使用ReactJS从JSON获取数据时遇到问题

Question

我有一个像这样的JSON文件，名为data.json

{
  "link_template": "http://api.rottentomatoes.com/api/public/v1.0/lists/movies/box_office.json?limit={num-results}&country={country-code}",
  "links": {
    "alternate": "http://www.rottentomatoes.com/movie/box-office/",
    "self": "http://api.rottentomatoes.com/api/public/v1.0/lists/movies/box_office.json?limit=20&country=us"
  },
  "movies": [
    {
      "abridged_cast": [
        {
          "characters": [
            "Dominic Toretto"
          ],
          "id": "162652472",
          "name": "Vin Diesel"
        },
        {
          "characters": [
            "Brian O'Conner"
          ],
          "id": "162654234",
          "name": "Paul Walker"
        },
        {
          "characters": [
            "Louie Tran"
          ],
          "id": "162684066",
          "name": "Tony Jaa"
        },
        {
          "characters": [
            "Deckard Shaw"
          ],
          "id": "162653720",
          "name": "Jason Statham"
        },
        {
          "characters": [
            "Luke Hobbs"
          ],
          "id": "770893686",
          "name": "Dwayne \"The Rock\" Johnson"
        }
      ],
      "alternate_ids": {
        "imdb": "2820852"
      },
      "critics_consensus": "",
      "id": "771354922",
      "links": {
        "alternate": "http://www.rottentomatoes.com/m/furious_7/",
        "cast": "http://api.rottentomatoes.com/api/public/v1.0/movies/771354922/cast.json",
        "reviews": "http://api.rottentomatoes.com/api/public/v1.0/movies/771354922/reviews.json",
        "self": "http://api.rottentomatoes.com/api/public/v1.0/movies/771354922.json",
        "similar": "http://api.rottentomatoes.com/api/public/v1.0/movies/771354922/similar.json"
      },
      "mpaa_rating": "PG-13",
      "posters": {
        "detailed": "http://resizing.flixster.com/pVDoql2vCTzNNu0t6z0EUlE5G_c=/51x81/dkpu1ddg7pbsk.cloudfront.net/movie/11/18/14/11181482_ori.jpg",
        "original": "http://resizing.flixster.com/pVDoql2vCTzNNu0t6z0EUlE5G_c=/51x81/dkpu1ddg7pbsk.cloudfront.net/movie/11/18/14/11181482_ori.jpg",
        "profile": "http://resizing.flixster.com/pVDoql2vCTzNNu0t6z0EUlE5G_c=/51x81/dkpu1ddg7pbsk.cloudfront.net/movie/11/18/14/11181482_ori.jpg",
        "thumbnail": "http://resizing.flixster.com/pVDoql2vCTzNNu0t6z0EUlE5G_c=/51x81/dkpu1ddg7pbsk.cloudfront.net/movie/11/18/14/11181482_ori.jpg"
      },
      "ratings": {
        "audience_rating": "Upright",
        "audience_score": 88,
        "critics_rating": "Certified Fresh",
        "critics_score": 82
      },
      "release_dates": {
        "theater": "2015-04-03"
      },
      "runtime": 140,
      "synopsis": "Continuing the global exploits in the unstoppable franchise built on speed, Vin Diesel, Paul Walker and Dwayne Johnson lead the returning cast of Fast & Furious 7. James Wan directs this chapter of the hugely successful series that also welcomes back favorites Michelle Rodriguez, Jordana Brewster, Tyrese Gibson, Chris \"Ludacris\" Bridges, Elsa Pataky and Lucas Black. They are joined by international action stars new to the franchise including Jason Statham, Djimon Hounsou, Tony Jaa, Ronda Rousey and Kurt Russell.",
      "title": "Furious 7",
      "year": 2015
    },
    {
      "abridged_cast": [
        {
          "characters": [
            "Oh"
          ],
          "id": "770702500",
          "name": "Jim Parsons"
        },
        {
          "characters": [
            "Tip"
          ],
          "id": "351524959",
          "name": "Rihanna"
        },
        {
          "characters": [
            "Captain Smek"
          ],
          "id": "162654836",
          "name": "Steve Martin"
        },
        {
          "id": "162652167",
          "name": "Jennifer Lopez"
        }
      ],
      "alternate_ids": {
        "imdb": "2224026"
      },
      "critics_consensus": "",
      "id": "771315639",
      "links": {
        "alternate": "http://www.rottentomatoes.com/m/home_2015/",
        "cast": "http://api.rottentomatoes.com/api/public/v1.0/movies/771315639/cast.json",
        "reviews": "http://api.rottentomatoes.com/api/public/v1.0/movies/771315639/reviews.json",
        "self": "http://api.rottentomatoes.com/api/public/v1.0/movies/771315639.json",
        "similar": "http://api.rottentomatoes.com/api/public/v1.0/movies/771315639/similar.json"
      },
      "mpaa_rating": "PG",
      "posters": {
        "detailed": "http://resizing.flixster.com/LO7V_j1xUTlsbwzIyCINBxBm5qE=/54x80/dkpu1ddg7pbsk.cloudfront.net/movie/11/18/17/11181778_ori.jpg",
        "original": "http://resizing.flixster.com/LO7V_j1xUTlsbwzIyCINBxBm5qE=/54x80/dkpu1ddg7pbsk.cloudfront.net/movie/11/18/17/11181778_ori.jpg",
        "profile": "http://resizing.flixster.com/LO7V_j1xUTlsbwzIyCINBxBm5qE=/54x80/dkpu1ddg7pbsk.cloudfront.net/movie/11/18/17/11181778_ori.jpg",
        "thumbnail": "http://resizing.flixster.com/LO7V_j1xUTlsbwzIyCINBxBm5qE=/54x80/dkpu1ddg7pbsk.cloudfront.net/movie/11/18/17/11181778_ori.jpg"
      },
      "ratings": {
        "audience_rating": "Upright",
        "audience_score": 69,
        "critics_rating": "Rotten",
        "critics_score": 47
      },
      "release_dates": {
        "theater": "2015-03-26"
      },
      "runtime": 93,
      "synopsis": "When Oh, a loveable misfit from another planet, lands on Earth and finds himself on the run from his own people, he forms an unlikely friendship with an adventurous girl named Tip who is on a quest of her own. Through a series of comic adventures with Tip, Oh comes to understand that being different and making mistakes is all part of being human. And while he changes her planet and she changes his world, they discover the true meaning of the word HOME. (c) Fox",
      "title": "Home",
      "year": 2015
    }
  ]
}

