测试接口时，网上半天找不到大图，危急之际，只能用python生成一个了

from PIL import Image, ImageDraw
import os
import random

def create_large_image(target_size_mb=20):
    target_bytes = target_size_mb * 1024 * 1024  # Convert MB to bytes
    width = 20000  # Start with a very large width
    height = 20000  # Start with a very large height
    temp_file = 'E:\\temp_image.png'  # Specify a complete file path

    img = Image.new('RGB', (width, height), color='white')
    draw = ImageDraw.Draw(img)
    
    # Add complex patterns to avoid all-zero compression
    for i in range(0, width, 10):
        draw.line((i, 0, i, height), fill=(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)))
    for j in range(0, height, 10):
        draw.line((0, j, width, j), fill=(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)))
    
    # Add random noise to the image
    for x in range(0, width, 50):
        for y in range(0, height, 50):
            draw.ellipse((x, y, x+10, y+10), fill=(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)))
    
    img.save(temp_file, format="PNG")
    
    # Check the size of the generated image
    generated_size = os.path.getsize(temp_file)
    print(f"Generated image size: {generated_size / (1024 * 1024):.2f} MB")
    
    if generated_size < target_bytes:
        print("The generated image is smaller than the target size.")
    else:
        print("The generated image meets the target size requirement.")
        img.save('output_large_image.png', format="PNG")
        os.remove(temp_file)  # Final cleanup

create_large_image()

 放心食用，哈哈哈哈