如何将json文件返回给React

Question

在项目中，有一个json文件，其中包含了我需要在组件中显示的数据。如何在react中正确访问json文件，并从json中输出数据？

data.json

{
  "dictionary": [
    {
      "index": "1",
      "engwords": "Hello",
      "ruswords": "Привет"
    },
    {
      "index": "2",
      "engwords": "How are you?",
      "ruswords": "Как твои дела?"
    },
    {
      "index": "3",
      "engwords": "How old are you?",
      "ruswords": "Сколько тебе лет?"
    }
  ]
}

组件.js

import React, {Component} from "react";
import "./style.scss";
const dictionary = require ('./../../dictionary/dictionary.json');

export default class Test extends Component {
    render() {
        return (
            <div className="test">
                {dictionary.map(elem => (
                    <p>{elem}</p>))}
            </div>
        );
    }
};

Answer 1

这将渲染你的JSON中的所有数据

import React, {Component} from "react";
import "./style.scss";
const dictionaryFile = require ('./../../dictionary/dictionary.json');

export default class Test extends Component {
    render() {
        return (
            <div className="test">
                {dictionaryFile.dictionary.map(elem => (
                    <div>
                       <p>{elem.index}</p>
                       <p>{elem.engwords}</p>
                       <p>{elem.ruswords}</p>
                    </div>
                  ))
                }
            </div>
        );
    }
};

Answer 2

所有的键和值将被显示

import React, {Component} from "react";

import "./style.scss";
const dictionaryFile = require ('./../../dictionary/dictionary.json');

export default class Test extends Component {
    render() {
        return (
            <div className="test">
                {dictionaryFile.dictionary.map(elem => (
                    <div>
                    {Object.keys(elem).forEach(function(key) {
                      <p>{key}: { elem[key]}</p>
                      });}
                    </div>
                  ))
                }
            </div>
        );
    }
};

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script>

Answer 3

首先是将你的JSON文件导入React中。该文件通常存储在src文件夹的某个地方。你有2个常见的选项。 第一个是使用 json-loader 或者第二，你可以将你的文件存储为一个Javascript文件，并导出其内容，如。

// Save this as yourFile.js
const dataFromFile = {
  "dictionary": [
    {
      "index": "1",
      "engwords": "Hello",
      "ruswords": "Привет"
    },
    {
      "index": "2",
      "engwords": "How are you?",
      "ruswords": "Как твои дела?"
    },
    {
      "index": "3",
      "engwords": "How old are you?",
      "ruswords": "Сколько тебе лет?"
    }
  ]
}

export default dataFromFile

然后在你的组件中，从'...srcdataFromFile'导入dataFromFile；

从'...srcdataFromFile'导入dataFromFile。

然后在你的组件中：从'.srcdataFromFile'导入dataFromFile；然后

  return (
      <div>
      {dataFromFile.dictionary.map(elem => (<p>{elem}</p>))}
      </div>
  )