word下载

拼搏现实的明天。 2022-12-11 03:23 164阅读 0赞

在实际开发中,经常会遇到将数据库的数据写到word模板中再下载的需求,开贴记录一下.

首先准备一个带有占位符的word模板并放到resources目录中

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM5OTQwMjA1_size_16_color_FFFFFF_t_70][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM5OTQwMjA1_size_16_color_FFFFFF_t_70 1][]

然后开始编写下载的方法

@ApiOperation(value = "下载零星工程审批表", notes = "下载零星工程审批表", httpMethod = "POST")
        @RequestMapping(value = "/downloadSporadicProject/{passId}", produces= MediaType.APPLICATION_OCTET_STREAM_VALUE)
        public void downloadSporadicProject(@PathVariable("passId")String passId, HttpServletRequest request, HttpServletResponse response) {
            // 查询数据
            ManagementSporadicProject sporadicProject = managementSporadicProjectService.getById(passId);
            Map<String, String> docMap = new HashMap<>();
            docMap.put("projectName", sporadicProject.getProjectName());
            docMap.put("location", sporadicProject.getLocation());
            docMap.put("construction", sporadicProject.getConstruction());
            docMap.put("supervision", sporadicProject.getSupervision());
            docMap.put("basis", sporadicProject.getBasis());
            docMap.put("detail", sporadicProject.getDetail());
            docMap.put("invest", sporadicProject.getInvest());
            docMap.put("oftime", sporadicProject.getOftime());
            String inputUrl = "白鹤滩水电站零星工程申报（审批）表.docx";
            // 临时文件
            String outputUrl = "白鹤滩水电站零星工程申报（审批）表temp.doc";
            // 替换模板中的占位符并写入到临时文件
            Common.changWord(inputUrl, outputUrl, docMap);
            // 将临时文件以流的方法输出
            try {
                //获取资源文件
                FileInputStream fileInputStream = new FileInputStream(outputUrl);
                //设置响应类型
                response.setCharacterEncoding("UTF-8");
                String type = new MimetypesFileTypeMap().getContentType(inputUrl);
                response.setHeader("content-Type", type);
                if(Objects.equals(getBrowser(request), "FF")){//如果是火狐,解决火狐中文名乱码问题
                    response.setHeader("Content-Disposition",
                            "attachment;fileName=" +new String(inputUrl.getBytes("UTF-8"),"iso-8859-1"));
                }else{
                    response.setHeader("Content-Disposition",
                            "attachment;filename=" + URLEncoder.encode(inputUrl, "UTF-8"));
                }
    
                //获取资源文件输入流和httpServletResponse的输出流
                try (InputStream inputStream =fileInputStream; ServletOutputStream servletOutputStream = response.getOutputStream()) {
                    //把资源文件的二进制流数据copy到response的输出流中
                    IOUtils.copy(inputStream, servletOutputStream);
                    //清除flush所有的缓冲区中已设置的响应信息至客户端
                    response.flushBuffer();
                } catch (Exception e) {
                    //错误日志记录
                    log.error(e.getMessage());
                }
            } catch (Exception e) {
                //自定义业务异常
                throw new ProjectException("导出模板失败");
            } finally {
                // 删除临时文件
                File file = new File(outputUrl);
                file.delete();
            }
        }
    
    
        // 判断浏览器种类的方法
        private String getBrowser(HttpServletRequest request) {
            String UserAgent = request.getHeader("USER-AGENT").toLowerCase();
            if (UserAgent.contains("msie"))
                return "IE";
            if (UserAgent.contains("firefox"))
                return "FF";
            if (UserAgent.contains("safari"))
                return "SF";
            return null;
        }

common方法
    
    /**
         * 根据模板生成新word文档
         * 判断表格是需要替换还是需要插入，判断逻辑有$为替换，表格无$为插入
         * @param inputUrl 模板存放地址
         * @param outputUrl 新文档存放地址
         * @param textMap 需要替换的信息集合
         */
        public static boolean changWord(String inputUrl, String outputUrl,
                                        Map<String, String> textMap) {
            //模板转换默认成功
            boolean changeFlag = true;
            try {
                ClassPathResource resource = new ClassPathResource(inputUrl);
                InputStream inputStream = resource.getInputStream();
                //获取docx解析对象
                XWPFDocument document = new XWPFDocument(inputStream);
                //解析替换文本段落对象
                changeText(document, textMap);
                //生成新的word
                File file = new File(outputUrl);
                FileOutputStream outputStream = new FileOutputStream(file);
                document.write(outputStream );
                outputStream .close();
            } catch (IOException e) {
                e.printStackTrace();
                changeFlag = false;
            }
    
            return changeFlag;
        }
    
    /**
         * 替换段落文本
         * @param document docx解析对象
         * @param textMap 需要替换的信息集合
         */
        public static void changeText(XWPFDocument document, Map<String, String> textMap){
            //获取段落集合
            List<XWPFParagraph> paragraphs = document.getParagraphs();
            for (XWPFParagraph paragraph : paragraphs) {
                //判断此段落时候需要进行替换
                String text = paragraph.getText();
                if(checkText(text)){
                    List<XWPFRun> runs = paragraph.getRuns();
                    for (XWPFRun run : runs) {
                        //替换模板原来位置
                        String textValue = changeValue(run.toString(), textMap);
                        run.setText(textValue,0);
                    }
                }
            }
        }
    
    /**
         * 匹配传入信息集合与模板
         * @param value 模板需要替换的区域
         * @param textMap 传入信息集合
         * @return 模板需要替换区域信息集合对应值
         */
        public static String changeValue(String value, Map<String, String> textMap){
            Set<Map.Entry<String, String>> textSets = textMap.entrySet();
            for (Map.Entry<String, String> textSet : textSets) {
                //匹配模板与替换值 格式${key}
                String key = "${"+textSet.getKey()+"}";
                if(value.contains(key)){
                    value = value.replace(key, textSet.getValue());//仅替换参数
                }
            }
            //模板未匹配到区域替换为空
            if(checkText(value)){
                value = "";
            }
            return value;
        }

前端

<!DOCTYPE html>
    <html xmlns:th="http://www.thymeleaf.org">
    <head>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <meta http-equiv="X-UA-Compatible" content="ie=edge">
      <title>Document</title>
      <script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js"></script>
    </head>
     
    <body>
    <input type="button" onclick="down()" value="点击">
    </body>
    <script type="text/javascript">
      function down(){
        // var url = window.encodeURI(this.axios.defaults.baseURL + '/ev/CommodityMaster/downloadTemp?fileName=D1120物资总清单导入模板.xlsx&token=' + localStorage.getItem("set_token"))
        // window.location.href = url
        // window.open("http://localhost:10000/download", '_blank')
        window.location.href = 'http://ip:30020/workflows/managementsporadicproject/download/2020092519170120bd63a2e25c49cb96a38dd1f123a623'
      }
    </script>

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