在没有浏览器的情况下保存HAR文件

curl -v -o /dev/null -s -w '%{time_total}\n' http://example.com | jq -R . > har.log

import requests
import json

url = 'http://example.com'
headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3'}

response = requests.get(url, headers=headers)

har_entry = {
    "startedDateTime": response.elapsed.total_seconds(),
    "request": {
        "method": "GET",
        "url": url,
        "headers": [{"name": k, "value": v} for k, v in headers.items()],
        "queryString": [],
        "cookies": [],
        "headersSize": len(str(headers)),
        "bodySize": 0
    },
    "response": {
        "status": response.status_code,
        "statusText": response.reason,
        "headers": [{"name": k, "value": v} for k, v in response.headers.items()],
        "cookies": [],
        "content": {
            "size": len(response.content),
            "mimeType": response.headers['Content-Type'],
            "text": response.text
        },
        "headersSize": len(str(response.headers)),
        "redirectURL": ""
    },
    "timings": {
        "blocked": 0,
        "dns": 0,
        "connect": 0,
        "send": 0,
        "wait": response.elapsed.total_seconds(),
        "receive": 0
    },
    "time": response.elapsed.total_seconds()
}

har_log = {
    "log": {
        "version": "1.2",
        "creator": {
            "name": "Python requests",
            "version": "2.25.1"
        },
        "entries": [har_entry]
    }
}

with open('har.log', 'w') as f:
    json.dump(har_log, f)