Python中如何实现B2B自动发帖功能？

要实现B2B自动发帖，核心是模拟浏览器操作或调用网站API。这里提供两种主流方法：

1. 使用Selenium模拟浏览器操作（适用于无API的网站）

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
import time

driver = webdriver.Chrome()
driver.get("目标网站登录页")

# 登录
driver.find_element(By.ID, "username").send_keys("你的账号")
driver.find_element(By.ID, "password").send_keys("你的密码")
driver.find_element(By.XPATH, "//button[@type='submit']").click()

# 等待跳转并进入发帖页
WebDriverWait(driver, 10).until(
    EC.presence_of_element_located((By.LINK_TEXT, "发布"))
).click()

# 填写表单
WebDriverWait(driver, 10).until(
    EC.presence_of_element_located((By.ID, "title"))
).send_keys("帖子标题")

driver.find_element(By.ID, "content").send_keys("帖子内容")
driver.find_element(By.ID, "submit").click()

time.sleep(3)
driver.quit()

2. 调用API接口（最稳定高效的方式）

import requests
import json

# 1. 获取认证token
auth_url = "https://api.example.com/auth"
auth_data = {"username": "your_user", "password": "your_pass"}
token_response = requests.post(auth_url, json=auth_data).json()
access_token = token_response["access_token"]

# 2. 构造发帖请求
headers = {"Authorization": f"Bearer {access_token}", "Content-Type": "application/json"}
post_url = "https://api.example.com/posts"
post_data = {
    "title": "产品推广",
    "content": "详细产品描述...",
    "category": "B2B",
    "tags": ["批发", "供应商"]
}

response = requests.post(post_url, headers=headers, json=post_data)
print(f"发帖结果: {response.status_code}")
print(response.json())

关键点：

• 优先查找目标网站是否有官方API
• 无API时用Selenium，但要注意反爬机制
• 涉及验证码时需要额外处理（如第三方打码平台）
• 遵守网站robots.txt规定

总结：先查API文档，没有再用Selenium模拟。