Android微信支付

分手后的思念是犯贱 2022-07-30 20:58 195阅读 0赞

# Android微信支付 #

2014-08-09

一、使用微信官方的提供的demo里的appid等

1.微信接口上手指南：(从“移动应用开发”->“Android接入指南”）建议，先把官方这篇文章看完  
[![技术分享][wxpay1.png]][wxpay1.png]  
  
2.微信支付接口(从“移动应用开发”->“Android开发手册” ）（下载官方demo[ https://res.wx.qq.com/paymchres/zh\_CN/htmledition/download/wxpay/app\_wx\_pay\_tool\_android1d902c.zip][https_res.wx.qq.com_paymchres_zh_CN_htmledition_download_wxpay_app_wx_pay_tool_android1d902c.zip])

*  Android端接口文档
 *  SDK for Android
 *  Sample for Android
 *  服务端demo
 *  退款及对账开发指南、退款及对账demo

结合官方给的demo和《微信支付接口 For Android 上手指南》文档，可以看出，微信支付总共分为4个步骤：  
（1）利用获取**APP\_ID** 和 **APP\_SECRET **请求获取 access\_token

Java

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      <span>/* </span> 
     </div> 
     <div> 
      <span>* 步骤一：获取AccessToken </span> 
     </div> 
     <div> 
      <span>*/ </span> 
     </div> 
     <div> 
      <span>private<span> <span>class<span> <span>GetAccessTokenTask <span> extends<span> <span>AsyncTask<span>&lt;<span>Void<span>,<span> <span>Void<span>,<span> <span>GetAccessTokenResult<span>&gt;<span> <span>{ </span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp; <span> @Override </span></span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp; <span>protected<span> <span>void<span> <span> onPreExecute<span>(<span>)<span> <span> { </span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div>
       &nbsp; 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp;<span>} </span></span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp; <span> @Override </span></span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp; <span>protected<span> <span>void<span> <span> onPostExecute<span>(<span>GetAccessTokenResult <span> result<span>)<span> <span>{ </span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <span>/* </span></span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; * 根据获得的access token来开启获取支付id的任务 </span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; * 开始步骤二: </span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; */ </span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>GetPrepayIdTask <span>getPrepayId<span> <span>=<span> <span> new<span> <span>GetPrepayIdTask<span>(<span>result<span>.<span>accessToken<span>)<span>; </span></span></span></span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>getPrepayId<span>.<span>execute<span>(<span>)<span>; </span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp;<span>} </span></span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp; <span>@Override </span></span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp; <span> protected<span> <span>GetAccessTokenResult <span>doInBackground<span>(<span>Void<span>.<span>.<span>.<span> <span>params<span>)<span> <span>{ </span> </span></span></span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>//发网络请求获取access token </span></span> 
     </div> 
     <div> 
      <span>&nbsp;&nbsp;&nbsp;&nbsp;<span>} </span></span> 
     </div> 
     <div> 
      <span>} </span> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

