时间:2022-11-11 09:44:31 | 栏目:Golang | 点击:次
func testBasic() { num := 1.111 marshal, err := json.Marshal(num) if err != nil { fmt.Println("json.Marshal err:", err) } fmt.Println("序列化后:", string(marshal)) // 序列化后: 1.111 }
结构体序列化:
func main() { testStudent() } /** type Student struct { Name string Age int Birthday string Address string } */ // 如果加上`json:"student_name"`,序列化以后的数据字段是返回指定格式的,可以小写,json固定,后面的随意 type Student struct { // 变量首字母大写才能被解析 Name string `json:"student_name"` Age int `json:"student_age"` Birthday string `json:"student_birthday"` Address string `json:"student_address"` } func testStudent() { student := Student{ Name: "itzhuzhu", Age: 24, Birthday: "1998-01-01", Address: "广州市天河区", } marshal, err := json.Marshal(&student) if err != nil { fmt.Println("json.Marshal err:", err) } fmt.Println("序列化后:", string(marshal)) // 序列化后:{"Name":"itzhuzhu","Age":24,"Birthday":"1998-01-01","Address":"广州市天河区"} }
func testMap() { var m map[string]interface{} m = make(map[string]interface{}) m["name"] = "韩信" m["age"] = 23 m["address"] = "广州" marshal, err := json.Marshal(m) if err != nil { fmt.Println("json.Marshal err:", err) } fmt.Println("序列化后:", string(marshal)) // 序列化后: {"address":"广州","age":23,"name":"韩信"} }
func testSlice() { var slice []map[string]interface{} var m map[string]interface{} m = make(map[string]interface{}) m["name"] = "韩信" m["age"] = 23 m["address"] = "广州" slice = append(slice, m) marshal, err := json.Marshal(m) if err != nil { fmt.Println("json.Marshal err:", err) } fmt.Println("序列化后:", string(marshal)) // 序列化后: {"address":"广州","age":23,"name":"韩信"} }
func deserialize() { str := "{\"Name\":\"itzhuzhu\",\"Age\":24,\"Birthday\":\"1998-01-01\",\"Address\":\"广州市天河区\"}" // 使用Unmarshal反序列化 var student Student err := json.Unmarshal([]byte(str), &student) if err != nil { fmt.Println("json.Unmarshal err:", err) } fmt.Println("反序列化后:", student) // 反序列化后: {itzhuzhu 24 1998-01-01 广州市天河区} }
func deserializeMap() { str := " {\"address\":\"广州\",\"age\":23,\"name\":\"韩信\"}" // 反序列化的时候不需要make,被封装到Unmarshal中了 var m map[string]interface{} err := json.Unmarshal([]byte(str), &m) if err != nil { fmt.Println("json.Unmarshal err:", err) } fmt.Println("反序列化后:", m) // map[address:广州 age:23 name:韩信] }
func deserializeSlice() { str := " [{\"address\":\"广州\",\"age\":23,\"name\":\"韩信\"}]" var slice []map[string]interface{} err := json.Unmarshal([]byte(str), &slice) if err != nil { fmt.Println("json.Unmarshal err:", err) } fmt.Println("反序列化后:", slice) // 反序列化后: [map[address:广州 age:23 name:韩信]] }