Axios处理错误

我试图用Axios更好地理解javascript承诺。我假装处理request .js中的所有错误，并且只从任何地方调用请求函数，而不必使用catch()。

在本例中，对请求的响应将是400，并带有一个JSON格式的错误消息。

这是我得到的错误:

错误:请求失败，状态码为400

我找到的唯一解决方案是在Somewhere.js中添加.catch(() =>{})，但我试图避免这样做。这可能吗?

代码如下:

Request.js

export function request(method, uri, body, headers) {
  let config = {
    method: method.toLowerCase(),
    url: uri,
    baseURL: API_URL,
    headers: { 'Authorization': 'Bearer ' + getToken() },
    validateStatus: function (status) {
      return status >= 200 && status < 400
    }
  }

  ...

  return axios(config).then(
    function (response) {
      return response.data
    }
  ).catch(
    function (error) {
      console.log('Show error notification!')
      return Promise.reject(error)
    }
  )
}

Somewhere.js

export default class Somewhere extends React.Component {

  ...

  callSomeRequest() {
    request('DELETE', '/some/request').then(
      () => {
        console.log('Request successful!')
      }
    )
  }

  ...

}

当前回答

可重用性:

创建一个文件errorHandler.js:

export const errorHandler = (error) => {
  const { request, response } = error;
  if (response) {
    const { message } = response.data;
    const status = response.status;
    return {
      message,
      status,
    };
  } else if (request) {
    //request sent but no response received
    return {
      message: "server time out",
      status: 503,
    };
  } else {
    // Something happened in setting up the request that triggered an Error
    return { message: "opps! something went wrong while setting up request" };
  }
};

然后，每当您捕捉到axios的错误时:

Just import error handler from errorHandler.js and use like this.
  try {
    //your API calls 
  } catch (error) {
    const { message: errorMessage } = errorHandlerForAction(error);
     //grab message
  }

2022-01-12 15:51:52

其他回答

如果你想要访问整个错误体，请按照下面所示进行:

 async function login(reqBody) {
  try {
    let res = await Axios({
      method: 'post',
      url: 'https://myApi.com/path/to/endpoint',
      data: reqBody
    });

    let data = res.data;
    return data;
  } catch (error) {
    console.log(error.response); // this is the main part. Use the response property from the error object

    return error.response;
  }

}

2020-03-24 05:22:52

如果你不想使用异步等待尝试

export const post = async ( link,data ) => {
const option = {
    method: 'post',
    url: `${URL}${link}`,
    validateStatus: function (status) {
        return status >= 200 && status < 300; // default
      },
    data
};

try {
    const response = await axios(option);
} catch (error) {
    const { response } = error;
    const { request, ...errorObject } = response; // take everything but 'request'
    console.log(errorObject);
}

2019-10-16 15:59:10

如果我理解正确的话，您需要某种全局处理程序，这样就不必为所发出的每个请求附加一个catch处理程序。有一个窗口事件叫做unhandledrejection。

您可以在官方文档中阅读有关此事件的更多信息:https://developer.mozilla.org/en-US/docs/Web/API/Window/unhandledrejection_event

下面是如何为这个事件附加一个监听器:

window.addEventListener('unhandledrejection', (event) => {
  // Handle errors here...
});

2022-12-01 09:15:13

如果我理解正确的话，您希望只有在请求成功时才调用请求函数，并且希望忽略错误。为此，您可以创建一个新的承诺，在axios请求成功时解决它，并且在失败时绝不拒绝它。

更新后的代码看起来像这样:

export function request(method, uri, body, headers) {
  let config = {
    method: method.toLowerCase(),
    url: uri,
    baseURL: API_URL,
    headers: { 'Authorization': 'Bearer ' + getToken() },
    validateStatus: function (status) {
      return status >= 200 && status < 400
    }
  }


  return new Promise(function(resolve, reject) {
    axios(config).then(
      function (response) {
        resolve(response.data)
      }
    ).catch(
      function (error) {
        console.log('Show error notification!')
      }
    )
  });

}

2021-02-10 22:19:51

https://stackabuse.com/handling-errors-with-axios/

    let res = await axios.get('/my-api-route');

    // Work with the response...
} catch (err) {
    if (err.response) {
        // The client was given an error response (5xx, 4xx)
    } else if (err.request) {
        // The client never received a response, and the request was never left
    } else {
        // Anything else
    }
}

try {
    let res = await axios.get('/my-api-route');

    // Work with the response...
} catch (err) {
    if (err.response) {
        // The client was given an error response (5xx, 4xx)
    } else if (err.request) {
        // The client never received a response, and the request was never left
        console.log(err.request);
    } else {
        // Anything else
    }
}

2022-06-06 07:50:36

Axios处理错误

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