1，java通过浏览器下载文件
bash
复制代码
@ApiOperation(value = "导出", notes = "", response = String.class)
@GetMapping("/export")
public HttpServletResponse export(String path, HttpServletResponse response) {
// String path = "/home/lilun.txt";
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;
}
2，复制文件到其他文件夹
bash
复制代码
//复制文件到指定文件夹
public void copyFile(String path){
int lastIndex = path.lastIndexOf("/");
String fileName = path.substring(lastIndex+1,path.length());
String targetDir = "/home/fy/targetexportdata/";
String targetDirFile = targetDir+fileName;
File fs = new File(targetDir);
if (!fs.exists()) {
fs.mkdirs();
}
try (FileInputStream fis = new FileInputStream(path);
FileOutputStream fos = new FileOutputStream(targetDirFile)) {
byte[] buffer = new byte[1024];
int bytesRead;
while ((bytesRead = fis.read(buffer)) != -1) {
fos.write(buffer, 0, bytesRead);
}
System.out.println("文件复制成功！");
} catch (IOException e) {
e.printStackTrace();
}
}