diff --git a/docs/index.html b/docs/index.html
index 621b704f..d368a4ad 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -2303,6 +2303,7 @@ async function send(){
// 3. 调用API —— 优先用用户自己的API Key（直接走用户网络），其次尝试后端
sending=true;document.getElementById('chatSnd').disabled=true;showTyp();
var replied=false;
+ var backendError='';
// 用户配了API Key → 直接用用户的网络通道调用，不经过后端
if(apiCfg.connected&&apiCfg.key){
@@ -2327,28 +2328,48 @@ async function send(){
document.getElementById('mM').textContent=apiCfg.model;
replied=true;
}
- }catch(e){}
+ }catch(e){backendError='用户API: '+(e.name==='TimeoutError'?'请求超时':e.message)}
}
- // 用户没配Key或调用失败 → 尝试后端
+ // 用户没配Key或调用失败 → 尝试后端（含自动重试）
if(!replied){
- try{
- var res=await fetch('/api/chat',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({message:msg,userId:usr.id}),signal:AbortSignal.timeout(60000)});
- var data=await res.json();hideTyp();
- if(data.message){
- replied=true;
- chatMsg(data.message,'b',{m:data.model||'铸渊',t:data.tier||''});
- if(data.tier!=='free')mCalls++;
- document.getElementById('mC').textContent=mCalls;
- document.getElementById('chatTg').textContent=data.model||'ready';
- if(data.model)document.getElementById('mM').textContent=data.model;
+ var retryCount=0;var maxRetries=2;
+ while(retryCount<=maxRetries&&!replied){
+ try{
+ var res=await fetch('/api/chat',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({message:msg,userId:usr.id}),signal:AbortSignal.timeout(retryCount===0?60000:30000)});
+ if(!res.ok){
+ backendError='服务器返回 '+res.status;
+ retryCount++;continue;
+ }
+ var data=await res.json();hideTyp();
+ if(data.message){
+ replied=true;
+ chatMsg(data.message,'b',{m:data.model||'铸渊',t:data.tier||''});
+ if(data.tier!=='free')mCalls++;
+ document.getElementById('mC').textContent=mCalls;
+ document.getElementById('chatTg').textContent=data.model||'ready';
+ if(data.model)document.getElementById('mM').textContent=data.model;
+ }else if(data.error){
+ backendError=data.message||'服务端错误';
+ retryCount++;continue;
+ }
+ break;
+ }catch(e){
+ backendError=e.name==='TimeoutError'?'后端响应超时':'网络连接失败';
+ retryCount++;
+ if(retryCount<=maxRetries){await new Promise(function(r){setTimeout(r,1000*retryCount)})}
}
- }catch(e){}
+ }
}
- // 所有外部通道都失败 → 用本地智能回复（用户浏览器就是计算资源）
+ // 所有外部通道都失败 → 用本地智能回复 + 显示连接状态
if(!replied){
- hideTyp();chatMsg(offline(msg),'b',{m:'铸渊',t:'本地智能'});
+ hideTyp();
+ var offlineMsg=offline(msg);
+ if(backendError){offlineMsg+='\n\n⚠️ 后端状态: '+backendError+'\n点击右下角💬重试，或配置API密钥直连大模型。'}
+ chatMsg(offlineMsg,'b',{m:'铸渊',t:'本地智能'});
+ document.getElementById('chatTg').textContent='离线';
+ document.getElementById('chatTg').style.color='var(--err,#f87171)';
}
sending=false;document.getElementById('chatSnd').disabled=false;
@@ -2761,7 +2782,11 @@ checkConn();setInterval(checkConn,30000);
chatOverlay.classList.toggle('open',chatOpen);
fab.classList.toggle('on',chatOpen);
fab.textContent=chatOpen?'✕':'💬';
- if(chatOpen)setTimeout(function(){chatIn.focus()},200);
+ if(chatOpen){
+ setTimeout(function(){chatIn.focus()},200);
+ // 打开聊天时预检后端连接状态
+ checkChatBackend();
+ }
};
fab.onclick=function(e){
if(hasMoved){hasMoved=false;return}
@@ -2773,6 +2798,59 @@ checkConn();setInterval(checkConn,30000);
};
})();
+/* ════════════════════════════════════════
+ CHAT BACKEND HEALTH CHECK (打开聊天时预检)
+ ════════════════════════════════════════ */
+var chatBackendOk=null;
+async function checkChatBackend(){
