给Flask加上百度翻译功能，这样可以用中文进行搜索了

上一篇博客：Flask之手搓bootstrap翻页-CSDN博客 里，对 OMDb API - The Open Movie Database 的搜索，只能使用英文，才能搜索出电影信息，如果使用中文，是搜索不到结果的。这里就需要使用翻译，把中文电影名翻译成英文电影名。

这里使用百度翻译，百度翻译量少的话是免费的，百度翻译开放平台，而且有python的示例代码，可以直接照抄。

# -*- coding: utf-8 -*-

# This code shows an example of text translation from English to Simplified-Chinese.
# This code runs on Python 2.7.x and Python 3.x.
# You may install `requests` to run this code: pip install requests
# Please refer to `https://api.fanyi.baidu.com/doc/21` for complete api document

import requests
import random
import json
from hashlib import md5

# Set your own appid/appkey.
appid = 'INPUT_YOUR_APPID'
appkey = 'INPUT_YOUR_APPKEY'

# For list of language codes, please refer to `https://api.fanyi.baidu.com/doc/21`
from_lang = 'en'
to_lang =  'zh'

endpoint = 'http://api.fanyi.baidu.com'
path = '/api/trans/vip/translate'
url = endpoint + path

query = 'Hello World! This is 1st paragraph.\nThis is 2nd paragraph.'

# Generate salt and sign
def make_md5(s, encoding='utf-8'):
    return md5(s.encode(encoding)).hexdigest()

salt = random.randint(32768, 65536)
sign = make_md5(appid + query + str(salt) + appkey)

# Build request
headers = {'Content-Type': 'application/x-www-form-urlencoded'}
payload = {'appid': appid, 'q': query, 'from': from_lang, 'to': to_lang, 'salt': salt, 'sign': sign}

# Send request
r = requests.post(url, params=payload, headers=headers)
result = r.json()

# Show response
print(json.dumps(result, indent=4, ensure_ascii=False))

只需要在搜索路由里，将form表单传递过来的中文搜索词翻译成英文即可。如果是英文，那就让它再翻译一遍，一般是没有变化。

详细代码如下。

app.py

from flask import Flask, render_template, request
import requests
import math
import json
import random
from hashlib import md5

app = Flask(__name__)


@app.route('/', methods=["GET"])
# @app.route('/?s=<s>&page=<page>', methods=["GET"])
def main():
    s = request.args.get("s")
    page = request.args.get("page")
    if page is None:
        page = 1
    else:
        page = int(request.args.get("page"))
    if s is None:
        s = 'superman'
    # Here is your key: 4ee0241e
    # OMDb API: http://www.omdbapi.com/?i=tt3896198&apikey=4ee0241e
    # rawData = requests.get("http://www.omdbapi.com/?apikey=4ee0241e&s=batman&page=1")
    rawData = requests.get(f"http://www.omdbapi.com/?apikey=4ee0241e&s={s}&page={page}")
    movies = rawData.json()
    if movies["Response"] == "True":
        pages = math.ceil(int(movies["totalResults"]) / 10)
    else:
        pages = 0
    data = dict(
        movies=movies,
        active1="active",
        active2="",
        pages=pages,
        page=page,
        s=s,
    )
    return render_template("index.html", data=data)


@app.route('/', methods=["POST"])
def search():
    s = request.form["name"]
    en_s = fanyi(s)
    page = 1
    rawData = requests.get(f"http://www.omdbapi.com/?apikey=4ee0241e&s={en_s}&page={page}")
    movies = rawData.json()
    if movies["Response"] == "True":
        pages = math.ceil(int(movies["totalResults"]) / 10)
    else:
        pages = 0
    data = dict(
        movies=movies,
        active1="active",
        active2="",
        pages=pages,
        page=page,
        s=s,
    )
    return render_template("index.html", data=data)


def fanyi(s):
    # Set your own appid/appkey.
    appid = 'INPUT_YOUR_APPID'
    appkey = 'INPUT_YOUR_APPKEY'
    # For list of language codes, please refer to `https://api.fanyi.baidu.com/doc/21`
    from_lang = 'zh'
    to_lang = 'en'

    endpoint = 'http://api.fanyi.baidu.com'
    path = '/api/trans/vip/translate'
    url = endpoint + path

