如何在Go中为字符串创建作者

I need to use the *template.Execute method but I want the result as a string or byte[] so that I can pass it to another *template.Execute but the method writes its results to a writer. Is there a way to create a writer that will write to a variable I define?

Use an instance of bytes.Buffer, which implements io.Writer:

var buff bytes.Buffer
if err := tpl.Execute(&buff, data); err != nil {
    panic(err)
}

You can then get a string result using buff.String(), or a []byte result using buff.Bytes().