【Java用法】使用Java导出word文档的解决方案（适用于从服务器上下载到本地电脑）

爱被打了一巴掌 2022-12-23 09:45 401阅读 0赞

**本文目录**

一、Controller

二、Service 接口类

三、ServiceImpl 实现类

四、Content-Type 类型与MIME Type类型对照表

--------------------

最近在做一个word导出功能，需求非常简单，只需要将内容导出到word文件里即可，对于word的格式并没有要求。功能不复杂，想快速实现这个功能，但是使用POI的话，比较麻烦。本文记录一下通过一个工具类即可实现简单的word导出的功能，上一篇文章讲的是通过这个工具类实现服用在本地，word文档下载到本地的功能。本文将会实现项目部署到服务器上，然后通过导出或者下载功能保存到本地电脑。

> **项目架构：Springboot + mybatis-plus + MySQL + Maven**

添加依赖，同上一篇文章：[【Java用法】使用Java导出word文档的解决方案（适用于Windows电脑）][Java_Java_word_Windows]

直接上代码喽：

# 一、Controller #

@ApiOperation(value = "根据examId导出word文档")
        @RequestMapping(value = "/word", method = RequestMethod.POST)
        public void word(@RequestBody ExamExportDTO examExportDTO, HttpServletResponse response) {
    
            // 写出到客户端下载（即写出到Servlet）
            Word07Writer word07Writer = examService.word(examExportDTO);
    
            // response是HttpServletResponse对象
            response.setContentType("application/vnd.openxmlformats-officedocument.wordprocessingml.document;charset=utf-8");
            // test.docx是弹出下载对话框的文件名，不能为中文，中文请自行编码
            response.setHeader("Content-Disposition", "attachment;filename=test.docx");
    
            ServletOutputStream out = null;
            try {
                out = response.getOutputStream();
            } catch (IOException e) {
                log.error("根据examId导出word文档失败！", e);
            }
    
            // 写出到目标流
            word07Writer.flush(out);
            // 关闭writer，释放内存
            word07Writer.close();
            // 关闭输出Servlet流
            IoUtil.close(out);
        }

# 二、Service 接口类 #

/**
         * 试卷导出word文档
         *
         * @param examExportDTO 试卷id和是否导出答案
         * @return 当前文件导出的路径位置
         */
        Word07Writer word(ExamExportDTO examExportDTO);

# 三、ServiceImpl 实现类 #

@Override
        public Word07Writer word(ExamExportDTO examExportDTO) {
    
            Integer examId = examExportDTO.getExamId();
            Integer isExportAnswer = examExportDTO.getIsExportAnswer();
    
            Word07Writer word07Writer = new Word07Writer();
    
            // 1、得到当前试卷信息
            Exam exam = this.getById(examId);
            // 1.1 保存试卷名称
            word07Writer.addText(new Font("方正小标宋简体", Font.PLAIN, 22), "试卷名称：" + exam.getTitle());
    
            // 2、得到当前试卷的题目列表
            List<Integer> quIds = quExamService.listByExamId(examId);
            // 题目列表用
            int count = 1;
            for (Integer quId : quIds) {
    
                // 3、得到当前题目信息
                Question question = questionMapper.selectById(quId);
    
                // 4、保存到文件中：题目 格式为（ 题目2. 多选题测试（20分））
                word07Writer.addText(new Font("宋体", Font.PLAIN, 15),
                        "题目" + (count++) + ". " + question.getContent() + "（" + (question.getQuScore()) + "分）");
    
                // 5、得到每个题目的选项列表
                List<QuAnswerDTO> quAnswerDTOList = quAnswerService.listByQu(quId);
    
                // 6、答案和解析
                StringBuilder answers = new StringBuilder();
                // 题目类型 1 单选题 2 多选题 3 判断题 4 简答题 5 填空题
                Integer quType = question.getQuType();
                for (QuAnswerDTO quAnswerDTO : quAnswerDTOList) {
                    // 添加题目选项
                    word07Writer.addText(new Font("宋体", Font.PLAIN, 10),
                            quAnswerDTO.getAbc() + "、" + quAnswerDTO.getContent());
    
                    if (isExportAnswer == Constants.NUMBER_ONE) {
                        // 得到题目选项的答案 1 正确答案，0 错误答案
                        Integer isRight = quAnswerDTO.getIsRight();
                        String dtoAbc = quAnswerDTO.getAbc();
    
                        // 得到正确答案
                        this.getAnswers(quType, isRight, answers, dtoAbc);
                    }
                }
    
                if (isExportAnswer == Constants.NUMBER_ONE) {
                    // 7、得到答案并保存到文件中
                    word07Writer.addText(new Font("宋体", Font.PLAIN, 10), "答案：" + answers);
                    // 8、得到题目整体解析
                    String analysis = question.getAnalysis();
                    word07Writer.addText(new Font("宋体", Font.PLAIN, 10),
                            "解析：" + (Objects.isNull(analysis) ? "暂无解析" : analysis));
                }
            }
    
            return word07Writer;
        }
    
        /**
         * 得到答案
         *
         * @param quType  题目类型 1 单选题 2 多选题 3 判断题 4 简答题 5 填空题
         * @param isRight 是否为正确答案 1 正确答案，0 错误答案
         * @param answers 得到的答案
         * @param dtoAbc  选项ABC
         */
        private void getAnswers(Integer quType, Integer isRight, StringBuilder answers, String dtoAbc) {
    
