依赖:

<dependency>
<groupId>com.documents4j</groupId>
<artifactId>documents4j-local</artifactId>
<version>1.0.3</version>
</dependency>
<dependency>
<groupId>com.documents4j</groupId>
<artifactId>documents4j-transformer-msoffice-word</artifactId>
<version>1.0.3</version>
</dependency>

代码:

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import com.documents4j.api.DocumentType;
import com.documents4j.api.IConverter;
import com.documents4j.job.LocalConverter;

public class Document4jApp {

public static void main(String[] args) {

File inputWord = new File("C:/Users/avijit.shaw/Desktop/testing/docx/Account Opening Prototype Details.docx");
File outputFile = new File("Test_out.pdf");
try {
InputStream docxInputStream = new FileInputStream(inputWord);
OutputStream outputStream = new FileOutputStream(outputFile);
IConverter converter = LocalConverter.builder().build();
converter.convert(docxInputStream).as(DocumentType.DOCX).to(outputStream).as(DocumentType.PDF).execute();
outputStream.close();
System.out.println("success");
} catch (Exception e) {
e.printStackTrace();
}
}

参考地址:https://stackoverflow.com/a/59624576