折腾：
【未解决】用Python处理印象笔记帖子：缩放图片并保存回印象笔记
期间，已经压缩图片，改变了图片数据了。
现在希望保存回原先印象笔记中帖子中的附件中。
像是：
* updateNote
* updateResource
去看看
Function: NoteStore.updateResource i32 updateResource(string authenticationToken, Types.Resource resource) throws Errors.EDAMUserException, Errors.EDAMSystemException, Errors.EDAMNotFoundException Submit a set of changes to a resource to the service. This can be used to update the meta-data about the resource, but cannot be used to change the binary contents of the resource (including the length and hash). These cannot be changed directly without creating a new resource and removing the old one via updateNote. @param resource A Resource object containing the desired fields to be populated on the service. The service will attempt to update the resource with the following fields from the client: * guid: must be provided to identify the resource * mime * width * height * duration * attributes: optional. if present, the set of attributes will be replaced. @return The Update Sequence Number of the resource after the changes have been applied. @throws EDAMUserException * BAD_DATA_FORMAT "Resource.guid" - if the parameter is missing * BAD_DATA_FORMAT "Resource.mime" - invalid resource MIME type * BAD_DATA_FORMAT "ResourceAttributes.*" - bad resource string * LIMIT_REACHED "ResourceAttribute.*" - attribute string too long * PERMISSION_DENIED "Resource" - private resource, user doesn't own @throws EDAMNotFoundException * "Resource.guid" - not found, by GUID
即：无法更新resource的二进制数据
只能是，删除旧的，新建一个，再去更新guid？
搜：create
没找到 create resource相关函数
evernote create resource api
“DocsResources GET AN API KEY evernote.com
Resources
Dealing with note attachments
Overview
Resources represent files that are embedded within a note. Common resource types include images, audio clips, PDFs, and documents, but any type of file can be stored in a Resouce.
* Creating resources
* Resource types
* Downloading resources
Creating resources
You’ll notice that there’s no NoteStore.createResource API call. This is because Resources don’t exist outside of the context of a specific note. Instead, Resources are created implicitly when you include a new Resource object in a note as part of a call to NoteStore.createNote or NoteStore.updateNote. “
清楚了：去调用NoteStore.createNote去更新resource
Struct: Resource
此处没有创建资源，那怎么创建 新建 对象 实例
注意到调试期间，看到每个资源是：
Resource(guid='33a6d058-58fa-410c-acfb-d163a973a7bb', noteGuid='9bf6cecf-d91e-4391-a034-199c744424db', data=Data(bodyHash=b'\xdc5]\xa00\xca\xfe\x97m\x81n\x99\xa3+oQ', size=1284627, body=b'\xff\xd8\xff\xe1P:Exif\x00\x00MM\x00*\x00\x00\x00\x08\x00\r\x01\x00\x00\x03\x00\x00\x00\x01\x0f\xa0\x..........................2?\xff\xd9'), mime='image/jpeg', width=4000, height=3000, duration=None, active=True, recognition=None, attributes=ResourceAttributes(sourceURL=None, timestamp=1583759247000, latitude=None, longitude=None, altitude=None, cameraMake='MI 9', cameraModel=None, clientWillIndex=None, recoType=None, fileName='IMG_20200309_130727.jpg', attachment=False, applicationData=None), updateSequenceNum=4555832, alternateData=None)
即：内部是有个Resource的对象的
去看看代码
搜：
Resource(
看到了：
/Users/crifan/dev/dev_root/python/EvernoteToWordpress/EvernoteToWordpress/libs/evernote-sdk-python3/lib/evernote/edam/type/ttypes.py
class Resource(object): """ Every media file that is embedded or attached to a note is represented through a Resource entry. <dl> <dt>guid</dt> ...
