public void downPrintLodopFile(String [] ape505,HttpServletRequest request, HttpServletResponse response) throws Exception{
//获得文件路径
String realPath = request.getSession().getServletContext().getRealPath("/upload/上传目录");
// 不知道啥问题,在生产环境中得单独加个"/",否则在生产环境中会缺少"/"
realPath +="/";
for(int i=0;i<ape505.length-1;i++){
ape505[i]=realPath+ape505[i];
}
//执行down
down(realPath, ape505, request, response);
}
public void down(String path, String[] files, HttpServletRequest request, HttpServletResponse response) throws Exception {
// path 压缩文件初始设置
// 拼接zip文件,之后下载下来的压缩文件的名字
String base_name = "附件";
String fileZip = base_name + ".zip";
// 之后用来生成zip文件
String filePath = path + fileZip;
// 创建临时压缩文件
try {
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(filePath));
ZipOutputStream zos = new ZipOutputStream(bos);
ZipEntry ze = null;
// 将所有需要下载的文件都写入临时zip文件
for (int i = 0; i < files.length-1; i++) {
BufferedInputStream bis = new BufferedInputStream(
new FileInputStream(files[i]));
ze = new ZipEntry(
files[i].substring(files[i].lastIndexOf("\\")));
zos.putNextEntry(ze);
int s = -1;
while ((s = bis.read()) != -1) {
zos.write(s);
}
bis.close();
}
zos.flush();
zos.close();
} catch (IOException e) {
e.printStackTrace();
}
// 以上,临时压缩文件创建完成
// 进行浏览器下载
// 获得浏览器代理信息
String agent = request.getHeader("User-Agent").toUpperCase();
// 判断浏览器代理并分别设置响应给浏览器的编码格式
String finalFileName = null;
if ((agent.indexOf("MSIE") > 0)
|| ((agent.indexOf("RV") != -1) && (agent.indexOf("FIREFOX") == -1)))
finalFileName = URLEncoder.encode(fileZip, "UTF-8");
else {
finalFileName = new String(fileZip.getBytes("UTF-8"), "ISO8859-1");
}
// 告知浏览器下载文件,而不是直接打开,浏览器默认为打开
response.setContentType("application/x-download");
response.setHeader("Content-Disposition", "attachment;filename=\""
+ finalFileName + "\"");// 下载文件的名称
//输出到本地
ServletOutputStream servletOutputStream = response.getOutputStream();
DataOutputStream temps = new DataOutputStream(servletOutputStream);
// 浏览器下载临时文件的路径
DataInputStream in = new DataInputStream(new FileInputStream(filePath));
byte[] b = new byte[2048];
// 之后用来删除临时压缩文件
File reportZip = new File(filePath);
try {
while ((in.read(b)) != -1) {
temps.write(b);
}
temps.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (temps != null) {
temps.close();
}
if (in != null) {
in.close();
}
// 删除服务器本地产生的临时压缩文件
if (reportZip != null){
reportZip.delete();
}
servletOutputStream.close();
}
}