java 上传图片的两种方式

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一.MultipartFile

picture.transferTo(file);

//picture(MultipartFile类型),file(File类型)(上传的路径+文件名)

二.ImageIO

BufferedImage image = new BufferedImage(width_pic, height_pic, BufferedImage.TYPE_INT_ARGB);

File file = new File(path);

ImageIO.write(image, "png", file);