Let's talk about golang's put request

With the rapid development of mobile Internet, the various requirements of Web applications are becoming more and more complex. As an efficient and powerful programming language, golang is becoming more and more important in handling these requirements. Among them, the put request of the HTTP protocol is also a relatively common requirement. This article will introduce the put request of golang in detail.

HTTP protocol

Before introducing golang’s put request, you first need to understand the HTTP protocol. HTTP (HyperText Transfer Protocol) is an application layer protocol based on the TCP/IP protocol and is used for communication between web browsers and web servers. The HTTP protocol transmits data in text mode, using the "request-response" mode.

Methods in the HTTP protocol include GET, POST, PUT, DELETE, HEAD, OPTIONS, etc. The put request is a method of submitting data to the server. In the put request, the client puts the data into the request body and sends it to the specified resource address on the server.

Golang’s put request

Golang provides the net/http package, which can implement the functions of HTTP client and server. It provides a standard http protocol implementation and can handle HTTP requests and responses conveniently and quickly. The following is a code example of golang using the http package to implement a put request:

import (
    "bytes"
    "net/http"
)

func main() {
    url := "http://example.com/resource"
    data := []byte("data")

    req, err := http.NewRequest("PUT", url, bytes.NewBuffer(data))
    if err != nil {
        panic(err)
    }

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

In the above code, the requested URL address and the data to be submitted are first defined. Then, use the http.NewRequest() method to create a new http request and specify the request method as PUT. The request body contains data. Next, create an http client and call the Do() method to submit the request. Finally, the response is processed and the response body is closed.

It should be noted that in actual development, if you need to process the HTTPS protocol, you can use the crypto/tls package of the go language. At the same time, if you need to build a more flexible HTTP request, you can also use the third-party library go-http-request. For example:

import (
    "github.com/parnurzeal/gorequest"
)

func main() {
    url := "http://example.com/resource"
    data := []byte("data")

    _, body, errs := gorequest.New().
        Put(url).
        SendBytes(data).
        End()

    if len(errs) > 0 {
        panic(errs)
    }

    // 打印响应内容
    fmt.Println(body)
}

The third-party library go-http-request is used here. You can see that the code is more concise and provides some convenient functions, such as processing request headers, query parameters, etc.

Summary

Through the introduction of this article, we have learned about the put request in the HTTP protocol, and also learned how golang handles put requests. Through golang's net/http package and the third-party library go-http-request, you can quickly and easily build programs that implement http requests to meet different needs.

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