addEventListener('fetch', event => {
event.respondWith(handleRequest(event.request));
});
async function handleRequest(request) {
const url = new URL(request.url);
// 处理 CORS 预检请求
if (request.method === 'OPTIONS') {
return new Response(null, {
headers: {
'Access-Control-Allow-Origin': '*',
'Access-Control-Allow-Methods': 'POST, OPTIONS',
'Access-Control-Allow-Headers': 'Content-Type, Authorization',
},
});
}
// 处理 POST 请求
if (request.method === 'POST' && url.pathname === '/recognize') {
try {
const { token, imageId } = await request.json();
if (!token || !imageId) {
return new Response(JSON.stringify({ error: 'Missing token or imageId' }), {
status: 400,
headers: { 'Content-Type': 'application/json' },
});
}
// 调用 QwenLM API
const response = await fetch('https://chat.qwenlm.ai/api/chat/completions', {
method: 'POST',
headers: {
'accept': '*/*',
'authorization': `Bearer ${token}`,
'Content-Type': 'application/json',
},
body: JSON.stringify({
stream: false,
model: 'qwen-vl-max-latest',
messages: [
{
role: 'user',
content: [
{ type: 'text', text: '请严格只返回图片中的内容，不要添加任何解释、描述或多余的文字' },
{ type: 'image', image: imageId }, // 使用上传后的图片 ID
],
},
],
session_id: '1',
chat_id: '2',
id: '3',
}),
});
const data = await response.json();
return new Response(JSON.stringify(data), {
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*',
},
});
} catch (error) {
return new Response(JSON.stringify({ error: 'Internal Server Error' }), {
status: 500,
headers: { 'Content-Type': 'application/json' },
});
}
}
// 返回前端界面
return new Response(getHTML(), {
headers: { 'Content-Type': 'text/html' },
});
}
function getHTML() {
return `
智能图片识别
智能图片识别
📸
拖拽图片到这里，或点击上传
支持复制粘贴图片
![]()
`;
}