Home Backend Development Golang Detailed explanation and practical application of POST request in Go language

Detailed explanation and practical application of POST request in Go language

Apr 07, 2024 pm 05:21 PM
golang go language post request

Go 语言中,POST 请求可通过 net/http 包的 NewRequest 和 Client 类型实现。语法如下:创建请求:func postRequest(url, contentType string, body []byte)设置请求头:req.Header.Set("Content-Type", contentType)发送请求:resp, err := client.Do(req)读取响应体:body, err := ioutil.ReadAll(resp.Body)

Go 语言 POST 请求详解与实战应用

Go 语言 POST 请求详解与实战应用

简介

POST 请求是 HTTP 请求的一种,用于向服务器发送数据。在 Go 语言中,POST 请求可以通过 net/http 包的 NewRequestClient 类型来实现。

语法

import (
    "bytes"
    "io/ioutil"
    "net/http"
)

func postRequest(url, contentType string, body []byte) ([]byte, error) {
    req, err := http.NewRequest("POST", url, bytes.NewBuffer(body))
    if err != nil {
        return nil, err
    }
    req.Header.Set("Content-Type", contentType)

    client := &http.Client{}

    resp, err := client.Do(req)
    if err != nil {
        return nil, err
    }
    defer resp.Body.Close()

    body, err := ioutil.ReadAll(resp.Body)
    if err != nil {
        return nil, err
    }

    return body, nil
}
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实战案例

创建一个简单的 Go 语言程序来发送 POST 请求并从服务器获取响应:

package main

import (
    "fmt"
    "net/http"
    "os"
)

func main() {
    url := "http://example.com"
    contentType := "application/json"
    body := []byte(`{"name": "John Smith", "age": 30}`)

    resp, err := postRequest(url, contentType, body)
    if err != nil {
        fmt.Println(err)
        os.Exit(1)
    }

    fmt.Println(string(resp))
}
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在这个示例中,我们向一个名为 example.com 的服务器发送 POST 请求,请求的主体是一个 JSON 对象。服务器可以处理这个 POST 请求并返回响应。

拓展阅读

  • [Go 语言 net/http 包](https://golang.org/pkg/net/http/)
  • [HTTP POST 请求](https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Methods/POST)

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