首先安装
代码语言：javascript复制pip install pillow如果报错，请根据报错的信息去搜索一下，一般都能得到解决，未找到请升级pip
代码语言：javascript复制python -m pip install --upgrade pip或者
代码语言：javascript复制pip install --upgrade pip那么写个方法
代码语言：javascript复制from PIL import Image,ExifTags
#定义保存图片都路径
def get_outfile(infile, outfile):
if outfile:
return outfile
dir, suffix = os.path.splitext(infile)
outfile = '{}-cover{}'.format(dir, suffix)
return outfile
#缩小图片大小，保持原始宽高
def compress_image(infile, outfile='', kb=3200, step=5, quality=80):
o_size = os.path.getsize(infile) / 1024
if o_size <= kb:
return False
outfile = self.get_outfile(infile, outfile)
while o_size > kb:
img = Image.open(infile)
#相机或手机拍摄图片需要根据exif旋转角度
try:
for orientation in ExifTags.TAGS.keys():
if ExifTags.TAGS[orientation] == 'Orientation': break
exif = dict(img._getexif().items())
if exif[orientation] == 3:
img = img.rotate(180, expand=True)
elif exif[orientation] == 6:
img = img.rotate(270, expand=True)
elif exif[orientation] == 8:
img = img.rotate(90, expand=True)
except:
pass
img.save(outfile, quality=quality)
if quality - step < 0:
break
quality -= step
o_size = os.path.getsize(outfile) / 1024
return outfilecompress_image(infile, outfile='', kb=3200, step=5, quality=80)
infile : 原始图片路径
outfile: 生成图片保存路径
kb : 图片压缩上限，单位kb
step : 每次压缩质量，
quality: 图片质量，jpg特有，最高为100的质量使用
代码语言：javascript复制small_path = compress_image(image_path)
if not small_path:
small_path = image_path在某个项目中用到，就记录一下吧～特别是碰到图片上传后改变了方向的，特别郁闷，所以找到了解决方案
代码语言：javascript复制img = Image.open(infile)
#相机或手机拍摄图片需要根据exif旋转角度
try:
for orientation in ExifTags.TAGS.keys():
if ExifTags.TAGS[orientation] == 'Orientation': break
exif = dict(img._getexif().items())
if exif[orientation] == 3:
img = img.rotate(180, expand=True)
elif exif[orientation] == 6:
img = img.rotate(270, expand=True)
elif exif[orientation] == 8:
img = img.rotate(90, expand=True)
except:
pass
img.save(outfile, quality=100)
