NodeJS实现：将含HTML的JSON响应转换为PDF文件

Got it, let's walk through how to pull that API data and turn the name/description fields into a PDF. Here's a step-by-step breakdown with code examples you can adapt:

1. 发送GET请求获取JSON数据 #

First, we'll fetch the data from your local endpoint. Using Python's requests library makes this straightforward:

import requests

# 发送GET请求并解析JSON
response = requests.get('http://localhost:4000/features')
features_data = response.json()

This will give you the array of feature objects you shared in your example.

2. 处理带HTML标签的description字段 #

The description field has HTML markup (like <p> or <strong>). You have two options here: extract plain text, or keep the formatting for the PDF.

提取纯文本 #

Use BeautifulSoup to strip out HTML tags and get clean text:

from bs4 import BeautifulSoup

for feature in features_data:
    # 保留name字段
    feature_name = feature['name']
    # 解析HTML并提取纯文本
    soup = BeautifulSoup(feature['description'], 'html.parser')
    clean_description = soup.get_text(strip=True)

保留HTML格式 #

If you want to keep the bold text and paragraph structure, you can reuse the raw HTML directly in your PDF generation (we'll cover this in the next step).

3. 生成PDF文档 #

Here are two reliable methods to create the PDF, depending on whether you want plain text or styled content:

方法1：用ReportLab生成纯文本PDF #

Great for simple, custom layouts:

from reportlab.pdfgen import canvas
from reportlab.lib.pagesizes import letter
from bs4 import BeautifulSoup

# 初始化PDF画布
pdf = canvas.Canvas('features.pdf', pagesize=letter)
page_width, page_height = letter
y_pos = page_height - 50  # 起始位置

# 设置字体
pdf.setFont("Helvetica-Bold", 14)

for idx, feature in enumerate(features_data):
    # 写入feature名称
    pdf.drawString(50, y_pos, feature['name'])
    y_pos -= 20
    
    # 写入纯文本描述
    pdf.setFont("Helvetica", 12)
    soup = BeautifulSoup(feature['description'], 'html.parser')
    clean_desc = soup.get_text(strip=True)
    
    # 处理长文本换行
    text_box = pdf.beginText(50, y_pos)
    text_box.textLines(clean_desc)
    pdf.drawText(text_box)
    
    # 预留间距，自动换页
    y_pos -= 100
    if y_pos < 50:
        pdf.showPage()
        pdf.setFont("Helvetica-Bold", 14)
        y_pos = page_height - 50

# 保存PDF
pdf.save()

方法2：用WeasyPrint生成带样式的PDF #

Perfect if you want to retain the original HTML formatting (like bold text):

import weasyprint

# 构建完整的HTML内容
html_template = "<html><body style='margin: 2rem;'>"
for feature in features_data:
    html_template += f"<h2 style='color: #2c3e50;'>{feature['name']}</h2>"
    html_template += feature['description']  # 直接插入原始HTML
html_template += "</body></html>"

# 生成带样式的PDF
weasyprint.HTML(string=html_template).write_pdf('features_styled.pdf')

额外注意事项 #

• Install required dependencies first: pip install requests beautifulsoup4 reportlab weasyprint
• WeasyPrint may need system-level dependencies (like libpango) depending on your OS—check the library docs for setup details
• Adjust fonts, spacing, or page sizes in the code to match your desired output

内容的提问来源于stack exchange，提问作者Lars Suffys