How do I Serve Static Files with a Gin Router?

Serving Static Files with Gin Router

In Gin, serving static files such as JSON can be achieved through dedicated routes, eliminating the need to build a complex file-serving system from scratch.

Consider the given application structure and code in the question. The HTML file accesses a JSON file using JavaScript, but an error occurs when attempting to access it. To resolve this, define a specific route for the JSON file in the main.go file:

<code class="go">func main() {
    router = gin.Default()
    router.LoadHTMLGlob("templates/*")

    router.GET("/web", func(c *gin.Context) {
        c.HTML(http.StatusOK, "index.html", gin.H{
            "title": "Web",
            "url":   "/web.json", // Change here to use the newly defined static file route
        })
    })

    // Add a route for the JSON file
    router.StaticFile("/web.json", "templates/web.json") // Add this line

    router.Run()
}</code>

Now, Gin will serve the JSON file through the "/web.json" route. Remember to include the appropriate HTML tags in your index.html file to display and access the JSON file in JavaScript:

<code class="html">...
&lt;script&gt;
  window.onload = function() {
    // Begin Swagger UI call region
    const ui = SwaggerUIBundle({
      url: "/web.json", // Use the static file route here
      dom_id: '#swagger-ui',
      // ...
    })
    // End Swagger UI call region

    window.ui = ui
  }
&lt;/script&gt;
...</code>

By following these steps, you can effectively serve static files within your Gin router, allowing your application to access the necessary data and functionality.

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