Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/* ************************************************************************** *
 * See the NOTICE file distributed with this work for additional information
 * regarding copyright ownership.
 *
 * This file is licensed to you 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.
 * ************************************************************************** */

import java.io.InputStream;
import java.io.InputStreamReader;

import java.io.Reader;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;

import org.xml.sax.InputSource;

public class Main {
    /**
     * Parses the given input stream and returns the corresponding desirialized
     * XML document.
     * 
     * @param input the input stream containing the serialized XML document
     * @return the deserialized DOM document
     * @throws Exception
     */
    public static Document readXML(InputStream input) throws Exception {
        return readXML(new InputStreamReader(input, "UTF-8"), true);
    }

    /**
     * Parses the given input stream and returns the corresponding desirialized
     * XML document.
     * 
     * @param input the input stream containing the serialized XML document
     * @return the deserialized DOM document
     * @throws Exception
     */
    public static Document readXML(InputStream input, boolean isNamespaceAware) throws Exception {
        return readXML(new InputStreamReader(input, "UTF-8"), isNamespaceAware);
    }

    public static Document readXML(Reader reader) throws Exception {
        return readXML(reader, true);
    }

    /**
     * Parses the given input stream and returns the corresponding desirialized
     * XML document.
     * 
     * @param reader the reader containing the serialized XML document
     * @param isNamespaceAware
     * @return the deserialized DOM document
     * @throws Exception
     */
    public static Document readXML(Reader reader, boolean isNamespaceAware) throws Exception {
        try {
            DocumentBuilder builder = getDocumentBuilder(isNamespaceAware);
            InputSource source = new InputSource(reader);
            Document doc = builder.parse(source);
            return doc;
        } finally {
            reader.close();
        }
    }

    /**
     * Creates and returns an new document builder factory. This method tries to
     * configure the namespace support for the builder. If the underlying parser
     * does not support namespaces then this method returns a simple
     * DocumentBuilder object.
     * 
     * @return a new document builder
     * @throws ParserConfigurationException
     */
    private static DocumentBuilder getDocumentBuilder(boolean isNamespaceAware)
            throws ParserConfigurationException {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setNamespaceAware(isNamespaceAware); // never forget this!
        try {
            factory.setFeature("http://xml.org/sax/features/namespaces", isNamespaceAware);
        } catch (Throwable t) {
            // Just skip it...
        }
        DocumentBuilder builder = factory.newDocumentBuilder();
        return builder;
    }
}