我如何解析CDATA部分中的HTML标签的XML文件？ [英] How can i parse an XML file with HTML tags inside CDATA section?
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问题描述
<？xml version =1.0encoding =utf-8standalone =yes？>
< extendedinfo type =html>
<！[CDATA [< table class =ResultTablecellpadding = 2 cellspacing = 1 border = 0>< tr class =TableHeadingLine>< th bgcolor =＃b3b3b3align =测试用例：初始测试报告< / B>< font face =arial，verdana，trebuchet，officina，sans-serifsize =+ 2>< B>< < th class =TableHeadingLine>< th class =TableHeadingCellwidth =120px>< / th>< th class =TableHeadingCell < th class =345px>< th class =345px>< th class =345px>< th class =345px>< / th& < th class =TableHeadingCellwidth =345px>< / th>< th class =TableHeadingCellwidth =70px>< / th>< / tr>]>> ;
< / extendedinfo>
< extendedinfo type =html>
<！[CDATA [< tr>< td class =DefineCell> 58.675124< / td>< td class =DefaultCellcolspan =5>< i>< ; font_color =＃008000> Set_Temperature设置为23< / font><>< br> Set_Temperature = 23< / td>< / tr>]]>
< / extendedinfo>
我有一个由上述格式的工具生成的.XML文件，在CDATA部分。哪个解析器或者以什么方式可以从javax.xml文件中使用java检索html数据？解析方案
只需将CDATA作为文本内容进行访问
变体1（DOM）：
import java.io.的BufferedInputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
public void getCDATAFromHardcodedPathWithDom（）{
String yourSampleFile =/path/toYour/sample/file.xml;
String cdataNode =extendedinfo;
try（InputStream in =
new BufferedInputStream（new FileInputStream（yourSampleFile）））{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance（）;
DocumentBuilder builder = factory.newDocumentBuilder（）;
Document doc = builder.parse（in）;
NodeList元素= doc.getElementsByTagName（cdataNode）;
for（int i = 0; i< elements.getLength（）; i ++）{
Node e = elements.item（i）;
System.out.println（e.getTextContent（））;
}
} catch（Exception e）{
throw new RuntimeException（e）;
$ h $变种2（stax）：$ /
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamReader;
public void getCDATAFromHardcodedPathWithStax（）{
String yourSampleFile =/path/toYour/sample/file.xml;
String cdataNode =extendedinfo;
XMLStreamReader r = null;
try（InputStream in =
new BufferedInputStream（new FileInputStream（yourSampleFile））;）{
XMLInputFactory factory = XMLInputFactory.newInstance（）;
r = factory.createXMLStreamReader（in）;
while（r.hasNext（））{
switch（r.getEventType（））{
case XMLStreamConstants.START_ELEMENT：
if（cdataNode.equals（r.getName（） .getLocalPart（）））{
System.out.println（r.getElementText（））;
}
break;
默认值：
break;
}
r.next（）;
}
} catch（Exception e）{
throw new RuntimeException（e）;
} finally {
if（r！= null）{
try {
r.close（）;
} catch（Exception e）{
throw new RuntimeException（e）;
$ / code>
/path/toYour/sample/file.xml
<？xml version =1.0encoding =utf-8 standalone =yes？>
< root>
< extendedinfo type =html>
<！[CDATA [< table class =ResultTablecellpadding = 2 cellspacing = 1 border = 0>< tr class =TableHeadingLine>< th bgcolor =＃b3b3b3align =测试用例：初始测试报告< / B>< font face =arial，verdana，trebuchet，officina，sans-serifsize =+ 2>< B>< < th class =TableHeadingLine>< th class =TableHeadingCellwidth =120px>< / th>< th class =TableHeadingCell < th class =345px>< th class =345px>< th class =345px>< th class =345px>< / th& < th class =TableHeadingCellwidth =345px>< / th>< th class =TableHeadingCellwidth =70px>< / th>< / tr>]>> ;
< / extendedinfo>
< extendedinfo type =html>
<！[CDATA [< tr>< td class =DefineCell> 58.675124< / td>< td class =DefaultCellcolspan =5>< i>< ; font_color =＃008000> Set_Temperature设置为23< / font><>< br> Set_Temperature = 23< / td>< / tr>]]>
< / extendedinfo>
< / root>
它会给你
pre > < table class =ResultTablecellpadding = 2 cellspacing = 1 border = 0>< tr class =TableHeadingLine>< th bgcolor =＃b3b3b3align =leftcolspan =6>< font face =arial，verdana，trebuchet，officina，sans-serifsize =+ 2>< B> Testcase：Init Testreport< / B>< / font>< < th class>< / tr>< tr class =TableHeadingLine>< th class =TableHeadingCellwidth =120px>< >< th class =TableHeadingCellwidth =80px>< / th>< th class =TableHeadingCellwidth =345px>< / th><< ; th class =TableHeadingCellwidth =345px>< / th>< th class =TableHeadingCellwidth =70px>< / th>< / tr>
< tr>< td class =DefineCell> 58.675124< / td>< td class =DefaultCellcolspan =5>< i> ;< font color =＃008000> Set_Temperature设置为23< / font>< / i>< br> Set_Temperature = 23< / td>< / tr>
使用JAXB的一个有趣的选择在这里给出：
<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
<extendedinfo type="html">
