This repository records some skills about Go programming.
This project describes how to read a yaml file and print it to screen.
- Package need to import:
io/ioutilgopkg.in/yaml.v2
- Read yaml file:
conf, err := ioutil.ReadFile("conf.yaml")
- Convert yaml data to struct:
err = yaml.Unmarshal(conf, &c)
where c is a struct object that defined according to the format of yaml data by us. Suppose yaml data is
person:
name: 'Flower'
age: '25'
then our struct must define as
type Conf struct {
Person struct {
Name string `yaml:"name"`
Age string `yaml:"age"`
}
}HttpRouter is a lightweight high performance HTTP request router (also called multiplexer or just mux for short) for Go.
go get github.com/julienschmidt/httprouterCreate a new httprouter object with New function, and we can create request methods like GET, POST and so on. Let's see an example:
router := httprouter.New()
router.GET("/get/:requestid", controller.GetTaskProcess)
router.POST("/post/:requestid", controller.PostTaskProcess)
...then writing methods GetTaskProcess and PostTaskProcess with a simple response respectively:
func GetTaskProcess(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
fmt.Fprintf(w, "hello, %s!\n", ps.ByName("requestid"))
}
func PostTaskProcess(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
body, err := ioutil.ReadAll(r.Body)
if err != nil {
fmt.Fprint(w, "hello, something wrong happened for sending message to %s!\n", ps.ByName("requestid"))
} else {
fmt.Fprint(w, "Your enter is %s\n", []byte(body))
}
}At last, we use curl to test this project:
curl -XGET localhost:8002/get/world
curl -XPOST localhost:8002/post/hello
then we can get hello, world! and Your enter is hello on the screen respectively.
The fantastic ORM library for Golang, aims to be developer friendly.
go get -u github.com/jinzhu/gormDitail operations can be found here.
Here, taking the gosexy redis for example, to introduce how to use redis in golang.
- redis
wget http://download.redis.io/releases/redis-2.8.3.tar.gz
tar xzf redis-2.8.3.tar.gz
cd redis-2.8.3
make
./redis-server- redis client
go get menteslibres.net/gosexy/redisthen import redis with
import "menteslibres.net/gosexy/redis"- usage
var client *redis.Client
client = redis.New()
err = client.Connect(host, port)
if err != nil {
log.Fatalf("Connect failed: %s\n", err.Error())
return
}
log.Println("Connected to redis-server.")
log.Printf("Sending PING...\n")
s, err = client.Ping()
if err != nil {
log.Fatalf("Could not ping: %s\n", err.Error())
return
}
log.Printf("Received %s!\n", s)
client.Quit()REST (Representational State Transfer) is a uniform way of locating resources on the internet that goes beyond the boundaries of programming languages, more information about this project can be found here.
