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xml格式化,xml格式化代码

余寿 2022-10-26 阅读 130

import org.apache.xml.serialize.OutputFormat;
  import org.apache.xml.serialize.OutputFormat;
  import org.apache.xml.serialize.XMLSerializer;
  import org.w3c.dom.Document;
  import org.xml.sax.InputSource;
  import org.xml.sax.SAXException;
  import javax.xml.parsers.DocumentBuilder;
  import javax.xml.parsers.DocumentBuilderFactory;
  import javax.xml.parsers.ParserConfigurationException;
  import java.io.IOException;
  import java.io.StringReader;
  import java.io.StringWriter;
  import java.io.Writer;
  public class XmlFormatter {
  public String format(String unformattedXml) {
  try {
  final Document document=parseXmlFile(unformattedXml);
  OutputFormat format=new OutputFormat(document);
  format.setLineWidth(65);
  format.setIndenting(true);
  format.setIndent(2);
  Writer out=new StringWriter();
  XMLSerializer serializer=new XMLSerializer(out, format);
  serializer.serialize(document);
  return out.toString();
  } catch (IOException e) {
  throw new RuntimeException(e);
  }
  }
  private Document parseXmlFile(String in) {
  try {
  DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();
  DocumentBuilder db=dbf.newDocumentBuilder();
  InputSource is=new InputSource(new StringReader(in));
  return db.parse(is);
  } catch (ParserConfigurationException e) {
  throw new RuntimeException(e);
  } catch (SAXException e) {
  throw new RuntimeException(e);
  } catch (IOException e) {
  throw new RuntimeException(e);
  }
  }
  public static void main(String[] args) throws Exception{

  System.out.println(new XmlFormatter().format(s));
  }
  }

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