[python]http傳輸圖片

服務端：

#coding:utf-8
from flask import request, Flask
import time
import os
from PIL import Image
from io import StringIO
import matplotlib.pyplot as plt
import cv2
import numpy as np
from io import BytesIO
import json
import base64

app = Flask(__name__)

@app.route("/", methods=['POST'])
def get_frame():
    start_time = time.time()
    upload_file = request.get_data()
    req = json.loads(upload_file)
    #old_file_name = upload_file.filename
    
    if upload_file:
        name = req['name']
        print(name)
        img_str = req['image'] #得到unicode的字符串
        img_decode_ = img_str.encode('ascii') #從unicode變成ascii編碼
        img_decode = base64.b64decode(img_decode_) #解base64編碼，得圖片的二進制
        img_np_ = np.frombuffer(img_decode, np.uint8)
        img = cv2.imdecode(img_np_, cv2.COLOR_RGB2BGR) #轉爲opencv格式
        cv2.imshow('frame', img)
        
        cv2.waitKey()
        return 'success'
    else:
        return 'failed'


if __name__ == "__main__":
    app.run("127.0.0.1", port=6060)

客戶端：

#coding:utf-8
import requests
import json
import numpy as np
import cv2
import base64
import matplotlib.pyplot as plt
from PIL import Image

def getByte(path):
    with open(path, 'rb') as f:
        img_byte = base64.b64encode(f.read()) #二進制讀取後變base64編碼
    img_str = img_byte.decode('ascii') #轉成python的unicode
    return img_str 
    
img_str = getByte('zyc_0.jpg')

requestsss={'name':'張山', 'image':img_str}
req = json.dumps(requestsss) #字典數據結構變json(所有程序語言都認識的字符串)

res=requests.post('http://127.0.0.1:6060/', data=req)
print(res.text)