            if (quType == Constants.QU_TYPE_SINGLE && isRight == Constants.NUMBER_ONE) {
                answers.append(dtoAbc);
            }
            if (quType == Constants.QU_TYPE_MULTI && isRight == Constants.NUMBER_ONE) {
                answers.append(dtoAbc);
            }
            if (quType == Constants.QU_TYPE_JUDGE && isRight == Constants.NUMBER_ONE) {
                answers.append(dtoAbc);
            }
            if (quType == Constants.QU_TYPE_SHORT && isRight == Constants.NUMBER_ONE) {
                answers.append(dtoAbc);
            }
            if (quType == Constants.QU_TYPE_FILL && isRight == Constants.NUMBER_ONE) {
                answers.append(dtoAbc);
            }
        }

说明：与第一篇不同的是，将数据以流的形式通过Response返回给前端即可。浏览器会根据Response中的 content-type 类型去自动识别，然后进行下载或者保存的。

# 四、Content-Type 类型与MIME Type类型对照表 #

附：Content-Type 类型与MIME Type类型对照表（当然这只是 **office** 所有后缀的，还有其他类型，如音频、视频、图像、Html，Css等）

<table> 
 <thead> 
  <tr> 
   <th>后缀</th> 
   <th>MIME Type</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>.doc</td> 
   <td>application/msword</td> 
  </tr> 
  <tr> 
   <td>.dot</td> 
   <td>application/msword</td> 
  </tr> 
  <tr> 
   <td>.docx</td> 
   <td>application/vnd.openxmlformats-officedocument.wordprocessingml.document</td> 
  </tr> 
  <tr> 
   <td>.dotx</td> 
   <td>application/vnd.openxmlformats-officedocument.wordprocessingml.template</td> 
  </tr> 
  <tr> 
   <td>.docm</td> 
   <td>application/vnd.ms-word.document.macroEnabled.12</td> 
  </tr> 
  <tr> 
   <td>.dotm</td> 
   <td>application/vnd.ms-word.template.macroEnabled.12</td> 
  </tr> 
  <tr> 
   <td>.xls</td> 
   <td>application/vnd.ms-excel</td> 
  </tr> 
  <tr> 
   <td>.xlt</td> 
   <td>application/vnd.ms-excel</td> 
  </tr> 
  <tr> 
   <td>.xla</td> 
   <td>application/vnd.ms-excel</td> 
  </tr> 
  <tr> 
   <td>.xlsx</td> 
   <td>application/vnd.openxmlformats-officedocument.spreadsheetml.sheet</td> 
  </tr> 
  <tr> 
   <td>.xltx</td> 
   <td>application/vnd.openxmlformats-officedocument.spreadsheetml.template</td> 
  </tr> 
  <tr> 
   <td>.xlsm</td> 
   <td>application/vnd.ms-excel.sheet.macroEnabled.12</td> 
  </tr> 
  <tr> 
   <td>.xltm</td> 
   <td>application/vnd.ms-excel.template.macroEnabled.12</td> 
  </tr> 
  <tr> 
   <td>.xlam</td> 
   <td>application/vnd.ms-excel.addin.macroEnabled.12</td> 
  </tr> 
  <tr> 
   <td>.xlsb</td> 
   <td>application/vnd.ms-excel.sheet.binary.macroEnabled.12</td> 
  </tr> 
  <tr> 
   <td>.ppt</td> 
   <td>application/vnd.ms-powerpoint</td> 
  </tr> 
  <tr> 
   <td>.pot</td> 
   <td>application/vnd.ms-powerpoint</td> 
  </tr> 
  <tr> 
   <td>.pps</td> 
   <td>application/vnd.ms-powerpoint</td> 
  </tr> 
  <tr> 
   <td>.ppa</td> 
   <td>application/vnd.ms-powerpoint</td> 
  </tr> 
  <tr> 
   <td>.pptx</td> 
   <td>application/vnd.openxmlformats-officedocument.presentationml.presentation</td> 
  </tr> 
  <tr> 
   <td>.potx</td> 
   <td>application/vnd.openxmlformats-officedocument.presentationml.template</td> 
  </tr> 
  <tr> 
   <td>.ppsx</td> 
   <td>application/vnd.openxmlformats-officedocument.presentationml.slideshow</td> 
  </tr> 
  <tr> 
   <td>.ppam</td> 
   <td>application/vnd.ms-powerpoint.addin.macroEnabled.12</td> 
  </tr> 
  <tr> 
   <td>.pptm</td> 
   <td>application/vnd.ms-powerpoint.presentation.macroEnabled.12</td> 
  </tr> 
  <tr> 
   <td>.potm</td> 
   <td>application/vnd.ms-powerpoint.presentation.macroEnabled.12</td> 
  </tr> 
  <tr> 
   <td>.ppsm</td> 
   <td>application/vnd.ms-powerpoint.slideshow.macroEnabled.12</td> 
  </tr> 
 </tbody> 
</table>

完结！

[Java_Java_word_Windows]: https://blog.csdn.net/weixin_44299027/article/details/109901198