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How to implement jump page in golang

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Release： 2023-04-11 10:18:43

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Go language (Golang) is a programming language used by people to write high-performance network applications. When developing Golang applications, you often need to jump to pages. This article will discuss how to implement page jumps in Golang applications.

First, we need to understand the HTTP handler in Golang. HTTP handler is one of the standard libraries in Golang for handling HTTP requests and responses. In the HTTP handler, we can create an HTTP server and handle HTTP requests.

There are usually two ways to implement page jumps in Golang. The first method is to use HTTP redirects. A redirect is an HTTP status code used to redirect the client to another URL. In Golang, we can use the http.Redirect function to implement redirection. Here is a simple example:

package main

import (
     "net/http"
)

func main() {
     http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
          http.Redirect(w, r, "/home", http.StatusSeeOther)
     })

     http.HandleFunc("/home", func(w http.ResponseWriter, r *http.Request) {
          w.Write([]byte("这是主页"))
     })

     http.ListenAndServe(":8080", nil)
}

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In the above example, we have defined two handler functions. The first handler function handles the request for the root URL and redirects it to the /home URL using the http.Redirect function. The second handler function handles the request for the /home URL and returns the "This is the home page" text.

In addition to redirection, we can also use a simple HTML page to jump to the page. In Golang, we can use the http.ServeFile function to emit files from disk on the server. We can save the HTML file on the server and use the http.HandleFunc function to handle the URL request. Let’s look at the following example:

package main

import (
     "net/http"
)

func main() {
     http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
          http.ServeFile(w, r, "index.html")
     })

     http.ListenAndServe(":8080", nil)
}

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In the above example, we have defined a handler function to handle requests for the root URL. This handler function uses the http.ServeFile function to emit the index.html file from disk on the server. Note that in this example we assume that our index.html file has been saved in the same directory as our Go program.

In this example, the index.html file might look like this:

<html>
<head>
    <title>Page Redirect</title>
</head>
<body>
    <h1>重定向中...</h1>
    <script type="text/javascript">
        window.location = "https://www.example.com/home";
    </script>
</body>
</html>

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In the above HTML file, we use the JavaScript window.location property to redirect the user to where we want The URL it visits. In our example, we are redirecting the user to our /home URL.

Summary:

In this article, we introduced the method of page jump through HTTP redirection and HTML page. Both of these methods are common page jump methods in Golang applications. While HTTP redirects are useful for building lightweight redirects, using HTML page redirects allows you to have more granular control over the URL to which users are redirected.

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