Question

router.post('/addtodo', (req, res, next) => {
let todo = new Todos({
    text: req.body.text,
    date: new Date(),
  });
Todos.addTodo(todo, (err, todos, next) => {
    if(err) throw err;
    res.json(todos);
});
});

我正在尝试使用上述方法在Todo架构中保存文档架构和方法如下

const todoSchema = mongoose.Schema({
text: {
    type: String
},
date: {
    type: Date, 
    default: Date.now 
}
});
const Todos = module.exports = mongoose.model('todos', todoSchema);

//Retrieve documents
module.exports.getTodos = (callback) => {
Todos.find(callback);
};

//Add document
module.exports.addTodo = (todo, callback) => {
Todos.create(todo, callback);
};

但是当我尝试使用邮递员POST一个json对象时，它显示了这个错误。

 <body>
    <pre>TypeError: Cannot read property &#39;text&#39; of undefined
        <br> &nbsp; &nbsp;at router.post (C:\Users\shahaji.shinde\Desktop\practice\todo-mean\router\todoroute.js:18:24)
        <br> &nbsp; &nbsp;at Layer.handle [as handle_request] (C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\router\layer.js:95:5)
        <br> &nbsp; &nbsp;at next (C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\router\route.js:137:13)
        <br> &nbsp; &nbsp;at Route.dispatch (C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\router\route.js:112:3)
        <br> &nbsp; &nbsp;at Layer.handle [as handle_request] (C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\router\layer.js:95:5)
        <br> &nbsp; &nbsp;at C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\router\index.js:281:22
        <br> &nbsp; &nbsp;at Function.process_params (C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\router\index.js:335:12)
        <br> &nbsp; &nbsp;at next (C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\router\index.js:275:10)
        <br> &nbsp; &nbsp;at Function.handle (C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\router\index.js:174:3)
        <br> &nbsp; &nbsp;at router (C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\router\index.js:47:12)
        <br> &nbsp; &nbsp;at Layer.handle [as handle_request] (C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\router\layer.js:95:5)
        <br> &nbsp; &nbsp;at trim_prefix (C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\router\index.js:317:13)
        <br> &nbsp; &nbsp;at C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\router\index.js:284:7
        <br> &nbsp; &nbsp;at Function.process_params (C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\router\index.js:335:12)
        <br> &nbsp; &nbsp;at next (C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\router\index.js:275:10)
        <br> &nbsp; &nbsp;at expressInit (C:\Users\shahaji.shinde\Desktop\practice\todo-mean\node_modules\express\lib\middleware\init.js:40:5)
    </pre>
</body>

错误位于第一个代码段行号3中。

Answer 1

您发布的信息让我想到了两个可能的原因： - 这可能是因为您没有发送适当的Content-Type：application / json（检查它）。 - 服务器还没准备好解析json：为此，你应该有这样的东西：

var bodyparser = require('body-parser');
app.use(bodyparser.urlencoded({ extended: true }));
app.use(bodyparser.json({limit: '10mb'}));

让我知道它是否有助于你

TypeError：无法读取属性＆＃39; text＆＃39;未定义的

1 个答案: