Javascript Azure上的SQL Server已连接到REST API Express.js/Node.js[类型错误：req.SQL不是函数]

您好，我在用express4连接Azure SQL Server时遇到了一个问题。我正尝试在react native with Node/Express server（REST API）中创建应用程序，但在Express中设置express4 tedios后，出现以下错误： req.sql不是一个函数

TypeError:req.sql不是函数

这是服务器上的my app.js文件夹

var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var cors = require("cors");
var tediousExpress = require('express4-tedious');

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var testAPIRouter = require("./routes/testAPI");

var app = express();

app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

app.use(cors());
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', indexRouter);
app.use('/users', usersRouter);
app.use("/testAPI", testAPIRouter);

app.use(function (req, res, next) {
  req.sql = tediousExpress(req, 
    {
    "server"  : "something.database.windows.net",
    "userName": "something",
    "password": "something",
    "options": { "encrypt": true, "database": "something" }
    }
    );
  next();
});

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;

这是我运行req.sql（）函数的testAPI.js

---

我非常感谢任何人的帮助。：）

这是因为您在路由之后定义了中间件。您必须首先定义这个中间件。和，调用要定义的路由

例如：

---

好的，非常感谢，没有错误。存在的问题是testAPI上的本地主机为空，并且sql server中没有任何表是swown。你不知道为什么吗？

var express = require("express");
var router = express.Router();

router.get('/', function (req, res) {

  req.sql("select * from Persons for json path")
      .into(res);

});

module.exports = router;

app.use(function (req, res, next) {
  req.sql = tediousExpress(req, 
    {
    "server"  : "something.database.windows.net",
    "userName": "something",
    "password": "something",
    "options": { "encrypt": true, "database": "something" }
    }
    );
  next();
});

app.use('/', indexRouter);
app.use('/users', usersRouter);
app.use("/testAPI", testAPIRouter);