如何使用 Axios 从 JSON 获取数据？

Question

I am trying to fetch server side data in JSON format in a table with Axios, but can't understand how to get every field like id , companyInfo etc.

json :

[
  {
    "id": 1,
    "companyInfo": 1,
    "receiptNum": 1,
    "receiptSeries": "АА",
    "customerName": "Mark",
    "customerSurname": "Smith",
    "customerMiddleName": "Jk",
    "customerPhone": "0845121",
    "services": [
      2,
      16
    ]
  }
]

axios :

 store.dispatch((dispatch) => {
dispatch({type: Actions.FETCH_DATA_START})
axios.get("http://localhost:3004/paymentReceipts")
  .then((response) => {
    dispatch({ type: Actions.RECEIVE_DATA, payload: response })
  }).catch((err) => {
    dispatch({type: Actions.FETCH_DATA_ERROR, payload: err})
  })

reducer :

export const initialState = {
  paymentReceipts: []
};

export default handleActions<FetchData>({
  [Actions.FETCH_DATA_START]: (state, action) => {
    return ;
  },
  [Actions.FETCH_DATA_ERROR]: (state, action) => {
    return;
  },
  [Actions.RECEIVE_DATA]: (state, action) => {
      console.log("DONE WITH STATE");
    return {...state, 
        paymentReceipts :  action.payload
    }
  }
}, initialState)

App

@connect(mapStateToProps, mapDispatchToProps)
export class App extends React.Component<App.Props, App.State> {

  constructor() {
    super();
  }

  render() {
    console.log("CONTAINER IS ");
    console.log(this.props.receiveData);

    return (
      <div className={style.normal}>

      </div>
    );
  }
}

function mapStateToProps(state: RootState) {
  return {
    receiveData: state.receiveData
  };
}

function mapDispatchToProps(dispatch) {
  return {

  };
}

This is what I get from console.log :

So how to get this values from JSON?

Answer 1

You will get all your data into response.data .

axios.get("http://localhost:3004/paymentReceipts")
  .then((response) => {
    dispatch({ type: Actions.RECEIVE_DATA, payload: response.data }) //Change
  }).catch((err) => {
    dispatch({type: Actions.FETCH_DATA_ERROR, payload: err})
  })

Answer 2

To access a single attribute within your json-response you can simply do:

response.data.<attribute>

eg:

   axios.get("http://localhost:3004/paymentReceipts")
  .then((response) => {
    dispatch({ type: Actions.RECEIVE_DATA, payload: response.data, id: response.data.id }) //Change
  }).catch((err) => {
    dispatch({type: Actions.FETCH_DATA_ERROR, payload: err})
  })

Depending on the structure of your json and how it's formatted (eg array of objects) you have to iterate through it.

Answer 3

If you've received text instead of JSON,just like I did,

With async/await, it's simply,

let results = await axios.get("http://localhost:3004/paymentReceipts")
try {
  let response = JSON.parse(results.request.response)  
  dispatch({ type: Actions.RECEIVE_DATA, payload: response })
} catch(err) {
  dispatch({type: Actions.FETCH_DATA_ERROR, payload: err})
}