Freemaker基于word模板动态导出单个文件思路和代码详情见连接：
https://www.cnblogs.com/lsy-blogs/p/9243281.html
核心思路如下：
1、service中写方法，查询需要导出的结果list集合数据；
2、控制层中调用service方法获取结果集合数据，调用freemaker获取对应的word文件到临时目录下；
3、利用流处理，将临时目录下导出的每一个word写入到压缩文件中去，利用流输出到浏览器中，实现压缩文件下载；
4、最终将各种流关闭，并将产生的临时word文件删除；
核心是工具类和控制层的调用，核心代码如下：
控制层代码：
@RequestMapping(params = "exportBatchResultScoreWordZip")
public void exportBatchResultScoreWordZip(String ids, HttpServletRequest request,
HttpServletResponse response, DataGrid dataGrid, ModelMap modelMap) {
//获取要批量导出的result_score表的主键id数组
String[] resultScoreIds = ids.split(",");
// 调用service中的方法，获取批量导出word导出需要的目录主表、字段表信息结果集合
List<ProvinceCityResultOneVO> resultOneVOList = tBAssessResultScoreService.getWrodResultListByResultScoreIds(resultScoreIds);
List<Map<String, Object>> wordResultDataMapList = new ArrayList<Map<String, Object>>();
String departLevel = "";
String resultRarFileName = "";
for(int i = ; i < resultOneVOList.size(); i++) {
ProvinceCityResultOneVO resultOneVO = resultOneVOList.get(i);
String appraiseYear = resultOneVO.getAppraiseYear();
String departName = resultOneVO.getDepartName();
String departType = resultOneVO.getDepartType();
String fileName = appraiseYear+"年"+departName+"结果";
Map<String, Object> assessResultMap = new HashMap<String, Object>();
assessResultMap.put("assessResul", resultOneVO);
assessResultMap.put("fileName", fileName);
String templateName = "";
if("".equals(departType)) {
templateName = "provinceResultScoreBatchWordRar.xml";
}else if("".equals(departType)) {
templateName = "cityResultScoreBatchWordRar.xml";
}
if(i==) {
departLevel = departType;
}
assessResultMap.put("templateName", templateName);
wordResultDataMapList.add(assessResultMap);
}
if(StringUtil.isNotEmpty(departLevel)) {
Date nowDate = new Date();
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
String nowDateStr = simpleDateFormat.format(nowDate);
if("".equals(departLevel)) {
//省批量导出压缩文件名称赋值
resultRarFileName = "结果_"+nowDateStr;
}else if("".equals(departLevel)) {
//市批量导出压缩文件名称赋值
resultRarFileName = "结果_"+nowDateStr;
}
}
String resultFileType = "zip";
try {
WordUtils.exportMillCertificateWordZip(request, response, wordResultDataMapList,resultRarFileName,resultFileType);
} catch (IOException e) {
e.printStackTrace();
}
}
word导出工具类代码：
package com.jeecg.assessResultScore.utils; import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream; import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse; import org.jeecgframework.core.util.StringUtil; import com.jeecg.assessResultScore.vo.ProvinceCityResultOneVO; import freemarker.template.Configuration;
import freemarker.template.Template; public class WordUtils { // 配置信息,代码本身写的还是很可读的,就不过多注解了
private static Configuration configuration = null;
// 这里注意的是利用WordUtils的类加载器动态获得模板文件的位置
private static final String templateFolder = WordUtils.class.getClassLoader().getResource("../../").getPath()
+ "export/template/";
static {
configuration = new Configuration();
configuration.setDefaultEncoding("utf-8");
try {
configuration.setDirectoryForTemplateLoading(new File(templateFolder));
} catch (IOException e) {
e.printStackTrace();
}
} private WordUtils() {
throw new AssertionError();
} /**
* 下载单个word文件
* @param request 请求
* @param response 响应
* @param map word结果数据
* @param fileName 结果文件名称（不需要带后缀的）
* @param wordXmlName word模板名称
* @throws IOException
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
public static void exportMillCertificateWord(HttpServletRequest request, HttpServletResponse response, Map map,String fileName,String wordXmlName)
throws IOException {
Template freemarkerTemplate = configuration.getTemplate(wordXmlName);
File file = null;
InputStream fin = null;
ServletOutputStream out = null;
try {
// 调用工具类的createDoc方法生成Word文档
file = createDoc(map, freemarkerTemplate);
fin = new FileInputStream(file);
//根据不同浏览器，对fileName进行不同的编码
String userAgent = request.getHeader("user-agent").toLowerCase();
