微信聊天记录里的图片忘记保存原图过期了怎么办？备份微信聊天记录，图片全是一些DAT文件，无法直接预览，怎么办？
每次找个资料都可能会遇到这个问题，纠结来纠结去，终于找到了解决方案了。
可以把需要恢复的图片（在电脑的聊天记录存储里，查找*.dat，找到聊天记录时间附近的文件拷贝出来）
然后通过执行python脚本，直接得到解析后的图片成果：
完美~~~~
附代码：
[Python] 纯文本查看 复制代码
# -*- coding:utf-8 -*-
import os
into_path = r'D:/test1' # 微信图片DAT文件存放路径
out_path = r"D:/test2" # 转换后的图片存放路径
def main(into_path, out_path):
dat_list = dat_files(into_path)
lens = len(dat_list)
if lens == 0:
print('没有dat文件')
exit()
num = 0
for dat_file in dat_list:
num += 1
temp_path = into_path + '/' + dat_file
dat_file_name = dat_file[:-4]
imageDecode(temp_path, dat_file_name, out_path)
value = round((num / lens) * 100, 2)
print('正在处理--->[{}/{}] {}%'.format(num, lens, value))
def dat_files(file_dir):
dat = []
for files in os.listdir(file_dir):
if os.path.splitext(files)[1] == '.dat':
dat.append(files)
return dat
def imageDecode(temp_path, dat_file_name, out_path):
dat_read = open(temp_path, "rb")
xo, j = Format(temp_path)
if j == 1:
mat = '.png'
elif j == 2:
mat = '.gif'
else:
mat = '.jpg'
out = out_path + '/' + dat_file_name + mat
png_write = open(out, "wb")
dat_read.seek(0)
for now in dat_read:
for nowByte in now:
newByte = nowByte ^ xo
png_write.write(bytes([newByte]))
dat_read.close()
png_write.close()
def Format(f):
dat_r = open(f, "rb")
try:
a = [(0x89, 0x50, 0x4e), (0x47, 0x49, 0x46), (0xff, 0xd8, 0xff)]
for now in dat_r:
j = 0
for xor in a:
j = j + 1
i = 0
res = []
now2 = now[:3]
for nowByte in now2:
res.append(nowByte ^ xor[i])
i += 1
if res[0] == res[1] == res[2]:
return res[0], j
except:
pass
finally:
dat_r.close()
if __name__ == '__main__':
main(into_path, out_path)