英文:
How to get the body response in a request
问题
我正在尝试创建一个像代理一样工作的Web服务器。我的服务器向客户端发送请求（POST、GET...）到特定的网站，接收来自该网站的响应并将其返回给客户端。就像一个代理一样。问题是：例如来自google.com（或任何其他网站）的响应中，我无法读取正文内容。状态码是200，但当我尝试读取正文内容时，我收到了奇怪的东西。
这是我发送请求的代码部分：
request, err := http.NewRequest(method, url, nil)
for k, v := range m {
request.Header.Set(k, v)
}
if err != nil {
log.Fatalln(err.Error())
}
client := http.Client{}
resp, err := client.Do(request)
if err != nil {
log.Fatalln(err.Error())
} else {
fmt.Println("=======================")
fmt.Println(resp)
fmt.Println("=======================")
fmt.Println(resp.Body)
然后我收到了这个：
=======================
&{200 OK 200 HTTP/1.1 1 1 map[Date:[Mon, 09 Jan 2017 18:07:49 GMT]
Cache-Control:[private, max-age=0] Content-Type:[text/html;
charset=ISO-8859-1] P3p:[CP="This is not a P3P policy! See
https://www.google.com/support/accounts/answer/151657?hl=en for more
info."] Server:[gws] X-Xss-Protection:[1; mode=block] Expires:[-1] X-
Frame-Options:[SAMEORIGIN] Set-Cookie:[NID=94=i5qZWuqYtrLAkc-amGHbmDnqx3Wg8mGx0kuk6s-
gKWYMSNXbScl0Cb5GldDzGdfrIrJvHC3151JzHB2s3XLdmFN82-
_gSxu07xwPNbVlzKiZgE9dJf7vXeXSaYQhWowv; expires=Tue, 11-Jul-2017
18:07:49 GMT; path=/; domain=.google.com.br; HttpOnly]] 0xc4200cac20
-1 [] false true map[] 0xc420126000 <nil>}
=======================
&{0xc420014700 <nil> <nil>}
英文:
I'm trying to make a webserver that will work like a proxy. My server make requests (POST, GET ...) for the client to an specific site, receive the response from this site and give it to the client. As i said, like a proxy. The problem is: in the response from google.com for example (or any other site) i can't read the body. The status code is 200 but when i tried to read the body content i receive weird things.
This is the part of my code that i make the request
request, err := http.NewRequest(method, url, nil)
for k, v := range m {
request.Header.Set(k, v)
}
if err != nil {
log.Fatalln(err.Error())
}
client := http.Client{}
resp, err := client.Do(request)
if err != nil {
log.Fatalln(err.Error())
}else{
fmt.Println("=======================")
fmt.Println(resp)
fmt.Println("=======================")
fmt.Println(resp.Body)
And i receive this:
=======================
&{200 OK 200 HTTP/1.1 1 1 map[Date:[Mon, 09 Jan 2017 18:07:49 GMT]
Cache-Control:[private, max-age=0] Content-Type:[text/html;
charset=ISO-8859-1] P3p:[CP="This is not a P3P policy! See
https://www.google.com/support/accounts/answer/151657?hl=en for more
info."] Server:[gws] X-Xss-Protection:[1; mode=block] Expires:[-1] X-
Frame-Options:[SAMEORIGIN] Set-Cookie:[NID=94=i5qZWuqYtrLAkc-amGHbmDnqx3Wg8mGx0kuk6s-
gKWYMSNXbScl0Cb5GldDzGdfrIrJvHC3151JzHB2s3XLdmFN82-
_gSxu07xwPNbVlzKiZgE9dJf7vXeXSaYQhWowv; expires=Tue, 11-Jul-2017
18:07:49 GMT; path=/; domain=.google.com.br; HttpOnly]] 0xc4200cac20
-1 [] false true map[] 0xc420126000 <nil>}
=======================
&{0xc420014700 <nil> <nil>}
答案1
得分: 10
从https://golang.org/pkg/net/http的文档中，要读取响应的主体，可以使用io.ReadAll。
resp, err := http.Get("http://example.com/")
if err != nil {
// 处理错误
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
顺便提一下：你也可以使用ioutil.ReadAll代替io.ReadAll，但是ioutil的文档中说：
> 从Go 1.16开始，相同的功能现在由io包或os包提供，应该在新代码中优先使用这些实现。
英文:
From the documentation at https://golang.org/pkg/net/http, to read the body of the response you can use io.ReadAll.
resp, err := http.Get("http://example.com/")
if err != nil {
// handle error
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
Side note: You can also use ioutil.ReadAll instead of io.ReadAll, but the ioutil documentation says:
> As of Go 1.16, the same functionality is now provided by package io or package os, and those implementations should be preferred in new code.
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论