org.youi.framework.util.Dom4jUtils.java Source code

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Here is the source code for org.youi.framework.util.Dom4jUtils.java

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/*
 * YOUI
 * Copyright 2010 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.youi.framework.util;

import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

/**
 * @??
 * @  zhyi_12
 * @ 1.0.0
 * @ Jan 9, 2010
 */
public class Dom4jUtils {

    private final static Log log = LogFactory.getLog(Dom4jUtils.class);//

    /**
     * SAX ??xml
     * @param filePath xml
     * @return dom4jDocument
     */
    public static Document saxParse(String filePath) {
        Document doc = null;
        SAXReader saxReader = new SAXReader();
        try {
            doc = saxReader.read(filePath);
        } catch (DocumentException e) {
            log.error("SAXReader?xml?" + filePath + ":" + e.getMessage());
        }
        return doc;
    }

    public static Document saxParse(InputStream input) {
        Document doc = null;
        SAXReader saxReader = new SAXReader();
        try {
            doc = saxReader.read(input);
        } catch (DocumentException e) {
            log.error("SAXReader?xml:" + e.getMessage());
        }
        return doc;
    }

    /**
     * ?xml
     * @param filename
     * @param doc
     * @param encoding
     * @throws GenerateException
     */
    public static void writeFormatDocToFile(String filePath, Document doc, String encoding) {
        FileOutputStream os = null;
        try {
            os = new FileOutputStream(filePath);
        } catch (FileNotFoundException e) {
            throw new RuntimeException(e);
        }
        Dom4jUtils.formatXml(doc, os, encoding);
    }

    /**
     * ?xml?
     * @param doc
     * @param os
     * @param encoding
     */
    public static void formatXml(Document doc, OutputStream os, String encoding) {
        if (os == null)
            return;
        OutputFormat format = null;
        XMLWriter output = null;
        try {
            format = OutputFormat.createPrettyPrint();
            format.setEncoding(encoding);
            format.setOmitEncoding(false);
            output = new XMLWriter(new BufferedWriter(new OutputStreamWriter(os, "UTF-8")), format);
            output.write(doc);
        } catch (IOException e) {
            log.error("xmlIO:" + e.getMessage());
        } finally {
            try {
                output.close();
            } catch (IOException e) {
                log.info("" + e.getMessage());
            }
        }
    }

    /**
     * @param modelElement
     * @param attrName
     * @param attrValue
     */
    public static void addAttribute(Element modelElement, String attrName, String attrValue) {
        if (attrValue != null) {
            modelElement.addAttribute(attrName, attrValue);
        }
    }

    /**
     * @param xmlText
     * @return
     */
    public static Document parseText(String xmlText) {
        Document doc;
        try {
            doc = DocumentHelper.parseText(xmlText);
        } catch (DocumentException e) {
            doc = null;
            e.printStackTrace();
        }
        return doc;
    }
}