Java将RTF文档转换为Word/PDF/HTML/图片

<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>e-iceblue</name>
        <url>https://repo.e-iceblue.com/nexus/content/groups/public/</url>
    </repository>
</repositories>
<dependency>
    <groupId>e-iceblue</groupId>
    <artifactId>spire.doc.free</artifactId>
    <version>5.3.2</version>
</dependency>

import com.spire.doc.Document;
import com.spire.doc.FileFormat;
 
public class RtfToWord {
    public static void main(String[] args){
        // 加载RTF文档
        Document document = new Document();
        document.loadFromFile("测试.rtf", FileFormat.Rtf);
 
        // 将RTF保存为Doc格式
        document.saveToFile("RTF转Doc.doc", FileFormat.Doc);
 
        // 将RTF保存为Docx格式
        document.saveToFile("RTF转Docx.docx", FileFormat.Docx_2013);
    }
}

import com.spire.doc.*;
 
public class RTFToPDF {
    public static void main(String[] args) {
        // 加载RTF文档
        Document document = new Document();
        document.loadFromFile("测试.rtf", FileFormat.Rtf);
 
        // 将RTF保存为PDF文档
        document.saveToFile("RTF转PDF.pdf", FileFormat.PDF);
    }
}

import com.spire.doc.*;
 
public class RTFToHTML {
    public static void main(String[] args) {
        // 加载RTF文档
        Document document = new Document();
        document.loadFromFile("测试.rtf", FileFormat.Rtf);
 
        // 将RTF保存为HTML格式
        document.saveToFile("Rtf转Html.html", FileFormat.Html);
        document.dispose();
    }
}

import com.spire.doc.*;
import com.spire.doc.documents.*;
 
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
 
public class RTFtoImage {
    public static void main(String[] args) throws Exception{
        // 加载RTF文档
        Document document = new Document();
        document.loadFromFile("测试.rtf", FileFormat.Rtf);
 
        // 将RTF保存为图片
        BufferedImage[] images = document.saveToImages(ImageType.Bitmap);
 
        // 遍历图片
        for (int i = 0; i < images.length; i++) {
 
            // 将每张图片保存为PNG(或JPG)格式
            BufferedImage image = images[i];
            File file = new File(String.format(("RTF转图-%d.png"), i));
            ImageIO.write(image, "PNG", file);
        }
    }
}