<![CDATA[<table class="ResultTable" cellpadding=2 cellspacing=1 border=0><tr class="TableHeadingLine"><th bgcolor="#b3b3b3" align="left" colspan="6"><font face="arial, verdana, trebuchet, officina, sans-serif" size="+2"><B>Testcase: Init Testreport</B></font></th></tr><tr class="TableHeadingLine"><th class="TableHeadingCell" width="120px"></th><th class="TableHeadingCell" width="120px"></th><th class="TableHeadingCell" width="80px"></th><th class="TableHeadingCell" width="345px"></th><th class="TableHeadingCell" width="345px"></th><th class="TableHeadingCell" width="70px"></th></tr>]]>
</extendedinfo>
<extendedinfo type="html">
<![CDATA[<tr><td class="DefineCell">58.675124</td><td class="DefaultCell" colspan="5"><i><font color="#008000">Set_Temperature is set to 23</font></i><br>Set_Temperature = 23</td></tr>]]>
</extendedinfo>
I have a .XML file generated by a tool in the above format, with html data within CDATA sections. Which parser or in what way can I retrieve the html data from the XMLfile using java?
解决方案
Just access the CDATA as text content
Variant 1 (DOM):
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
public void getCDATAFromHardcodedPathWithDom() {
String yourSampleFile = "/path/toYour/sample/file.xml";
String cdataNode = "extendedinfo";
try (InputStream in =
new BufferedInputStream(new FileInputStream(yourSampleFile))) {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = builder.parse(in);
NodeList elements = doc.getElementsByTagName(cdataNode);
for (int i = 0; i < elements.getLength(); i++) {
Node e = elements.item(i);
System.out.println(e.getTextContent());
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
Variant 2 (stax):
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamReader;
public void getCDATAFromHardcodedPathWithStax() {
String yourSampleFile = "/path/toYour/sample/file.xml";
String cdataNode = "extendedinfo";
XMLStreamReader r = null;
try (InputStream in =
new BufferedInputStream(new FileInputStream(yourSampleFile));) {
XMLInputFactory factory = XMLInputFactory.newInstance();
r = factory.createXMLStreamReader(in);
while (r.hasNext()) {
switch (r.getEventType()) {
case XMLStreamConstants.START_ELEMENT:
if (cdataNode.equals(r.getName().getLocalPart())) {
System.out.println(r.getElementText());
}
break;
default:
break;
}
r.next();
}
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
if (r != null) {
try {
r.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
}
With /path/toYour/sample/file.xml
<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
<root>
<extendedinfo type="html">
<![CDATA[<table class="ResultTable" cellpadding=2 cellspacing=1 border=0><tr class="TableHeadingLine"><th bgcolor="#b3b3b3" align="left" colspan="6"><font face="arial, verdana, trebuchet, officina, sans-serif" size="+2"><B>Testcase: Init Testreport</B></font></th></tr><tr class="TableHeadingLine"><th class="TableHeadingCell" width="120px"></th><th class="TableHeadingCell" width="120px"></th><th class="TableHeadingCell" width="80px"></th><th class="TableHeadingCell" width="345px"></th><th class="TableHeadingCell" width="345px"></th><th class="TableHeadingCell" width="70px"></th></tr>]]>
</extendedinfo>
<extendedinfo type="html">
<![CDATA[<tr><td class="DefineCell">58.675124</td><td class="DefaultCell" colspan="5"><i><font color="#008000">Set_Temperature is set to 23</font></i><br>Set_Temperature = 23</td></tr>]]>
</extendedinfo>
</root>
It will give you
<table class="ResultTable" cellpadding=2 cellspacing=1 border=0><tr class="TableHeadingLine"><th bgcolor="#b3b3b3" align="left" colspan="6"><font face="arial, verdana, trebuchet, officina, sans-serif" size="+2"><B>Testcase: Init Testreport</B></font></th></tr><tr class="TableHeadingLine"><th class="TableHeadingCell" width="120px"></th><th class="TableHeadingCell" width="120px"></th><th class="TableHeadingCell" width="80px"></th><th class="TableHeadingCell" width="345px"></th><th class="TableHeadingCell" width="345px"></th><th class="TableHeadingCell" width="70px"></th></tr>
<tr><td class="DefineCell">58.675124</td><td class="DefaultCell" colspan="5"><i><font color="#008000">Set_Temperature is set to 23</font></i><br>Set_Temperature = 23</td></tr>
An interesting alternative using JAXB is given here:
An example on how to extract just all CDATA is given here:
Unable to check CDATA in XML using XMLEventReader in Stax
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