springboot word aspose 转换PDF 在线预览

文章目录

• ​​1. 依赖​​
• ​​2. 工具类​​
• ​​3. 实现类​​
• ​​4. controller​​
• ​​5. application.yml​​
• ​​6. license.xml​​
• ​​7. 目录结构​​
• ​​8. 测试验证​​

1. 依赖

<dependencies>
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>1.18.22</version>
    </dependency>

    <dependency>
      <groupId>com.aspose.cells</groupId>
      <artifactId>aspose-cells</artifactId>
      <version>20.4 - c</version>
      <scope>system</scope>
      <systemPath>${project.basedir}/src/main/resources/lib/aspose-cells-20.4 - c.jar</systemPath>
    </dependency>

    <dependency>
      <groupId>com.aspose.words</groupId>
      <artifactId>aspose-words</artifactId>
      <version>words-18.10-jdk16</version>
      <scope>system</scope>
      <systemPath>${project.basedir}/src/main/resources/lib/aspose-words-18.10-jdk16.jar</systemPath>
    </dependency>

     <!-- web支持 -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

  </dependencies>

2. 工具类

package com.gblfy.word.utils;

import com.aspose.words.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.core.io.ClassPathResource;
import org.springframework.stereotype.Component;

import java.io.FileOutputStream;
import java.io.InputStream;

/**
 * 使用Aspose将word转成pdf
 *
 * @author gblfy
 * @date 2022-11-05
 */
@Slf4j
@Component
public class Word2PdfUtil {
    /**
     * 破解方法
     * 需要jar包: aspose-words-15.12.0-jdk16.jar
     * 同时配置 license.xml
     *
     * @return
     */
    private static boolean getLicense() {
        boolean result = false;
        try {
            InputStream is = new ClassPathResource("/license.xml").getInputStream();
            License aposeLic = new License();
            aposeLic.setLicense(is);
            result = true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    /**
     * word 转 pdf
     *
     * @param inputPath word文件path(全路径)
     * @param outPath   pdf文件path(全路径)
     * @return
     */
    public Boolean word2pdf(String inputPath, String outPath) {
        try (FileOutputStream os = new FileOutputStream(outPath)) {
            if (getLicense()) {
                Document doc = new Document(inputPath);
                doc.save(os, SaveFormat.PDF);
                return true;
            }
            log.error("转换失败!", "破解失败");
            return false;
        } catch (Exception e) {
            log.error("转换失败!", e);
            return false;
        }
    }
}

3. 实现类

package com.gblfy.word.impl;

import com.gblfy.word.utils.Word2PdfUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * word to pdf 预览
 *
 * @author gblfy
 * @date 2022-11-05
 */
@Slf4j
@Component
public class PdfServiceImpl {
    @Autowired
    private Word2PdfUtil word2PdfUtil;

    @Value("${word2pdf.wordDir}")
    private String wordDir;

    public void word2pdf(String fileName, HttpServletResponse response) {
        long start = System.currentTimeMillis();
        try {
            String wordFileName = wordDir + File.separator + fileName;
            String pdfFileName = fileNameHandle(wordFileName);
            
            log.info("wordFileName-》{}:" + wordFileName);
            log.info("pdfFileName -》{}:" + pdfFileName);

            File file = new File(wordFileName);
            if (!file.exists()) {
                log.error("在" + wordFileName + "目录下不存在指定文件");
            }

            // 生成pdf
            Boolean flag = word2PdfUtil.word2pdf(wordFileName, pdfFileName);

            if (flag) {
                byte[] buf = new byte[8 * 1024];
                int len = 0;
                try (InputStream is = new FileInputStream(pdfFileName); OutputStream os = response.getOutputStream();) {
                    while ((len = is.read(buf, 0, buf.length)) != -1) {
                        os.write(buf, 0, len);
                    }
                    os.flush();
                } finally {
                    try {
                        // 清除文件
                        // deleteFile(wordFileName);
                        // deleteFile(pdfFileName);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }
        } catch (Exception e1) {
            e1.printStackTrace();
        }
        long end = System.currentTimeMillis();
        double castTime = (end - start) / 1000.0;
        log.info("pdf转换成功，共耗时：->{}:" + castTime);
    }

    public String fileNameHandle(String wordFileName) {
        if (wordFileName.contains("docx")) {
            return wordFileName.replace(".docx", "pdf");
        }
        if (wordFileName.contains("doc")) {
            return wordFileName.replace("doc", "pdf");
        }

        return "非word格式文件，请核实！";
    }

    /**
     * 删除文件
     *
     * @param filePath 文件
     * @return
     */
    public static boolean deleteFile(String filePath) {
        boolean flag = false;
        File file = new File(filePath);
        // 路径为文件且不为空则进行删除
        if (file.isFile() && file.exists()) {
            file.delete();
            flag = true;
        }
        return flag;
    }
}

4. controller

package com.gblfy.word.controller;

import com.gblfy.word.impl.PdfServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletResponse;

/**
 * word to pdf 预览
 *
 * @author gblfy
 * @date 2022-11-05
 */
@RestController
public class PdfController {
    @Autowired
    private PdfServiceImpl pdfService;

    @GetMapping("/wordtopdf/{fileName}")
    public void wordtopdf(@PathVariable String fileName, HttpServletResponse response) {
        pdfService.word2pdf(fileName, response);
    }
}

5. application.yml

server:
  port:  80
word2pdf:
  wordDir: D:/ht/outfile
  pdfDir: D:/ht/outfile

6. license.xml

<License>
     <Data>
         <Products>
             <Product>Aspose.Total for Java</Product>
             <Product>Aspose.Words for Java</Product>
         </Products>
         <EditionType>Enterprise</EditionType>
         <SubscriptionExpiry>20991231</SubscriptionExpiry>
         <LicenseExpiry>20991231</LicenseExpiry>
         <SerialNumber>8bfe198c-7f0c-4ef8-8ff0-acc3237bf0d7</SerialNumber>
     </Data>
     <Signature>sNLLKGMUdF0r8O1kKilWAGdgfs2BvJb/2Xp8p5iuDVfZXmhppo+d0Ran1P9TKdjV4ABwAgKXxJ3jcQTqE/2IRfqwnPf8itN8aFZlV3TJPYeD3yWE7IT55Gz6EijUpC7aKeoohTb4w2fpox58wWoF3SNp6sK6jDfiAUGEHYJ9pjU=</Signature>
 </License>

7. 目录结构

8. 测试验证

在application.yml中配置文件存在的目录

http://localhost/wordtopdf/文件名称.docx