golang调用baidu翻译api实现自动翻译

考六级，复习单词必备！！！

package main

import (
    "bytes"
    "crypto/md5"
    "encoding/binary"
    "encoding/hex"
    "fmt"
    "github.com/bitly/go-simplejson"
    "io/ioutil"
    "net/http"
    "net/url"
    "strings"
)

func Md5(s string) string {//计算md5的值
    h := md5.New()
    h.Write([]byte(s))
    return hex.EncodeToString(h.Sum(nil))
}
func u2s(form string) (to string, err error) {//unicode转字符串
    bs, err := hex.DecodeString(strings.Replace(form, `\u`, ``, -1))
    if err != nil {
        return
    }
    for i, bl, br, r := 0, len(bs), bytes.NewReader(bs), uint16(0); i < bl; i += 2 {
        binary.Read(br, binary.BigEndian, &r)
        to += string(r)
    }
    return
}
func translate(word string) []byte {//调用api进行翻译
    data := make(url.Values)
    data["q"] = []string{word}
    data["from"] = []string{"auto"}
    data["to"] = []string{"auto"}
    data["appid"] = []string{"*****************"}
    data["salt"] = []string{"65"}
    s := "*****************" + word + "65" + "*******************"//密匙
    sign := Md5(s)
    data["sign"] = []string{sign}
    res, err := http.PostForm("http://api.fanyi.baidu.com/api/trans/vip/translate", data)
    if err != nil {
        fmt.Println(err.Error())
    }
    defer res.Body.Close()
    body, err := ioutil.ReadAll(res.Body)
    //str := string(body)
    return body
}
func trans(words string) string {//翻译函数
    body := translate(words)
    js, err := simplejson.NewJson(body)
    if err != nil {
        panic(err.Error())
    }
    dst := js.Get("trans_result").GetIndex(0).Get("dst").MustString()
    return dst
}
func main() {
    words := "abandon"
    dst := trans(words)
    fmt.Println(dst)//打印结果
}