nbcp.myoql.weixin.system.WxSystemGroup.kt Maven / Gradle / Ivy
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package nbcp.myoql.weixin.system
import nbcp.base.comm.ApiResult
import nbcp.base.comm.JsonMap
import nbcp.base.comm.const
import nbcp.base.enums.HttpMethod
import nbcp.base.extend.AllFields
import nbcp.base.extend.*
import nbcp.base.extend.HasValue
import nbcp.base.extend.*
import nbcp.base.utils.Base64Util
import nbcp.base.utils.HttpUtil
import nbcp.base.utils.Md5Util
import nbcp.myoql.weixin.wx
import org.bouncycastle.jce.provider.BouncyCastleProvider
import java.security.AlgorithmParameters
import java.security.Security
import java.util.*
import javax.crypto.Cipher
import javax.crypto.spec.IvParameterSpec
import javax.crypto.spec.SecretKeySpec
object WxSystemGroup {
/**
* 微信签名
* https://pay.weixin.qq.com/wiki/doc/api/wxa/wxa_api.php?chapter=4_3
* 忽略 @Ignore 字段， 一般是 sign 字段。
* 如果 指定了 @Require ，则要求不能为空。
*/
@JvmStatic
fun sign(mchSecret: String, wxModel: Any): String {
var type = wxModel::class.java
var list = type.AllFields
.sortedBy { it.name }
.map {
if (it.getAnnotation(nbcp.base.annotation.Ignore::class.java) != null) {
return@map ""
}
var require = it.getAnnotation(nbcp.base.annotation.Require::class.java) != null
var value = it.get(wxModel)
if (value == null) {
if (require) {
throw RuntimeException("微信小程序签名时，${it.name} 不能为空值");
}
return@map "";
}
if (value is String && value.isNullOrEmpty()) {
if (require) {
throw RuntimeException("微信小程序签名时，${it.name} 为必填项");
}
return@map ""
}
return@map it.name + "=" + value
}
.filter { it.isNotEmpty() }
.toMutableList();
list.add("key=${mchSecret}");
return Md5Util.getMd5(list.joinToString("&")).uppercase();
}
@JvmStatic
fun toXml(mchSecret: String, wxModel: Any): String {
var sign = sign(mchSecret, wxModel);
if (sign.isEmpty()) return "";
var type = wxModel::class.java;
return "" + type.AllFields
.sortedBy { it.name }
.map {
var value = it.get(wxModel)
if (value == null) {
return@map "" to ""
}
if (value is String && value.isEmpty()) {
return@map "" to ""
}
return@map it.name to value
}
.filter { it.first.isNotEmpty() }
.toMutableList()
.apply {
add("sign" to sign)
}
.map {
return@map "<${it.first}>"
}
.joinToString("") + " ";
}
/**
* https://www.cnblogs.com/handsomejunhong/p/8670367.html
* 解密用户的加密数据
*/
@JvmStatic
fun decryptWxUserData(encryptedData: String, sessionKey: String, iv: String): String { // 被加密的数据
val dataByte = Base64Util.decodeBase64(encryptedData)
// 加密秘钥
var keyByte = Base64Util.decodeBase64(sessionKey)
// 偏移量
val ivByte = Base64Util.encode2Base64(iv).toByteArray(const.utf8)
// 如果密钥不足16位，那么就补足. 这个if 中的内容很重要
val base = 16
if (keyByte.size % base != 0) {
val groups = keyByte.size / base + if (keyByte.size % base != 0) 1 else 0
val temp = ByteArray(groups * base)
Arrays.fill(temp, 0.toByte())
System.arraycopy(keyByte, 0, temp, 0, keyByte.size)
keyByte = temp
}
// 初始化
Security.addProvider(BouncyCastleProvider())
val cipher = Cipher.getInstance("AES/CBC/PKCS7Padding", "BC")
val spec = SecretKeySpec(keyByte, "AES")
val parameters = AlgorithmParameters.getInstance("AES")
parameters.init(IvParameterSpec(ivByte))
cipher.init(Cipher.DECRYPT_MODE, spec, parameters) // 初始化
val resultByte = cipher.doFinal(dataByte)
if (null == resultByte || resultByte.size <= 0) {
return "";
}
return String(resultByte, const.utf8)
}
/**
* 生成带参数二维码,C端展示 base64
