golang中处理关于http请求返回非utf8编码问题

使用golang中的http.client，在把请求返回的内容插入到mysql时，会抛出异常”Incorrect string value“，查看返回内容编码，不是utf8编码，导致发生异常，可以参考下面例子进行处理：

import (
    "bytes"
    "fmt"
    "io/ioutil"
    "net/http"
    "time"
    "unicode/utf8"

    "golang.org/x/text/encoding/simplifiedchinese"
)
    if utf8.Valid(body) {
        wrapper.Body = string(body)
    } else if bytes, err := simplifiedchinese.GB18030.NewDecoder().Bytes(body); err == nil {
        wrapper.Body = string(bytes)
    } else if bytes, err := simplifiedchinese.GBK.NewDecoder().Bytes(body); err == nil {
        wrapper.Body = string(bytes)
    } else if bytes, err := simplifiedchinese.HZGB2312.NewDecoder().Bytes(body); err == nil {
        wrapper.Body = string(bytes)
    } else {
        wrapper.Body = string(body)
    }