java写xml格式化输出

谁践踏了优雅 2023-06-23 13:13 15阅读 0赞

import com.sun.org.apache.xml.internal.serialize.OutputFormat;
    import com.sun.org.apache.xml.internal.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;
    
    /**
     * Created by IntelliJ IDEA.
     * User: zcl
     * Date: 12-12-19
     * Time: 上午11:13
     */
    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{
            String s = "<Cube name=\"1\" cache=\"false\" enabled=\"true\">\n" +
                    "  <Table name=\"1\">" +
                    " </Table>\n" +
                    "<Dimension name=\"sale\" type=\"standardDimension\" foreignKey=\"sale_id\" caption=\"\">" +
                    "</Dimension>" +
                    "</Cube>";//未格式化前的xml
    
            String s1 = "<PARAM><DBID>35</DBID><SEQUENCE>atgtca</SEQUENCE><MAXNS>10</MAXNS><MINIDENTITIES>90</MINIDENTITIES><MAXEVALUE>10</MAXEVALUE><USERNAME>admin</USERNAME><PASSWORD>111111</PASSWORD><TYPE>P</TYPE><RETURN_TYPE>2</RETURN_TYPE></PARAM>";//未格式化前的xml
    
            System.out.println(new XmlFormatter().format(s));
    
        }
    }