golang的json操作[转]

package main

import (

"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

巴特西

golang的json操作[转]

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