一、需求说明

需要达到如下效果：根据需求导出word文档，在模板中渲染不通的参数图片

二、制作模板文件

1.修改word留下占位符并另存为.xml文件

此处我的占位符为username

2.将xml文件后缀名改为.ftl

3.打开ftl文件格式化内容

格式化地址：http://www.bejson.com/otherformat/xmlsort

4.将占位符替换成变量

需要会使用freemarker语法
将占位符替换成freemarker变量

三、代码实现

1.引入依赖

自行更改自己的依赖版本

<!--freemarker使用start-->
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--freemarker使用end-->

2.将模板引入resource下

3.编写word导出工具包

import freemarker.template.Configuration;
import freemarker.template.Template;
import lombok.extern.slf4j.Slf4j;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.Map;
import java.util.UUID;/*** word导出工具*/
@Slf4j
public class WordUtils {private static Configuration configuration = null;//配置private static  String templateFolder;static {templateFolder = WordUtils.class.getResource("/templates").getPath();configuration = new Configuration();configuration.setDefaultEncoding("utf-8");try {log.info("模板配置路径:" + templateFolder);configuration.setDirectoryForTemplateLoading(new File(templateFolder));} catch (IOException e) {e.printStackTrace();}}private WordUtils() {throw new AssertionError();}/*** 导出word** @param request* @param response* @param map      参数* @param wordName 模板名，示例xxx.ftl* @param fileName 要到处的word文件名称,示例:test.doc* @throws IOException*/public static void exportMillCertificateWord(HttpServletRequest request, HttpServletResponse response, Map map, String wordName, String fileName) throws IOException {Template freemarkerTemplate = configuration.getTemplate(wordName);File file = null;InputStream fin = null;ServletOutputStream out = null;String uuName=UUID.randomUUID().toString();try {// 调用createDoc方法生成Word文档file = createDoc(map, freemarkerTemplate, uuName);fin = new FileInputStream(file);response.setCharacterEncoding("utf-8");response.setContentType("application/x-download");fileName = new String(fileName.getBytes(), "ISO-8859-1");response.setHeader("Content-Disposition", "attachment;filename=".concat(String.valueOf(fileName)));out = response.getOutputStream();byte[] buffer = new byte[512];// 缓冲区int bytesToRead = -1;// 通过循环将读入的Word文件的内容输出到浏览器中while ((bytesToRead = fin.read(buffer)) != -1) {out.write(buffer, 0, bytesToRead);}} finally {if (fin != null) fin.close();if (out != null) out.close();if (file != null) file.delete();// 删除临时文件}}private static File createDoc(Map<?, ?> dataMap, Template template, String name) {File f = new File(name);Template t = template;try {//这个地方不能使用FileWriter因为需要指定编码类型否则生成的Word文档会因为有无法识别的编码而无法打开Writer w = new OutputStreamWriter(new FileOutputStream(f), "utf-8");t.process(dataMap, w);w.close();} catch (Exception ex) {ex.printStackTrace();throw new RuntimeException(ex);}return f;}
}

4.创建接口调用

/*** 打印导出* @param dclx 导出类型：zhdy桌号打印、dzddy对照单打印、zkzdy准考证打印*/
@RequestMapping(value = "xxxxxForWord")
public void xxxxxForWord(HttpServletRequest request, HttpServletResponse response, HttpSession session) throws IOException {//封装word需要的数据Map<String, Object> map = new HashMap<>();map.put("teachers",list);//模板名String wordName="teacher.ftl";//导出文件名String fileName="invite_teacher_"+System.currentTimeMillis()+".doc";WordUtils.exportMillCertificateWord(request, response, map, wordName, fileName);
}