我尝试与Apiary合作,制作了一个通用模板,将JSON发送到模拟服务器,并有以下代码:

package main

import (
    "encoding/json"
    "fmt"
    "github.com/jmcvetta/napping"
    "log"
    "net/http"
)

func main() {
    url := "http://restapi3.apiary.io/notes"
    fmt.Println("URL:>", url)

    s := napping.Session{}
    h := &http.Header{}
    h.Set("X-Custom-Header", "myvalue")
    s.Header = h

    var jsonStr = []byte(`
{
    "title": "Buy cheese and bread for breakfast."
}`)

    var data map[string]json.RawMessage
    err := json.Unmarshal(jsonStr, &data)
    if err != nil {
        fmt.Println(err)
    }

    resp, err := s.Post(url, &data, nil, nil)
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println("response Status:", resp.Status())
    fmt.Println("response Headers:", resp.HttpResponse().Header)
    fmt.Println("response Body:", resp.RawText())

}

这段代码没有正确地发送JSON,但我不知道为什么。JSON字符串在每次调用中都可以不同。我不能用Struct来做这个。


当前回答

我不熟悉午睡,但使用Golang的net/http包工作得很好(playground):

func main() {
    url := "http://restapi3.apiary.io/notes"
    fmt.Println("URL:>", url)

    var jsonStr = []byte(`{"title":"Buy cheese and bread for breakfast."}`)
    req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonStr))
    req.Header.Set("X-Custom-Header", "myvalue")
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    fmt.Println("response Status:", resp.Status)
    fmt.Println("response Headers:", resp.Header)
    body, _ := ioutil.ReadAll(resp.Body)
    fmt.Println("response Body:", string(body))
}

其他回答

如果你有很多数据要发送,你可以使用管道:

package main

import (
   "encoding/json"
   "io"
   "net/http"
)

func main() {
   m := map[string]int{"SNG_ID": 75498415}
   r, w := io.Pipe()
   go func() {
      json.NewEncoder(w).Encode(m)
      w.Close()
   }()
   http.Post("https://stackoverflow.com", "application/json", r)
}

https://golang.org/pkg/io#Pipe

如果你已经有一个结构体。

import (
    "bytes"
    "encoding/json"
    "io"
    "net/http"
    "os"
)

// .....

type Student struct {
    Name    string `json:"name"`
    Address string `json:"address"`
}

// .....

body := &Student{
    Name:    "abc",
    Address: "xyz",
}

payloadBuf := new(bytes.Buffer)
json.NewEncoder(payloadBuf).Encode(body)
req, _ := http.NewRequest("POST", url, payloadBuf)

client := &http.Client{}
res, e := client.Do(req)
if e != nil {
    return e
}

defer res.Body.Close()

fmt.Println("response Status:", res.Status)
// Print the body to the stdout
io.Copy(os.Stdout, res.Body)

完整的依据。

如果你想这样做,你需要使用这个映射来解组json字符串。

var data map[string]interface{}

但是如果你每次都需要修改json,并且为了更方便地初始化你的请求体,你可以使用这个映射来创建json体。

var bodyJsonMap map[string]interface{}{
    "key1": val1,
    "key2": val2,
    ...
}

然后将其marshal为json字符串。

你可以使用post来发布你的json。

values := map[string]string{"username": username, "password": password}

jsonValue, _ := json.Marshal(values)

resp, err := http.Post(authAuthenticatorUrl, "application/json", bytes.NewBuffer(jsonValue))

使用实例post http或https请求

    //Encode the data
       postBody, _ := json.Marshal(map[string]string{
          "name":  "Test",
          "email": "Test@Test.com",
       })
       responseBody := bytes.NewBuffer(postBody)
    //Leverage Go's HTTP Post function to make request
       resp, err := http.Post("https://postman-echo.com/post", "application/json", responseBody)
    //Handle Error
       if err != nil {
          log.Fatalf("An Error Occured %v", err)
       }
       defer resp.Body.Close()
    //Read the response body
       body, err := ioutil.ReadAll(resp.Body)
       if err != nil {
          log.Fatalln(err)
       }
       sb := string(body)
       log.Printf(sb)