少年就是少年，他们看春风不喜，看夏蝉不烦，看秋风不悲，看冬雪不叹，看满身富贵懒察觉，看不公不允敢面对，只因他们是少年。
文件下载
public HttpServletResponse download(String path, HttpServletResponse response) {
try {
// path是指欲下载的文件的路径。
File file = new File(path);
// 取得文件名。
String filename = file.getName();
// 取得文件的后缀名。
String ext = filename.substring(filename.lastIndexOf(".") + 1).toUpperCase();
// 以流的形式下载文件。
InputStream fis = new BufferedInputStream(new FileInputStream(path));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
// 清空response
response.reset();
// 设置response的Header
response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes()));
response.addHeader("Content-Length", "" + file.length());
OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
response.setContentType("application/octet-stream");
toClient.write(buffer);
toClient.flush();
toClient.close();
} catch (IOException ex) {
ex.printStackTrace();
}
return response;
}
public void downloadLocal(HttpServletResponse response) throws FileNotFoundException {
// 下载本地文件
String fileName = "Operator.doc".toString(); // 文件的默认保存名
// 读到流中
InputStream inStream = new FileInputStream("c:/Operator.doc");// 文件的存放路径
// 设置输出的格式
response.reset();
response.setContentType("bin");
response.addHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
// 循环取出流中的数据
byte[] b = new byte[100];
int len;
try {
while ((len = inStream.read(b)) > 0)
response.getOutputStream().write(b, 0, len);
inStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public void downloadNet(HttpServletResponse response) throws MalformedURLException {
// 下载网络文件
int bytesum = 0;
int byteread = 0;
URL url = new URL("windine.blogdriver.com/logo.gif");
try {
URLConnection conn = url.openConnection();
InputStream inStream = conn.getInputStream();
FileOutputStream fs = new FileOutputStream("c:/abc.gif");
byte[] buffer = new byte[1204];
int length;
while ((byteread = inStream.read(buffer)) != -1) {
bytesum += byteread;
System.out.println(bytesum);
fs.write(buffer, 0, byteread);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
文件下载二
public void download(HttpServletRequest request, HttpServletResponse response,InputStream inputSteam, String fileRealName)
throws UnsupportedEncodingException, IOException {
// 处理下,如果文件名称存在逗号,google浏览器不能下载,换为下划线
fileRealName = fileRealName.replace(",", "_");
fileRealName = fileRealName.replace("，", "_");
response.setCharacterEncoding("utf-8");
response.setContentType("multipart/form-data");
String downloadFileName = "";
if (request.getHeader("User-Agent").toUpperCase().indexOf("MSIE") > 0
|| request.getHeader("User-Agent").toUpperCase().indexOf("LIKE GECKO") > 0) {
downloadFileName = URLEncoder.encode(fileRealName, "UTF-8");
} else {
downloadFileName = new String(fileRealName.getBytes("UTF-8"),
"ISO8859-1");
}
response.setHeader("Content-disposition", "attachment; filename="
+ downloadFileName);
BufferedInputStream bis = null;
BufferedOutputStream bos = null;
bis = new BufferedInputStream(inputSteam);
bos = new BufferedOutputStream(response.getOutputStream());
byte[] buff = new byte[2048];
int bytesRead;
while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
bos.write(buff, 0, bytesRead);
}
inputSteam.close();
bis.close();
bos.close();
}
try {
InputStream is = new FileInputStream("D:/tomcat7/webapps/temp/HT_1596452307000876586.pdf");
super.download(request, response, is, "项目申报书.pdf");
//declarationService.downloadLocal(response,path);
} catch (Exception e) {
e.printStackTrace();
}
