package mainimport ( "encoding/json" "fmt" "os")type ConfigStruct struct { Host string `json:"host"` Port int `json:"port"` AnalyticsFile string `json:"analytics_file"` StaticFileVersion int `json:"static_file_version"` StaticDir string `json:"static_dir"` TemplatesDir string `json:"templates_dir"` SerTcpSocketHost string `json:"serTcpSocketHost"` SerTcpSocketPort int `json:"serTcpSocketPort"` Fruits []string `json:"fruits"`}type Other struct { SerTcpSocketHost string `json:"serTcpSocketHost"` SerTcpSocketPort int `json:"serTcpSocketPort"` Fruits []string `json:"fruits"`}func main() { jsonStr := `{"host": "http://localhost:9090","port": 9090,"analytics_file": "","static_file_version": 1,"static_dir": "E:/Project/goTest/src/","templates_dir": "E:/Project/goTest/src/templates/","serTcpSocketHost": ":12340","serTcpSocketPort": 12340,"fruits": ["apple", "peach"]}` //json str 转map var dat map[string]interface{} if err := json.Unmarshal([]byte(jsonStr), &dat); err == nil { fmt.Println("==============json str 转map=======================") fmt.Println(dat) fmt.Println(dat["host"]) } //json str 转struct var config ConfigStruct if err := json.Unmarshal([]byte(jsonStr), &config); err == nil { fmt.Println("================json str 转struct==") fmt.Println(config) fmt.Println(config.Host) } //json str 转struct(部份字段) var part Other if err := json.Unmarshal([]byte(jsonStr), &part); err == nil { fmt.Println("================json str 转struct==") fmt.Println(part) fmt.Println(part.SerTcpSocketPort) } //struct 到json str if b, err := json.Marshal(config); err == nil { fmt.Println("================struct 到json str==") fmt.Println(string(b)) } //map 到json str fmt.Println("================map 到json str=====================") enc := json.NewEncoder(os.Stdout) enc.Encode(dat) //array 到 json str arr := []string{"hello", "apple", "python", "golang", "base", "peach", "pear"} lang, err := json.Marshal(arr) if err == nil { fmt.Println("================array 到 json str==") fmt.Println(string(lang)) } //json 到 []string var wo []string if err := json.Unmarshal(lang, &wo); err == nil { fmt.Println("================json 到 []string==") fmt.Println(wo) }} |
from：http://my.oschina.net/golang/blog/210012
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