libs/evernote-sdk-python3/sample/client/EDAMTest.py
data = Types.Data() data.size = len(image) data.bodyHash = hash data.body = image resource = Types.Resource() resource.mime = 'image/png' resource.data = data
就是这么创建的。
所以去试试
调试期间，也是可以看到部分原图中是有属性attributes值的：
期间需要：
【已解决】Python中如何从md5的digest的二进制值计算出hexdigest的字符串值
所以只能：自己从原始二进制数据，从新计算出hexdigest的字符串
后来解决了，再去优化为：
# method 1: calc again curResBytes = curRes.data.body curHashStr1 = utils.calcMd5(curResBytes) # 'dc355da030cafe976d816e99a32b6f51' # method 2: convert from body hash bytes curHashStr = utils.bytesToStr(curRes.data.bodyHash)
调试看到，部分原先图片，还带宽度（和）或高度属性的：
<div> <en-media hash="b017fc1775dabb56603adc9cbe207765" type="image/jpeg" width="1080" /> </div>
要注意，替换新资源图片时，要保留。
此处已经可以：
压缩图片，然后把压缩后图片的资源列表，更新到note中了
接着去考虑，如何上传，更新到印象笔记的note 即post中去：
【已解决】Python中如何更新印象笔记的note即post帖子的内容和资源列表
不过，关于图片等细节有待优化，就是后续的事情了。
【总结】
此处最终用代码：
/Users/crifan/dev/dev_root/python/EvernoteToWordpress/EvernoteToWordpress/libs/crifan/utils.py
from hashlib import md5 # only for python 3.x
import binascii
ImageFormatToMime = {
"BMP": "image/bmp",
"PNG": "image/png",
"JPEG": "image/jpeg",
"TIFF": "image/tiff",
}
def bytesToStr(inputBytes, encoding="UTF-8"):
"""convert binary bytes into str hexadecimal representation
Args:
inputBytes (bytes): bytes
Returns:
str
Examples:
input: b'\xdc5]\xa00\xca\xfe\x97m\x81n\x99\xa3+oQ'
return: 'dc355da030cafe976d816e99a32b6f51'
Raises:
"""
inputHex = binascii.hexlify(inputBytes) # b'dc355da030cafe976d816e99a32b6f51'
inputStr = inputHex.decode(encoding) # 'dc355da030cafe976d816e99a32b6f51'
return inputStr
def calcMd5(inputContent, isRespBytes=False) :
"""generate md5 string from input content
Args:
inputContent (str/bytes): input content of string or bytes
isRespBytes (bool): return bytes, otherwise return string
Returns:
md5 checksum
str:
eg: '3110e1e7994dc119ff92439c5758e465'
bytes:
eg: b'1\x10\xe1\xe7\x99M\xc1\x19\xff\x92C\x9cWX\xe4e'
Raises:
"""
md5Value = ""
curMd5 = md5()
inputBytes = ""
if isinstance(inputContent, bytes):
inputBytes = inputContent
elif isinstance(inputContent, str):
inputBytes = bytes(strToMd5, "UTF-8")
curMd5.update(inputBytes)
if isRespBytes:
md5Value = curMd5.digest()
else:
md5Value = curMd5.hexdigest()
return md5Value/Users/crifan/dev/dev_root/python/EvernoteToWordpress/EvernoteToWordpress/EvernoteToWordpress.py
def updateNoteResouces(curNoteDetail, newResList):
"""Update note resources with new resource
Args:
curNoteDetail (Note): Evernote note with details
Returns:
updated note detail
Raises:
"""
originResList = curNoteDetail.resources
originContent = curNoteDetail.content
soup = BeautifulSoup(originContent, 'html.parser')
for curIdx, curRes in enumerate(originResList):
curMime = curRes.mime
# # method 1: calc again
# curResBytes = curRes.data.body
# curHashStr1 = utils.calcMd5(curResBytes) # 'dc355da030cafe976d816e99a32b6f51'
# method 2: convert from body hash bytes
curHashStr = utils.bytesToStr(curRes.data.bodyHash)
# imgeTypeP = re.compile("image/\w+")
foundMediaNode = soup.find("en-media", attrs={"type": curMime, "hash": curHashStr})
if foundMediaNode:
newRes = newResList[curIdx]
newMime = newRes.mime
# newHashBytes = newRes.data.bodyHash # b'\xb8\xe8\xbb\xcc\xca\xc1\xdf&J\xbeV\xe2`\xa6K\xb7'
newResBytes = newRes.data.body
newHashStr = utils.calcMd5(newResBytes)
foundMediaNode["type"] = newMime
foundMediaNode["hash"] = newHashStr
else:
logging.warning("Not found resource: type=%s, hash=%s", curMime, curHashStr)
# newContent = soup.prettify()
newContent = str(soup)
curNoteDetail.content = newContent
curNoteDetail.resources = newResList
return curNoteDetail
def isImageResource(curRes):
"""check is image media or not
Args:
curMedia (Resource): Evernote Resouce instance
Returns:
bool
Raises:
"""
isImage = False
curResMime = curRes.mime # 'image/png' 'image/jpeg'
# libs/evernote-sdk-python3/lib/evernote/edam/limits/constants.py
matchImage = re.match("^image/", curResMime)
logging.debug("matchImage=%s", matchImage)
if matchImage:
"""
image/gif
image/jpeg
image/png
"""
isImage = True
logging.info("curResMime=%s -> isImage=%s", curResMime, isImage)
return isImage
def resizePostImage(curNoteDetail):
"""Resize each media image then update post
Args:
curNoteDetail (Note): Evernote note with details
Returns:
updated note detail
Raises:
"""
newResList = []
originResList = curNoteDetail.resources
for curIdx, eachResource in enumerate(originResList):
if isImageResource(eachResource):
imgFilename = eachResource.attributes.fileName
logging.info("[%d] imgFilename=%s", curIdx, imgFilename)
resBytes = eachResource.data.body
resizedImgBytes, imgFormat = utils.resizeSingleImage(resBytes)
reizedImgLen = len(resizedImgBytes) # 77935
resizedImgMd5Bytes = utils.calcMd5(resizedImgBytes, isRespBytes=True) # '3110e1e7994dc119ff92439c5758e465'
newMime = utils.ImageFormatToMime[imgFormat] # 'image/jpeg'
newData = Types.Data()
# newData = ttypes.Data()
newData.size = reizedImgLen
newData.bodyHash = resizedImgMd5Bytes
newData.body = resizedImgBytes
newRes = Types.Resource()
# newRes = ttypes.Resource()
newRes.mime = newMime
newRes.data = newData
newRes.attributes = eachResource.attributes
newResList.append(newRes)
else:
"""
audio/wav
audio/mpeg
audio/amr
application/pdf
...
