6-3读写json文件，将go数据编码为json文件

package main

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


//将于谦的信息map写入到一个json文件
func main021() {
    dataMap := make(map[string]interface{})
    dataMap["name"]= "于谦"
    dataMap["rmb"]= 123.55
    dataMap["age"]= 50
    dataMap["hobby"]= []string{"抽烟","喝酒","烫头"}

    //打开或创建目标文件
    dastFile, _ := os.OpenFile("E:/go-project/daemon/w3/于谦.json", os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0666)
    defer  dastFile.Close()

    //创建一个编码器
    encoder := json.NewEncoder(dastFile)
    err := encoder.Encode(dataMap)

    if err != nil{
        fmt.Println("编码失败，err=",err)
        return
    }
    fmt.Println("编码成功")
}


//将由结构体组成的切片写入到一个json文件
func main() {
    type Persion struct {
        Name    string
        Age        int
        Sex        bool
        Hobby    []string
        Rmb        float64
    }
    p1 := Persion{"王刚蛋", 30, false, []string{"抽中华", "喝怡宝", "烫头"}, 123.45}
    p2 := Persion{"王铁蛋", 30, false, []string{"抽玉溪", "喝农夫山泉", "烫鸡冠头"}, 123.45}
    p3 := Persion{"王铜蛋", 30, false, []string{"抽利群", "喝娃哈哈", "烫波浪"}, 123.45}

    persions := make([]Persion, 0)
    persions = append(persions, p1, p2, p3)

    dstFile, _ := os.OpenFile("E:/go-project/daemon/w3/八大姨.json", os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0666)
    defer  dstFile.Close()

    encoder := json.NewEncoder(dstFile)
    err := encoder.Encode(persions)
    if err != nil {
        fmt.Println("编码失败，err=",err)
        return
    }
    fmt.Println("编码成功")

}

 

转载于:https://www.cnblogs.com/paad/p/11260959.html