【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)
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2022-06-19 10:57:28
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本文目录
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)
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)
后缀 | MIME Type |
---|---|
.doc | application/msword |
.dot | application/msword |
.docx | application/vnd.openxmlformats-officedocument.wordprocessingml.document |
.dotx | application/vnd.openxmlformats-officedocument.wordprocessingml.template |
.docm | application/vnd.ms-word.document.macroEnabled.12 |
.dotm | application/vnd.ms-word.template.macroEnabled.12 |
.xls | application/vnd.ms-excel |
.xlt | application/vnd.ms-excel |
.xla | application/vnd.ms-excel |
.xlsx | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
.xltx | application/vnd.openxmlformats-officedocument.spreadsheetml.template |
.xlsm | application/vnd.ms-excel.sheet.macroEnabled.12 |
.xltm | application/vnd.ms-excel.template.macroEnabled.12 |
.xlam | application/vnd.ms-excel.addin.macroEnabled.12 |
.xlsb | application/vnd.ms-excel.sheet.binary.macroEnabled.12 |
.ppt | application/vnd.ms-powerpoint |
.pot | application/vnd.ms-powerpoint |
.pps | application/vnd.ms-powerpoint |
.ppa | application/vnd.ms-powerpoint |
.pptx | application/vnd.openxmlformats-officedocument.presentationml.presentation |
.potx | application/vnd.openxmlformats-officedocument.presentationml.template |
.ppsx | application/vnd.openxmlformats-officedocument.presentationml.slideshow |
.ppam | application/vnd.ms-powerpoint.addin.macroEnabled.12 |
.pptm | application/vnd.ms-powerpoint.presentation.macroEnabled.12 |
.potm | application/vnd.ms-powerpoint.presentation.macroEnabled.12 |
.ppsm | application/vnd.ms-powerpoint.slideshow.macroEnabled.12 |
完结!