demo.poi.image.SimpleImages.java Source code

Introduction

Here is the source code for demo.poi.image.SimpleImages.java

Source

/*
 *  ====================================================================
 *    Licensed to the Apache Software Foundation (ASF) under one or more
 *    contributor license agreements.  See the NOTICE file distributed with
 *    this work for additional information regarding copyright ownership.
 *    The ASF licenses this file 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.
 * ====================================================================
 */
package demo.poi.image;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.util.Units;
import org.apache.poi.xwpf.usermodel.BreakType;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFPictureData;
import org.apache.poi.xwpf.usermodel.XWPFRun;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Demonstrates how to add pictures in a .docx document
 */
public class SimpleImages {

    private static final Logger log = LoggerFactory.getLogger(SimpleImages.class);

    public static void main(String[] args) throws IOException, InvalidFormatException {
        // writeImageToDoc(args);
        InputStream file = SimpleImages.class.getClassLoader().getResourceAsStream("images.docx");
        extractImagesFromWord(file);
    }

    static void writeImageToDoc(String[] args) throws InvalidFormatException, IOException, FileNotFoundException {
        XWPFDocument doc = new XWPFDocument();
        XWPFParagraph p = doc.createParagraph();

        XWPFRun r = p.createRun();

        for (String imgFile : args) {
            int format;

            if (imgFile.endsWith(".emf"))
                format = XWPFDocument.PICTURE_TYPE_EMF;
            else if (imgFile.endsWith(".wmf"))
                format = XWPFDocument.PICTURE_TYPE_WMF;
            else if (imgFile.endsWith(".pict"))
                format = XWPFDocument.PICTURE_TYPE_PICT;
            else if (imgFile.endsWith(".jpeg") || imgFile.endsWith(".jpg"))
                format = XWPFDocument.PICTURE_TYPE_JPEG;
            else if (imgFile.endsWith(".png"))
                format = XWPFDocument.PICTURE_TYPE_PNG;
            else if (imgFile.endsWith(".dib"))
                format = XWPFDocument.PICTURE_TYPE_DIB;
            else if (imgFile.endsWith(".gif"))
                format = XWPFDocument.PICTURE_TYPE_GIF;
            else if (imgFile.endsWith(".tiff"))
                format = XWPFDocument.PICTURE_TYPE_TIFF;
            else if (imgFile.endsWith(".eps"))
                format = XWPFDocument.PICTURE_TYPE_EPS;
            else if (imgFile.endsWith(".bmp"))
                format = XWPFDocument.PICTURE_TYPE_BMP;
            else if (imgFile.endsWith(".wpg"))
                format = XWPFDocument.PICTURE_TYPE_WPG;
            else {
                System.err.println("Unsupported picture: " + imgFile
                        + ". Expected emf|wmf|pict|jpeg|png|dib|gif|tiff|eps|bmp|wpg");
                continue;
            }

            r.setText(imgFile);
            r.addBreak();
            r.addPicture(new FileInputStream(imgFile), format, imgFile, Units.toEMU(200), Units.toEMU(200)); // 200x200
            // pixels
            r.addBreak(BreakType.PAGE);
        }

        FileOutputStream out = new FileOutputStream("images.docx");
        doc.write(out);
        out.close();
        // doc.close();
    }

    public static List<byte[]> extractImagesFromWord(InputStream file) {
        try {
            List<byte[]> result = new ArrayList<byte[]>();
            XWPFDocument doc = new XWPFDocument(file);
            log.debug("{}", doc);

            for (XWPFPictureData picture : doc.getAllPictures()) {
                result.add(picture.getData());
                log.debug("{}", picture.getFileName());
            }

            return result;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

}