Jaxb – Marshall – 如何格式化xml属性 – 例如,在每个属性后面添加换行符

我正在尝试找到一种格式化xml的方法,以便每个属性都在一个新行中.

OutputFormat of = new OutputFormat();
        of.setIndent(4);
        XMLSerializer serializer = new XMLSerializer(of);
        Writer stringWriter = new StringWriter();
        serializer.setOutputCharStream(stringWriter);

        marshaller.marshal(target,serializer.asContentHandler());
        results = stringWriter.toString();

我想要这个：

<blablabla isGood="false" newInstance="false" id="cse_a"
    deleted="false" name="cse_a"
    xmlns:blabla="http://www.blabla.com">

    <Description><![CDATA[]]></Description>
    <Name><![CDATA[A]]></Name>

</blablabla>

看起来像这样：

<blablabla isGood="false"
           newInstance="false"
           id="cse_a"
           deleted="false"
           name="cse_a"
           xmlns:blabla="http://www.blabla.com">

    <Description><![CDATA[]]></Description>
    <DisplayName><![CDATA[A]]></DisplayName>

</blablabla>

谢谢！

用ContentHandler作为Blaise Doughan答案的一个例子：

import java.io.IOException;
import java.io.Writer;

import org.apache.commons.lang3.StringUtils;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

public class WriteOutContentHandler extends DefaultHandler
{

    private static final String NEWLINE = System.getProperty("line.separator");
    private static final String INDENT = "  ";

    private Writer _writer;
    private int depth = 0;

    public WriteOutContentHandler(Writer writer)
    {
        _writer = writer;
    }

    @Override
    public void characters(char[] ch,int start,int length)
            throws SAXException
    {
        try
        {
            _writer.write(ch,start,length);
        } catch (IOException e)
        {
            throw new SAXException("Error writing out character content",e);
        }
    }

    @Override
    public void ignorableWhitespace(char[] ch,e);
        }
    }

    @Override
    public void endDocument() throws SAXException
    {
        try
        {
            _writer.flush();
        } catch (IOException e)
        {
            throw new SAXException("Error flushing character output",e);
        }
    }

    @Override
    public String toString()
    {
        return _writer.toString();
    }

    @Override
    public void startElement(String uri,String localName,String qName,Attributes attrs) throws SAXException
    {
        write(NEWLINE);
        write(StringUtils.repeat(INDENT,depth));
        depth++;

        String eName = localName;

        if ("".equals(eName))
        {
            eName = qName;
        }

        write("<" + eName);

        if (attrs != null)
        {
            for (int i = 0; i < attrs.getLength(); i++)
            {
                String attrName = attrs.getLocalName(i);

                if ("".equals(attrName))
                {
                    attrName = attrs.getQName(i);
                }

                write(NEWLINE);
                write(StringUtils.repeat(INDENT,depth));
                write(attrName);

                write("=\"");
                write(attrs.getValue(i));
                write("\"");
            }
        }

        if (attrs.getLength() > 0)
        {
            write(NEWLINE);
            write(StringUtils.repeat(INDENT,depth-1));
        }

        write(">");
    }

    @Override
    public void endElement(String namespaceURI,String sName,String qName) throws SAXException
    {
        write(NEWLINE);
        depth--;
        write(StringUtils.repeat(INDENT,depth));

        String eName = sName;
        if ("".equals(eName))
        {
            eName = qName;
        }
        write("</" + eName + ">");
    }

    private void write(String s) throws SAXException
    {
        try
        {
            _writer.write(s);
            _writer.flush();
        } catch (IOException e)
        {
            throw new SAXException("I/O error",e);
        }
    }
}

用法：

StringWriter writer = new StringWriter();
    JAXBContext jc = JAXBContext.newInstance(MODEL);
    Marshaller marshaller = jc.createMarshaller();
    marshaller.marshal(node,new WriteOutContentHandler(writer));

    return writer.toString();

原文链接：https://www.f2er.com/xml/452464.html

Jaxb – Marshall – 如何格式化xml属性 – 例如,在每个属性后面添加换行符

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