Golang JSON-反序列化map，切片（slice），结构体（struct）

清疚 2023-02-20 02:08 10阅读 0赞

package main
    
    import (
    	"encoding/json"
    	"fmt"
    )
    
    /*{"addr":"beijing","age":123,"name":"typ"}
    {"name":"qqqq","age":12,"hobbit":"ttttt"}
    [{"addr":"beijing111","age":1231,"name":"typ111"},{"addr":"beijing222","age":1222,"name":"typ222"}]*/
    
    type student struct {
    	//tagjson序列化后是小写
    	Name string 	`json:"name"`
    	Age int			`json:"age"`
    	Hobbit string	`json:"hobbit"`
    }
    
    func unjsonStruct(){
    	var stu student
    	fmt.Println("unjson before： ",stu)
    	var str = "{\"name\":\"qqqq\",\"age\":12,\"hobbit\":\"ttttt\"}"
    	err := json.Unmarshal([]byte(str), &stu)
    	if err != nil {
    		fmt.Println("unjson 失败")
    	}
    	fmt.Println("unjson after： ",stu)
    }
    
    func unjsonMap(){
    	testMap := make(map[string]interface{})
    	fmt.Println("unjson before： ",testMap)
    	var str = "{\"addr\":\"beijing\",\"age\":123,\"name\":\"typ\"}"
    	err := json.Unmarshal([]byte(str), &testMap)
    	if err != nil {
    		fmt.Println("unjson 失败")
    	}
    	fmt.Println("unjson after： ",testMap)
    }
    
    func unjsonSlice(){
    	var sli  = make([]map[string]interface{},2)
    	fmt.Println("unjson before： ",sli)
    	var str = "[{\"addr\":\"beijing111\",\"age\":1231,\"name\":\"typ111\"},{\"addr\":\"beijing222\",\"age\":1222," +
    		"\"name\":\"typ222\"}]"
    	err := json.Unmarshal([]byte(str), &sli)
    	if err != nil {
    		fmt.Println("unjson 失败")
    	}
    	fmt.Println("unjson after： ",sli)
    }
    
    func main() {
    	unjsonStruct()
    	unjsonMap()
    	unjsonSlice()
    }