（2）利用access\_token，以及**partnerid**和**APP\_KEY**生成预支付订单

Java

（3）利用之前的参数以及**PARTNER\_ID**调起微信支付

Java

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      <span>private<span> <span>void<span> <span>sendPayReq<span> <span> (<span>GetPrepayIdResult <span>result<span>)<span> <span>{ </span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div>
       &nbsp; 
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     <div> 
      <span>PayReq <span> req<span> <span>=<span> <span>new<span> <span>PayReq<span>(<span>)<span>; </span> </span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>req<span>.<span> <span>appId<span> <span>=<span> <span> Constants<span>.<span> <span>APP_ID<span>; </span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>req<span>.<span> <span>partnerId<span> <span>=<span> <span> Constants<span>.<span> <span>PARTNER_ID<span>; </span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>req<span>.<span> <span>prepayId<span> <span>=<span> <span> result<span>.<span> <span>prepayId<span>; </span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>req<span>.<span> <span>nonceStr<span> <span>=<span> <span> nonceStr<span>; </span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>req<span>.<span> <span>timeStamp<span> <span>=<span> <span> String<span>.<span> <span>valueOf<span>(<span>timeStamp<span>)<span>; </span></span></span></span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>req<span>.<span> <span>packageValue<span> <span>=<span> <span> "Sign="<span> <span>+<span> <span>packageValue<span>; </span></span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div>
       &nbsp; 
     </div> 
     <div> 
      <span>List <span> signParams<span> <span>=<span> <span>new<span> <span>LinkedList<span>(<span>)<span>; </span> </span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>signParams<span>.<span>add<span>(<span> <span>new<span> <span>BasicNameValuePair<span>(<span> <span>"appid"<span>,<span> <span>req<span>.<span> <span>appId<span>)<span>)<span>; </span> </span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>signParams<span>.<span>add<span>(<span> <span>new<span> <span>BasicNameValuePair<span>(<span> <span>"appkey"<span>,<span> <span>APP_KEY<span>)<span>)<span>; </span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>signParams<span>.<span>add<span>(<span> <span>new<span> <span>BasicNameValuePair<span>(<span> <span>"noncestr"<span>,<span> <span>req<span>.<span>nonceStr<span>)<span>)<span>; </span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>signParams<span>.<span>add<span>(<span> <span>new<span> <span>BasicNameValuePair<span>(<span> <span>"package"<span>,<span> <span>req<span>.<span>packageValue<span>)<span>)<span>; </span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>signParams<span>.<span>add<span>(<span> <span>new<span> <span>BasicNameValuePair<span>(<span> <span>"partnerid"<span>,<span> <span>req<span>.<span>partnerId<span>)<span>)<span>; </span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>signParams<span>.<span>add<span>(<span> <span>new<span> <span>BasicNameValuePair<span>(<span> <span>"prepayid"<span>,<span> <span>req<span>.<span>prepayId<span>)<span>)<span>; </span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>signParams<span>.<span>add<span>(<span> <span>new<span> <span>BasicNameValuePair<span>(<span> <span>"timestamp"<span>,<span> <span>req<span>.<span>timeStamp<span>)<span>)<span>; </span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>req<span>.<span> <span>sign<span> <span>=<span> <span> genSign<span>(<span>signParams<span>)<span>; </span></span></span></span></span></span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>// 在支付之前，如果应用没有注册到微信，应该先调用IWXMsg.registerApp将应用注册到微信 </span> 
     </div> 
     <div> 
      <span>api<span>.<span>sendReq<span>(<span>req<span>)<span>; </span></span></span></span></span></span></span> 
     </div> 
     <div> 
      <span>} </span> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

（4）支付完成后  
微信会回调 WXPayEntryActivity 的public void onResp(BaseResp resp)方法，所以后续操作，放在这个回调函数中操作就可以了。  
resp.errCode== 0 ：表示支付成功  
resp.errCode== -1 ：表示支付失败  
resp.errCode== -2 ：表示取消支付

**特别注意：**

**1.第一次很多同学调试微信的官方demo会遇到这样的问题**  
[![技术分享][wxpay2.png]][wxpay2.png]  
**解决办法**：[https://open.weixin.qq.com/cgi-bin/frame?t=resource/res\_main\_tmpl&lang=zh\_CN&token=bc77c2a9db0380aca7d29b1418fa0bccc23070d7][https_open.weixin.qq.com_cgi-bin_frame_t_resource_res_main_tmpl_lang_zh_CN_token_bc77c2a9db0380aca7d29b1418fa0bccc23070d7]

（1）、解压sdk demo工程压缩包，并导入到workspace，如下图：  
[![技术分享][wxpay3.png]][wxpay3.png]

（2）、选择Eclipse顶部菜单Window->Preferences，在弹出的对话框中，选择Android目录下的Build，如下图：  
[![技术分享][wxpay4.png]][wxpay4.png]  
指定Custom debug keystore选项的路径为sdk demo工程目录中的debug.keystore文件，如下图：  
[![技术分享][wxpay5.png]][wxpay5.png]  
并应用该配置。

（3）、运行该sdk\_sample工程。

[![技术分享][wxpay8.png]][wxpay8.png] [![技术分享][wxpay7.png]][wxpay7.png]

二、当你使用自己申请的appid等参数。

当你在微信开发平台（open.weixin.qq.com）申请一个普通应用时，你会得到：  
public static final String** APP\_ID **= “wxd930ea5d5a258f4f”;  
private static final String **APP\_SECRET** = “db426a9829e4b49a0dcac7b4162da6b6″;

当你的应用涉及到微信支付功能是，你需要申请微信支付，申请会有些合同啊什么的，审核通过你会收到邮件，邮件中会有  
private static final String **APP\_KEY（PaySignKey）** = “L8LrMqqeGRxST5reouB0K66CaYAWpqhAVsq7ggKkxHCOastWksvuX1uvmvQclxaHoYd3ElNBrNO2DHnnzgfVG9Qs473M3DTOZug5er46FhuGofumV8H2FVR9qkjSlC5K”; // wxd930ea5d5a258f4f 对应的支付密钥

