Ajax sends json format data and sends files (FormData) and its own serialization component: serializers

Encoding format (contentType) of front and rear end transmission data get request data is directly placed in the url? hinder url?usernmae=junjie&password=123... How post requests can be sent to the backend form request ajax request Coding format of front and rear transmission data urlencoded formdata json Research form: the default dat ...

Posted by max101 on Sun, 06 Mar 2022 15:56:31 +0100

Ajax what is Ajax? The basic syntax of Ajax

Ajax What is Ajax? AJAX (Asynchronous Javascript And XML) is translated into Chinese as "Asynchronous Javascript And XML". That is, use Javascript language to interact asynchronously with the server, and the transmitted data is XML (of course, the transmitted data is not only XML, but now more json data is used). Synchronous interact ...

Posted by bmarinho on Sun, 06 Mar 2022 15:13:08 +0100

Give you three different ways to implement GET and POST requests

Article catalogue catalogue Article catalogue preface 1. Ajax in jQuery 1.1,$.get() 1.2,$.post()  1.3,$.ajax()  2. XMLHttpRequest mode 2.1. Initiate GET request 2.2. Initiate POST request 3,Axios 3.1. Initiate GET request 3.2. Initiate POST request summary preface It's a new beginning. After a happy holiday, I began to invest in th ...

Posted by waradmin on Fri, 04 Mar 2022 10:00:06 +0100

Online Chat--Introduction and Realization of WebSocket

Before HTML5, browsers and servers communicated through the HTTP protocol, so what's the use of introducing a WebSocket? Imagine a web page broadcasting a score of a football match live in text. Without a WebSocket, the client, or browser, usually updates the score dynamically in two ways: AJAX and long polling. What is the difference between ...

Posted by phwae on Mon, 28 Feb 2022 18:41:14 +0100

WEB application development -- Part learning of spring MVC -- preliminary realization of spring MVC file upload function

Function construction and sorting 1. Import jar package 2. Add file parser 3. Successfully set up the login success interface 4. Jump to the add interface through the "add Avatar" function of the interface 5 add the necessary Ajax file upload JS component 6. Realize the upload function and deploy the local gallery to the Tom ...

Posted by saeed_violinist on Mon, 28 Feb 2022 12:10:25 +0100

06_ 03_ Spring MVC task 2: advanced spring MVC (ajax asynchronous interaction, RESTful programming style, file upload, exception handling, interceptor)

Task 2: Spring MVC advanced Main contents of course tasks: ajax asynchronous interactionRESTfulFile uploadexception handlingInterceptor An ajax asynchronous interaction By default, spring MVC uses MappingJackson2HttpMessageConverter to convert json data, which needs to be added to jackson's package; Use < MVC: annotation driven / &g ...

Posted by ipwnzphp on Sun, 27 Feb 2022 05:15:03 +0100

Encapsulation of native ajax requests

Encapsulation of native ajax requests The native ajax request is divided into four steps: 1. Create request object Determine browser compatibility issues ie browser: window ActiveXObject Common browser: window XMLHttpRequest if (window.XMLHttpRequest) { var xhr = new XMLHttpRequest(); } else if (window.ActiveXObject) { ...

Posted by Coronet on Sat, 26 Feb 2022 09:54:06 +0100

The 8th meeting of django framework

The 8th meeting of django framework Introduction to AJAX AJAX (Asynchronous Javascript And XML) is translated into Chinese as "Asynchronous Javascript And XML". That is, use Javascript language to interact asynchronously with the server, and the transmitted data is XML (of course, the transmitted data is not just XML). AJAX ...

Posted by DirtySnipe on Sat, 26 Feb 2022 05:46:45 +0100

Explain the data interaction between the front and back of Ajax springboot in detail

Explain the data interaction between the front and back of Ajax springboot in detail 1. Ajax overview The full English name of Ajax is "Asynchronous JavaScript and XML", namely "Asynchronous JavaScript and XML". Its core is to send data requests to the server in an asynchronous way through the XMLHttpRequest object of Java ...

Posted by fothers on Thu, 24 Feb 2022 15:39:17 +0100

Java crawler crawls Jingdong Mall

1, Task: The purpose is to extract various commodity information in the network by using java crawler, establish a unified data model to store data, and describe the basic attributes of commodities through the data model. Such as spu, sku, product description, price and other information. At the same time, it is necessary to eliminate unnecess ...

Posted by -Karl- on Wed, 23 Feb 2022 17:33:41 +0100