我的 xsl 样式表生成一个具有多个根的 xml 文件

Question

我在使用 xslt 样式表解析 xml 文件时遇到问题 http://docs.oracle.com/javase/tutorial/jaxp/xslt/transformingXML.html 我在样式器代码中进行了一些更改以输入多个 xml 文件 （（只是给你一个好的背景））

一切正常，但根被重复了！

这是我的 xsl 代码：

<?xml version="1.0" encoding="UTF-8"?>
 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"  xmlns:exsl="http://exslt.org/common"
 extension-element-prefixes="exsl" version="1.0">

 <xsl:output method="xml" omit-xml-declaration="yes"/>

 <xsl:template match="/">
 <xsl:text>&#xa;</xsl:text>
 <request campus="UQU" year="2013" term="second">
 <xsl:for-each select="/SIS_REP070/LIST_G_STUDENT_ID/G_STUDENT_ID">
 .
 .
 .
 <xsl:for-each select="document('sis_rep413b_anon.xml')/MODULE1/LIST_G_STUDENT_ID/G_STUDENT_ID[STUDENT_ID=$varID]">
 .
 .
 .
 <xsl:for-each select="document('sis_rep814.xml')/SIS_REP814/LIST_DEGREE_PLANS/DEGREE_PLANS[EDITION1=57][TOTAL_HRS=160]/LIST_G_COURSE_LEVEL/G_COURSE_LEVEL/LIST_G_COURSE_CODE/G_COURSE_CODE">
 .
 .
 .
 </xsl:for-each>
 </request>
 </xsl:template>
</xsl:stylesheet>

如您所见，我正在几个 xml 上实现此样式表

所以根输出 x 次（x= xml 输入文件）

这是输出的样子：

 <request campus="UQU" year="2013" term="second">

 <student key="42701646">
 <name first="فؤاد" last="خوج"/><MAX>0</MAX>
 <acadArea abbv="CSandISG"><major code="143100"/></acadArea>

 <updateCourseRequests commit="true">
 <courseOffering1 subjectArea="RELg" courseNumber="16312012" priority="19981.921" credit="2"/>
  </updateCourseRequests></student>
  .
  .
  .
  .
   </request>
   <request campus="UQU" year="2013" term="second"/>
   <request campus="UQU" year="2013" term="second"/>
   <request campus="UQU" year="2013" term="second"/>

根“请求”被打印了三遍！:( 因为我输入了四个xml文件 这是我在命令提示符下写的命令：

java Stylizer data/file1.xsl data/file1.xml data/file2.xml data/file3.xml data/file4.xml

原始造型器：

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.w3c.dom.Document;
import org.w3c.dom.DOMException;

// For write operation
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamSource;
import javax.xml.transform.stream.StreamResult;
import java.io.*;


public class Stylizer {
// Global value so it can be ref'd by the tree-adapter
static Document document;

public static void main(String[] argv) {
    if (argv.length != 2) {
        System.err.println("Usage: java Stylizer stylesheet xmlfile");
        System.exit(1);
    }

    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

    //factory.setNamespaceAware(true);
    //factory.setValidating(true);
    try {
        File stylesheet = new File(argv[0]);
        File datafile = new File(argv[1]);

        DocumentBuilder builder = factory.newDocumentBuilder();
        document = builder.parse(datafile);

        // Use a Transformer for output
        TransformerFactory tFactory = TransformerFactory.newInstance();
        StreamSource stylesource = new StreamSource(stylesheet);
        Transformer transformer = tFactory.newTransformer(stylesource);

        DOMSource source = new DOMSource(document);
        StreamResult result = new StreamResult(System.out);
        transformer.transform(source, result);
    } catch (TransformerConfigurationException tce) {
        // Error generated by the parser
        System.out.println("\n** Transformer Factory error");
        System.out.println("   " + tce.getMessage());

        // Use the contained exception, if any
        Throwable x = tce;

        if (tce.getException() != null) {
            x = tce.getException();
        }

        x.printStackTrace();
    } catch (TransformerException te) {
        // Error generated by the parser
        System.out.println("\n** Transformation error");
        System.out.println("   " + te.getMessage());

        // Use the contained exception, if any
        Throwable x = te;

        if (te.getException() != null) {
            x = te.getException();
        }

        x.printStackTrace();
    } catch (SAXException sxe) {
        // Error generated by this application
        // (or a parser-initialization error)
        Exception x = sxe;

        if (sxe.getException() != null) {
            x = sxe.getException();
        }

        x.printStackTrace();
    } catch (ParserConfigurationException pce) {
        // Parser with specified options can't be built
        pce.printStackTrace();
    } catch (IOException ioe) {
        // I/O error
        ioe.printStackTrace();
    }
} // main
}

