反应中的Axios多个请求 [英] Axios multiple Requests in React

问题描述

我正在尝试创建2个请求并使用 this.setState（{}）设置变量以进行进一步更改。

I am trying to create 2 requests and set variables with this.setState({}) for further changes.

这就是我得到的：

This is what i got:

class App extends React.Component {
  constructor() {
    super();
    this.state = {user: false, repository :false}
  }

  componentDidMount() {
    axios.all([
    axios.get('https://api.github.com/users/antranilan'),
    axios.get('https://api.github.com/users/antranilan/repos')
    ])
    .then(axios.spread(function (userResponse, reposResponse) {
            this.setState({user : userResponse.data, repository : reposResponse.data});
        });
  }
 
  render() {
    return (
     <div> 
      {this.state.user.login}
      {this.state.repository.length}
     </div>
    )
  }
}

ReactDOM.render(<App />, document.getElementById('app'));

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<div id="app"></div>

我通过多个问题查询了我的情况试图做，但没有解决我想要实现的目标。

I looked up through multiple questions with what i am trying to do but there was no solution to what i am trying to achive.

推荐答案

您的代码中存在绑定问题。

You have binding issue in your code.

class App extends React.Component {
  constructor() {
    super();
    // You should use object to delineate the type
    this.state = {user: {}, repository :{} }
  }

  componentDidMount() {
    // Better use native Promise.all
    Promise.all([
      axios.get('https://api.github.com/users/antranilan'),
      axios.get('https://api.github.com/users/antranilan/repos')
    ])
    // use arrow function to avoid loosing context
    // BTW you don't need to use axios.spread with ES2015 destructuring
    .then(([userResponse, reposResponse]) => {
            this.setState({user : userResponse.data, repository : reposResponse.data});
        });
  }
 
  render() {
    const { user, repository } = this.state
    return (
     <div> 
      {user && user.login}
      {repository && repository.length}
     </div>
    )
  }
}

ReactDOM.render(<App />, document.getElementById('app'));

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<div id="app"></div>

更新为@ JaromandaX指出你最好坚持使用原生 Promise.all 和解构。

UPDATE as @JaromandaX pointed out you'd better stick with native Promise.all and destructuring.

这篇关于反应中的Axios多个请求的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！