转自：https://www.jianshu.com/p/0a40b90cc72c

转这篇文章，一来是给自己做个笔记。二来是进行补充，让更多人更好的受益。

1、导入maven

       <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-base</artifactId>
            <version>3.0.3</version>
        </dependency>
        <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-web</artifactId>
            <version>3.0.3</version>
        </dependency>
        <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-annotation</artifactId>
            <version>3.0.3</version>
        </dependency>

2、封装utils

package com.xdx97.party.common.utils.word;

import cn.afterturn.easypoi.word.WordExportUtil;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.springframework.util.Assert;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.util.Map;

public class ExportWordUtils {
    /**
     * 导出word
     * <p>第一步生成替换后的word文件，只支持docx</p>
     * <p>第二步下载生成的文件</p>
     * <p>第三步删除生成的临时文件</p>
     * 模版变量中变量格式：{{foo}}
     * @param templatePath word模板地址
     * @param temDir 生成临时文件存放地址
     * @param fileName 文件名
     * @param params 替换的参数
     * @param request HttpServletRequest
     * @param response HttpServletResponse
     */
    public static void exportWord(String templatePath, String temDir, String fileName, Map<String, Object> params, HttpServletRequest request, HttpServletResponse response) {
        Assert.notNull(templatePath,"模板路径不能为空");
        Assert.notNull(temDir,"临时文件路径不能为空");
        Assert.notNull(fileName,"导出文件名不能为空");
        Assert.isTrue(fileName.endsWith(".docx"),"word导出请使用docx格式");
        if (!temDir.endsWith("/")){
            temDir = temDir + File.separator;
        }
        File dir = new File(temDir);
        if (!dir.exists()) {
            dir.mkdirs();
        }
        try {
            String userAgent = request.getHeader("user-agent").toLowerCase();
            if (userAgent.contains("msie") || userAgent.contains("like gecko")) {
                fileName = URLEncoder.encode(fileName, "UTF-8");
            } else {
                fileName = new String(fileName.getBytes("utf-8"), "ISO-8859-1");
            }
            XWPFDocument doc = WordExportUtil.exportWord07(templatePath, params);
            String tmpPath = temDir + fileName;
            FileOutputStream fos = new FileOutputStream(tmpPath);
            doc.write(fos);
            // 设置强制下载不打开
            response.setContentType("application/force-download");
            // 设置文件名
            response.addHeader("Content-Disposition", "attachment;fileName=" + fileName);
            OutputStream out = response.getOutputStream();
            doc.write(out);
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            delFileWord(temDir,fileName);//这一步看具体需求，要不要删
        }
    }
    /**
     * 删除零时生成的文件
     */
    public static void delFileWord(String filePath, String fileName){
        File file =new File(filePath+fileName);
        File file1 =new File(filePath);
        file.delete();
        file1.delete();
    }
}

3、创建word模板



4、测试代码

package com.xdx97.party.service.api.common;

import com.xdx97.party.common.utils.word.ExportWordUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.HashMap;
import java.util.Map;

@Controller
public class Demo {

    @RequestMapping("/demo/export")
    public void export(HttpServletRequest request, HttpServletResponse response){
        Map<String,Object> params = new HashMap<>();
        params.put("title","这是标题");
        params.put("name","李四");
        //这里是我说的一行代码
        ExportWordUtils.exportWord("word/export.docx","F:/test","aaa.docx",params,request,response);
    }
}

测试代码和word模板相对位置


测试结果



注：我的请求地址的api是我设置的前缀，你的没有

如果你还想设置导出字体样式看这里:java根据模板导出word设置字体样式【springboot+poi】