JAVA读取XML并打印

在G盘下新建XML文档：person.xml，XML代码：

<?xml version="1.0" encoding="utf-8"?>

<students>

  <student id="1">

    <name>a</name>

    <sex>男</sex>

    <age>18</age>

  </student>

  <student id="2">

    <name>b</name>

    <sex>女</sex>

    <age>16</age>

  </student>

</students>

读取XML文件并打印，代码如下：

package jichu;

import java.io.StringWriter;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.transform.OutputKeys;

import javax.xml.transform.Source;

import javax.xml.transform.Transformer;

import javax.xml.transform.TransformerFactory;

import javax.xml.transform.dom.DOMSource;

import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Document;

public class XmlPrinter {

    public static String xmlPrintFromFileName(String FileName) {

        String xml = "";

        try {

            DocumentBuilderFactory factory = DocumentBuilderFactory

                    .newInstance();

            DocumentBuilder builder = factory.newDocumentBuilder();

            Document document = builder.parse(FileName);

            Source oldData = new DOMSource(document);

            StreamResult newData = new StreamResult(new StringWriter());

            Transformer transformer = TransformerFactory.newInstance()

                    .newTransformer();

            transformer.setOutputProperty(OutputKeys.INDENT, "yes");

            transformer.setOutputProperty(

                    "{http://xml.apache.org/xslt}indent-amount", "2");

            transformer.transform(oldData, newData);

            xml = newData.getWriter().toString();

        } catch (Exception e) {

            e.printStackTrace();

        }

        return xml;

    }

}

测试代码：

package jichu;

public class MainClass {

    public static void main(String[] args) {

        String xml = XmlPrinter.xmlPrintFromFileName("G:\\person.xml");

        System.out.println(xml);

    }

}

打印：

<?xml version="1.0" encoding="utf-8" standalone="no"?>

<students>

  <student id="1">

    <name>a</name>

    <sex>男</sex>

    <age>18</age>

  </student>

  <student id="2">

    <name>b</name>

    <sex>女</sex>

    <age>16</age>

  </student>

</students>

读取XML字符串，格式化后打印，代码如下：

package jichu;

import java.io.StringReader;

import java.io.StringWriter;

import javax.xml.transform.OutputKeys;

import javax.xml.transform.Source;

import javax.xml.transform.Transformer;

import javax.xml.transform.TransformerFactory;

import javax.xml.transform.stream.StreamResult;

import javax.xml.transform.stream.StreamSource;

public class XmlPrinter {

    public static String xmlPrintFromString(String xmlString) {

        String xml = "";

        try {

            StringReader reader = new StringReader(xmlString);

            Source oldData = new StreamSource(reader);

            StreamResult newData = new StreamResult(new StringWriter());

            Transformer transformer = TransformerFactory.newInstance()

                    .newTransformer();

            transformer.setOutputProperty(OutputKeys.INDENT, "yes");

            transformer.setOutputProperty(

                    "{http://xml.apache.org/xslt}indent-amount", "2");

            transformer.transform(oldData, newData);

            xml = newData.getWriter().toString();

        } catch (Exception e) {

            e.printStackTrace();

        }

        return xml;

    }

}

测试：

package jichu;

public class MainClass {

    public static void main(String[] args) {

        String xml = "<a><b></b><c/><d>text</d></a>";

        System.out.println(XmlPrinter.xmlPrintFromString(xml));

    }

}

打印：

<?xml version="1.0" encoding="UTF-8"?>

<a>

  <b/>

  <c/>

  <d>text</d>

</a>

JAVA读取XML并打印的相关教程结束。