"""
newResList.append(eachResource)
curNoteDetail = updateNoteResouces(curNoteDetail, newResList)
# upload/sync to evernote
newNote = Types.Note()
newNote.title = curNoteDetail.title
newNote.guid = curNoteDetail.guid
# updated following
newNote.content = curNoteDetail.content
newNote.resources = curNoteDetail.resources
updatedNote = gNoteStore.updateNote(newNote)
# return curNoteDetail
return updatedNote实现了：
图片的压缩：
20200310 10:25:05 EvernoteToWordpress.py:317 INFO curResMime=image/jpeg -> isImage=True 20200310 10:25:05 EvernoteToWordpress.py:334 INFO [0] imgFilename=IMG_20200309_130727.jpg -> Compress ratio=7%, from [fmt=JPEG, size=(4000, 3000), len=987.7KB] to [fmt=JPEG, size=(1024, 768), len=76.1KB] -> Compress ratio=89%, from [fmt=JPEG, size=(4000, 3000), len=987.7KB] to [fmt=PNG, size=(1024, 768), len=886.1KB] 20200310 10:25:08 EvernoteToWordpress.py:317 INFO curResMime=image/jpeg -> isImage=True 20200310 10:25:08 EvernoteToWordpress.py:334 INFO [1] imgFilename=1583732707632.jpg -> Compress ratio=100%, from [fmt=JPEG, size=(978, 366), len=59.1KB] to [fmt=JPEG, size=(978, 366), len=59.1KB] -> Compress ratio=860%, from [fmt=JPEG, size=(978, 366), len=59.1KB] to [fmt=PNG, size=(978, 366), len=508.8KB] 20200310 10:25:08 EvernoteToWordpress.py:317 INFO curResMime=image/png -> isImage=True 20200310 10:25:08 EvernoteToWordpress.py:334 INFO [2] imgFilename=None -> Compress ratio=100%, from [fmt=PNG, size=(988, 596), len=568.8KB] to [fmt=PNG, size=(988, 596), len=568.8KB] -> Compress ratio=10%, from [fmt=PNG, size=(988, 596), len=568.8KB] to [fmt=JPEG, size=(988, 596), len=57.7KB] 20200310 10:25:10 EvernoteToWordpress.py:317 INFO curResMime=image/jpeg -> isImage=True 20200310 10:25:10 EvernoteToWordpress.py:334 INFO [3] imgFilename=Screenshot_2020-03-09-12-57-10-382_com.android.mms -> Compress ratio=17%, from [fmt=JPEG, size=(1080, 2340), len=93.9KB] to [fmt=JPEG, size=(360, 780), len=16.2KB] -> Compress ratio=42%, from [fmt=JPEG, size=(1080, 2340), len=93.9KB] to [fmt=PNG, size=(360, 780), len=39.8KB]
以及把更新后的图片资源列表的type和hash值也更新到content中。
最后再上传更新到印象笔记的note=post=帖子中。
【后记】
再去更新代码逻辑
关于图片media的width，再缩小图片后，有些width等属性就不需要了。所以需要去掉：
noteAttrs = foundMediaNode.attrs hasWidthAttr = "width" in noteAttrs hasHeightAttr = "height" in noteAttrs if hasWidthAttr or hasHeightAttr: newImg = utils.bytesToImage(newResBytes) # newImgWidth = newImg.width # newImgHeight = newImg.height newImgWidth, newImgHeight = newImg.size if hasWidthAttr: curWidth = int(noteAttrs["width"]) if curWidth >= newImgWidth: del foundMediaNode["width"] if hasHeightAttr: curHeight = int(noteAttrs["height"]) if curHeight >= newImgHeight: del foundMediaNode["height"]
效果：
更新后的图片的width没了，图片就显示原始大小了：
再继续去添加其他逻辑。
转载请注明：在路上 » 【已解决】Python中更新印象笔记中帖子中附件图片的数据