Create SmartArt graphics in PowerPoint and extract text from them in Java

SmartArt is a useful tool in PowerPoint which allows converting textual data into predefined graphics. In this article, I’ll show you how to create SmartArt graphics in PowerPoint and extract text from them in Java programmatically.

The Java API I used in this tutorial is FreeSpire.Presentation for Java. It is a professional API that enables developers to create, read, convert and print PowerPoint documents in Java Applications. Meanwhile, as an independent Java library, it doesn't need Microsoft PowerPoint to be installed on system.

BEFORE CODING

Before coding, please import Spire.Presentation.jar as reference in your project. If you are creating a Maven project, you can easily add the jar dependency by adding the following configurations to the pom.xml.

<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>3.9.0</version>

    </dependency>

</dependencies>

The screenshot below is showed what it finally looks like:

USING THE CODE
Create SmartArt graphics
In the following code snippets, I create two SmartArt graphics: one is a default SmartArt, and the other 
is a customized SmartArt. In the process of creating a SmartArt, we can set its location, color type, style 
type and insert text in it.
import com.spire.presentation.*;
import com.spire.presentation.diagrams.*;
public class AddSmartArt {

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

        //Create a PowerPoint file, and get the first slide

        Presentation ppt = new Presentation();

        ISlide slide =ppt.getSlides().get(0);


        //Insert the first default SmartArt

        ISmartArt smartArt1 = slide.getShapes().appendSmartArt(50,50,350,350,
               SmartArtLayoutType.BASIC_CYCLE);//Insert the SmartArt into the specific location

        smartArt1.setColorStyle(SmartArtColorType.COLORFUL_ACCENT_COLORS_4_TO_5);//Set the SmartArt color type

        smartArt1.setStyle(SmartArtStyleType.INTENCE_EFFECT);//Set the SmartArt style type

        ISmartArtNode smartArtNode1 = smartArt1.getNodes().get(0);
       
               smartArtNode1.getTextFrame().setText("Information");//Gain the default nodes, and add relevant contents

        smartArt1.getNodes().get(1).getTextFrame().setText("Communication");

        smartArt1.getNodes().get(2).getTextFrame().setText("Analysis");

        smartArt1.getNodes().get(3).getTextFrame().setText("Optimization");

        smartArt1.getNodes().get(4).getTextFrame().setText("Execution");


        //Insert the second SmartArt, and customize the node contents

        ISmartArt smartArt2 = slide.getShapes().appendSmartArt(400,200,200,200,SmartArtLayoutType.BASIC_RADIAL);

        smartArt2.setColorStyle(SmartArtColorType.DARK_2_OUTLINE);//set the style of the SmartArt

        smartArt2.setStyle(SmartArtStyleType.MODERATE_EFFECT);//set the color of the SmartArt


        //Remove all default nodes

        for (Object a : smartArt2.getNodes()) {

           smartArt2.getNodes().removeNode((ISmartArtNode) a);

        }

        //Add a parent node

        ISmartArtNode node2 = smartArt2.getNodes().addNode();

        //Add three child nodes

        ISmartArtNode node2_1 = node2.getChildNodes().addNode();

        ISmartArtNode node2_2 =node2.getChildNodes().addNode();

        ISmartArtNode node2_3 =node2.getChildNodes().addNode();

        //add text to each node and set the font size

        node2.getTextFrame().setText("Living Creature");

        node2.getTextFrame().getTextRange().setFontHeight(16f);

        node2_1.getTextFrame().setText("Animal");

        node2_1.getTextFrame().getTextRange().setFontHeight(14f);

        node2_2.getTextFrame().setText("Plant");

        node2_2.getTextFrame().getTextRange().setFontHeight(14f);

        node2_3.getTextFrame().setText("Microbe");

        node2_3.getTextFrame().getTextRange().setFontHeight(14f);

        //Save the file

        ppt.saveToFile("output/AddSmartArt.pptx",FileFormat.PPTX_2013);

        ppt.dispose();

    }

}
Output

Extract text from SmartArt graphics
Here are some steps to extract text from SmartArt graphics.
Step 1: Load the PowerPoint document which needs to be extracted text
Step 2: Traverse through all the slides of the PPT file and find the SmartArt shapes.
Step 3: Create a new .txt file and insert the extracted text from SmartArt into it.
import com.spire.presentation.*;
import com.spire.presentation.diagrams.ISmartArt;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
public class ExtractTextFromSmartArt {

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

        //Create a Presentation instance, and load a sample

        Presentation presentation = new Presentation();

        presentation.loadFromFile("C:\\Users\\Test1\\Desktop\\AddSmartArt.pptx");

        //Create a new .txt file to store the extracted text

        String result = "output/extractTextOfSmartArt.txt";

        File file=new File(result);

        if(file.exists()){

            file.delete();

        }

        file.createNewFile();

        FileWriter fw =new FileWriter(file,true);

        BufferedWriter bw =new BufferedWriter(fw);

        bw.write("Below is extracted text from SmartArt:" + "\r\n");

        //Traverse through all the slides of the PPT file and find the SmartArt shapes.

        for (int i = 0; i < presentation.getSlides().getCount(); i++)

        {

            for (int j = 0; j < presentation.getSlides().get(i).getShapes().getCount(); j++)

            {

                if (presentation.getSlides().get(i).getShapes().get(j) instanceof ISmartArt)

                { ISmartArt smartArt = (ISmartArt)presentation.getSlides().get(i).getShapes().get(j);



                    //Extract text from SmartArt and append to the StringBuilder object

                    for (int k = 0; k < smartArt.getNodes().getCount(); k++)

                    {

                        bw.write(smartArt.getNodes().get(k).getTextFrame().getText() + "\r\n");

                    }

                }

            }

        }

        bw.flush();

        bw.close();

        fw.close();

    }

}
Output