修改后：

 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.parsers.FactoryConfigurationError;
 import javax.xml.parsers.ParserConfigurationException;
 import org.xml.sax.SAXException;
 import org.xml.sax.SAXParseException;
 import org.w3c.dom.Document;
 import org.w3c.dom.DOMException;

 // For write operation
 import javax.xml.transform.Transformer;
 import javax.xml.transform.TransformerException;
 import javax.xml.transform.TransformerFactory;
 import javax.xml.transform.TransformerConfigurationException;
 import javax.xml.transform.dom.DOMSource;
 import javax.xml.transform.stream.StreamSource;
 import javax.xml.transform.stream.StreamResult;
 import java.io.*;


public class Stylizer {


public static void main(String[] argv) {
    if (argv.length < 2) {
        System.err.println("Usage: java Stylizer stylesheet xmlfile");
        System.exit(1);
    }


    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

    //factory.setNamespaceAware(true);
    //factory.setValidating(true);
    try {
        File stylesheet = new File(argv[0]);
        File [] fileList = new File[argv.length];

        for(int i=1 ; i<argv.length ; i++)
            fileList[i] = new File(argv[i]);

        String targetExtension = ".xml";  
        int extIndex = argv[0].lastIndexOf(".");  
        String ext = argv[0].substring(extIndex);  
        argv[0] = argv[0].substring(0, extIndex) + targetExtension;  
        File outputname = new File(argv[0]);

        DocumentBuilder builder = factory.newDocumentBuilder();
        Document [] document = new Document[argv.length];

        for(int i=1 ; i<argv.length ; i++)
            document[i] = builder.parse(fileList[i]);

        // Use a Transformer for output
        TransformerFactory tFactory = TransformerFactory.newInstance();
        StreamSource stylesource = new StreamSource(stylesheet);
        Transformer transformer = tFactory.newTransformer(stylesource);

        DOMSource [] source = new DOMSource [argv.length];
        for(int i=1 ; i<argv.length ; i++)
            source[i] = new DOMSource(document[i]);

        FileOutputStream outputStream = new FileOutputStream((File)outputname);

        StreamResult result = new StreamResult(outputStream);
        for(int i=1 ; i<argv.length ; i++)
            transformer.transform(source[i], result);

    } catch (TransformerConfigurationException tce) {
        // Error generated by the parser
        System.out.println("\n** Transformer Factory error");
        System.out.println("   " + tce.getMessage());

        // Use the contained exception, if any
        Throwable x = tce;

        if (tce.getException() != null) {
            x = tce.getException();
        }

        x.printStackTrace();
    } catch (TransformerException te) {
        // Error generated by the parser
        System.out.println("\n** Transformation error");
        System.out.println("   " + te.getMessage());

        // Use the contained exception, if any
        Throwable x = te;

        if (te.getException() != null) {
            x = te.getException();
        }

        x.printStackTrace();
    } catch (SAXException sxe) {
        // Error generated by this application
        // (or a parser-initialization error)
        Exception x = sxe;

        if (sxe.getException() != null) {
            x = sxe.getException();
        }

        x.printStackTrace();
    } catch (ParserConfigurationException pce) {
        // Parser with specified options can't be built
        pce.printStackTrace();
    } catch (IOException ioe) {
        // I/O error
        ioe.printStackTrace();
    }
} // main
}

Answer 1

您可以通过将样式表文件的名称更改为以.xml 结尾来创建一个新文件outputname。

您将此文件用于一个名为 outputStream 的新 FileOutputStream。

然后，您将此输出流用于名为 result 的新 StreamResult。

最后，您使用相同的结果流转换每个源 XML 文件。

转换器正在按照您所说的那样做：它独立地转换每个 DOM 源并将每个源的结果放在同一个位置。

不清楚您的期望。您希望以某种方式将输出组合成单个 XML 文档吗？如果是这样，那么您必须说如何将它们组合在一起。

您是否使用四个命令行 XML 文件以及作为 XSLT 样式表中document 调用中的其他两个 XML 文件？六个 XML 文件要合并为一个文件实在是太多了！

如果您想要四个独立的转换，那么您必须创建四个不同的输出文件并将每个转换的输出发送到不同的位置。