XMLHttpRequest intercepts requests and responses

Environment: angular Implementation: Interception of requests and adding fields to request information Intercept response and filter return value Response interception: According to the XMLHttpRequest used by angular, the original request will be transferred to another XML that will listen to the return event and send the request in another century Use get set to return […]

1.15.C++ project: Design of HttpRequest and HttpResponse modules that imitate muduo library to implement concurrent server

Article directory 1. HttpRequest module 2. HttpResponse module 3. Realize ideas (1) Function (2) Meaning 4. Code 1. HttpRequest module 2. HttpResponse module 3. Implement ideas (1) Function HttpRequest module Store HTTP request information Receive a piece of data, parse it according to the HTTP request format, and get each key element and put it […]

5.Python-Use the XMLHttpRequest object to send Ajax requests

Inscription Use the XMLHttpRequest object to send Ajax requests. The following is a simple example and operation process. Install flask module pip install flask Install the mysql.connector module pip install mysql-connector-python Write app.py file The app.py file is as follows: from flask import Flask, request, render_template import mysql.connector app = Flask(__name__) # Connect to MySQL […]

Interface tool HttpRequestUtilObjectToMapUtil

HttpRequestUtil import cn.hutool.http.HttpRequest; import net.sf.json.JSONObject; import java.util.HashMap; import java.util.Map; public final class HttpRequestUtil { public final static String get(String url,Map<String,String> header,Map<String,Object> param){ return request(RequestTypeEnum.GET,url,header,param); } public final static String post(String url,Map<String,String> header,Map<String,Object> param){ return request(RequestTypeEnum.POST,url,header,param); } public final static String request(RequestTypeEnum typeEnum, String url, Map<String,String> header,Map<String,Object> param){ String result = “”; HttpRequest request = null; […]

Django view-HttpRequest request object and HttpResponse response object

Article directory HttpRequest HttpResponse practice Properties and methods of the request object response def index(request): This request is actually an internally encapsulated Http request HttpRequest, which is a request object Views in Django are mainly used to accept and respond to web requests. The essence of a view is a function in Python View responses […]

AJAX —- 3 XMLHttpRequest ◆ Promise

XMLHttpRequest Definition: XMLHttpRequest object is used for server interaction. Through XMLHttpRequest, you can request a specific URL and obtain data without refreshing the page. Relationship: Axios internally uses XMLHttpRequest to interact with the server step: 1. Create XMLHttpRequest object 2. Configure the request method and request url address 3. Listen to the loadend event and […]

[Imitation Tomact of imitation framework] 4. Encapsulate HttpRequest object (attribute mapping http request message), HttpResponse object (attribute mapping http response message)

Article directory 1. Create HttpRequest object 2. Create HttpResponse object 1. Create HttpRequest object The attributes in the HttpRequest object correspond to the content in the HTTP protocol, and are used for subsequent servlets to obtain the parameters in the request from the request. Refer to the http request message: import java.io.BufferedReader; import java.io.IOException; import […]

Ajax_3 Ajax principle + (XMLHttpRequest + Promise) + encapsulate an axios plug-in library to realize the function.

Ajax_3 Ajax principle 01-Ajax principle-XMLHttpRequest Using XMLHttpRequest step: Create an XMLHttpRequest object Configure the request method request url URL Listen to the loadend event and accept the response result make a request Requirement: Communicate with the server using the XMLHttpRequest object Code example // 1. Create an XMLHttpRequest object const xhr = new XMLHttpRequest() // […]

Use XMLHttpRequest to realize asynchronous file download

1. Problem description I want to implement the download culture asynchronously, and the request is a post request. At first I planned to use ajax. $.ajax({ type:’post’, contentType:’application/json’, url:’http://xxx/downloadExcel’, data:{data:JSON.stringify(<%=oJsonResponse.JSONoutput()%>)}, }).success(function(data){ const blob = new Blob([data], {type: ‘application/vnd.openxmlformats- officedocument.spreadsheetml.sheet’}); const url1 = URL. createObjectURL(blob) const a = document. createElement(‘a’); a.href = url1; a.download = ‘table.xlsx’; […]

XMLHttpRequest (XHR) and fetch

XMLHttpRequest (XHR) Principle XMLHttpRequest (XHR) is a technology for asynchronous data exchange between the client and the server, which allows the browser to send an HTTP request to the server, get data and update part of the web page content without refreshing the entire page. XHR is a technology commonly used in modern web development […]