文件准备
首先把要提取的xml文件放到C盘根目录下(目录如果改了,代码中也需要相应的改一下)
把jar包加入到idea中的方法请参考另一篇文章JAVA使用XPath和XQuary查询xml文件
第一种方法 staxon
需要的jar包为staxon
具体的代码如下:
import de.odysseus.staxon.json.JsonXMLConfig;
import de.odysseus.staxon.json.JsonXMLConfigBuilder;
import de.odysseus.staxon.json.JsonXMLInputFactory;
import de.odysseus.staxon.json.JsonXMLOutputFactory;
import de.odysseus.staxon.xml.util.PrettyXMLEventWriter;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLEventWriter;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.io.File;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class DataTransformation {
public static void main(String[] args) {
//上传文件转换为String
String fileString = loadFile("C:/test.xml");
//转换为json并打印
String jsonString = xmlToJson(fileString);
System.out.println(jsonString);
//转换为xml并打印
String xmlString = jsonToXml(jsonString);
System.out.println(xmlString);
}
/**
*
* @param url
* @return
*/
public static String loadFile(String url) {
try {
File fileinput = new File(url);
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc = dBuilder.parse(fileinput);
DOMSource domSource = new DOMSource(doc);
StringWriter writer = new StringWriter();
StreamResult result = new StreamResult(writer);
TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
transformer.transform(domSource, result);
return writer.toString();
} catch (ParserConfigurationException e