图片的获取和上传

package com.jq.nfzl.system.controller;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.UUID;

import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import com.jq.nfzl.web.entity.NfAttachment;

import net.coobird.thumbnailator.Thumbnails;

@Controller
public class ImgController {
	
	@Value("${file.savePath}")
	private String dir;
	
//	@Autowired
//	private NfInfoMapper m;
//	
//	@Autowired
//	private NfAttachmentDao n;
	
	/**
	 * 图片获取
	 * @param response
	 * @param path
	 * @throws FileNotFoundException
	 * @throws IOException
	 */
	@RequestMapping("/img")
	public void getImg(HttpServletResponse response, String path) throws FileNotFoundException, IOException {
		try {
			if (StringUtils.isEmpty(path) || path.indexOf("../") > -1) {
				response.sendRedirect("/static/img/noImg.jpg");
				return;
			}
			BufferedImage bi = null;
			if("D:".equals(path.substring(0, 2))){
				 bi = ImageIO.read(new File(path));
			}else{
				 bi = ImageIO.read(new File(dir + path));
			}
			
			bi = Thumbnails.of(bi).size(800, 600).asBufferedImage();
			String ext = path.substring(path.lastIndexOf(".") + 1);
			if ("jpg".equalsIgnoreCase(ext) || "jpeg".equalsIgnoreCase(ext)) {
				response.setContentType("image/jpg");
				ImageIO.write(bi, "jpg", response.getOutputStream());
			} else if ("png".equalsIgnoreCase(ext)) {
				response.setContentType("image/png");
				ImageIO.write(bi, "png", response.getOutputStream());
			} else if ("gif".equalsIgnoreCase(ext)) {
				response.setContentType("image/gif");
				ImageIO.write(bi, "gif", response.getOutputStream());
			} else {
				response.sendRedirect("/static/img/noImg.jpg");
			}
		} catch (IOException e) {
			response.sendRedirect("/static/img/noImg.jpg");
		}
	}
	
	/**
	 * 图片上传
	 * @param files
	 * @return
	 * @throws IllegalStateException
	 * @throws IOException
	 */
	@RequestMapping("/uploadImg")
	@ResponseBody
	public List<NfAttachment> uploadImg(HttpServletRequest request, HttpServletResponse response, MultipartFile[] files) throws IllegalStateException, IOException {
		response.setHeader("Access-Control-Allow-Origin", "*");
		List<NfAttachment> result = new ArrayList<>();
		String dataDir = new SimpleDateFormat("yyyyMMdd").format(new Date());
		File path = new File(dir + dataDir + "/");
		if (!path.exists()) {
			path.mkdirs();
		}
		for (MultipartFile file : files) {
			NfAttachment attachment = new NfAttachment();
			String originalFilename = file.getOriginalFilename();
			String filePath = dataDir + "/" + UUID.randomUUID().toString().replaceAll("-", "") + "."
					+ originalFilename.substring(originalFilename.lastIndexOf(".") + 1);
			file.transferTo(new File(dir + filePath));
			attachment.setAttachmentName(originalFilename);
			attachment.setAttachmentPath(filePath);
			result.add(attachment);
		}
		return result;
	}
	
//	@RequestMapping("/testImg")
//	@ResponseBody
//	public Result test() throws IOException {
//		String ddd = "D:\nfzlFiles\";
//		String prev = "20180323";
//		File file = new File("C:\Users\Administrator\Desktop\新建文件夹");
//		for (File dir : file.listFiles()) {
//			String cm = dir.getName();
//			for (File f : dir.listFiles()) {
//				String u = f.getName().substring(0, f.getName().lastIndexOf(".")).replaceAll("\d", "");
//				List<NongfangInfo> infos = m.getNf(u, cm);
//				if (infos.size() == 0) {
//					
//				} else if (infos.size() > 1) {
//					System.out.println();
//				} else {
//					String fileName = UUID.randomUUID().toString().replaceAll("-", "") + f.getName().substring(f.getName().lastIndexOf("."));
//					File tmp = new File(ddd + prev + "/" + fileName);
//					copyFile(f, tmp);
//					NongfangInfo info = infos.get(0);
//					NfAttachment attachment = new NfAttachment();
//					attachment.setAttachmentName(f.getName());
//					attachment.setAttachmentPath(prev + "/" + fileName);
//					attachment.setAttachmentType(3);
//					attachment.setRelId(info.getId());
//					n.insertNfAttachment(attachment);
//					f.delete();
//				}
//			}
//		}
//		return Result.SUCCESS;
//	}
//	
//	public static void main(String[] args) {
//		File file = new File("C:\Users\Administrator\Desktop\新建文件夹");
//		for (File dir : file.listFiles()) {
//			String cm = dir.getName();
//			for (File f : dir.listFiles()) {
//				System.out.println(f.getName().substring(0, f.getName().lastIndexOf(".")).replaceAll("\d", ""));
//			}
//		}
//	}
//	
//	public void copyFile(File fromFile,File toFile) throws IOException{
//        FileInputStream ins = new FileInputStream(fromFile);
//        FileOutputStream out = new FileOutputStream(toFile);
//        byte[] b = new byte[10*1024];
//        int n=0;
//        while((n=ins.read(b))!=-1){
//            out.write(b, 0, n);
//        }
//        
//        ins.close();
//        out.close();
//    }
}