Find and Replace Text by Regular Expressions in Word in Java applications

Spire.Doc for Java provides the ability to find the words that match a specific regular expression in a Word document. This article mainly introduce the feature of find and highlight/replace the text by regular expressions from the following two parts.

• Find and replace the text by regular expressions in Word document
• Find and highlight the text by regular expressions in Word document

Firstly, view the Sample document:

This demo shows how to use the document.replace() method offered by Spire.Doc to find all the text started with # and use Spire.Doc to replace them.

Java:

import com.spire.doc.*;
import java.util.regex.Pattern;

public class WordDemo {
    public static void main(String[] args) throws Exception {
        //Load the  sample document
        Document document = new Document();
        document.loadFromFile("Sample.docx");

        //Define a regular expression for the words that start with #.
        Pattern c = Pattern.compile ("^#(.*?)\\d$");
        //Use the new string “Spire.Doc” to replace all the searched texts.
        document.replace(c,"Spire.Doc");

        //Save the document to file
        document.saveToFile("Result.docx", FileFormat.Docx_2013);
    }
}

Output：

This demo shows how to use the document.findAllPattern() method to search all the contents within【】even they are from the different paragraphs. And then highlight all the searched contents.

import com.spire.doc.*;
import com.spire.doc.documents.TextSelection;
import com.spire.doc.fields.TextRange;

import java.awt.*;
import java.util.regex.Pattern;

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

        //Load the sample document
        Document document = new Document();
        document.loadFromFile("Sample.docx");

        Pattern c = Pattern.compile("【[\\s\\S]*】");
        //find all the contents within【】
        TextSelection[] textSelections = document.findAllPattern(c, true); 
       //Highlight the searched contents
        for (TextSelection selection : textSelections) {
            TextRange[] results = selection.getAsRange();
            for (TextRange result : results) {
                result.getCharacterFormat().setHighlightColor(Color.yellow);
            }
        }
        document.saveToFile("Result2.docx", FileFormat.Docx_2013);
    }
}