if (userAgent.contains("msie") || userAgent.contains("like gecko") ) {
// win10 ie edge 浏览器 和其他系统的ie
fileName = URLEncoder.encode(fileName, "UTF-8");
} else {
// fe
fileName = new String(fileName.getBytes("utf-8"), "iso-8859-1");
}
response.setCharacterEncoding("utf-8");
response.setContentType("application/msword");
// 设置浏览器以下载的方式处理该文件名
fileName = fileName+".doc";
response.setHeader("Content-Disposition",
"attachment;filename="+fileName); out = response.getOutputStream();
byte[] buffer = new byte[]; // 缓冲区
int bytesToRead = -;
// 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)) != -) {
out.write(buffer, , bytesToRead);
}
} finally {
if (fin != null) {
fin.close();
}
if (out != null) {
out.flush();
out.close();
}
if (file != null) {
file.delete(); // 删除临时文件
}
}
} /**
* 下载批量word文件到一个rar压缩文件中去
* @param request 请求
* @param response 响应
* @param mapList 存放多个word文件的信息：fileName：文件名（不需要带后缀的）、templateName：模板名称、assessResul：数据结果信息的集合
* @param resultRarFileName 最终下载的压缩文件名称
* @param resultFileType 最终下载的压缩文件格式
* @throws IOException
*/
public static void exportMillCertificateWordZip(HttpServletRequest request, HttpServletResponse response, List<Map<String, Object>> mapList,String resultRarFileName,String resultFileType)
throws IOException {
File[] docTempleFiles = new File[mapList.size()];
String[] docTempleFileName = new String[mapList.size()];
ZipOutputStream zipOutputStream = null;
try {
//遍历结果数据集合，将word模板生成的文件保存在临时文件夹中，文件记录在数组中；
for(int i = ; i < mapList.size(); i++) {
String templateName = mapList.get(i).get("templateName").toString();
if(StringUtil.isNotEmpty(templateName)) {
File docFile = new File(templateFolder+UUID.randomUUID().toString()+".doc");
// 创建 FileInputStream 对象
String fileName = mapList.get(i).get("fileName").toString();
ProvinceCityResultOneVO resultOneVO = (ProvinceCityResultOneVO)mapList.get(i).get("assessResul");
Map<String, Object> resultOneVOMap = new HashMap<String, Object>();
resultOneVOMap.put("assessResul", resultOneVO);
// 调用工具类的createDoc方法生成Word文档
Template freemarkerTemplate = configuration.getTemplate(templateName);
docFile = createZipDoc(resultOneVOMap, freemarkerTemplate,docFile);
//将doc文件放到数组中去
docTempleFiles[i] = docFile;
//将doc文件中文名称放到文件名数组中去
docTempleFileName[i] = fileName;
}
}
//根据不同浏览器，对fileName进行不同的编码
String userAgent = request.getHeader("user-agent").toLowerCase();
if (userAgent.contains("msie") || userAgent.contains("like gecko") ) {
// win10 ie edge 浏览器 和其他系统的ie
resultRarFileName = URLEncoder.encode(resultRarFileName, "UTF-8");
} else {
// fe
resultRarFileName = new String(resultRarFileName.getBytes("utf-8"), "iso-8859-1");
}
response.setCharacterEncoding("utf-8");
response.setContentType("application/octet-stream");
// 设置浏览器以下载的方式处理该文件名
resultRarFileName = resultRarFileName+"."+resultFileType;
response.setHeader("Content-Disposition",
"attachment;filename="+resultRarFileName);
zipOutputStream = new ZipOutputStream(response.getOutputStream());
//遍历文件数组，将文件压缩到zip格式的压缩文件中去,
for(int i = ; i < docTempleFiles.length; i++) {
File docFile = docTempleFiles[i];
FileInputStream fileInputStream = new FileInputStream(docFile);
ZipEntry entry = new ZipEntry(docTempleFileName[i]+".doc");
zipOutputStream.putNextEntry(entry);
int len = -;
byte[] buffer = new byte[];
while ((len = fileInputStream.read(buffer)) != -) {
zipOutputStream.write(buffer, , len);
}
zipOutputStream.closeEntry();
fileInputStream.close();
}
zipOutputStream.flush();
} finally {
if (zipOutputStream != null) {
zipOutputStream.flush();
zipOutputStream.close();
}
for(int i = ; i < docTempleFiles.length; i++) {
docTempleFiles[i].delete();//删除临时doc文件
}
}
} private static File createDoc(Map<String, Object> dataMap, Template template) {
String name = "test.doc";
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;
} private static File createZipDoc(Map<String, Object> dataMap, Template template,File f) {
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;
}
}
