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Android 微信支付集成过程

花匠小妙招
2024-12-05 20:20

一、下载最新微信支付SDK demo 并运行过程
官网 https://pay.weixin.qq.com/wiki/doc/api/index.html
APP支付 https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=8_1
以下链接是当前可用链接(如若官方更新后请告知，感谢)

微信支付demo gradle版本(官方demo下载后无法运行，小编根据官方demo代码自己重新建的工程 )
https://download.csdn.net/download/w690333243/11008796
https://open.weixin.qq.com/cgi-bin/showdocument?action=dir_list&t=resource/res_list&verify=1&id=open1419319167&token=&lang=zh_CN

在这里插入图片描述

eclipse demo
https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=11_1

新建的官方demo运行效果图

在这里插入图片描述
二、按照官方文档，在包名下新建 wxapi目录，并新建Activity WXPayEntryActivity（activity名必须是这个WXPayEntryActivity，在此activity中接收充值相关的结果回调）
在 app 下的build.gradle 中添加依赖

//compile 'com.tencent.mm.opensdk:wechat-sdk-android-with-mta:+' compile 'com.tencent.mm.opensdk:wechat-sdk-android-with-mta:5.3.1' 12

WXPayEntryActivity.java

import android.content.Intent; import android.os.Bundle; import android.util.Log; import com.tencent.mm.opensdk.modelbase.BaseReq; import com.tencent.mm.opensdk.modelbase.BaseResp; import com.tencent.mm.opensdk.openapi.IWXAPI; import com.tencent.mm.opensdk.openapi.IWXAPIEventHandler; import com.tencent.mm.opensdk.openapi.WXAPIFactory; public class WXPayEntryActivity extends BaseSwipeBackActivity implements IWXAPIEventHandler { private final String TAG = "WXPayEntryActivity"; private IWXAPI api; @Override protected String getTitleText() { return null; } @Override protected void initViews(Bundle savedInstanceState) { api = WXAPIFactory.createWXAPI(this, App.appId); api.handleIntent(getIntent(), this); } @Override public int getContentViewId() { return R.layout.activity_wxpay_entry; } @Override protected void onNewIntent(Intent intent) { super.onNewIntent(intent); setIntent(intent); api.handleIntent(intent, this); } @Override public void onReq(BaseReq baseReq) { Log.i(TAG, "onReq: " + baseReq.toString()); } /** * @auther WangQX * created at 2019/3/11 0011 * https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=9_12&index=2 * errCode = -1 //签名错误、未注册APPID、项目设置APPID不正确、注册的APPID与设置的不匹配、其他异常等 */ @Override public void onResp(BaseResp baseResp) { Log.i(TAG, "onResp: "); Log.i(TAG, "onPayFinish,errCode=" + baseResp.errCode); if (baseResp.errCode == BaseResp.ErrCode.ERR_COMM) { showToast(getResources().getString(R.string.recharge_failed)); } else if (baseResp.errCode == BaseResp.ErrCode.ERR_OK) { showToast(getResources().getString(R.string.recharge_successful)); } startActivity(MyWalletActivity.class); finish(); } }

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请求微信充值方法：
data是服务器返回的支付相关信息的json

//微信支付 private void payWechat(final String data) { final IWXAPI msgApi = WXAPIFactory.createWXAPI(this, null); WeChatPayEntity weChatPayEntity = new Gson().fromJson(data, new TypeToken<WeChatPayEntity>() { }.getType()); if (weChatPayEntity == null) { return; } String appId = weChatPayEntity.getAppid(); if (!TextUtils.isEmpty(appId)) { // 将该app注册到微信 msgApi.registerApp(appId); PayReq req = new PayReq(); App.appId = appId; req.appId = appId; req.partnerId = weChatPayEntity.getPartnerid(); req.prepayId = weChatPayEntity.getPrepayid(); req.packageValue = weChatPayEntity.getPackageX(); req.nonceStr = weChatPayEntity.getNoncestr(); req.timeStamp = weChatPayEntity.getTimestamp(); req.sign = weChatPayEntity.getPaySign(); boolean result = msgApi.sendReq(req); Log.d(TAG, "payWechat: result:"+result); } }

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在清单文件AndroidManifest.xml中添加

<activity android:name="com.dhh.easy.wahu.wxapi.WXPayEntryActivity" android:launchMode="singleTop" // 这句话网上有人说的必须要加，小编没加，根据情况自行调试。 android:exported="true"></activity> 12345

出现的问题：
android 的App只能在第一次调起微信支付界面，且支付不一定成功(没验证是否能支付成功，只看到第二次无法调起支付界面了)，原因:微信开放平台中填写的应用相关的包名、签名不正确
android studio 下 Terminal窗口中输入如下命令

keytool -list -keystore -v -keystore C:UsersAdministratorDesktoptest.jks 查看签名 1

https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=8_5#
https://blog.csdn.net/xuchao_blog/article/details/58135338
https://blog.csdn.net/afanbaby/article/details/60885642
https://blog.csdn.net/Jarry_JR/article/details/80843901
https://blog.csdn.net/m_sicily/article/details/82493171
https://blog.csdn.net/u010083127/article/details/78968761
https://blog.csdn.net/u012552275/article/details/78758571/
https://blog.csdn.net/xinluqishi123/article/details/52234002
https://blog.csdn.net/li438730745/article/details/80494155
https://blog.csdn.net/ws1836300/article/details/53893102
https://www.jianshu.com/p/81c6c7d3390a
https://blog.csdn.net/hongcha36/article/details/78743535
https://blog.csdn.net/catshitone/article/details/73614321
https://blog.csdn.net/CLinuxF/article/details/79456207
https://blog.csdn.net/jay100500/article/details/52956000