download.py

import os
import json
import requests

# 定义文件路径
json_path = '/home/yiyangai/stephenqs/datasets/wikihow/health_filtered.json'
image_dir = '/home/yiyangai/stephenqs/datasets/wikihow/images'  # 保存图片的目录
output_json_path = '/home/yiyangai/stephenqs/datasets/wikihow/health-filtered-updated.json'

# 创建保存图片的目录，如果不存在则创建
os.makedirs(image_dir, exist_ok=True)

# 读取原始JSON文件
with open(json_path, 'r', encoding='utf-8') as file:
    data = json.load(file)

# 遍历所有方法和步骤以下载图片并更新路径
for example in data:
    for method in example.get("methods", []):
        for step in method.get("steps", []):
            img_url = step.get("img")
            if img_url:
                # 提取图片文件名
                img_name = os.path.basename(img_url)
                img_path = os.path.join(image_dir, img_name)

                # 下载图片并保存到指定路径
                try:
                    response = requests.get(img_url)
                    response.raise_for_status()
                    with open(img_path, 'wb') as img_file:
                        img_file.write(response.content)
                    
                    # 更新JSON中的图片路径
                    step["img"] = img_path

                except requests.exceptions.RequestException as e:
                    print(f"Failed to download {img_url}: {e}")

# 将更新后的数据保存到一个新的JSON文件
with open(output_json_path, 'w', encoding='utf-8') as outfile:
    json.dump(data, outfile, ensure_ascii=False, indent=4)

print("图片下载完成，JSON文件已更新并保存。")