golang使用http发送带有自定义参数的POST请求

需求如图：我们需要使用golang调用一个获取token的http接口，并返回token

其中：

• 关键字grant_type为字符串“password”
• 关键字username为分配的用户名
• 关键字password为分配的密码，需进行AES的CBC加密，填充方式为：ZEROS_PADDING
• 关键字Authorization为头内容

具体实现代码如下：

package main

import (
	"bytes"
	"crypto/aes"
	"crypto/cipher"
	"encoding/base64"
	"fmt"
	"io/ioutil"
	"net/http"
	"net/url"
)

var (
	timeOut int
	addr string
	userName string
	passWord string
	clientId string
	clientSecret string

	//cache config
	token string
	//token_type string
)

type AesCrypt struct {
	Key []byte
	Iv  []byte
}


type iAuthorize interface {
	SetAuthorizeConfig(url, name, passwd, id, secret string, timeout int) int
	Authorize() int
}


//加密
func (a *AesCrypt) Encrypt(data []byte) ([]byte, error) {
	aesBlockEncrypt, err := aes.NewCipher(a.Key)
	if err != nil {
		println(err.Error())
		return nil, err
	}

	content := pKCS5Padding(data, aesBlockEncrypt.BlockSize())
	cipherBytes := make([]byte, len(content))
	aesEncrypt := cipher.NewCBCEncrypter(aesBlockEncrypt, a.Iv)
	aesEncrypt.CryptBlocks(cipherBytes, content)
	return cipherBytes, nil
}

//解密
func (a *AesCrypt) Decrypt(src []byte) (data []byte, err error) {
	decrypted := make([]byte, len(src))
	var aesBlockDecrypt cipher.Block
	aesBlockDecrypt, err = aes.NewCipher(a.Key)
	if err != nil {
		println(err.Error())
		return nil, err
	}
	aesDecrypt := cipher.NewCBCDecrypter(aesBlockDecrypt, a.Iv)
	aesDecrypt.CryptBlocks(decrypted, src)
	return pKCS5Trimming(decrypted), nil
}

func pKCS5Padding(cipherText []byte, blockSize int) []byte {
	padding := blockSize - len(cipherText)%blockSize
	padText := bytes.Repeat([]byte{byte(padding)}, padding)
	return append(cipherText, padText...)
}

func pKCS5Trimming(encrypt []byte) []byte {
	padding := encrypt[len(encrypt)-1]
	return encrypt[:len(encrypt)-int(padding)]
}

func SetAuthorizeConfig(url, name, passwd, id, secret string, timeout int)  int{
	addr = url
	userName = name
	passWord = passwd
	clientId = id
	clientSecret = secret
	timeOut = timeout
	return  Authorize()
}

func Authorize() int {
	urlValues := url.Values{}
	urlValues.Add("grant_type","password")
	urlValues.Add("username", userName)

	var aesCrypt = AesCrypt{
		Key: []byte("imccpzx,qwertyui"),
		Iv:  []byte("imccpzx,qwertyui"),
	}

	var text = passWord
	result, err := aesCrypt.Encrypt([]byte(text))
	if err != nil {
		fmt.Println(err)
	}

	pass64 := base64.StdEncoding.EncodeToString(result)
	fmt.Println(pass64)

	urlValues.Add("password", pass64)

	header := clientId + ":" + clientSecret
	ustrAuthorization := "Basic " + base64.StdEncoding.EncodeToString([]byte(header))
	//jsonStr, _ := json.Marshal(urlValues)

	myUrl, err := url.Parse(addr)
	if err != nil {
		fmt.Println(err.Error())
	}

	myUrl.Path = "/securiry/imccp-security/oauth/token"
	httpUrl := myUrl.Query()
	httpUrl.Add("grant_type", "password")
	httpUrl.Add("username", userName)
	httpUrl.Add("password", pass64)

	myUrl.RawQuery = httpUrl.Encode()

	client := &http.Client{}
	req,_ := http.NewRequest("POST",myUrl.String(),nil)
	req.Header.Add("Authorization",ustrAuthorization)

	resp,_ := client.Do(req)


	if resp.StatusCode == 200 {
		body, _ := ioutil.ReadAll(resp.Body)
		fmt.Println(string(body))

	} else {
		fmt.Printf("the errorcode is: %d\n, the staus is: %s\n", resp.StatusCode, resp.Status)
	}

	return 0
}

func main(){
	SetAuthorizeConfig("http://gateway.xx.cn", "ygy2019", "12345", "gbnl", "gbgla34asd41sdf1", 10)
}

效果如图：