How to build a web application and implement WebUI in Go-Golang-php.cn

How to build a web application and implement WebUI in Go

PHPz

Release： 2023-04-11 09:45:40

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In modern software development, Web applications have become a major development method. In the past few decades, people have written many web-based applications, and many web frameworks and development languages have been produced for this purpose, including the Golang language. Golang is an emerging programming language that has received widespread attention and application in the field of web development in recent years. This article will introduce how to use Golang to build web applications and implement WebUI.

1. Introduction to Golang’s Web Framework

In Golang, there are many Web frameworks to choose from. Common ones include gin, beego, echo, etc. These frameworks provide many functions required for web development, such as routing, middleware, request handling, responses, etc. Among them, the gin framework is very popular because it is efficient, easy to use, and flexible. In this article, we will use the gin framework as the core of our web application.

2. Create a Web Application

In order to create a Web application, we need to first install the Golang and gin framework. Please refer to the official documentation for installation methods. After the installation is complete, we can create a simple web application using the following command:

package main

import "github.com/gin-gonic/gin"

func main() {
    r := gin.Default()
    r.GET("/", func(c *gin.Context) {
        c.String(200, "Hello, World!")
    })
    r.Run()
}

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This application creates a route that handles the root path and returns a "Hello, World!" string. Next, we can use the following command to start the application:

go run main.go

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After running, we can enter http://localhost:8080/ in the browser to access the application and see "Hello, World! "String output.

3. Implement WebUI

Golang provides the html/template package to quickly build WebUI, which allows us to build web pages using a form similar to PHP, JSP or ASP.NET. The following is a simple example showing how to implement a simple WebUI in Golang:

package main

import (
    "net/http"
    "github.com/gin-gonic/gin"
)

type User struct {
    Name string
    Age  int
}

func main() {
    r := gin.Default()
    r.GET("/", func(c *gin.Context) {
        // 创建用户对象
        user := User{"张三", 18}
        // 渲染HTML模板
        c.HTML(http.StatusOK, "index.tmpl", gin.H{
            "title": "欢迎来到 Golang",
            "user":  user,
        })
    })
    r.Run()
}

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In the above code, we define a structure named User, containing attributes Name and Age. In the route processor, we create the user object and pass it to the HTML template. An HTML template named index.tmpl can be created in the folder, which contains the following code snippet:

<!DOCTYPE html>
<html>
<head>
    <title>{{.title}}</title>
</head>
<body>
    <h1>{{.title}}</h1>
    <p>姓名：{{.user.Name}}</p>
    <p>年龄：{{.user.Age}}</p>
</body>
</html>

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This template shows us a web page titled "Welcome to Golang" and displays the user Information. After starting the program, we can enter http://localhost:8080/ in the browser to access the application and view the generated web page.

4. Summary

This article introduces how to use Golang and gin framework to build a simple Web application and implement WebUI. By using Golang's web framework, we can quickly build an efficient web application and create beautiful web pages using the html/template package. Through the introduction of this article, I believe that readers have mastered the basic methods of implementing WebUI in Golang and can use these technologies in practice.

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