NODE JS- EXPRESS:在适用于GET的情况下，无法从HTTP上下文中检索POST和PUT请求的值 [英] NODE JS- EXPRESS: Unable to retrieve value from HTTP Context for POST and PUT requests while it works for GET

问题描述

在Node.js和Express框架中，当它适用于GET时，我无法从HTTP上下文中检索POST和PUT请求的值.我正在使用httpContext设置唯一的requestId标识符，以便在记录日志以跟踪API请求时可以使用它.

In Node.js and Express framework, I am unable to retrieve value from HTTP Context for POST and PUT requests while it works for GET. I am using httpContext to set a unique requestId identifier so that I can use it while logging to trace API requests.

我发现HttpContext可以被中间件中的其他一些软件包重置，是否有更好的方法来存储可以在所有模块中访问的请求范围的数据.

I found out that HttpContext could be reset by some other packages in middle ware, is there a better way to store data for a request scope which could be accessed in all modules.

app.js文件

        const app = express();
        app.use(httpContext.middleware);
        //Assign unique identifier to each req
        app.use(function (req, res, next) {
          let test = uuidv1();
          httpContext.set("reqId", test);
          next();
        });

        const PORT = process.env.PORT || 3001;
        Connection.setupPool();
        app.use(express.json());
        app.use(helmet());
        if (app.get("env") === "development") {
          app.use(morgan("tiny"));
        }

        //use to access a resource in the root through url
        app.use(express.static("resource"));

        app.use("/users", userRouter);
        //Code For Instagram authentication Using Passport
        logger.info("End-Instagram Authentication Configuration");
        app.listen(PORT, () => {
          logger.info(`app running port ${PORT}`);
        });

我从httpContext检索reqId的代码

My code for retrieving the reqId from httpContext

logger.js

logger.js

   message = httpContext.get("reqId") ? "RequestId: " + 
             httpContext.get("reqId")+" "+ message: ""+ message ;

推荐答案

我希望此解决方案可以解决您的问题，并为有此问题的任何人节省很多时间

i hope this solution solve your problem and save many hours for anyone that have this problem

您可以使用bindEmitter来解决问题

you can just use bindEmitter to solve the problem

app.use((req, res, next) => {
    httpContext.ns.bindEmitter(req);
    httpContext.ns.bindEmitter(res);
    var requestId = req.headers["x-request-id"] || uuidv4();
    httpContext.set("requestId", requestId);
    console.log('request Id set is: ', httpContext.get('requestId'));
    next();
});

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