1、通过结构体生成json
示例：
package mainimport ("encoding/json""fmt")//成员变量名首字母必须大写type IT struct {Company ?stringSubjects []stringIsOk ????boolPrice ???float64}func main() {//定义一个结构体变量，同时初始化s := IT{"itcast", []string{"Go", "C++", "Python", "Test"}, true, 666.666}//编码，根据内容生成json文本buf, err := json.Marshal(s)if err != nil {fmt.Println("err = ", err)return}fmt.Println("buf = ", string(buf))}执行结果：
buf = ?{"Company":"itcast","Subjects":["Go","C++","Python","Test"],"IsOk":true,"Price":666.666}
2、根据结构体生成json
package mainimport ("encoding/json""fmt")//成员变量名首字母必须大写type IT struct {Company ?stringSubjects []stringIsOk ????boolPrice ???float64}func main() {//定义一个结构体变量，同时初始化s := IT{"itcast", []string{"Go", "C++", "Python", "Test"}, true, 666.666}//编码，根据内容生成json文本buf, err := json.MarshalIndent(s, "", "") //格式化编码if err != nil {fmt.Println("err = ", err)return}fmt.Println("buf = ", string(buf))}执行结果：
buf = ?{"Company": "itcast","Subjects": ["Go","C++","Python","Test"],"IsOk": true,"Price": 666.666}
3、struct_tag的使用 （通过二次编码,可以把大写变成小写，还可以以字符串方式输出）
示例：
package mainimport ("encoding/json""fmt")//成员变量名首字母必须大写type IT struct {//Company ?string ??`json:"-"` //此字段不会输出到屏幕//下面的写法都是二次编码,可以把大写变成小写Company ?string ??`json:"company"`Subjects []string `json:"subjects"`IsOk ????bool ????`json:"isok"`//转成字符串再输出编码//IsOk ?bool ???`json:"string"`Price float64 `json:"price"`}func main() {//定义一个结构体变量，同时初始化s := IT{"itcast", []string{"Go", "C++", "Python", "Test"}, true, 666.666}//编码，根据内容生成json文本buf, err := json.MarshalIndent(s, "", " ") //格式化编码if err != nil {fmt.Println("err = ", err)return}fmt.Println("buf = ", string(buf))}执行结果：
buf = ?{ "company": "itcast", "subjects": [ ?"Go", ?"C++", ?"Python", ?"Test" ], "isok": true, "price": 666.666}
go语音之进阶篇通过结构体生成json
原文地址：https://www.cnblogs.com/nulige/p/10265713.html