我想像这样转换XML:
<account>Wally World</account>
<city>Anywhere</city>
<state>CA</state>
通过用等号和单引号(即=''
)包装每个元素来实现此目的<account>='Wally World'</account>
<city>='Anywhere'</city>
<state>='CA'</state>
需要使用Java转换大型XML文件中的所有元素文本,可能使用XSLT吗?
答案 0 :(得分:2)
在XSLT中,它可能是这样的:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:template match="account|city|state">
<xsl:element name="{local-name(.)}">
<xsl:text disable-output-escaping="yes">='</xsl:text>
<xsl:value-of select="text()"/>
<xsl:text disable-output-escaping="yes">'</xsl:text>
</xsl:element>
</xsl:template>
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
请注意,它只会更改帐户,城市和州元素,并保留所有其他元素。所以这样的文件:
<items>
<item>
<account>Wally World</account>
<city>Anywhere</city>
<state>CA</state>
</item>
</items>
......会变成这样:
<items>
<item>
<account>='Wally World'</account>
<city>='Anywhere'</city>
<state>='CA'</state>
</item>
</items>
答案 1 :(得分:1)
如果您只想使用SAX进行此类简单更改,请输入以下代码:
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLFilterImpl;
import org.xml.sax.helpers.XMLReaderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.sax.SAXSource;
import javax.xml.transform.sax.SAXTransformerFactory;
import javax.xml.transform.stream.StreamResult;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
public class XMLPipeline {
public static void main(String[] args) throws Exception {
String inputFile = "a.xml";
PrintStream outputStream = System.out;
new XMLPipeline().process(inputFile, outputStream);
}
//default JDK
public void process(String inputFile, OutputStream outputStream) throws
SAXException, ParserConfigurationException, IOException, TransformerException {
StreamResult xwriter = new StreamResult(outputStream);
XMLReader xreader = XMLReaderFactory.createXMLReader();
XMLAnalyzer analyzer = new XMLAnalyzer(xreader);
TransformerFactory stf = SAXTransformerFactory.newInstance();
SAXSource ss = new SAXSource(analyzer, new InputSource(inputFile));
stf.newTransformer().transform(ss, xwriter);
}
public static class XMLAnalyzer extends XMLFilterImpl {
private Set<String> tags = new HashSet<String>(Arrays.asList("account", "city", "state"));
boolean bufferText = false;
StringBuilder buffer;
public XMLAnalyzer(XMLReader xmlReader) {
super(xmlReader);
}
@Override
public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException {
super.startElement(uri, localName, qName, atts);
if (tags.contains(localName)) {
buffer = new StringBuilder("='");
bufferText = true;
}
}
@Override
public void characters(char[] chars, int i, int i1) throws SAXException {
if (bufferText) {
buffer.append(chars, i, i1);
} else {
super.characters(chars, i, i1);
}
}
@Override
public void endElement(String s, String s1, String s2) throws SAXException {
if (bufferText) {
buffer.append('\'');
super.characters(buffer.toString().toCharArray(), 0, buffer.length());
bufferText = false;
}
super.endElement(s, s1, s2);
}
}
}