    # query = 'Hello World! This is 1st paragraph.\nThis is 2nd paragraph.'
    query = s

    # Generate salt and sign
    def make_md5(sm, encoding='utf-8'):
        return md5(sm.encode(encoding)).hexdigest()

    salt = random.randint(32768, 65536)
    sign = make_md5(appid + query + str(salt) + appkey)

    # Build request
    headers = {'Content-Type': 'application/x-www-form-urlencoded'}
    payload = {'appid': appid, 'q': query, 'from': from_lang, 'to': to_lang, 'salt': salt, 'sign': sign}

    # Send request
    r = requests.post(url, params=payload, headers=headers)
    result = r.json()

    # Show response
    # print(json.dumps(result["trans_result"][0]["dst"], indent=4, ensure_ascii=False))
    # print(json.dumps(result, indent=4, ensure_ascii=False))  # "superman"
    # print(result["trans_result"][0]["dst"])   # superman
    return result["trans_result"][0]["dst"]


@app.route('/<imdbID>')
def movie_by_title(imdbID):
    # rawData = requests.get("http://www.omdbapi.com/?apikey=4ee0241e&i={}".format(imdbID))
    rawData = requests.get(f"http://www.omdbapi.com/?apikey=4ee0241e&i={imdbID}")
    movie = rawData.json()
    data = dict(
        movie=movie,
        active1="",
        active2="active",
    )
    return render_template("movie.html", data=data)


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

footer.html

<div class="mt-3">
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js"
            integrity="sha384-C6RzsynM9kWDrMNeT87bh95OGNyZPhcTNXj1NW7RuBCsyN/o0jlpcV8Qyq46cDfL"
            crossorigin="anonymous"></script>
</div>

header.html

<meta charset="UTF-8">
<title>母版</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet"
      integrity="sha384-T3c6CoIi6uLrA9TneNEoa7RxnatzjcDSCmG1MXxSR1GAsXEV/Dwwykc2MPK8M2HN" crossorigin="anonymous">

nav.html

<div class="contain  bg-body-tertiary">
    <nav class="navbar navbar-expand-lg container">
        <div class="container-fluid">
            <a class="navbar-brand">电影</a>
            <button class="navbar-toggler" type="button" data-bs-toggle="collapse"
                    data-bs-target="#navbarSupportedContent"
                    aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
                <span class="navbar-toggler-icon"></span>
            </button>
            <div class="collapse navbar-collapse" id="navbarSupportedContent">
                <ul class="navbar-nav me-auto mb-2 mb-lg-0">
                    <li class="nav-item {{ data["active1"] }}">
                        <a class="nav-link" aria-current="page" href="/">首页</a>
                    </li>
                    <li class="nav-item {{ data["active2"] }}">
                        <a class="nav-link" href="javascript:(0)">详情</a>
                    </li>
                </ul>
                <form class="d-flex" role="search" method="post" action="{{ url_for('search') }}">
                    <input class="form-control me-2" type="search" name="name" placeholder="搜索影片" value="{{ data.s }}"
                           aria-label="Search">
                    <button class="btn btn-outline-success" type="submit">search</button>
                </form>
            </div>
        </div>
    </nav>
</div>

home.html

<!DOCTYPE html>
<html lang="en">
<head>
    {% block head %}
        {% include './common/header.html' %}
    {% endblock %}
    <style>
        .card:hover {
            box-shadow: 10px 5px 5px #ccc;
        }

        .active {
            background: rgb(208, 216, 222);
        }

        .navbar {
            --bs-navbar-padding-y: 0;
        }

        .nav-link {
            padding: 20px;
        }

        .row > * {
            padding-left: 0;
        }
    </style>
</head>
<body>
{% block nav %}
    {% include './common/nav.html' %}
{% endblock %}
<div class="container mt-3">
    <div class="row">
        {% block content %}
        {% endblock %}
    </div>
</div>
{% block footer %}
    {% include './common/footer.html' %}
{% endblock %}
</body>
</html>

