如何创建api？我的api没有被叫到

Question

我使用快速生成器创建了一个快速项目。这是我的项目结构

项目结构

users.js

var express = require("express");
var router = express.Router();
router.get("/abc", (req, res) => {
  res.json({ connect: "success" });
});
module.exports = router;

所以当我尝试在localhost：3000 / abc上打开它时，我根本得不到任何东西。 它说找不到404

这是我的app.js

var createError = require("http-errors");
var express = require("express");
var path = require("path");
var cookieParser = require("cookie-parser");
var logger = require("morgan");

var indexRouter = require("./routes/index");
var usersRouter = require("./routes/users");
var user = router("./controller/user");

var app = express();

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

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("/abc", user);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  //next(createError(404));
  res.status(404).send("sorry cant find it");
});

// 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;

Answer 1

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

app.get('/abc', function(req, res) {
 res.json({ connect: "success" });
});

module.exports = app;

您需要在结尾处导出app，然后您可以使用app.get。

或

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

router.get("/abc", (req, res) => {
    res.json({connect: "success"});
});

module.exports = router;

Answer 2

module.exports

中必须users.js路由器

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

router.get("/abc", (req, res) => {
    res.json({connect: "success"});
});

module.exports = router;