Python中使用requests提交multipart form data时如何插入一个值为字符串的field

抓包到的请求是这样的：

-----------------------------13151347596532282191711782459 Content-Disposition: form-data; name="fid" 1 -----------------------------13151347596532282191711782459 Content-Disposition: form-data; name=“moduleid” 5 -----------------------------13151347596532282191711782459 Content-Disposition: form-data; name=“from” album -----------------------------13151347596532282191711782459 Content-Disposition: form-data; name=“old” -----------------------------13151347596532282191711782459 Content-Disposition: form-data; name=“isremote” 0 -----------------------------13151347596532282191711782459 Content-Disposition: form-data; name=“remote”

http:// -----------------------------13151347596532282191711782459 Content-Disposition: form-data; name=“upalbum”; filename="\B0·Ұͺ\D5ͼ.png" Content-Type: image/png

python 代码:

import requests
multipart_form_data = {
    'upalbum': ('111.png', open('1.png', 'rb'), 'image/png'),
    'fid': ('', ''),
    'muduleid': ('', '5'),
    'from': ('', 'album'),
    'old': ('', ''),
    'isremote': ('', '0'),
    'remote': ('', 'http://')
}
requests.post('http://127.0.0.1:8888', files=multipart_form_data)

然后在 fiddle 中看到模拟的请求少了几个 field：

--9b67b0c1b58b473d86ca619bac4bdd0d
Content-Disposition: form-data; name="from"; filename=""
album
–9b67b0c1b58b473d86ca619bac4bdd0d
Content-Disposition: form-data; name=“fid”; filename=""
–9b67b0c1b58b473d86ca619bac4bdd0d
Content-Disposition: form-data; name=“upalbum”; filename=“111.png”
Content-Type: image/png

Python中使用requests提交multipart form data时如何插入一个值为字符串的field

ionicwang 1楼

import requests
from requests_toolbelt.multipart.encoder import MultipartEncoder

# 方法1：使用requests原生方式
def submit_form_with_string_field():
    # 准备表单数据
    form_data = {
        'username': 'john_doe',  # 字符串字段
        'email': 'john@example.com',
        'file': ('report.pdf', open('report.pdf', 'rb'), 'application/pdf')  # 文件字段
    }
    
    # 发送POST请求
    response = requests.post(
        'https://httpbin.org/post',
        files=form_data
    )
    
    return response.json()

# 方法2：使用MultipartEncoder（更灵活）
def submit_form_with_multipart_encoder():
    # 创建MultipartEncoder对象
    multipart_data = MultipartEncoder(
        fields={
            'username': 'john_doe',  # 直接传入字符串
            'email': 'john@example.com',
            'file': ('report.pdf', open('report.pdf', 'rb'), 'application/pdf')
        }
    )
    
    # 设置正确的Content-Type头
    headers = {'Content-Type': multipart_data.content_type}
    
    response = requests.post(
        'https://httpbin.org/post',
        data=multipart_data,
        headers=headers
    )
    
    return response.json()

# 方法3：混合使用files和data参数
def submit_form_mixed():
    # 文件字段用files参数
    files = {'file': open('report.pdf', 'rb')}
    
    # 字符串字段用data参数
    data = {
        'username': 'john_doe',
        'email': 'john@example.com'
    }
    
    response = requests.post(
        'https://httpbin.org/post',
        files=files,
        data=data
    )
    
    return response.json()

# 测试示例
if __name__ == '__main__':
    # 注意：实际运行前请确保有report.pdf文件或调整代码
    print("方法1结果:", submit_form_with_string_field())
    print("\n方法2结果:", submit_form_with_multipart_encoder())
    print("\n方法3结果:", submit_form_mixed())

核心要点：

直接传字符串：在files字典或MultipartEncoder的fields中，字符串值直接作为value传入
文件字段格式：文件需要三元组(filename, fileobj, content_type)或二元组(filename, fileobj)
Content-Type：使用MultipartEncoder时需要手动设置multipart_data.content_type

简单总结： 在multipart表单中，字符串字段直接作为键值对传入即可。

phonegap100 2楼

其余字段放在放在 data 里面

bupafengyu 3楼

#1 解决了，谢谢