xmltransformutil.java

中国移动定位引擎的客户端

package ffcs.util;

import java.io.InputStream;
import java.io.OutputStreamWriter;
import java.io.StringWriter;
import java.io.IOException;

import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.Transformer;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.xml.sax.SAXException;
import org.apache.crimson.tree.XmlDocument;

import javax.xml.parsers.DocumentBuilder;


public class XmlTransformUtil {

    public static Document builerDocument(InputStream is) throws
            ParserConfigurationException, FactoryConfigurationError,
            SAXException, IOException {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

        factory.setNamespaceAware(false);
        factory.setIgnoringComments(true);
        factory.setIgnoringElementContentWhitespace(false);
        factory.setCoalescing(false);
        factory.setExpandEntityReferences(true);
        OutputStreamWriter errorWriter = new OutputStreamWriter(System.err);
        DocumentBuilder builder = factory.newDocumentBuilder();
        errorWriter.close();
        return builder.parse(is);
    }


    /**
     * 把XML转换成字符串输出
     * @param doc Document 要转换的XML文档
     * @return String
     */
    public static String docToXMLString(Document doc) {
        String strXML = null;
        try {
            StringWriter sw = new java.io.StringWriter(); //构造一个字符串输出流
            ((XmlDocument) doc).write(sw); //把XML写到输出流上
            strXML = sw.toString(); //转换成字符串
            sw.close(); //关闭字符流
        } catch (IOException ioe) {
            ioe.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return strXML;
    }


    /**
     * 把XML文档的某个节点,转换成字符串输出
     * @param dom Node
     * @return String
     */
    public static String transDOM2String(Node dom) {
        TransformerFactory tFactory = TransformerFactory.newInstance();
        StringWriter sw = new StringWriter();
        StreamResult sr = new StreamResult(sw);
        String strXML = null;
        try {
            DOMSource domSource = new DOMSource(dom);
            Transformer transformer = tFactory.newTransformer();
            transformer.setOutputProperty("encoding", "GB2312");
            transformer.transform(domSource, sr);
            strXML = sw.toString();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return strXML;
    }

}