今天给大家分享一个多文件压缩下载的工具类，可自定义每个压缩文件的文件名。

代码如下：

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.List;
import java.util.Map;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;public class DownLoad {/*** 多文件压缩下载* @param list （map里面存每个文件的信息：URL：文件路径；NAME：单个文件下载后的文件名）* @param attachmentName 压缩包的名称* @param request* @param response* @return* @throws Exception*/public static boolean downLoadMany(List<Map<String, Object>> list, String attachmentName, HttpServletRequest request, HttpServletResponse response) throws Exception {boolean bool = false;BufferedInputStream bis = null;// 生成一个文件包String zipPath = "F:\file/" + attachmentName + ".zip";// 压缩路径try {ZipOutputStream zipOutputStream = new ZipOutputStream(new FileOutputStream(zipPath));String fileName = "";for (int i = 0; i < list.size(); i++) {fileName = list.get(i).get("NAME") + fileName.substring(fileName.lastIndexOf("."));// 最终文件路径+名称String path = list.get(i).get("URL").toString();bis = new BufferedInputStream(new FileInputStream(path));ZipEntry zipEntry = new ZipEntry(fileName);zipOutputStream.putNextEntry(zipEntry);// 读取文件内容byte[] buffer = new byte[1024]; // 创建存放输入流的缓冲int num = -1; // 读入的字节数while ((num = bis.read(buffer)) > 0) {zipOutputStream.write(buffer, 0, num);}zipOutputStream.closeEntry();bis.close();}zipOutputStream.close();// 调用下载downLoad_HTTP(attachmentName + ".zip", request, response);bool = true;File demoFile = new File(zipPath);if (demoFile.exists()) {demoFile.delete();}} catch (Exception e) {e.printStackTrace();bool = false;}return bool;}public static void downLoad_HTTP(String attachment, HttpServletRequest request, HttpServletResponse response) {response.reset();response.setContentType("application/x-msdownload");try {response.addHeader("Content-Disposition", "attachment;   filename=" + new String(attachment.getBytes("GB2312"), "ISO-8859-1"));} catch (UnsupportedEncodingException e1) {e1.printStackTrace();}BufferedInputStream bis = null;BufferedOutputStream bos = null;try {// 最终文件路径+名称String path = "F:\file/" + attachment;bis = new BufferedInputStream(new FileInputStream(path));bos = new BufferedOutputStream(response.getOutputStream());byte[] buff = new byte[1024];while ((bis.read(buff, 0, buff.length)) != -1) {bos.write(buff, 0, buff.length);}bos.flush();} catch (Exception e) {e.printStackTrace();} finally {try {if (bos != null)bos.close();if (bis != null)bis.close();} catch (IOException e) {e.printStackTrace();}}}}