在Golang中从HTML提取文本内容

Question

What's the best way to extract inner substrings from strings in Golang?

input:

"Hello <p> this is paragraph </p> this is junk <p> this is paragraph 2 </p> this is junk 2"

output:

"this is paragraph 

 this is paragraph 2"

Is there any string package/library for Go that already does something like this?

package main

import (
    "fmt"
    "strings"
)

func main() {
    longString := "Hello world <p> this is paragraph </p> this is junk <p> this is paragraph 2 </p> this is junk 2"

    newString := getInnerStrings("<p>", "</p>", longString)

    fmt.Println(newString)
   //output: this is paragraph 

    //        this is paragraph 2

}
func getInnerStrings(start, end, str string) string {
    //Brain Freeze
        //Regex?
        //Bytes Loop?
}

thanks

Answer 1

Don't use regular expressions to try and interpret HTML. Use a fully capable HTML tokenizer and parser.

I recommend you read this article on CodingHorror.