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//expressåæ³app.get("/test",function(req,res){ fs.readFile("/file1",function(err,data){ if(err){ res.status().send("readfile1error");}fs.readFile("/file2",function(err,data){ if(err){ res.status().send("readfile2error");}res.type("text/plain");res.send(data);});});});Koaéè¿generatoråasync/await使ç¨åæ¥çåæ³æ¥å¤çå¼æ¥ï¼ææ¾å¥½äºcallbackåpromiseã
app.use(async(ctx,next)=>{ awaitnext();vardata=awaitdoReadFile();ctx.response.type="text/plain";ctx.response.body=data;});3.æè·é误Express沿ç¨Node.jsçError-Firstç模å¼ï¼ç¬¬ä¸ä¸ªåæ°æ¯error对象ï¼æ¥æè·é误ã
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