spring boot 文件上传

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spring mvc 不暴露response进行文件下载.

package cn.netinnet.billServer.aop;

import java.io.File;
import java.io.IOException;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.io.FileUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.InputStreamResource;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class FileController {
	@Value("${web.upload-path}")
	private String value;
	@RequestMapping(value="/upload",method=RequestMethod.POST)
	private ModelAndView upload(MultipartHttpServletRequest  request ) {
		MultipartFile file = request.getFile("file");
		File saveFile = new File(value + "/"+file.getOriginalFilename());
		try {
			file.transferTo(saveFile);
		} catch (IllegalStateException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		ModelAndView view = new ModelAndView("/callback");
		view.addObject("jscode", "alert('添加成功')");
        return view;
	}
	
	
	@RequestMapping(value = "/media", method = RequestMethod.GET)
    public ResponseEntity<InputStreamResource> downloadFile( Long id)
            throws IOException {
        String filePath = value + "/img.jpg";
        FileSystemResource file = new FileSystemResource(filePath);
        HttpHeaders headers = new HttpHeaders();
        headers.add("Cache-Control", "no-cache, no-store, must-revalidate");
        headers.add("Content-Disposition", String.format("attachment; filename=\"%s\"", file.getFilename()));
        headers.add("Pragma", "no-cache");
        headers.add("Expires", "0");

        return ResponseEntity
                .ok()
                .headers(headers)
                .contentLength(file.contentLength())
                .contentType(MediaType.parseMediaType("application/octet-stream"))
                .body(new InputStreamResource(file.getInputStream()));
    }
}

参考: http://m.blog.csdn.net/article/details?id=51149234