SpringBoot如何基于POI-tl和word模板导出庞大的Word文件

XWPFTemplate template = XWPFTemplate.compile("template.docx").render(
new HashMap<String, Object>(){{
put("title", "Hi, poi-tl Word模板引擎");
}});
template.writeAndClose(new FileOutputStream("output.docx"));

Map<String, Object> data = new HashMap<>();
data.put("name", "Sayi");
data.put("start_time", "2019-08-04");

public class Data {
private String name;
private String startTime;
private Author author;
}

template.write(OutputStream stream);

template.write(new FileOutputStream("output.docx"));

response.setContentType("application/octet-stream");
response.setHeader("Content-disposition","attachment;filename=\""+"out_template.docx"+"\"");

// HttpServletResponse response
OutputStream out = response.getOutputStream();
BufferedOutputStream bos = new BufferedOutputStream(out);
template.write(bos);
bos.flush();
out.flush();
PoitlIOUtils.closeQuietlyMulti(template, bos, out); // 最后不要忘记关闭这些流。

<dependency>
<groupId>com.deepoove</groupId>
<artifactId>poi-tl</artifactId>
<version>1.12.0</version>
</dependency>

<dependency>
<groupId>com.deepoove</groupId>
<artifactId>poi-tl-plugin-highlight</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>com.deepoove</groupId>
<artifactId>poi-tl-plugin-markdown</artifactId>
<version>1.0.3</version>
</dependency>

@ApiOperation("Download Word")
@GetMapping("/word/download")
public void download(HttpServletResponse response){
try {
XWPFTemplate document = userService.generateWordXWPFTemplate();
response.reset();
response.setContentType("application/octet-stream");
response.setHeader("Content-disposition",
"attachment;filename=user_word_" + System.currentTimeMillis() + ".docx");
OutputStream os = response.getOutputStream();
document.write(os);
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}

@Override
public XWPFTemplate generateWordXWPFTemplate() throws IOException {
Map<String, Object> content = new HashMap<>();
content.put("title", "Java 全栈知识体系");
content.put("author", "pdai");
content.put("site", new HyperlinkTextRenderData("https://pdai.tech", "https://pdai.tech"));

content.put("poiText", "Apache POI 是创建和维护操作各种符合Office Open XML（OOXML）标准和微软的OLE 2复合文档格式（OLE2）的Java API。用它可以使用Java读取和创建,修改MS Excel文件.而且,还可以使用Java读取和创建MS Word和MSPowerPoint文件。更多请参考[官方文档](https://poi.apache.org/index.html)");

content.put("poiText2", "生成xls和xlsx有什么区别？POI对Excel中的对象的封装对应关系？");
content.put("poiList", Numberings.create("excel03只能打开xls格式，无法直接打开xlsx格式",
"xls只有65536行、256列; xlsx可以有1048576行、16384列",
"xls占用空间大, xlsx占用空间小，运算速度也会快一点"));

RowRenderData headRow = Rows.of("ID", "Name", "Email", "TEL", "Description").textColor("FFFFFF")
.bgColor("4472C4").center().create();
TableRenderData table = Tables.create(headRow);
getUserList()
.forEach(a -> table.addRow(Rows.create(a.getId() + "", a.getUserName(), a.getEmail(), a.getPhoneNumber() + "", a.getDescription())));
content.put("poiTable", table);

Resource resource = new ClassPathResource("pdai-guli.png");
content.put("poiImage", Pictures.ofStream(new FileInputStream(resource.getFile())).create());

return XWPFTemplate.compile(new ClassPathResource("poi-tl-template.docx").getFile()).render(content);
}

private List<User> getUserList(){
List<User> userList = new ArrayList<>();
for (int i = 0; i < 5; i++) {
userList.add(User.builder()
.id(Long.parseLong(i + "")).userName("pdai" + i).email("pdai@pdai.tech" + i).phoneNumber(121231231231L)
.description("hello world" + i)
.build());
}
return userList;
}

@ApiOperation("Download Word based on markdown")
@GetMapping("/word/downloadMD")
public void downloadMD(HttpServletResponse response){
try {
XWPFTemplate document = userService.generateWordXWPFTemplateMD();
response.reset();
response.setContentType("application/octet-stream");
response.setHeader("Content-disposition",
"attachment;filename=user_word_" + System.currentTimeMillis() + ".docx");
OutputStream os = response.getOutputStream();
document.write(os);
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}

@Override
public XWPFTemplate generateWordXWPFTemplateMD() throws IOException {
MarkdownRenderData code = new MarkdownRenderData();

Resource resource = new ClassPathResource("test.md");
code.setMarkdown(new String(Files.readAllBytes(resource.getFile().toPath())));
code.setStyle(MarkdownStyle.newStyle());

Map<String, Object> data = new HashMap<>();
data.put("md", code);

Configure config = Configure.builder().bind("md", new MarkdownRenderPolicy()).build();

return XWPFTemplate.compile(new ClassPathResource("markdown_template.docx").getFile(), config).render(data);
}