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import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;

@Slf4j
@RestController
@RequestMapping("/download")
public class DownloadController {

@ApiOperation("下载")
@GetMapping
public void download(HttpServletRequest request, HttpServletResponse response, String path){

    //文件名
    String fileName = path.substring(path.lastIndexOf("/") + 1);
    String contentType = "application/octet-stream";
    try {

        response.setContentType("text/html;charset=UTF-8");
        request.setCharacterEncoding("UTF-8");
        BufferedInputStream bis = null;
        BufferedOutputStream bos = null;

        long fileLength = new File(path).length();

        response.setContentType(contentType);
        response.setHeader("Content-disposition",
                "attachment; filename=" + new String(fileName.getBytes("utf-8")));
        response.setHeader("Content-Length", String.valueOf(fileLength));

        bis = new BufferedInputStream(new FileInputStream(path));
        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);
        }
        bis.close();
        bos.close();
    } catch (Exception e) {
        log.error("导出文件失败", e);
    }
}

}

本文标签： 文件路径浏览器Java

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