* https://developers.weixin.qq.com/miniprogram/dev/api-backend/open-api/qr-code/wxacode.getUnlimited.html
*/
@JvmOverloads
@JvmStatic
fun getMiniCode(appSecret: String, scene: String, page: String, width: Int = 0): nbcp.base.comm.ApiResult {
require(appSecret.HasValue) { "缺少appSecret!" }
//获取token
val tokenData = wx.officeAccount.getAccessToken(appSecret)
if (tokenData.msg.HasValue) {
return ApiResult.error(tokenData.msg)
}
val token = tokenData.data!!.token
val requestUrl = "https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=${token}"
var postBody = JsonMap();
postBody["scene"] = scene;
postBody["page"] = page;
if (width > 0) {
postBody["width"] = width;
}
var http = HttpUtil(requestUrl)
http.request.httpMethod == HttpMethod.POST
http.setPostBody(postBody.ToJson());
var bytes = http.doNet();
if (http.isError || http.response.contentType.contains("json")) {
return ApiResult.error(bytes, http.status)
}
return ApiResult.of(http)
// // 请求返回来的流接收到这里,然后转换
// val outStream = ByteArrayOutputStream()
//
// try {
// val url = URL(requestUrl)
// val httpURLConnection = url.openConnection() as HttpURLConnection
//
// httpURLConnection.requestMethod = "POST";
// httpURLConnection.doOutput = true;
// httpURLConnection.doInput = true;
//
// val printWriter = PrintWriter(httpURLConnection.outputStream)
// printWriter.write(params.ToJson());
//
// printWriter.flush();
//
// //开始获取数据
// val bis = BufferedInputStream(httpURLConnection.inputStream)
// //保存为文件时候使用,目前只需要显示
// //val os = FileOutputStream(File("C:\\Users\\c\\Desktop\\abc.png"))
// try {
// var read: Int = -1
// bis.use { input ->
// /*保存文件方法
// os.use {
// while ({ read = input.read();read }() != -1) {
// it.write(read)
//
// }
// }*/
// outStream.use {
// while ({ read = input.read();read }() != -1) {
// it.write(read)
//
// }
// }
// }
//
// } catch (t: Throwable) {
// return ApiResult.error("写入图片流出错$t")
// }
//
////但是在kotlin中等式不是一个表达式，所以不能那样子写，kotlin是这样的使用的，有几种写法：
////在使用流或者数据库之类的资源需要关闭close的情况下，可以使用use扩展函数来实现自动关闭的操作
//// while ((len = bis.read(arr)) != -1)
//// {
//// os.write(arr, 0, len);
//// os.flush();
//// }
// //also 写法
// /*try {
// var read: Int = -1
// `bis`.use { input ->
// os.use {
// while (input.read().also { read = it } != -1) {
// it.write(read)
// }
// }
// }
// } catch (t: Throwable) {
// t.printStackTrace()
// }
//*/
// } catch (e: Exception) {
// return ApiResult.error("获取图片出错$e")
// }
//
// if (outStream.size() <100){
// //val map = outStream.toString().FromJson>()
// return ApiResult(outStream.toString())
// }
//
// //处理数据
// val b64 = BASE64Encoder().encode(outStream.toByteArray())
// return ApiResult.of(data = "data:image/png;base64,$b64")
}
/**
* 推送消息
*/
@JvmStatic
fun pushMessage(data: wx_msg_data, appSecret: String): nbcp.base.comm.ApiResult {
require(appSecret.HasValue) { "缺少appSecret!" }
val wx_url = "https://api.weixin.qq.com/cgi-bin/message/subscribe/send?access_token=";
val tokenData = wx.officeAccount.getAccessToken(appSecret)
val http = HttpUtil();
if (tokenData.msg.HasValue) {
return ApiResult.error(tokenData.msg)
}
http.url = "${wx_url}${tokenData.data!!.token}"
http.request.contentType = "application/json"
val ret = http.doPost(data.ToJson())
.apply {
if (http.isError) {
return ApiResult.error("接口调用出错!")
}
}
.FromJson() ?: wx_return_data()
if (ret.errcode != 0) {
return ApiResult.error(ret.errmsg);
}
return nbcp.base.comm.ApiResult();
}
}