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When using Golang to build a RESTful API, you can take the following steps: create routes and handle requests. Start the API. Use logging: Configure logging. Use logging in API handlers.
How to use Golang to build a RESTful API and use logging
Introduction
Building a RESTful API is a common task for Go developers. Logging is also crucial for any application. This article will guide you in building a basic RESTful API using Golang and introduce how to implement logging.
Prerequisites
Create Project
Create a new Go project:
go mod init golang-restful-api
Build API
1. Routing
Create a new filerouter.go
, which contains the route to handle the request:
package main import ( "github.com/gin-gonic/gin" ) func main() { router := gin.Default() router.GET("/ping", func(c *gin.Context) { c.JSON(200, gin.H{ "message": "pong", }) }) router.Run() }
2. Start the API
In the main
function, gin.Engine
is instantiated and a route handler is added that handles GET requests from the /ping
route. It will return message "pong"
.
Logging
1. Configure logging
Create a new filelogger.go
, which contains logging configuration:
package main import ( "log" "os" ) var logger = log.New(os.Stdout, "", 0)
2. Using logging
In the API handler, use logger
to log information:
func main() { // ... router.GET("/ping", func(c *gin.Context) { logger.Println("Received ping request") // ... }) }
Practical case
Use curl to test the API:
curl http://localhost:8080/ping
This will output the following log record:
Received ping request
Conclusion
You have learned how to build a basic RESTful API using Golang with integrated logging. By following these steps, you can build powerful and scalable APIs for your applications.
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