+ var tg=document.getElementById('chatTg');
+ try{
+ var r=await fetch('/api/health',{signal:AbortSignal.timeout(5000)});
+ if(r.ok){
+ chatBackendOk=true;
+ if(tg){tg.textContent='ready';tg.style.color=''}
+ }else{
+ chatBackendOk=false;
+ if(tg){tg.textContent='后端异常('+r.status+')';tg.style.color='var(--err,#f87171)'}
+ }
+ }catch(e){
+ chatBackendOk=false;
+ if(tg){tg.textContent='后端未连接';tg.style.color='var(--err,#f87171)'}
+ // 显示连接提示
+ if(chatMs&&!document.getElementById('chatConnTip')){
+ var tip=document.createElement('div');
+ tip.id='chatConnTip';
+ tip.className='cm s';
+ tip.innerHTML='⚠️ 后端服务暂时未连接。本地智能回复可用，配置API密钥可解锁AI对话。
';
+ chatMs.appendChild(tip);
+ chatMs.scrollTop=chatMs.scrollHeight;
+ }
+ }
+}
+async function retryChatBackend(){
+ var tip=document.getElementById('chatConnTip');
+ if(tip)tip.remove();
+ var tg=document.getElementById('chatTg');
+ if(tg){tg.textContent='连接中...';tg.style.color='var(--warn,#fbbf24)'}
+ try{
+ var r=await fetch('/api/chat/reconnect',{method:'POST',signal:AbortSignal.timeout(15000)});
+ var data=await r.json();
+ if(data.connected){
+ chatBackendOk=true;
+ if(tg){tg.textContent='ready';tg.style.color=''}
+ chatMsg(data.message||'🌊 铸渊已重新连接！','b',{m:'铸渊',t:'reconnect'});
+ }else{
+ chatBackendOk=false;
+ if(tg){tg.textContent='离线';tg.style.color='var(--err,#f87171)'}
+ chatMsg('⚠️ 后端大模型暂时不可用。本地智能回复仍然可用。','b',{m:'铸渊',t:'本地'});
+ }
+ }catch(e){
+ chatBackendOk=false;
+ if(tg){tg.textContent='离线';tg.style.color='var(--err,#f87171)'}
+ chatMsg('⚠️ 无法连接后端服务。请稍后重试或配置API密钥。','b',{m:'铸渊',t:'本地'});
+ }
+}
+
/* ════════════════════════════════════════
SYSTEM STATUS (左面板实时数据)
════════════════════════════════════════ */
diff --git a/server/app/server.js b/server/app/server.js
index 94b0d92a..53353d5a 100644
--- a/server/app/server.js
+++ b/server/app/server.js
@@ -291,24 +291,42 @@ app.post('/api/chat', async (req, res) => {
// 降级到通用聊天引擎
if (chatEngine) {
- const result = await chatEngine.chat(sessionId, message);
- return res.json({
- success: true,
- ...result,
- sessionId
- });
+ try {
+ const result = await chatEngine.chat(sessionId, message);
+ return res.json({
+ success: true,
+ ...result,
+ sessionId
+ });
+ } catch (ceErr) {
+ console.error(`[聊天引擎] 通用引擎异常: ${ceErr.message}`);
+ // 继续到离线回复
+ }
}
- // 所有引擎都不可用
+ // 所有引擎都不可用 — 仍然返回成功，给用户有意义的反馈
+ const engineStatus = [];
+ if (!domesticGateway) engineStatus.push('国内模型网关未加载');
+ else {
+ try {
+ const gwStats = domesticGateway.getGatewayStats();
+ if (gwStats.availableModels === 0) engineStatus.push('无可用模型API密钥');
+ else engineStatus.push(`已配置${gwStats.availableModels}个模型`);
+ } catch (e) { engineStatus.push('网关状态未知'); }
+ }
+ if (!chatEngine) engineStatus.push('通用引擎未加载');
+
res.json({
success: true,
- message: '💫 铸渊正在唤醒中...聊天引擎尚未加载。请稍后再试。',
+ message: '💫 铸渊正在唤醒中...聊天引擎尚未就绪。请稍后再试，或在聊天面板中配置你的API密钥直连大模型。',
model: 'offline',
tier: 'free',
+ engineStatus: engineStatus.join(' · '),
sessionId
});
} catch (err) {
- res.status(500).json({ error: true, message: err.message });
+ console.error(`[聊天API] 未捕获异常: ${err.message}`);
+ res.status(500).json({ error: true, message: '聊天服务暂时异常，请稍后重试' });
}
});
diff --git a/server/sites/cn-landing/index.html b/server/sites/cn-landing/index.html
index c8ee8428..5e2bf8b7 100644
--- a/server/sites/cn-landing/index.html
+++ b/server/sites/cn-landing/index.html
@@ -3,8 +3,18 @@
-光湖实验室 · GuanghuLab
-
+光湖实验室 · GuanghuLab — 语言驱动的智能创作平台
+
+
+
+
+
+
+
+
+
+
+