除此之外，还有个微信支付商户申请，申请通过后邮件中会回复：  
public static final String **PARTNER\_ID **= “1900000109”;  
private static final String **PARTNER\_KEY** = “8934e7d15453e97507ef794cf7b0519d”;

然后为了支付的安全起见，最好把支付的前两个步骤放在服务器端完成，客户端请求服务器拿到前两个步骤生成的一些参数，然后在客户端做第三步，调起微信支付。

**特别注意：**

**1.可以弹出微信支付的界面，但是支付之后没有进入回调的Activity：WXPayEntryActivity ?**

微信开放平台有个 不成文的规定（文档里没有说明），就是回调的Activity必须是：你的包名（微信demo里是：net.sourceforge.simcpux）+.wxapi.WXPayEntryActivity.java  
其他的接口回调的Activity必须是：你的包名（微信demo里是：net.sourceforge.simcpux）+.wxapi.WXEntryActivity.java

而且这两个回调的Activity必须要实现IWXAPIEventHandler的接口 。

**2.签名问题，总是弹不出微信支付界面，然后就回调-1 ?**  
这个问题多半是签名错误，或者keystore，包名，签名不一致导致。  
[![技术分享][wxpay6.png]][wxpay6.png]  
（1）在申请微信开放平台的时候需要填写 应用包名和应用签名（这个签名可以用 apk生成），所以这就需要你用正式的 keystore打包应用测试开放平台的接口。

（2）再有错误，就是你第二步生成Prepayid时的app\_signature 生成错误，仔细看下demo和文档。

**3.注意配置文件中AndroidManifest.xml**  
demo里中有这写配置，似乎对微信支付的调起及回调都有影响，还是按照demo里的，加上这部分配置

XHTML

三、微信其他接口-分享接口

用过微信支付接口之后，其他的微信接口就简单多了。微信的分享 分为分享到朋友圈和分享给好友（即发送消息）两种。

（1）直接调用SDK

Java

然后调起 分享的对话框之后就是 微信做的操作，分享完成后一样会回到回调的入口，你的包名（微信demo里是：net.sourceforge.simcpux）+.wxapi.WXEntryActivity.java

你可以在onResp中做分享完成的后续操作。

（2）还有一种就是不使用SDK方式分享，参见：[http://blog.csdn.net/freesonhp/article/details/10296141][http_blog.csdn.net_freesonhp_article_details_10296141]

Java

这种方式的缺点就是你得不到回调，不知道分享是否成功，但却是一种简单的方式。

如果还有其他什么问题：参见另一篇文章[ http://blog.csdn.net/janice0529/article/details/38051987][http_blog.csdn.net_janice0529_article_details_38051987]

[转-Android微信支付][-Android]

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[wxpay1.png]: http://fangjie-wordpress.stor.sinaapp.com/uploads/2014/08/wxpay1.png
[https_res.wx.qq.com_paymchres_zh_CN_htmledition_download_wxpay_app_wx_pay_tool_android1d902c.zip]: https://res.wx.qq.com/paymchres/zh_CN/htmledition/download/wxpay/app_wx_pay_tool_android1d902c.zip
[wxpay2.png]: http://fangjie-wordpress.stor.sinaapp.com/uploads/2014/08/wxpay2.png
[https_open.weixin.qq.com_cgi-bin_frame_t_resource_res_main_tmpl_lang_zh_CN_token_bc77c2a9db0380aca7d29b1418fa0bccc23070d7]: https://open.weixin.qq.com/cgi-bin/frame?t=resource/res_main_tmpl&lang=zh_CN&token=bc77c2a9db0380aca7d29b1418fa0bccc23070d7
[wxpay3.png]: http://fangjie-wordpress.stor.sinaapp.com/uploads/2014/08/wxpay3.png
[wxpay4.png]: http://fangjie-wordpress.stor.sinaapp.com/uploads/2014/08/wxpay4.png
[wxpay5.png]: http://fangjie-wordpress.stor.sinaapp.com/uploads/2014/08/wxpay5.png
[wxpay8.png]: http://fangjie-wordpress.stor.sinaapp.com/uploads/2014/08/wxpay8.png
[wxpay7.png]: http://fangjie-wordpress.stor.sinaapp.com/uploads/2014/08/wxpay7.png
[wxpay6.png]: http://fangjie-wordpress.stor.sinaapp.com/uploads/2014/08/wxpay6.png
[http_blog.csdn.net_freesonhp_article_details_10296141]: http://blog.csdn.net/freesonhp/article/details/10296141
[http_blog.csdn.net_janice0529_article_details_38051987]: http://blog.csdn.net/janice0529/article/details/38051987
[-Android]: http://www.mamicode.com/info-detail-862201.html