Python3实现自动翻译并生成PDF-DEMO
2024/01/02 15:27 投稿

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目录架构

    • —templates
      • ——index.html
    • —app.py

app.py:

from flask import Flask, render_template, request, send_file
from reportlab.pdfgen import canvas
from io import BytesIO
from googletrans import Translator
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFont

app = Flask(__name__)

translator = Translator()

@app.route('/')
def index():
    return render_template('index.html')

@app.route('/generate_pdf', methods=['POST'])
def generate_pdf():
    content = request.form['content']

    # 翻译中文内容为日语
    translated_content = translate_to_japanese(content)

    # 使用reportlab创建PDF
    pdf_bytes = generate_pdf_reportlab(translated_content)

    # 将生成的PDF文件发送给用户下载
    return send_file(
        BytesIO(pdf_bytes),
        as_attachment=True,
        download_name='output.pdf',
        mimetype='application/pdf'
    )

def translate_to_japanese(text):
    # 使用googletrans进行翻译
    translation = translator.translate(text, src='zh-cn', dest='ja')
    return translation.text

def generate_pdf_reportlab(content):
    # 创建一个PDF文件并添加内容
    pdf_buffer = BytesIO()
    
    # 指定中文字体文件路径,这里假设你有一个中文字体的ttf文件,比如SimSun.ttf
    chinese_font_path = 'HarmonyOS_Sans_SC_Medium.ttf'

    # 注册中文字体
    pdfmetrics.registerFont(TTFont('HarmonyOS_Sans_SC_Medium', chinese_font_path))
    
    pdf = canvas.Canvas(pdf_buffer)

    # 设置字体
    pdf.setFont('HarmonyOS_Sans_SC_Medium', 12)

    # 设置每行的最大字符数
    max_chars_per_line = 30

    # 添加内容,自动换行
    lines = [content[i:i+max_chars_per_line] for i in range(0, len(content), max_chars_per_line)]
    y_position = 800
    for line in lines:
        pdf.drawString(100, y_position, line)
        y_position -= 12  # Adjust this value based on your line height

    pdf.save()

    # 获取PDF内容的字节表示
    pdf_bytes = pdf_buffer.getvalue()
    pdf_buffer.close()

    return pdf_bytes


if __name__ == '__main__':
    app.run(debug=True)

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>PDF Generator</title>
</head>
<body>
    <form action="/generate_pdf" method="post">
        <label for="content">输入内容:</label>
        <textarea name="content" id="content" rows="10" cols="30"></textarea>
        <br>
        <input type="submit" value="生成PDF">
    </form>
</body>
</html>

效果:

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