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API Integration

Axios​

https://github.com/axios/axios

Set Default Headers​

This will set the content-type header for all Axios API requests made within the application.

axios.defaults.headers.put["Content-Type"] = "application/json";

Interceptor​

Example of setting up a global API error handler, specifically to catch ServiceNow session timeout errors.

I’ve added this in App.js but the interceptor could also be defined in an API base class.

// NOTE: Setting undefined for the response handler allows all other response handlers to behave normally.

axios.interceptors.responses.use(
  undefined,
  (error) => {
    if (error && error.response && error.response.status === 401) {
      // This is a session timeout error.
      // Take special action to handle the error such as opening a dialog to display the error message;
    }
    
    console.error(error);
    
    // Return a rejected promise so individual error handlers will execute as expected.
    return Promise.reject(error);
  }
);