mitmproxy 几个小demo

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发布于 2026-06-17 17:54:33

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mitmproxy 的拦截与修改功能是其核心价值，能够实时干预 HTTP/HTTPS 流量，常用于接口调试、爬虫数据抓取、测试验证等场景。其核心优势在于命令行交互（mitmproxy）、图形化界面（mitmweb） 和脚本化扩展（mitmdump）

安装

pip install mitmproxy

然后需要安装下ca证书

写几个案例

http-modify-form

"""Modify an HTTP form submission."""

from mitmproxy import http


def request(flow: http.HTTPFlow) -> None:
    if flow.request.urlencoded_form:
        # If there's already a form, one can just add items to the dict:
        flow.request.urlencoded_form["mitmproxy"] = "rocks"
    else:
        # One can also just pass new form data.
        # This sets the proper content type and overrides the body.
        flow.request.urlencoded_form = [("foo", "bar")]  # type: ignore[assignment]

http-modify-query-string

"""Modify HTTP query parameters."""

from mitmproxy import http


def request(flow: http.HTTPFlow) -> None:
    flow.request.query["mitmproxy"] = "rocks"

filter-flows

"""
Use mitmproxy's filter pattern in scripts.
"""

from __future__ import annotations

import logging

from mitmproxy import flowfilter
from mitmproxy import http
from mitmproxy.addonmanager import Loader


classFilter:
    filter: flowfilter.TFilter

    defconfigure(self, updated):
        if"flowfilter"in updated:
            self.filter = flowfilter.parse(".")

    defload(self, loader: Loader):
        loader.add_option("flowfilter", str, "", "Check that flow matches filter.")

    defresponse(self, flow: http.HTTPFlow) -> None:
        if flowfilter.match(self.filter, flow):
            logging.info("Flow matches filter:")
            logging.info(flow)


addons = [Filter()]

mock data

from mitmproxy import http

defresponse(flow: http.HTTPFlow) -> None:
    # 拦截条件：匹配商品详情接口
    if"/api/goods/detail"in flow.request.pretty_url:
        # 构造 Mock 响应
        mock_response = {
            "code": 200,
            "msg": "success",
            "data": {"id": 1, "name": "拦截后修改的商品", "price": 0}
        }
        # 替换响应内容
        flow.response.text = str(mock_response).replace("'", '"')  # 转为 JSON 字符串
        flow.response.status_code = 200# 修改状态码
        print(f"已替换响应：{flow.request.pretty_url}")

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原始发表：2025-08-26，如有侵权请联系 cloudcommunity@tencent.com 删除

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