How to write garbled crawler code in golang

What to do when writing crawler garbled code in golang

When writing a crawler program in golang, you will encounter a page with encoding format gb2312.

It can be seen from the web page that the character encoding of the page is gb2312

<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />

and golang supports the UTF-8 encoding format by default, so the result of climbing directly will be Garbled characters.

Solution:

Use github.com/axgle/mahonia This package can complete the encoding conversion,

1, and execute go get github.com/axgle/mahonia After the command is used to download this package,

github.com\axgle\mahonia

directory. 2. How to use the code

1) Import package

import "github.com/axgle/mahonia"

2) Conversion function

func ConvertToString(src string, srcCode string, tagCode string) string {
    srcCoder := mahonia.NewDecoder(srcCode)
    srcResult := srcCoder.ConvertString(src)
    tagCoder := mahonia.NewDecoder(tagCode)
    _, cdata, _ := tagCoder.Translate([]byte(srcResult), true)
    result := string(cdata)
    return result
}

3) Call this function where string conversion encoding is required

result = ConvertToString(html, "gbk", "utf-8")

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