word、excel文件转PDF（documents4j方式，简单）

1 documents4j方式

引入pom

<dependency>
            <groupId>com.documents4j</groupId>
            <artifactId>documents4j-local</artifactId>
            <version>1.1.12</version>
        </dependency>
        <dependency>
            <groupId>com.documents4j</groupId>
            <artifactId>documents4j-transformer-msoffice-word</artifactId>
            <version>1.1.12</version>
        </dependency>

#excel转pdf需要的jar
<dependency>
            <groupId>com.documents4j</groupId>
            <artifactId>documents4j-transformer-msoffice-excel</artifactId>
            <version>1.1.12</version>
        </dependency>

2 代码实现(word，excel转pdf代码)

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

public static void main(String[] args) {
        File inputWord = new File("E:\\111\\123.docx");
        File outputFile = new File("E:\\111\\123.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();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

/**
     * documents4j方式excel转pdf
     * @param file 源文件
     * @return 返回转成功的文件
     */
    public static File wordToPDFByDocuments4j(File file) {
        File outputFile = new File(String.format("%s%s%s%s", file.getParentFile(),  File.separator, System.currentTimeMillis(), ".pdf"));
        try  {
            InputStream docxInputStream = new FileInputStream(file);
            OutputStream outputStream = new FileOutputStream(outputFile);
            IConverter converter = LocalConverter.builder().build();
            converter.convert(docxInputStream).as(DocumentType.XLSX).to(outputStream).as(DocumentType.PDF).execute();
            outputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return outputFile;
    }

2 poi方式