go语言之进阶篇通过map生成json

1、通过map生成json

示例1：

package main

import (
        "encoding/json"
        "fmt"
)

func main() {
        //创建一个map
        m := make(map[string]interface{}, 4)
        m["company"] = "itcast"
        m["subjects"] = []string{"Go", "C++", "Python", "Test"}
        m["isok"] = true
        m["price"] = 666.666

        //编码成json
        result, err := json.Marshal(m)
        if err != nil {
                fmt.Println("err = ", err)
                return
        }
        fmt.Println("result = ", string(result))
}

执行结果：

result =  {"company":"itcast","isok":true,"price":666.666,"subjects":["Go","C++","Python","Test"]}

示例2：

package main

import (
        "encoding/json"
        "fmt"
)

func main() {
        //创建一个map
        m := make(map[string]interface{}, 4)
        m["company"] = "itcast"
        m["subjects"] = []string{"Go", "C++", "Python", "Test"}
        m["isok"] = true
        m["price"] = 666.666

        //编码成json
        result, err := json.MarshalIndent(m, "", "      ")
        if err != nil {
                fmt.Println("err = ", err)
                return
        }
        fmt.Println("result = ", string(result))
}

执行结果：

result =  {
        "company": "itcast",
        "isok": true,
        "price": 666.666,
        "subjects": [
                "Go",
                "C++",
                "Python",
                "Test"
        ]
}