GoLang 处理JSON数据交换格式

package main import "encoding/json" import "fmt" import "os" type Response1 struct { Page int Fruits []string } type Response2 struct { Page int `json:"page"` Fruits []string `json:"fruits"` } func main() { bolB, _ := json.Marshal(true) fmt.Println(string(bolB)) intB, _ := json.Marshal(1) fmt.Println(string(intB)) fltB, _ := json.Marshal(2.34) fmt.Println(string(fltB)) strB, _ := json.Marshal("gopher") fmt.Println(string(strB)) slcD := []string{"apple", "peach", "pear"} slcB, _ := json.Marshal(slcD) fmt.Println(string(slcB)) mapD := map[string]int{"apple": 5, "lettuce": 7} mapB, _ := json.Marshal(mapD) fmt.Println(string(mapB)) res1D := &Response1{ Page: 1, Fruits: []string{"apple", "peach", "pear"}} res1B, _ := json.Marshal(res1D) fmt.Println(string(res1B)) res2D := &Response2{ Page: 1, Fruits: []string{"apple", "peach", "pear"}} res2B, _ := json.Marshal(res2D) fmt.Println(string(res2B)) byt := []byte(`{"num":6.0,"strs":["a","b"]}`) var dat map[string]interface{} if err := json.Unmarshal(byt, &dat); err != nil { panic(err) } fmt.Println(dat) num := dat["num"].(float64) fmt.Println(num) strs := dat["strs"].([]interface{}) str1 := strs[0].(string) fmt.Println(str1) str := `{"page": 1, "fruits": ["apple", "peach"]}` res := &Response2{} json.Unmarshal([]byte(str), &res) fmt.Println(res) fmt.Println(res.Fruits[0]) enc := json.NewEncoder(os.Stdout) d := map[string]int{"apple": 5, "lettuce": 7} enc.Encode(d) }