Question

`const httpContext = require（'request-context'）; const app = express（）; app.use（httpContext.middleware（ '请求'））;

httpContext.set（'xxxxx'，'jnsdkj'）; ` 它抛出一个错误'找不到设置属性的活动上下文' 它在当地工作但不在天蓝色工作它曾经奏效过。

Answer 1

我检查了包request-context并创建了一个示例azure web app来检查此问题。

<强> app.js

const express = require('express')
const app = express()
const cookieParser = require('cookie-parser')
const httpContext = require('request-context')
app.use(httpContext.middleware('request'))
app.use(cookieParser())

app.use(function (req, res, next) {
        var cookie = req.cookies.uname;
        console.log("usercookie:"+cookie);
        if(cookie!=undefined){
        // set the user who made this request on the context
            httpContext.set('request:user', {username:cookie,loggedTime:req.cookies.loggedTime});
        }
        next();
});

app.get('/login', (req, res) => {
    var user=req.query.name;
    if(user==undefined)
       res.send('you need to pass the username.');
    else{
        //set a cookie
        res.cookie('uname',user, { maxAge: 900000, httpOnly: true });
        res.cookie('loggedTime',new Date(), { maxAge: 900000, httpOnly: true });
        console.log('cookie created successfully');
        res.send('login successed.');
    }
 });

app.get('/', (req, res) => {
    res.send('Hello World!');
    });

app.get('/me',(req,res)=>{
    res.send('Hello World!'+httpContext.get('request:user.username')+",loggedTime:"+httpContext.get('request:user.loggedTime'));
});

app.listen(process.env.PORT || 3000, () => console.log('Example app listening on port 3000!'))

<强>的package.json

  "dependencies": {
    "cookie-parser": "^1.4.3",
    "express": "^4.16.3",
    "request-context": "^2.0.0"
  }

<强> TEST：

https://brucenode.azurewebsites.net/login?name=bruce

https://brucenode.azurewebsites.net/me

httpContext.set（'xxxxx'，'jnsdkj'）; `它抛出错误'找不到设置属性的活动上下文'

我认为您可能需要检查代码并验证调用httpContext.set的位置。对于Azure Web应用程序，您还可以Enable diagnostics logging for web apps in Azure App Service解决此问题。

Answer 2

本地我在azure中使用节点版本8.7.0，允许最多10.0 如果我们在包中提及指定版本，则azure使用最新版本为了避免这种混乱

在package.json中提及您正在开发的版本

"engines": {
"node": "8.7.0"  // mentioning >= causes to use latest version

}，

在azure中出现错误“找不到设置属性的活动上下文”

2 个答案: