Json

16-Json/examples/marshal.go

@@ -0,0 +1,46 @@
+package examples
+
+import "encoding/json"
+
+type Person struct {
+	Name   string `json:"name"`
+	Family string `json:"family"`
+	Age    int    `json:"age,omitempty"`
+}
+
+func MarshalExample1() {
+	person1 := Person{Name: "Ali", Family: "Rezaee", Age: 17}
+	person2 := Person{Name: "Milad", Family: "Mohammadi", Age: 20}
+	person3 := Person{Name: "Peyman", Family: "Mohammadi", Age: 0}
+
+	person1Json, err := json.Marshal(person1)
+	if err != nil {
+		panic(err)
+	}
+	person2Json, err := json.Marshal(person2)
+	if err != nil {
+		panic(err)
+	}
+	person3Json, err := json.Marshal(person3)
+	if err != nil {
+		panic(err)
+	}
+
+	println(string(person1Json))
+	println(string(person2Json))
+	println(string(person3Json))
+}
+
+func MarshalExample2() {
+	person1 := Person{Name: "Ali", Family: "Rezaee", Age: 17}
+	person2 := Person{Name: "Milad", Family: "Mohammadi", Age: 20}
+	person3 := Person{Name: "Peyman", Family: "Mohammadi", Age: 0}
+
+	persons := []Person{person1, person2, person3}
+	personsJson, err := json.Marshal(persons)
+	if err != nil {
+		panic(err)
+	}
+
+	println(string(personsJson))
+}

16-Json/examples/unMarshal.go

@@ -0,0 +1,34 @@
+package examples
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+func UnmarshalExample1() {
+	person1Json := []byte(`{"name":"Ali","family":"Rezaee","age":17}`)
+
+	var person1 = Person{}
+	err := json.Unmarshal(person1Json, &person1)
+
+	if err != nil {
+		panic(err)
+	}
+
+	println(person1.Name)
+	println(person1.Family)
+	println(person1.Age)
+}
+
+func UnmarshalExample2() {
+	personsJson := []byte(`[{"name":"Ali","family":"Rezaee","age":17},{"name":"Milad","family":"Mohammadi","age":20},{"name":"Peyman","family":"Mohammadi"}]`)
+
+	var persons = []Person{}
+	err := json.Unmarshal(personsJson, &persons)
+
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("%+v", persons)
+}

16-Json/examples/unMarshalFromApi.go

@@ -0,0 +1,76 @@
+package examples
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"time"
+)
+
+type BookingLocation struct {
+	Country   string `json:"country"`
+	State     string `json:"state"`
+	StateName string `json:"stateName"`
+	ZipCode   string `json:"zipcode"`
+	Timezone  string `json:"timezone"`
+	Latitude  string `json:"latitude"`
+	Longitude string `json:"longitude"`
+	City      string `json:"city"`
+	Continent string `json:"continent"`
+}
+
+func UnmarshalExample3() {
+	response := make(chan []byte)
+	go GetResponse(response, "https://geolocation.onetrust.com/cookieconsentpub/v1/geo/location")
+
+	var location = BookingLocation{}
+	err := json.Unmarshal(<-response, &location)
+
+	if err != nil {
+		panic(err)
+	}
+
+	println(location.City)
+	println(location.Country)
+	println(location.StateName)
+}
+
+func GetResponse(content chan<- []byte, url string) {
+
+	client := http.Client{}
+
+	request, err := http.NewRequest("GET", url, nil)
+
+	if err != nil {
+		panic(err)
+	}
+
+	request.Header = http.Header{}
+
+	request.Header.Add("accept", "application/json")
+
+	response, err := client.Do(request)
+
+	if err != nil {
+		panic(err)
+	}
+
+	defer response.Body.Close()
+
+	responseBody, err := ioutil.ReadAll(response.Body)
+
+	if err != nil {
+		panic(err)
+	}
+
+	PrintlnWithTime(string(responseBody))
+	PrintlnWithTime("Before set content")
+	content <- responseBody
+	PrintlnWithTime("After set content")
+
+}
+
+func PrintlnWithTime(args ...any) {
+	fmt.Printf("Time: %s, %v\n", time.Now().Format(time.RFC3339Nano), args)
+}

16-Json/go.mod

@@ -0,0 +1,3 @@
+module jsonExamples
+
+go 1.18

16-Json/main.go

@@ -0,0 +1,11 @@
+package main
+
+import "jsonExamples/examples"
+
+func main() {
+	// examples.MarshalExample1()
+	// examples.MarshalExample2()
+	// examples.UnmarshalExample1()
+	// examples.UnmarshalExample2()
+	examples.UnmarshalExample3()
+}