


Combination of golang WebSocket and JSON: realizing data transmission and parsing
Dec 17, 2023 pm 03:06 PMThe combination of golang WebSocket and JSON: realizing data transmission and parsing
In modern Web development, real-time data transmission is becoming more and more important. WebSocket is a protocol used to achieve two-way communication. Unlike the traditional HTTP request-response model, WebSocket allows the server to actively push data to the client. JSON (JavaScript Object Notation) is a lightweight format for data exchange that is concise, easy to read, and easy to parse between different programming languages.
This article will introduce how to use Golang to combine WebSocket and JSON to achieve data transmission and parsing. We will use Golang's built-in packages net/http
and github.com/gorilla/websocket
to handle WebSocket connections, and encoding/json
to parse and generate JSON data.
First, we need to install the gorilla/websocket
package. You can install it using the following command:
go get github.com/gorilla/websocket
Next, we can start writing code.
package main import ( "encoding/json" "fmt" "log" "net/http" "github.com/gorilla/websocket" ) type Message struct { Content string `json:"content"` } var upgrader = websocket.Upgrader{ ReadBufferSize: 1024, WriteBufferSize: 1024, } func echoHandler(w http.ResponseWriter, r *http.Request) { conn, err := upgrader.Upgrade(w, r, nil) if err != nil { log.Println(err) return } defer conn.Close() for { // 讀取客戶端發(fā)送的消息 _, message, err := conn.ReadMessage() if err != nil { log.Println(err) break } // 解析JSON數(shù)據(jù) var msg Message err = json.Unmarshal(message, &msg) if err != nil { log.Println(err) break } // 輸出收到的消息 fmt.Println("收到消息:", msg.Content) // 發(fā)送響應消息 response := Message{ Content: "你發(fā)送的消息是:" + msg.Content, } // 將響應轉換為JSON格式 jsonResponse, err := json.Marshal(response) if err != nil { log.Println(err) break } // 發(fā)送JSON響應 err = conn.WriteMessage(websocket.TextMessage, jsonResponse) if err != nil { log.Println(err) break } } } func main() { http.HandleFunc("/ws", echoHandler) log.Fatal(http.ListenAndServe(":8080", nil)) }
The above code contains a WebSocket processing function echoHandler
, which receives the client's WebSocket connection and processes the sending and receiving of messages. Inside the function, we first read the message sent by the client and parse it into a Message
structure. We then output the received message, generate the response message, and convert the response into JSON format. Finally, we use conn.WriteMessage
to send the JSON response to the client.
In the main function, we register the WebSocket processing function echoHandler
to the /ws
route and listen to the local 8080 port.
After compiling and running the program, open the WebSocket connection in the browser, and you can send and receive JSON data through JavaScript's WebSocket object. The following is a simple JavaScript code example:
var socket = new WebSocket("ws://localhost:8080/ws"); socket.onopen = function () { console.log('連接已打開'); var message = { content: 'Hello Server!' }; socket.send(JSON.stringify(message)); }; socket.onmessage = function (event) { console.log('收到服務器的響應:', JSON.parse(event.data)); socket.close(); }; socket.onclose = function () { console.log('連接已關閉'); };
In the above JavaScript code, we create a WebSocket connection and send a JSON data containing the message content when the connection is opened. When the response from the server is received, we parse and print the response message, and close the WebSocket connection.
The above are some sample codes that use Golang to combine WebSocket and JSON to realize data transmission and parsing. By using WebSocket and JSON, we can easily transfer and parse structured data between clients and servers, enabling real-time data interaction. When writing code that works for your specific use case, remember to include necessary error handling and data validation. Hope this article helps you!
The above is the detailed content of Combination of golang WebSocket and JSON: realizing data transmission and parsing. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undress AI Tool
Undress images for free

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Golang is better than C in concurrency, while C is better than Golang in raw speed. 1) Golang achieves efficient concurrency through goroutine and channel, which is suitable for handling a large number of concurrent tasks. 2)C Through compiler optimization and standard library, it provides high performance close to hardware, suitable for applications that require extreme optimization.

Golang is suitable for rapid development and concurrent scenarios, and C is suitable for scenarios where extreme performance and low-level control are required. 1) Golang improves performance through garbage collection and concurrency mechanisms, and is suitable for high-concurrency Web service development. 2) C achieves the ultimate performance through manual memory management and compiler optimization, and is suitable for embedded system development.

Which libraries in Go are developed by large companies or well-known open source projects? When programming in Go, developers often encounter some common needs, ...

Golang is better than Python in terms of performance and scalability. 1) Golang's compilation-type characteristics and efficient concurrency model make it perform well in high concurrency scenarios. 2) Python, as an interpreted language, executes slowly, but can optimize performance through tools such as Cython.

Go language performs well in building efficient and scalable systems. Its advantages include: 1. High performance: compiled into machine code, fast running speed; 2. Concurrent programming: simplify multitasking through goroutines and channels; 3. Simplicity: concise syntax, reducing learning and maintenance costs; 4. Cross-platform: supports cross-platform compilation, easy deployment.

Golang and Python each have their own advantages: Golang is suitable for high performance and concurrent programming, while Python is suitable for data science and web development. Golang is known for its concurrency model and efficient performance, while Python is known for its concise syntax and rich library ecosystem.

Goimpactsdevelopmentpositivelythroughspeed,efficiency,andsimplicity.1)Speed:Gocompilesquicklyandrunsefficiently,idealforlargeprojects.2)Efficiency:Itscomprehensivestandardlibraryreducesexternaldependencies,enhancingdevelopmentefficiency.3)Simplicity:

C is more suitable for scenarios where direct control of hardware resources and high performance optimization is required, while Golang is more suitable for scenarios where rapid development and high concurrency processing are required. 1.C's advantage lies in its close to hardware characteristics and high optimization capabilities, which are suitable for high-performance needs such as game development. 2.Golang's advantage lies in its concise syntax and natural concurrency support, which is suitable for high concurrency service development.
