Java XML Document from File getDocumentFromFile(File file)

Description

get Document From File

License

Apache License

Declaration

public static Document getDocumentFromFile(File file) throws Exception 

Method Source Code

//package com.java2s;
/*//  w  ww  . j  a  v a2s  . c  om
 * File: DataUtils.java
 * 
 * Copyright 2009 Muradora
 * 
 * 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.
 */

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;

public class Main {
    public static Document getDocumentFromFile(File file) throws Exception {
        byte[] document = loadFile(file);
        DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
        documentBuilderFactory.setNamespaceAware(true);
        DocumentBuilder docBuilder = documentBuilderFactory.newDocumentBuilder();

        Document doc = docBuilder.parse(new ByteArrayInputStream(document));

        return doc;
    }

    public static byte[] loadFile(String filename) throws Exception {
        File file = new File(filename.trim());
        return loadFile(file);
    }

    public static byte[] loadFile(File file) throws Exception {
        if (!file.exists() || !file.canRead()) {
            String message = "Cannot read file: " + file.getCanonicalPath();
            System.err.println(message);
            throw new Exception(message);
        }

        FileInputStream fis = new FileInputStream(file);
        ByteArrayOutputStream data = new ByteArrayOutputStream();
        int len = 0;
        byte[] buf = new byte[1024];
        while ((len = fis.read(buf)) >= 0) {
            data.write(buf, 0, len);
        }

        return data.toByteArray();
    }
}

Related

1. getDocumentFromFile(String absolutePath)
2. getXML(File file)
3. getXML(File xmlFile)
4. getXmlDocument(File file)