files in the spool directory store the raw
OAM records where they are sent to the
Element Manager for formatting.
</description>
<notes>
Minor and major alarms
when the value of closedFileCount
exceeds certain thresholds. Configure
the threshold values for minor and major
alarms for this OM through engineering
parameters for minorBackLogCount and
majorBackLogCount,respectively. These
engineering parameters are grouped under
the parameter group of Log,OM,and
Accounting for the logs’ corresponding
system.
</notes>
</usage>
<usage name="processedFileCount" hasThresholds="true">
<measures>
Processed file count
</measures>
<description>
The register counts the number
of processed files in the spool directory of
a particular stream and a particular system.
Files in the spool directory store the raw
OAM records and then send the records to
the Element Manager for formatting.
</description>
</usage>
</row>
<documentation>
<description>
Rows of this OM group provide a count of the number of files contained
within the directory (which is the OM row key value).
</description>
<rowKey>
The full name of the directory containing the files counted by this row.
</rowKey>
</documentation>
<generatedOn>
<all/>
</generatedOn>
</group>
<group traffic="true">
<name>Ports</name>
<row>
<package>com.nortelnetworks.ims.cap.mediaportal.host</package>
<class>Portsomrow</class>
<usage name="rtpMpPortUsage">
<measures>
BCP port usage
</measures>
<description>
Meter showing number of ports in use.
</description>
</usage>
<lwGauge name="connMapEntriesLWM">
<measures>
Lowest simultaneous port usage
</measures>
<description>
Lowest number of
simultaneous ports detected to be in
use during the collection interval
</description>
</lwGauge>
<hwGauge name="connMapEntriesHWM">
<measures>
Highest simultaneous port usage
</measures>
<description>
Highest number of
simultaneous ports detected to be in
use during the collection interval.
</description>
</hwGauge>
<waterMark name="connMapEntries">
<measures>
Connections map entries
</measures>
<description>
Meter showing the number of connections in the host
cpu connection map.
</description>
<bwg lwref="connMapEntriesLWM" hwref="connMapEntriesHWM"/>
</waterMark>
<counter name="portUsageSampleCnt">
<measures>
Usage sample count
</measures>
<description>
The number of 100-second samples taken during the
collection interval contributing to the average report.
</description>
</counter>
<counter name="sampledRtpMpPortUsage">
<measures>
In-use ports usage
</measures>
<description>
Provides the sum of the in-use ports every 100 seconds.
</description>
</counter>
<precollector>
<package>com.nortelnetworks.ims.cap.mediaportal.host</package>
<class>PortsOMCenturyPrecollector</class>
<collector>centurySecond</collector>
</precollector>
</row>
<documentation>
<description>
</description>
<rowKey>
</rowKey>
</documentation>
<generatedOn>
<list>
<ne>sessmgr</ne>
<ne>rtpportal</ne>
</list>
</generatedOn>
</group>
</omGroups>
下面的代码应该获取GeneralName并将其正确显示在csv文件中，但是我无法显示任何内容。
from xml.etree import ElementTree
import csv
from copy import copy
import lxml.etree
tree = ElementTree.parse('OM.xml')
sitescope_data = open('OMFileConverted.csv','w',newline='',encoding='utf-8')
csvwriter = csv.writer(sitescope_data)
#Create all needed columns here in order and writes them to excel file
col_names = ['name','omregister']
csvwriter.writerow(col_names)
def recurse(root,props):
for child in root:
if child.tag == '{urn:nortel:namespaces:mcp:oms}group':
p2 = copy(props)
for event in root.findall('{urn:nortel:namespaces:mcp:oms}group'):
event_id = event.find('{urn:nortel:namespaces:mcp:oms}name')
if event_id != None:
p2['name'] = event_id.text
recurse(child,p2)
else:
recurse(child,props)
for event in root.findall('{urn:nortel:namespaces:mcp:oms}group'):
event_data = [props.get('name')]
csvwriter.writerow(event_data)
root = tree.getroot()
recurse(root,{}) #root + empty dictionary
sitescope_data.close()
解决方法
如果xml_string是问题的XML代码段，则此脚本：
import csv
from bs4 import BeautifulSoup
soup = BeautifulSoup(xml_string,'html.parser')
with open('data.csv','w',newline='') as f_out:
writer = csv.writer(f_out)
writer.writerow(['General name:SpecificName','RegisterType'])
for item in soup.select('row [name]'):
writer.writerow([item.find_previous('name').text + ':' + item['name'],item.name])
产生data.csv（来自LibreOffice的屏幕截图）：
编辑：要将measures标签放入一列，您可以执行以下操作：
import csv
from bs4 import BeautifulSoup
soup = BeautifulSoup(xml_string,'RegisterType','Measures'])
for item in soup.select('row [name]'):
writer.writerow([item.find_previous('name').text + ':' + item['name'],item.name,item.find('measures').get_text(strip=True)])
产生：
