# Functions
AESDecryptMsg ciphertext = AES_Encrypt[random(16B) + msg_len(4B) + rawXMLMsg + appId] 参考：github.com/chanxuehong/wechat.v2.
AesECBDecrypt will decrypt data with PKCS5Padding.
AESEncryptMsg ciphertext = AES_Encrypt[random(16B) + msg_len(4B) + rawXMLMsg + appId] 参考：github.com/chanxuehong/wechat.v2.
CalculateSign 计算签名.
DecodeWithCommonError 将返回值按照CommonError解析.
DecodeWithError 将返回值按照解析.
DecryptMsg 消息解密.
EncryptMsg 加密消息.
GetCurrTS return current timestamps.
HTTPGet get 请求.
HTTPGetContext get 请求.
HTTPPost post 请求.
HTTPPostContext post 请求.
NewCommonError 新建CommonError错误，对于无errcode和errmsg的返回也可以返回该通用错误.
NewECBDecryptor returns a BlockMode which decrypts in electronic code book mode, using the given Block.
NewECBEncryptor returns a BlockMode which encrypts in electronic code book mode, using the given Block.
OrderParam order params.
ParamSign 计算所传参数的签名.
PKCS5Padding -.
PKCS5UnPadding -.
PostFile 上传文件.
PostFileFromReader 上传文件，从 io.Reader 中读取.
PostJSONContext post json 数据请求.
PostJSONWithRespContentType post json数据请求，且返回数据类型.
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PostXML perform HTTP/POST request with XML body.
PostXMLWithTLS perform HTTP/POST request with XML body and TLS.
Query 将Map序列化为Query参数.
RandomStr 随机生成字符串.
RSADecrypt 数据解密.
RSADecryptBase64 Base64解码后再次进行RSA解密.
SetURIModifier 设置URI修改器.
Signature sha1签名.
SliceChunk 用于将字符串切片分块.
Template 对字符串中的和map的key相同的字符串进行模板替换 仅支持 形如: {name}.