Go Json数据处理_weixin_34294649的博客

// Json1 project main.go
package main

import (
	"encoding/json"
	"fmt"
	"os"
)

type response1 struct {
	Page int
	Data []string
}

type response2 struct {
	Page int      `json:"page"`
	Data []string `json:"Name"`
}

func main() {
	testBool, _ := json.Marshal(true)
	fmt.Println("json testBool = ", string(testBool))

	testInt, _ := json.Marshal(1)
	fmt.Println("json testBool = ", string(testInt))

	testFlot, _ := json.Marshal(1.22)
	fmt.Println("json testFlot = ", string(testFlot))

	testString, _ := json.Marshal("Here are some examples for atomic values")
	fmt.Println("json testFlot = ", string(testString))

	stestData := []string{"xml", "json", "protobuf"}
	testSlice, _ := json.Marshal(stestData)
	fmt.Println("json testSlice = ", string(testSlice))

	mapData := map[string]int{"xml": 1, "json": 2, "protobuf": 3}
	testMap, _ := json.Marshal(mapData)
	fmt.Println("json testMap = ", string(testMap))

	testStruct1Data := &response1{
		Page: 1,
		Data: []string{"C", "C#", "CPP", "JAVA", "PHP", "GO"}}

	testStruct1, _ := json.Marshal(testStruct1Data)
	fmt.Println("json testStruct1 = ", string(testStruct1))

	testStruct2Data := &response2{
		Page: 1,
		Data: []string{"C", "C#", "CPP", "JAVA", "PHP", "GO"}}

	testStruct2, _ := json.Marshal(testStruct2Data)
	fmt.Println("json testStruct2 = ", string(testStruct2))

	myTestJsonData := []byte(`{"fdata":12.34, "strData":["Json","XML","Protobuf"]}`)
	var data map[string]interface{}

	err := json.Unmarshal(myTestJsonData, &data)
	if err != nil {
		fmt.Println("json.Unmarshal error: ", err.Error())
		os.Exit(-1)
	}

	fmt.Println(data)

	fnum := data["fdata"].(float64)
	fmt.Println("fnum = ", fnum)

	strData := data["strData"].([]interface{})
	fmt.Println("len(strData) = ", len(strData))
	fmt.Println("strData = ", strData)
	for i := 0; i < len(strData); i++ {
		fmt.Println("strData[", i, "] = ", strData[i].(string))
	}

	strJsonData := `{"page":1,"Name":["C","C#","CPP","JAVA","PHP","GO"]}`
	rsp2 := response2{}
	json.Unmarshal([]byte(strJsonData), &rsp2)
	fmt.Println("rsp2 = ", rsp2)
	fmt.Println("rsp2.Page = ", rsp2.Page)
	fmt.Println("rsp2.Data = ", rsp2.Data)
	for i := 0; i < len(rsp2.Data); i++ {
		fmt.Println("rsp2.Data[", i, "] = ", rsp2.Data[i])
	}

	enc := json.NewEncoder(os.Stdout)
	d := map[string]int{"Go": 50, "C": 60, "CPP": 70, "JAVA": 80, "PHP": 90, "C#": 100}
	enc.Encode(d)
	enc.Encode(rsp2)

	os.Exit(0)
}
// Json