springboot分片下载的代码
时间: 2023-11-09 11:09:18 浏览: 23
由于您没有给出具体的需求,我只能提供一个简单的示例代码,希望能对您有所帮助。
@RestController
public class DownloadController {
@GetMapping("/download")
public void download(HttpServletResponse response) throws IOException {
// 文件路径
String filePath = "/path/to/file";
// 文件名称
String fileName = "filename.ext";
// 分片大小
int chunkSize = 1024 * 1024; // 1MB
// 文件长度
long fileLength = new File(filePath).length();
// 设置响应头
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
response.setHeader("Content-Length", String.valueOf(fileLength));
// 分片下载
int chunkIndex = 0;
byte[] buffer = new byte[chunkSize];
InputStream inputStream = new FileInputStream(filePath);
OutputStream outputStream = response.getOutputStream();
while (chunkIndex * chunkSize < fileLength) {
int readLength = inputStream.read(buffer);
if (readLength == -1) {
break;
}
outputStream.write(buffer, 0, readLength);
outputStream.flush();
chunkIndex++;
}
inputStream.close();
outputStream.close();
}
}