这是我的ReactJS代码，旨在从该JSON文件获取数据并绑定到我的React组件中

var CastMember=React.createClass({
    render:function(){
        <div className="castmember">
        </div>
    }
});
var Cast=React.createClass({
    render:function(){
        var cast_members=this.props.cast.map(function (member){
            return (
                <CastMember member={member}/>
            );
        });
        return (
            <div className="cast">
                {cast_members}
            </div>
        );
    }
});
var Movie=React.createClass({
    render:function(){
        return (
            <div className="movieBox">
                <Cast cast={this.props.movie.abridged_cast}/>
            </div>
        );
    }
});
var MovieList=React.createClass({
    render:function(){
        var movieNodes=this.props.movies.map(function (movie){
            return (
                <Movie movie={movie}/>
            );
        });
        return (
            <div className="movieList">
                {movieNodes}
            </div>
        );
    }
});
var DataBlock = React.createClass({
        getInitialState:function() {
            return {data:{
                movies:[
                    {abridged_cast:[]}
                ]
            }}
        },
        componentDidMount:function() {
            var a=this;
            $.ajax({
                url:this.props.url,
                dataType:'json',
                cache:false,
                success:function(data){
                    this.setState({data:data})
                }.bind(this)
            });
        },
        render: function() {
            return (
                <div className="dataBlock">
                    <h1>Movie List</h1>
                    <MovieList movies={this.state.data.movies}/>
                </div>
);
}
});
React.render(
    <DataBlock url="data.json"/>,
    document.getElementById('content')
);

我一直在按照从上到下的顺序进行此演示。 我能够从JSON文件中获取movies列表并进行渲染，但现在却陷入了每movie abridged_cast中

在Cast组件的render功能中，如果我将其替换为渲染{this.props.cast} ，那么一切都会显示出来。 但是我无法将它们映射到CastMember组件的member属性：上面的代码未显示任何内容。 我的代码有什么问题？

Answer 1

var CastMember=React.createClass({
    render:function(){
        <div className="castmember">
        </div>
    }
});

当您将数据member传递给CastMember > <CastMember member={member}/> ， CastMember组件应处理其道具。

这会有所帮助：

var CastMember=React.createClass({
        render:function(){
            return (
               <div className="castmember">
                 {this.props.member}
               </div>
            );
        }
    });