golang: http.get() 返回的是什么?

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英文:

golang: http.get() returns

问题

好的,以下是翻译好的内容:

好的,是的,我对Go语言是新手,但对编程并不陌生。我对Go语言中函数的工作方式有些困惑,在过去的两周里,我遇到的问题中有9次中的10次都与函数有关...我并不懒惰,我已经在各处搜索了示例来给我灵感,但它们都在一个main()函数下面。

我想在一个函数中使用http.get,并且让许多其他函数在需要使用http.get时每次调用这个函数,这样我们就不会重复编写代码。示例代码如下(这不是实际的代码):

func myfunction(site) []byte {
    resp, err := client.Get(site) // client是因为我在代理TOR上进行了一些调整,所以必须创建一些辅助函数...但这个工作正常。
    return resp
}

func magic(staff) string {
    // 做一些事情并使用staff和其他常量创建websiteurl
    site := myfunction(website)
    contents, err := html.Parse(site.Body)
    //....
    //....
    return result
}

func main() {
    //... 发生一些事情 :)
}

错误的例子是因为我一直在改变代码并得到不同的错误,或者根本没有结果...

无法将resp.Body(类型为io.ReadCloser)作为返回参数中的[]byte类型使用
./gobot.go:71: 无法将site(类型为[]byte)作为html.Parse的参数中的io.Reader类型使用

当我没有得到错误时,这就是我第一次编写的代码,Site.Body在解析时不起作用...我在标准输出中放了一些调试打印,结果是两个数字序列。

所以基本上,我如何将查询的"result"从一个函数返回给原始函数,以便可以解析和使用它?
我不想重复编写代码,所以尝试将重复的代码放在一个函数中,并在需要时调用它。

谢谢。

英文:

ok so yes im new to golang, but not to coding, I'm a bit confused with the way functions are working with golang, in this 2 weeks I have 9 times out or 10 I had an issue it was related to funtions... I'm no lazy I have search all over for examples to inspire me, but they are all under one main() funtion.
I'm trying to have a http.get in one funtion and many other functions call this funtion everytime we need to use http.get so we dont repeat code over and over.. example:(this is not the actual code)

func myfunction(site) []byte {
        resp, err := client.Get(site) // client is because Im tunneling thing on a proxy TOR and had to create some helpers.. but this is working ok.

        return resp
}

func magic(staff) string {
        // do things and create websiteurl with staff and onther contants
        site := myfunction(website)
        contents, err := html.Parse(site.Body)
        //....
        //....
        return  result
}

main() {

        //... stuff happens :)
}

well the error is for example because I keep changing things around and getting different errors. or not at all.. but then no result..

cannot use resp.Body (type io.ReadCloser) as type []byte in return argument
./gobot.go:71: cannot use site (type []byte) as type io.Reader in argument to html.Parse:

when I do not get an error that is how I did it the first time the Site.Body
will do nothing when parsing... I put a couple of debug prints to STDOUT and I had results like two sequence of numbers.

so basically how do I return a "result" of my query from one function to the original so it can then be parse and used?
I hate to repeat code so trying to keep the repetitive code in one function and have it get it call when needed it.

thanks

答案1

得分: 2

myfunction 的返回类型错误。它应该返回 *http.Response 而不是 []byte

func myfunction(site string) *http.Response {
    resp, err := client.Get(site) 
    if err != nil {
        log.Fatal(err)
    }

    return resp
}
英文:

myfunction has the wrong return type. Instead of []byte it should return *http.Response.

func myfunction(site string) *http.Response {
        resp, err := client.Get(site) 
        if err != nil {
                log.Fatal(err)
        }

        return resp
}

huangapple
  • 本文由 发表于 2016年2月2日 12:22:08
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