jsp批量下载

<%@ page import="java.io.*, java.util.zip.*, javax.servlet.http.*" %>
<%
    response.setContentType("application/zip");
    response.setHeader("Content-Disposition", "attachment; filename=\"files.zip\"");

    ZipOutputStream zos = new ZipOutputStream(response.getOutputStream());

    // 假设有一个文件列表需要下载
    String[] files = {"file1.txt", "file2.txt", "file3.txt"};
    for (String file : files) {
        FileInputStream fis = new FileInputStream(application.getRealPath("/") + file);
        ZipEntry zipEntry = new ZipEntry(file);
        zos.putNextEntry(zipEntry);

        byte[] bytes = new byte[1024];
        int length;
        while ((length = fis.read(bytes)) >= 0) {
            zos.write(bytes, 0, length);
        }
        fis.close();
        zos.closeEntry();
    }
    zos.close();
%>