Cross-domain issues in Ajax requests and their solutions

Cross-domain issues Cross-domain refers to requesting the resources of another domain name from a web page of one domain name, such as currently requesting the JD server (https://www.jd.com) on the Baidu page (https://baidu.com) Resources Traditional requests will not cross domains On the a site, you can submit it through hyperlink or form form or window.location.href […]

High-performance network request framework OKHTTP

OkHttp is an open source HTTP client library for making network requests and handling responses in Java and Kotlin applications. Developed by Square, it provides a simple, efficient and easy-to-use API. Supports HTTP/2 and SPDY: OkHttp supports the latest HTTP protocol versions, including HTTP/2 and SPDY, to provide faster and more efficient network communication. Connection […]

SpringBoot and Axios asynchronous network request library implement file download (too damn pitfalls)

Preparation: Import the maven jar package <dependency> <groupId>org.webjars.npm</groupId> <artifactId>axios</artifactId> <version>1.5.1</version> </dependency> Step 1: Write the front-end page <!doctype html> <html lang=”en”> <head> <meta charset=”UTF-8″> <meta name=”viewport” content=”width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0″> <meta http-equiv=”X-UA-Compatible” content=”ie=edge”> <title>Download Center</title> <style> .txt { color: green; } </style> </head> <body> <div id=”app”> <h1>Download Center</h1> <ol> <li><span class=”txt”>WeChat Mini Program Project</span> […]

Project practice: component scanning (4) – filtering bean instances with RequestMapping annotations

1. ControllerDefinition package com.csdn.mymvc.core; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import java.lang.reflect.Method; import java.util.HashMap; import java.util.Map; //Suppose there is a uri:/fruit/index @Data @NoArgsConstructor @AllArgsConstructor public class ControllerDefinition { private String requestMapping; private Object controllerBean; private Map<String, Method> methodMappingMap = new HashMap<>(); } 2. ComponentScan package com.csdn.mymvc.core; import com.csdn.mymvc.annotation.*; import java.io.File; import java.lang.annotation.Annotation; import java.lang.reflect.Field; import […]

iOS in-app packet capture, NSURLProtocol intercepts network requests within APP

Foreword When developing, you need to obtain data in the SDK. Since you cannot see the code, you can only monitor all network request data and intercept the corresponding return data. This can be achieved through NSURLProtocol, and can also be used to interact with H5. 1. NSURLProtocol intercepts requests 1. Introduction to NSURLProtoco Official […]

The interface post requests to upload files, the files are posted in the form of a stream, and the interface receives the file stream.

import com.alibaba.fastjson.JSONObject; import org.apache.commons.lang3.StringUtils; import org.apache.http.HttpEntity; import org.apache.http.NameValuePair; import org.apache.http.ParseException; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.utils.URIBuilder; import org.apache.http.entity.ContentType; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.message.BasicNameValuePair; import org.apache.http.util.EntityUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.mock.web.MockMultipartFile; import org.springframework.web.multipart.MultipartFile; import javax.imageio.ImageIO; import javax.imageio.ImageReader; import javax.imageio.stream.ImageInputStream; import java.io.*; import java.net.HttpURLConnection; import java.net.URISyntaxException; import java.net.URL; import java.net.URLEncoder; import java.util.*; public […]

Rotation animation, requestAnimationFrame periodic rendering

The development of online games, product displays, and indoor roaming based on WebGL technology often involves animation. 1. Periodic rendering In order to achieve periodic rendering, you can use a method setInterval() of the browser global object window object. You can call this method window.setInterval(), you can also call setInterval() directly in function form. setInterval() […]

Various ways to send http requests in java

Native java sends http request package com.cyz; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.URL; import java.net.URLConnection; import java.util.List; import java.util.Map; /** * @author cyz * @since 2023/11/8 9:50 */ public class CustHttp { public static String post(String targetUrl, String params) throws IOException { URL url = new URL(targetUrl); PrintWriter out = null; […]

How does Node.js handle multiple requests?

Foreword In the field of computer science, the concepts of concurrency and parallelism are often mentioned. However, these two terms are often conflated, leading to a lot of confusion among many people about their understanding. The editor of this article will help readers better understand their different characteristics and application scenarios through an in-depth analysis […]