Handlings Route Express.js 我从 try 和 catch 块都得到响应？

Question

//服务器.js

const mongoose = require("mongoose");
const dotenv = require("dotenv");
dotenv.config({ path: "./config.env" });
const app = require("./app");

mongoose
  .connect(process.env.LOCAL_CONN_STRING, {
    useNewUrlParser: true,
    useUnifiedTopology: true,
  })
  .then((conn) => {
    console.log(`Connection successfull with : ${conn}`);
  })
  .catch((err) => {
    console.log("error is: ", err);
  });

// **************************************
// start the server
app.listen(5000, () => {
  console.log("server has started");
});

// 控制器 `

createCategory = async(req, res) => {
    try {
        const { name } = req.body;
        const category = await Category.create(
            { name },
        {
        new: true,
        runValidators: true,
      }
    );
    res.status(200).json({
        status: "success",
        data: {
            category,
        },
      });
    } catch (err) {
        res.status(404).json({
            status: "fail",
            data: {
                error: err.message,
            },
            });
     }
};

// 验证器是 `

const categorySchema = new mongoose.Schema({
     name: {
         type: String,
         required: [true, "category must be specified"],
         minlength: 10,
         maxlength: 100,
         unique: [true, "Category name must be unique"],
      },
  });

//我从邮递员那里得到的回复在给定的图像中

我期待该文档将被创建，并且它已创建，如您在 mongoDb 指南针中的图像中看到的那样，但我的 catch 块仍然执行，这里出了什么问题帮助？

`

Answer 1

您需要添加此行才能解析请求正文。

app.use(express.json());