Question

我遇到了这个无法解决的错误，并且对此感到困惑。

expressValidator（{^ press \ lib \ application.js：TypeError： expressValidator不是函数

这是完整的错误报告：

C：\ Users \ Desktop \ src \ app.js：50 expressValidator（{^ press \ lib \ application.js：TypeError：expressValidator不是功能在对象。（C：\ Users \ Desktop \ src \ app.js：50：5）：3）在Module._compile（内部/模块/cjs/loader.js:776:30）在Object.Module._extensions..js（内部/模块/cjs/loader.js:787:10）在Module.load（internal / modules / cjs / loader.js：653：32）在tryModuleLoad（内部/模块/cjs/loader.js:593:12）在Function.Module._load（内部/模块/cjs/loader.js:585:3）在Function.Module.runMain（内部/模块/cjs/loader.js:829:12）在启动时（internal / bootstrap / node.js：283：19）在bootstrapNodeJSCore（internal / bootstrap / node.js：622：3）

我做了一些与该错误相关的线程上建议的操作，但它们不能解决我的问题。

有人可以帮忙吗？

这是我的app.js代码

var express = require("express");
var path = require("path");
var favicon = require("serve-favicon");
var logger = require("morgan");
var cookieParser = require("cookie-parser");
var bodyParser = require("body-parser");
var session = require("express-session");
var passport = require("passport");
var LocalStrategy = require("passport-local").Strategy;
// var expressValidator = require("express-validator");
const { check, expressValidator } = require('express-validator');
var multer = require("multer");
var upload = multer({ dest: "./uploads" });
var flash = require("connect-flash");
var bcrypt = require("bcryptjs");
var mongo = require("mongodb");
var mongoose = require("mongoose");
var db = mongoose.connection;

var routes = require("./routes/index");
var users = require("./routes/users");

var app = express();

// view engine setup
app.set("views", path.join(__dirname, "views"));
app.set("view engine", "jade");

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger("dev"));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));

// Handle Sessions
app.use(
  session({
    secret: "secret",
    saveUninitialized: true,
    resave: true
  })
);

// Passport
app.use(passport.initialize());
app.use(passport.session());

// Validator
app.use(
  expressValidator({
    errorFormatter: function(param, msg, value) {
      var namespace = param.split("."),
        root = namespace.shift(),
        formParam = root;

      while (namespace.length) {
        formParam += "[" + namespace.shift() + "]";
      }
      return {
        param: formParam,
        msg: msg,
        value: value
      };
    }
  })
);

app.use(cookieParser());
app.use(express.static(path.join(__dirname, "public")));

app.use(flash());
app.use(function(req, res, next) {
  res.locals.messages = require("express-messages")(req, res);
  next();
});

app.get("*", function(req, res, next) {
  res.locals.user = req.user || null;
  next();
});

app.use("/", routes);
app.use("/users", users);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error("Not Found");
  err.status = 404;
  next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get("env") === "development") {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render("error", {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render("error", {
    message: err.message,
    error: {}
  });
});

module.exports = app;

expressValidator（{^ press \ lib \ application.js：TypeError：expressValidator不是函数

0 个答案: