<!--aspose預(yù)覽office文件-->
        <dependency>
            <groupId>com.aspose</groupId>
            <artifactId>aspose-slides</artifactId>
            <version>19.3</version>
        </dependency>
        <dependency>
            <groupId>com.aspose</groupId>
            <artifactId>aspose-cells</artifactId>
            <version>8.5.2</version>
        </dependency>
        <dependency>
            <groupId>com.aspose</groupId>
            <artifactId>aspose-words</artifactId>
            <version>15.8.0</version>
        </dependency>
        <!--end-->

mvn install:install-file -Dfile=D:\jar\aspose-words-15.8.0.jar -DgroupId=com.aspose -DartifactId=aspose-words -Dversion=15.8.0 -Dpackaging=jar
 
 
mvn install:install-file -Dfile=D:\jar\aspose-cells-8.5.2.jar -DgroupId=com.aspose -DartifactId=aspose-cells -Dversion=8.5.2 -Dpackaging=jar
 
 
mvn install:install-file -Dfile=D:\jar\aspose.slides-19.3.jar -DgroupId=com.aspose -DartifactId=aspose-slides -Dversion=19.3 -Dpackaging=jar

@Controller
public class FileController {
 
    @Autowired
    private FileToPdfComUtils fileToPdfComUtils;
 
    /**
     * index頁(yè)面
     * @return
     */
    @GetMapping("/index")
    public String index(){
        return "index";
    }
 
    /**
     * 文件預(yù)覽
     * @param filePath
     * @param request
     * @param response
     * @throws IOException
     */
    @GetMapping("/showFile")
    @ResponseBody
    public void showFile(String filePath, HttpServletRequest request, HttpServletResponse response) throws IOException {
        //源文件路徑
        String sourcePath = filePath;
        //pdf文件路徑
        String pdfPath = null;
        //獲取文件后綴判斷是否轉(zhuǎn)換pdf
        int index = filePath.lastIndexOf(".");
        String fileType = filePath.substring(index + 1);
        String toPdfSuffix = "doc,docx,xls,xlsx,ppt,pptx";
        try {
            if(toPdfSuffix.indexOf(fileType) >= 0){
                pdfPath = sourcePath.substring(0, index) + ".pdf";
                //源文件轉(zhuǎn)換pdf
                fileToPdfComUtils.officeToPdf(sourcePath, pdfPath);
                File pdfFile = new File(pdfPath);
                InputStream is = new FileInputStream(pdfFile);
                showPdf(is, pdfPath, request, response);
            } else {
                //不用轉(zhuǎn)換，直接預(yù)覽
                File pdfFile = new File(filePath);
                InputStream is = new FileInputStream(pdfFile);
                showPdf(is,filePath, request, response);
            }
        }catch (Exception e){
            e.printStackTrace();
        } finally {
            //最后刪除生成的pdf文件
            FileUtils.deleteFile(pdfPath);
        }
 
    }
 
    /**
     * 文件預(yù)覽
     * @param is
     * @param fileKey
     * @param request
     * @param response
     * @throws IOException
     */
    public void showPdf(InputStream is,  String fileKey, HttpServletRequest request, HttpServletResponse response) throws IOException {
        //根據(jù)文件名獲取 MIME 類型
        int idx = fileKey.lastIndexOf(".");
        String suffix = fileKey.substring(idx);
        String[] fileKeys = fileKey.split("/");
        String fileName = fileKeys[fileKeys.length - 1];
        String contentType = FileContentType.SUFFIX_TYPE.get(suffix);
        //inline表示直接預(yù)覽
        String userAgent = request.getHeader("USER-AGENT");
        String contentDisposition = "";
        if(StringUtils.contains(userAgent, "MSIE")||StringUtils.contains(userAgent, "Trident") || StringUtils.contains(userAgent,"Edge")){
            //IE 瀏覽器
            contentDisposition = "inline;filename=" + URLEncoder.encode(fileName,"UTF8");
        }else {
            //其他瀏覽器
            contentDisposition = "inline;filename=" + new String(fileName.getBytes("UTF-8"),"ISO8859-1");
        }
        // 設(shè)置頭
        response.setHeader("Content-Disposition",contentDisposition);
        response.setContentType(contentType);
        // 獲取綁定了客戶端的流
        ServletOutputStream output = response.getOutputStream();
        // 把輸入流中的數(shù)據(jù)寫入到輸出流中
        IOUtils.copy(is,output);
        is.close();
    }
}

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>預(yù)覽文件</title>
</head>
<body>
<button target="_blank" type="button"
        onclick="showFile('d:/file/測(cè)試.doc')">預(yù)覽doc </button>
<button  target="_blank" type="button"
        onclick="showFile('d:/file/測(cè)試.docx')">預(yù)覽docx </button>
<button  target="_blank" type="button"
        onclick="showFile('d:/file/測(cè)試.xls')">預(yù)覽xls </button>
<button target="_blank" type="button"
        onclick="showFile('d:/file/測(cè)試.xlsx')">預(yù)覽xlsx </button>
<button  target="_blank" type="button"
        onclick="showFile('d:/file/測(cè)試.pptx')">預(yù)覽pptx </button>
<button  target="_blank" type="button"
        onclick="showFile('d:/file/數(shù)據(jù)庫(kù)原理（第5版）（樣章）.pdf')">預(yù)覽pdf </button>
<script>
    //預(yù)覽
    function showFile (filePath){
        var url = "/showFile" + "?filePath=" + filePath;
        window.open(url);
    };
 
</script>
</body>
</html>