免费翻译API及使用指南——百度、腾讯-易微帮

一、百度翻译API

百度翻译API接口免费翻译额度：标准版（5万字符免费/每月）、高级版（100万字符免费/每月-需个人认证，基本都能通过）、尊享版（200万字符免费/每月-需企业认证，门槛高）；

超出免费额度价格：49元/百万字符；

官方介绍：百度翻译开放平台http://api.fanyi.baidu.com/product/111

代码调用测试：

import hashlib
import requests
import time

# 百度翻译API配置信息
APP_ID = '20240624002084131'
SECRET_KEY = '467YvIvdT4SgJKnu80i9'

# 定义百度翻译函数
def translate_to_chinese(text):
    url = "http://api.fanyi.baidu.com/api/trans/vip/translate"
    salt = str(time.time())
    sign = hashlib.md5((APP_ID + text + salt + SECRET_KEY).encode('utf-8')).hexdigest()
    params = {
        'q': text,
        'from': 'en',
        'to': 'zh',
        'appid': APP_ID,
        'salt': salt,
        'sign': sign
    }
    response = requests.get(url, params=params)
    result = response.json()

    # 添加错误处理和日志记录
    if 'trans_result' in result:
        return result['trans_result'][0]['dst']
    else:
        # 打印错误信息和完整的API响应
        print(f"翻译API响应错误: {result}")
        return text  # 如果翻译失败，返回原文

# 测试翻译功能
test_text = "Hello, this is a test."
translated_text = translate_to_chinese(test_text)
print(f"原文: {test_text}")
print(f"翻译结果: {translated_text}")

申请流程：

（1）：打开百度翻译开放平台https://api.fanyi.baidu.com，点击开发者信息；

（2）：首先注册开发者，然后您将可以在注册成功提示信息处看到“开通服务”的入口。另外，您也可随时前往【管理控制台】→ 【总览】处开通服务。开通服务时，请选择“通用翻译API”。

（3）：开通之后点击开发者信息即可看到APP ID和密钥。

二、腾讯翻译API

腾讯翻译API接口免费翻译额度：500万字符免费/每月；

超出免费额度价格：58元/百万字符，有字符资源包出售；

官方介绍：机器翻译计费概述-购买指南-文档中心-腾讯云https://cloud.tencent.com/document/product/551/35017

查看接口调用详情：自动翻译 - 机器翻译 - 控制台 (tencent.com)

代码调用测试：

import requests
import time
import hashlib
import hmac
import json

# 腾讯翻译API配置信息
SECRET_ID = 'YOUR_SECRET_ID '
SECRET_KEY = 'YOUR_SECRET_KEY '
REGION = 'ap-guangzhou'
ENDPOINT = 'tmt.tencentcloudapi.com'
SERVICE = 'tmt'
VERSION = '2018-03-21'
ACTION = 'TextTranslate'

def sign_request(secret_id, secret_key, method, endpoint, uri, params):
    timestamp = int(time.time())
    date = time.strftime('%Y-%m-%d', time.gmtime(timestamp))
    
    # 1. Build Canonical Request String
    http_request_method = method
    canonical_uri = uri
    canonical_querystring = ''
    canonical_headers = f'content-type:application/json\nhost:{endpoint}\n'
    signed_headers = 'content-type;host'
    payload_hash = hashlib.sha256(json.dumps(params).encode('utf-8')).hexdigest()
    canonical_request = (http_request_method + '\n' + 
                         canonical_uri + '\n' + 
                         canonical_querystring + '\n' + 
                         canonical_headers + '\n' + 
                         signed_headers + '\n' + 
                         payload_hash)
    
    # 2. Build String to Sign
    algorithm = 'TC3-HMAC-SHA256'
    credential_scope = f"{date}/{SERVICE}/tc3_request"
    string_to_sign = (algorithm + '\n' + 
                      str(timestamp) + '\n' + 
                      credential_scope + '\n' + 
                      hashlib.sha256(canonical_request.encode('utf-8')).hexdigest())
    
    # 3. Sign String
    def sign(key, msg):
        return hmac.new(key, msg.encode('utf-8'), hashlib.sha256).digest()
    
    secret_date = sign(('TC3' + secret_key).encode('utf-8'), date)
    secret_service = sign(secret_date, SERVICE)
    secret_signing = sign(secret_service, 'tc3_request')
    signature = hmac.new(secret_signing, string_to_sign.encode('utf-8'), hashlib.sha256).hexdigest()
    
    # 4. Build Authorization Header
    authorization = (f"{algorithm} "
                     f"Credential={secret_id}/{credential_scope}, "
                     f"SignedHeaders={signed_headers}, "
                     f"Signature={signature}")
    
    return authorization, timestamp

def translate_to_chinese(text):
    params = {
        "SourceText": text,
        "Source": "en",
        "Target": "zh",
        "ProjectId": 0
    }

    method = 'POST'
    uri = '/'
    authorization, timestamp = sign_request(SECRET_ID, SECRET_KEY, method, ENDPOINT, uri, params)

    headers = {
        'Content-Type': 'application/json',
        'Host': ENDPOINT,
        'X-TC-Action': ACTION,
        'X-TC-Timestamp': str(timestamp),
        'X-TC-Version': VERSION,
        'X-TC-Region': REGION,
        'Authorization': authorization
    }

    response = requests.post(f'https://{ENDPOINT}{uri}', headers=headers, data=json.dumps(params))
    result = response.json()
    
    if 'Response' in result and 'TargetText' in result['Response']:
        return result['Response']['TargetText']
    else:
        print(f"翻译API响应错误: {result}")
        return text  # 如果翻译失败，返回原文

# 测试翻译功能
text_to_translate = "Hello, how are you?"
translated_text = translate_to_chinese(text_to_translate)
print(f"原文: {text_to_translate}")
print(f"译文: {translated_text}")

申请流程：

（1）打开如下链接：https://cloud.tencent.com/

（2）登录后，在左上“产品”中搜索“机器翻译”并进入