JAVA上传批量下载文件

String basePath = request().getContextPath();
basePath = request().getScheme() + "://" + request().getServerName() + ":" + request().getServerPort() + basePath + "/";
String realPath = request().getSession().getServletContext().getRealPath(""); // 获取服务器真实路径地址
String root = "upload";
String article = "article";
String dir = ServletActionContext.getServletContext().getRealPath("/" + root);
dir = dir.replaceAll("\\\\", "/");
File f0 = new File(dir);// 根目录upload
if (!f0.exists()) {
f0.mkdir();
}
dir = dir + "/" + article;// 论述题目录article
File f1 = new File(dir);
if (!f1.exists()) {
f1.mkdir();
}
dir = dir + "/" + peExamBatch.getId();// 当前批次目录
File f2 = new File(dir);
if (!f2.exists()) {
f2.mkdir();
}
String code = bzzStudent.getPeEnterprise().getEnumConstByFlagSheng().getId();
dir = dir + "/" + code;// 省份目录
File f3 = new File(dir);
if (!f3.exists()) {
f3.mkdir();
}
dir = dir + "/" + bzzStudent.getRegNo() + prefix;
if (getUpload() != null && !"".equals(getUpload().getPath())) {
FileInputStream fis = new FileInputStream(getUpload());
// 其实这里可以判断articlePath文件是否存在,如果存在直接存放而省去取批次,省以及学号等的数据库操作.安全起见
FileOutputStream fos = new FileOutputStream(dir);
int i = 0;
byte[] buf = new byte[1024];
while ((i = fis.read(buf)) != -1) {
fos.write(buf, 0, i);
}
fos.flush();
fos.close();
String fullpath = root + "/" + article + "/" + peExamBatch.getId() + "/" + code;// upload/article/当前批次ID/企业所在省CODE
String photoURL = basePath + fullpath + "/" + bzzStudent.getRegNo() + prefix;// 文件名为
// 学号+后缀
peBzzExamScore.setArticlePath(photoURL);
this.getGeneralService().save(peBzzExamScore);
request().setAttribute("js", "alert('您的论述题已成功上传!');window.location='/entity/workspaceStudent/bzzstudent_aboutArticle.action';");
}

String root = "upload";
String article = "article";
String m = "alert('当前%s下还没有论述题');";
String dir = ServletActionContext.getServletContext().getRealPath("/" + root);
dir = dir.replaceAll("\\\\", "/");
String upload = dir;// 记录下upload目录
File f0 = new File(dir);// 根目录upload
if (!f0.exists()) {
request().setAttribute("js", String.format(m, "根目录"));
return "message";
}
dir = dir + "/" + article;// 论述题目录article
File f1 = new File(dir);
if (!f1.exists()) {
request().setAttribute("js", String.format(m, "论述题目录"));
return "message";
}
dir = dir + "/" + peBzzExamBatch.getId();// 当前批次目录
File f2 = new File(dir);
if (!f2.exists()) {
request().setAttribute("js", String.format(m, "批次"));
return "message";
}
String zip = dir + "/zip";// 临时目录用于存放压缩后文件目录
String srctemp = dir + "/srctemp";// 临时目录用于存放要压缩文件的目录
String provid = request().getParameter("prov");
if (StringUtils.isEmpty(provid)) {
request().setAttribute("js", "alert('请先选择省份!');");
return "message";
}
dir = dir + "/" + provid;// 省份
File f3 = new File(dir);
if (!f3.exists()) {
request().setAttribute("js", String.format(m, "省份"));
return "message";
}
File f4 = new File(zip);
if (!f4.exists()) {
f4.mkdir();
}
String enterpriseid = request().getParameter("enterprise");
FileManage filemanage = FileManageFactory.creat();
try {
if (StringUtils.isNotEmpty(enterpriseid) && !"-1".equals(enterpriseid)) {// 如果选择了一级工作单位
DetachedCriteria score = DetachedCriteria.forClass(PeBzzExamScore.class);
DetachedCriteria student = score.createCriteria("peBzzStudent", "peBzzStudent");
DetachedCriteria pe = student.createCriteria("peEnterprise", "peEnterprise");
student.add(Restrictions.or(Restrictions.eq("peBzzStudent.peEnterprise.id", enterpriseid), Restrictions.eq("peEnterprise.peEnterprise.id", enterpriseid)));
score.createCriteria("enumConstByFlagExamScoreStatus", "enumConstByFlagExamScoreStatus");
score.add(Restrictions.eq("enumConstByFlagExamScoreStatus.id", "402880a9aaadc115061dadfcf26b0003"));// 已审核
String enterpriseid2 = request().getParameter("enterprise2");
if (StringUtils.isNotEmpty(enterpriseid2) && !"-1".equals(enterpriseid2)) {// 如果选择了二级工作单位
pe.add(Restrictions.eq("peEnterprise.id", enterpriseid2));
}
List<PeBzzExamScore> scores = this.getGeneralService().getDetachList(score);
if (scores != null && scores.size() == 0) {
request().setAttribute("js", "alert('当前条件下没有论述题');");
return "message";
}
File f5 = new File(srctemp);
if (!f5.exists()) {
f5.mkdir();
}
dir = srctemp;
for (PeBzzExamScore s : scores) {
String path = s.getArticlePath();
if (StringUtils.isNotEmpty(path)) {
int index = path.indexOf("/article");
if (index > 0) {
String str = path.substring(index);
filemanage.copyFile(upload + str, srctemp);// 复制文件
}
}
}
}
String targetFile = zip + "/" + provid + ".zip";
if (filemanage.isExist(targetFile)) {
filemanage.delete(targetFile);
}
if (!filemanage.getSize(dir).equals("0B")) {
filemanage.zip(dir, targetFile);// 压缩至指定文件夹
String basePath = request().getContextPath();
basePath = request().getScheme() + "://" + request().getServerName() + ":" + request().getServerPort() + basePath + "/";
int index = targetFile.indexOf("upload/");
if (index > 0) {
String str = targetFile.substring(index);
// request().setAttribute("js",
// String.format("window.open('%s');", basePath+str));
request().setAttribute("msg", "下载页面");
request().setAttribute("js", String.format("window.location.href='%s';", basePath + str));
return "message";
}
} else {
request().setAttribute("js", "alert('当前条件下没有论述题');");
return "message";
}
} catch (Exception e) {
request().setAttribute("msg", "导出失败!");
e.printStackTrace();
}
return "message";