Postman、Python 以及将图像和元数据传递给 Web 服务

2022-01-22 00:00:00 python flask-restful postman

问题描述

这是一个由两部分组成的问题:我看过讨论的个别部分，但似乎无法将推荐的建议一起工作.我想创建一个 Web 服务来存储从调用者传递的图像及其元数据，并从 Postman 运行测试调用以确保它正常工作.因此，要通过 Postman 将图像 (Drew16.jpg) 传递给 Web 服务，看来我需要这样的东西:

this is a two-part question: I have seen individual pieces discussed, but can't seem to get the recommended suggestions to work together. I want to create a web service to store images and their metadata passed from a caller and run a test call from Postman to make sure it is working. So to pass an image (Drew16.jpg) to the web service via Postman, it appears I need something like this:

对于网络服务，我有一些 python/flask 代码来读取请求(我尝试过的许多变体之一):

For the web service, I have some python/flask code to read the request (one of many variations I have tried):

from flask import Flask, jsonify, request, render_template
from flask_restful import Resource, Api, reqparse

...

def post(self, name):
    request_data = request.get_json()
    userId = request_data['UserId']
    type = request_data['ImageType']
    image = request.files['Image']

数据部分和直接 JSON 没有问题，但添加图像却是个麻烦.我的邮递员配置哪里出错了?从帖子中读取元数据和文件的实际 Python 命令集是什么?TIA

Had no problem with the data portion and straight JSON but adding the image has been a bugger. Where am I going wrong on my Postman config? What is the actual set of Python commands for reading the metadata and the file from the post? TIA

解决方案

请原谅几乎是博文.我发布这个是因为虽然你可以在不同的地方找到部分答案，但我还没有在任何地方看到完整的帖子，这可以节省我大量的时间.问题是你需要故事的双方来验证.

Pardon the almost blog post. I am posting this because while you can find partial answers in various places, I haven't run across a complete post anywhere, which would have saved me a ton of time. The problem is you need both sides to the story in order to verify either.

所以我想使用 Postman 向 Python/Flask Web 服务发送请求.它必须有图像和一些元数据.

So I want to send a request using Postman to a Python/Flask web service. It has to have an image along with some metadata.

这里是 Postman 的设置(URL、标题):

Here are the settings for Postman (URL, Headers):

和身体:

现在转到网络服务.这是一个简单的服务，它将接受请求、打印元数据并保存文件:

Now on to the web service. Here is a bare bones service which will take the request, print the metadata and save the file:

from flask import Flask, request

app = Flask(__name__)        

# POST - just get the image and metadata
@app.route('/RequestImageWithMetadata', methods=['POST'])
def post():
    request_data = request.form['some_text']
    print(request_data)
    imagefile = request.files.get('imagefile', '')
    imagefile.save('D:/temp/test_image.jpg')
    return "OK", 200

app.run(port=5000)

享受吧！

相关文章