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go get gopkg.in/yaml.v2
示例:
package main import ( "os" "log" "fmt" "encoding/json" "gopkg.in/yaml.v2" ) type Config struct { Test Test `yaml:"test"` } type Test struct { User []string `yaml:"user"` MQTT MQ `yaml:"mqtt"` Http HTTP `yaml:"http"` } type HTTP struct { Port string `yaml:"port"` Host string `yaml:"host"` } type MQ struct { Host string `yaml:"host"` Username string `yaml:"username"` Password string `yaml:"password"` } //read yaml config //注:path為yaml或yml文件的路徑 func ReadYamlConfig(path string) (*Config,error){ conf := &Config{} if f, err := os.Open(path); err != nil { return nil,err } else { yaml.NewDecoder(f).Decode(conf) } return conf,nil } //test yaml func main() { conf,err := ReadYamlConfig("D:/test_yaml/test.yaml") if err != nil { log.Fatal(err) } byts,err := json.Marshal(conf) if err != nil { log.Fatal(err) } fmt.Println(string(byts)) }
test.yaml內(nèi)容如下:
test: user: - Tom - Lily - Skay mqtt: host: localhost:1883 username: test password: test http: {port: "8080", host: "127.0.0.1"}
運(yùn)行結(jié)果:
{"Test":{"User":["Tom","Lily","Skay"],"MQTT":{"Host":"localhost:1883","Username":"test","Password":"test"},"Http":{"Port":"8080","Host":"127.0.0.1"}}}
補(bǔ)充:golang 讀取yml格式,多結(jié)構(gòu)體級(jí)聯(lián)
進(jìn)入到gopath下執(zhí)行命令
go get gopkg.in/yaml.v2
源碼地址https://github.com/go-yaml/yaml
ipport: 192.168.2.95:10000 startsendtime: 2017-01-02 08:08:08 sendmaxcountperday: 100 devices: - devid: 123456789 nodes: - pkid: 0 bkid: 0 index: 0 minvalue: 0 maxvalue: 60 datatype: normal - pkid: 0 bkid: 0 index: 0 datatype: boolean - devid: 10001 nodes: - pkid: 0 bkid: 1 index: 0 datatype: boolean warnfrequency: 10 sendfrequency: 10
package main import ( "fmt" "gopkg.in/yaml.v2" "io/ioutil" ) //配置文件中字母要小寫(xiě),結(jié)構(gòu)體屬性首字母要大寫(xiě) type Myconf struct { Ipport string StartSendTime string SendMaxCountPerDay int Devices []Device WarnFrequency int SendFrequency int } type Device struct { DevId string Nodes []Node } type Node struct { PkId string BkId string Index string MinValue float32 MaxValue float32 DataType string } func main() { data, _ := ioutil.ReadFile("config.yml") fmt.Println(string(data)) t := Myconf{} //把yaml形式的字符串解析成struct類(lèi)型 yaml.Unmarshal(data, &t) fmt.Println("初始數(shù)據(jù)", t) if(t.Ipport==""){ fmt.Println("配置文件設(shè)置錯(cuò)誤") return; } d, _ := yaml.Marshal(&t) fmt.Println("看看 :", string(d)) }
1.配置文件中字母要小寫(xiě),結(jié)構(gòu)體屬性首字母要大寫(xiě),開(kāi)發(fā)比較快
也可以指定如:yaml:"c",只不過(guò)有點(diǎn)麻煩,當(dāng)然如果重命名必須要指定
2.yaml:",flow"
這個(gè)意思是將數(shù)組用[“a”,”b”]這樣的格式展示,默認(rèn)展示形式是
- a
- b
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