Java - Replace Text and Images in PowerPoint

Creating a PowerPoint document from scratch is time-consuming, which is why there are so many pre-designed PowerPoint templates out there on the internet. In this article, I am going to show you how to replace text and images inside a PowerPoint template by using Free Spire.Presentation for Java.

Creating a template

First of all, prepare your template as follows. Make sure the text and the image are not placed within a table cell. Otherwise, the code example below won’t work. I’ll introduce how we can replace text and images within a table in my later article. 

Installing Spire.Presentation.jar

If you create a Maven project, you can easily import the jar in your application using the following configurations. For non-Maven projects, download the jar file from this link and add it as a dependency in your application.

<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>e-iceblue</name>
        <url>http://repo.e-iceblue.com/nexus/content/groups/public/</url>
    </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId> e-iceblue </groupId>
        <artifactId>spire.presentation.free</artifactId>
        <version>2.6.1</version>
    </dependency>
</dependencies>

Using the code

import com.spire.presentation.*;

import com.spire.presentation.drawing.IImageData;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Map;

public class ReplaceTextAndImage {
    public static void main(String[] args) throws Exception {

        //Create a Presentation object
        Presentation presentation = new Presentation();

        //Load the template file
        presentation.loadFromFile("C:\\Users\\Administrator\\Desktop\\sample.pptx");

        //Get the first slide
        ISlide slide= presentation.getSlides().get(0);

        //Create a Map object
        Map<String, String> map = new HashMap<String, String>();

        //Add 5 pairs of keys and values to the map
        map.put("#name","Arthur Godzik");
        map.put("#age","28");
        map.put("#tel","863-8789");
        map.put("#email","arthur1995@gmail.com");
        map.put("#add","12, Sunrise Blvd, Beverly Hills, CA, US");

        //Replace text in the slide
        replaceText(slide,map);

        //Get the image path
        String picPath = "C:\\Users\\Administrator\\Desktop\\avatar.jpg";

        //Replace image in the slide
        replaceImage(slide, picPath);

        //Save to another file
        presentation.saveToFile("ReplaceTextAndImage.pptx", FileFormat.PPTX_2013);
    }

    public static void replaceText(ISlide slide, Map<String, String> map) {

        //Loop through the shapes in a certain slide
        for (Object shape : slide.getShapes()
        ) {

            //Detect if the shape is an IAutoShape
            if (shape instanceof IAutoShape) {

                //Loop through the paragraphs in the shape
                for (Object paragraph : ((IAutoShape) shape).getTextFrame().getParagraphs()
                ) {
                    ParagraphEx paragraphEx = (ParagraphEx) paragraph;
                    for (String key : map.keySet()
                    ) {
                        if (paragraphEx.getText().contains(key)) {

                            //Replace text in the paragraph
                            paragraphEx.setText(paragraphEx.getText().replace(key, map.get(key)));
                        }
                    }
                }
            }
        }
    }

    public static void replaceImage(ISlide slide, String picPath) throws Exception{

        //Load am image from URL
        BufferedImage bufferedImage = ImageIO.read(new FileInputStream(picPath));
        IImageData image = slide.getPresentation().getImages().append(bufferedImage);

        //Get shape collection of a slide
        ShapeCollection shapes = slide.getShapes();

        //Loop through shapes
        for (int i = 0; i < shapes.getCount(); i++) {

            //Detect if a shape is an instance of SlidePicture
            if (shapes.get(i) instanceof SlidePicture) {

                //Re-set the new image as the picture fill of the shape
                ((SlidePicture) shapes.get(i)).getPictureFill().getPicture().setEmbedImage(image);
            }
        }
    }
}

Output