movie.html

{% extends "common/home.html" %}

{% block content %}
    <div class="d-flex align-items-center justify-content-center">
        <div class="card mb-3" style="max-width: 1080px;">
            <div class="row">
                <div class="col-md-4">
                    <img src="{{ data["movie"].Poster }}" class="img-fluid rounded-start" alt="...">
                </div>
                <div class="col-md-8">
                    <div class="card-body">
                        <h5 class="card-title">{{ data["movie"].Title }}</h5>
                        <p class="card-text">Year:{{ data["movie"].Year }}</p>
                        <p class="card-text">Runtime:{{ data["movie"].Runtime }}</p>
                        <p class="card-text">Actors:{{ data["movie"].Actors }}</p>
                        <p class="card-text">{{ data["movie"].Actors }}</p>
                        <p class="card-text">{{ data["movie"].Year }}</p>
                        <p class="card-text"><small class="text-body-secondary">{{ data["movie"].Plot }}</small></p>
                    </div>
                    <div class="d-flex align-items-center justify-content-center">
                        <a href="{{ url_for("main") }}" class="btn btn-success">返回</a>
                    </div>
                </div>
            </div>
        </div>
    </div>
{% endblock %}

index.html

{% extends "common/home.html" %}

{% block content %}
    {% for movie in data["movies"].Search %}
        <div class="col text-center mt-3">
            <div class="card" style="height: 510px;overflow: hidden;width: 240px;">
                <img src="{{ movie.Poster }}" height="350" class="card-img-top" alt="...">
                <div class="card-body">
                    <h5 class="card-title" style="height: 48px;">{{ movie.Title[:35] }}</h5>
                    <p class="card-text">{{ movie.Year }}</p>
                    <a href="/{{ movie.imdbID }}" class="btn btn-primary">详情</a>
                </div>
            </div>
        </div>
    {% endfor %}
    {#    翻页    #}
    <div class="d-flex align-items-center justify-content-center">
        <div class="mt-3 mb-5">
            <nav aria-label="Page navigation example">
                {% if data.pages>0 %}

                    <ul class="pagination pagination-lg justify-content-center">
                        <li class="page-item {{ 'disabled' if data.page==1 else '' }}">
                            <a class="page-link" href="/?s={{ data.s }}&page={{ data.page -  1 }}"
                               aria-label="Previous">
                                <span aria-hidden="true"><<</span>
                            </a>
                        </li>
                        {% if data.pages<8 %}
                            {% for i in range(data.pages) %}
                                <li class="page-item"><a
                                        class="page-link {{ 'disabled' if data.page == i + 1 else '' }}"
                                        href="/?s={{ data.s }}&page={{ i + 1 }}">
                                    {{ i + 1 }}</a>
                                </li>
                            {% endfor %}
                        {% elif data.pages>=8 %}
                            {% for i in range(3) %}
                                {% if data.pages - 5 > data.page %}
                                    <li class="page-item"><a
                                            class="page-link {{ 'disabled' if data.page == i + data.page else '' }}"
                                            href="/?s={{ data.s }}&page={{ i + data.page }}">
                                        {{ i + data.page }}</a>
                                    </li>
                                {% else %}
                                    <li class="page-item"><a
                                            class="page-link {{ 'disabled' if data.page == i + data.pages - 5 else '' }}"
                                            href="/?s={{ data.s }}&page={{ data.pages - 5 + i }}">
                                        {{ i + data.pages - 5 }}</a>
                                    </li>
                                {% endif %}
                            {% endfor %}
                            <li class="page-item}">
                                <a class="page-link" href="javascript:(0)">
                                    <span aria-hidden="true">...</span>
                                </a>
                            </li>
                            {% for i in range(3)[::-1] %}
                                <li class="page-item"><a
                                        class="page-link {{ 'disabled' if data.page == data.pages - i else '' }}"
                                        href="/?s={{ data.s }}&page={{ data.pages - i }}">
                                    {{ data.pages - i }}</a>
                                </li>
                            {% endfor %}
                        {% endif %}
                        <li class="page-item {{ 'disabled' if data.page==data.pages else '' }}">
                            <a class="page-link" href="#" aria-label="Next">
                                <span aria-hidden="true">>></span>
                            </a>
                        </li>
                    </ul>
                {% else %}
                    搜索: <span class="text-warning">{{ data.s }}</span> 的结果为空！
                {% endif %}
            </nav>
        </div>
    </div>

{% endblock %}

index.html模板里，加上了没有结果时的代码：

{% else %}
  搜索: <span class="text-warning">{{ data.s }}</span> 的结果为空！
{% endif %}

把数字放前面，反而可以搜到，不知道翻译是咋翻译的。