百度翻译API工程

deploy/baidu-translate/Dockerfile

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+# 使用官方 Python 3.8.2 slim 镜像（精简版）
+FROM python:3.8.2-slim
+
+# 设置工作目录
+WORKDIR /app
+
+# 安装依赖前先复制 requirements（利用 Docker 缓存）
+COPY requirements.txt .
+
+# 升级 pip 并安装依赖（使用国内源加速，可选）
+RUN pip install --no-cache-dir --upgrade pip \
+    && pip install --no-cache-dir -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple/
+
+# 复制应用代码
+COPY . .
+
+# 暴露端口
+EXPOSE 5000
+
+# 启动命令（使用 gunicorn 提升生产性能）
+CMD ["gunicorn", "--bind", "0.0.0.0:5000", "--workers", "2", "--timeout", "60", "main:app"]

deploy/baidu-translate/main.py

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+# main.py
+
+from flask import Flask, request, jsonify
+from translate import translate_text
+
+app = Flask(__name__)
+
+
+@app.route('/translate', methods=['POST'])
+def translate_api():
+    """
+    多语言翻译接口
+    请求体示例:
+    {
+        "text": "Hello world",
+        "source_lang": "en",   // 可选，默认 auto
+        "target_lang": "zh"    // 可选，默认 zh
+    }
+    """
+    data = request.get_json()
+    if not data or 'text' not in data:
+        return jsonify({"error": "缺少参数 'text'"}), 400
+
+    text = data['text']
+    source_lang = data.get('source_lang', 'auto')
+    target_lang = data.get('target_lang', 'zh')
+
+    result = translate_text(text, source_lang, target_lang)
+
+    if result['success']:
+        return jsonify({
+            "translated_text": result['translated_text'],
+            "source_lang": source_lang,
+            "target_lang": target_lang
+        })
+    else:
+        return jsonify({"error": result['error']}), 400
+
+
+@app.route('/health', methods=['GET'])
+def health_check():
+    return jsonify({"status": "ok", "service": "baidu-translate"})
+
+
+@app.route('/', methods=['GET'])
+def index():
+    return jsonify({
+        "message": "Baidu Translate API Service",
+        "endpoints": {
+            "translate": "POST /translate",
+            "health": "GET /health"
+        }
+    })
+
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=5000, debug=False)

deploy/baidu-translate/requirements.txt

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+Flask==2.3.3
+requests==2.31.0
+gunicorn==21.2.0

deploy/baidu-translate/run.sh

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+#!/bin/bash
+
+# 构建镜像
+echo "正在构建 Docker 镜像..."
+docker build -t baidu-translate-api:latest .
+
+# 停止并删除旧容器（如果存在）
+if [ "$(docker ps -q -f name=baidu-translate)" ]; then
+    echo "停止旧容器..."
+    docker stop baidu-translate
+fi
+
+if [ "$(docker ps -aq -f status=exited -f name=baidu-translate)" ]; then
+    echo "删除旧容器..."
+    docker rm baidu-translate
+fi
+
+# 启动新容器
+echo "启动容器..."
+docker run -d \
+  --name baidu-translate \
+  -p 28081:5000 \
+  --restart unless-stopped \
+  baidu-translate-api:latest
+
+echo "服务已启动！访问 http://<服务器IP>:5000/health"

deploy/baidu-translate/settings.py

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+# settings.py
+
+# 百度翻译 API 配置
+BAIDU_APP_ID = "20200811000539778"
+BAIDU_SECRET_KEY = "uK9IyUhuEWX3PIqN75iC"
+
+TIMEOUT = 10
+MAX_TEXT_LENGTH = 100
+
+# 百度语言代码映射（ISO 639-1 → Baidu Code）
+BAIDU_LANG_MAP = {
+    'zh': 'zh',
+    'en': 'en',
+    'ko': 'kor',
+    'ja': 'jp',
+    'fr': 'fra',
+    'es': 'spa',
+    'ru': 'ru',
+    'de': 'de',
+    'pt': 'pt',
+    'it': 'it',
+    'ar': 'ara',
+    'th': 'th',
+    'vi': 'vie',
+    # 可继续扩展
+}

deploy/baidu-translate/translate.py

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+# translate.py
+
+import hashlib
+import random
+import requests
+import settings
+
+
+def iso_to_baidu_lang(iso_code: str) -> str:
+    """将 ISO 639-1 语言代码转换为百度翻译所需代码"""
+    code = settings.BAIDU_LANG_MAP.get(iso_code.lower())
+    if code is None:
+        raise ValueError(f"不支持的语言代码: {iso_code}")
+    return code
+
+
+def translate_text(text: str, source_lang: str = "auto", target_lang: str = "zh") -> dict:
+    """
+    使用百度翻译 API 进行多语言翻译
+    :param text: 原文
+    :param source_lang: 源语言 ISO 代码（如 'ko', 'en'），默认 'auto' 自动检测
+    :param target_lang: 目标语言 ISO 代码，默认 'zh'
+    :return: {'success': bool, 'translated_text': str, 'error': str (optional)}
+    """
+    if not text or not text.strip():
+        return {"success": False, "error": "输入文本为空"}
+
+    try:
+        from_lang = "auto" if source_lang == "auto" else iso_to_baidu_lang(source_lang)
+        to_lang = iso_to_baidu_lang(target_lang)
+    except ValueError as e:
+        return {"success": False, "error": str(e)}
+
+    q = text[:settings.MAX_TEXT_LENGTH]
+
+    try:
+        salt = random.randint(32768, 65536)
+        sign_str = settings.BAIDU_APP_ID + q + str(salt) + settings.BAIDU_SECRET_KEY
+        sign = hashlib.md5(sign_str.encode()).hexdigest()
+
+        payload = {
+            'q': q,
+            'from': from_lang,
+            'to': to_lang,
+            'appid': settings.BAIDU_APP_ID,
+            'salt': salt,
+            'sign': sign
+        }
+
+        response = requests.post(
+            "https://fanyi-api.baidu.com/api/trans/vip/translate",
+            data=payload,
+            timeout=settings.TIMEOUT
+        )
+        response.raise_for_status()
+        result = response.json()
+
+        if 'error_code' in result:
+            error_msg = f"百度API错误 {result.get('error_code')}: {result.get('error_msg', '')}"
+            return {"success": False, "error": error_msg}
+
+        if 'trans_result' not in result or not result['trans_result']:
+            return {"success": False, "error": "翻译结果为空"}
+
+        translated = result['trans_result'][0]['dst']
+        return {"success": True, "translated_text": translated}
+
+    except requests.exceptions.RequestException as e:
+        return {"success": False, "error": f"网络请求失败: {str(e)}"}
+    except Exception as e:
+        return {"success": False, "error": f"未知错误: {str(e)}"}