package main import ( "github.com/gin-gonic/gin" "net/http" ) func main() { r := gin.Default() // POST handler for "/users" endpoint r.POST("/users", func(c *gin.Context) { // Parse request body into a struct var user struct { Name string `json:"name"` } if err := c.ShouldBindJSON(&user); err != nil { c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid request payload"}) return } // Create user in database // ... // Return response c.JSON(http.StatusOK, gin.H{"message": "User created successfully"}) }) r.Run(":8080") }In this example, we define a route handler for the "/users" endpoint, which expects a JSON payload with a "name" field. We use the `ShouldBindJSON()` function to parse the request body into a struct, and validate it using an `if` statement. If the payload is invalid, we return an error response with a JSON payload. If the payload is valid, we can create a user in the database (not shown), and return a success response with a JSON payload. This code example demonstrates the use of the gin-gonic/gin package library to handle HTTP POST requests in a Go web application.