http interceptor angular

When communicating with some backend APIs, the data travels over the network using the HTTP protocol. As such, failures may occur, is it on our own device (i.e. the browser) or on the server-side which could not be available O R Unable to process our request. We need to handle such error responses and give the user a proper feedback.Import {Httperrorresponset} from ' @angular/common/

1. Default angular request header: Here, accept and X-requested-with are the default configurations of $ HTTP. 2. Modify the default request header: (1) Global modification (entire module) Use $ httpprovider dependency VaR MyApp = Angular. module ('myapp', []); MyApp. config (function ($ httpprovider) {console. log ($ httpprovider. defaults. headers. common) //

object or promise. The response object includes the request configuration (requests configuration), header (headers), status, and data from the background. If an invalid response object is returned or the promise is rejected, the $http call fails. Block request exceptions by implementing the Requesterror method: Sometimes a request fails or is rejected by the interceptor. Requesting an exception

Quick learning of AngularJs HTTP Response interceptor and quick learning of angularjs At any time, if we want to add global functions for the request, such as identity authentication and error handling, we can intercept the request before it is sent to the server or when the server returns it, is a good means of implementation. AngularJs provides a global approach for processing through the

$httpAngularJS $http Service allows us to communicate with the background by sending HTTP requests. In some cases, we want to be able to capture all requests and operate before sending them to the server. In other cases, we want to capture the response and process it before the completion call is complete. A good example is handling global HTTP exceptions. Interc

conversionStatus:http Response Status CodeHeaders: Header informationConfig: The setting object that generated the original requestStatustext:http text of the response statusInterception deviceAngular through interceptors we can intercept requests and responses from a global level.Before using interceptors, we declare a service through factory () and then register the interceptor via $httpprovider. Interceptors are divided into four types, two succes

: String, response type. Can be Arraybuffer, Blob,document,json, text, Moz-blob, Moz-chunked-text, Moz-chunked-arraybuffer$http the requested Response objectAngular the response object passed to the then method includes the following propertiesData: The response body after conversionStatus:http Response Status CodeHeaders: Header informationConfig: The setting object that generated the original requestStatustext:http text of the response statusInterce

rejected by the interceptor, the request exception interceptor captures the request that was interrupted by the last request interceptor. It can be used to recover requests or sometimes to undo the configuration that was made prior to the request, such as closing the progress bar, activating the button and the input box, and so on. Implement response method to

In angular, we can make Ajax requests very conveniently. We just need to inject $http, make an AJAX request – and then we can get a promise object and make it easy to call the success or the error method. For example, the following code: $http. Get ('/foo/bar ' + itemId) . Success (function (data) { data;//{foo: ' Bar '} })

$http ServicesThe angular built-in $http service simply encapsulates the native XMLHttpRequest object of the browser and can communicate directly with the outside.The $http service can accept only one parameter, which is an object that mainly contains the configuration content of some

. $http. Head (URL string, config Optional configuration-object type) returns the Httppromise object4, $http. Jsonp (url string, config Optional configuration-object type) return Httppromise object5. $http. Post (URL string, data object or String, config optional configuration-object type) returns the Httppromise object6. $ht