Android—基于微信开放平台v3SDK,开发微信支付填坑。
ling4444
8年前
<p>接触微信支付之前听说过这是一个坑,,,心里已经有了准备。。。我以为我没准跳坑出不来了,没有想到我填上了,调用成功之后我感觉公司所有的同事都是漂亮的,隔着北京的大雾霾我仿佛看见了太阳~~~好了,装逼结束。。。进入正题</p> <p>开发准备:</p> <p>1.在微信开放平台申请账号</p> <p>2.成功后创建应用,就是填一些看似很官方很正经的资料了。。。(说审核7天左右,没有意外的情况下你的app第二天就审核成功了是不是很开心,有了appid,是不是就可以调用微 信支付了????-------想多了,真的)</p> <p>3.微信支付是需要额外申请的:需要资料审核,账户验证,协议签署等步骤,(我记得,,资料审核要填写的东西好多,,,好多,,,账户验证就是你审核成功后微信会发送邮件到你 注册时登记的邮箱账号,其中含有随机金额用于账户验证,协议签署,略,太简单)一定要好好阅读你邮件的任何信息,因为有的细节错了,,,你可能填坑很久。。。。。。</p> <p>正式开发阶段:</p> <p>问题1:</p> <p>调用官方的SDK发现只能成功的调起一次微信,再次支付的时候怎么也调用不起来了</p> <p>解决:</p> <p>似乎不是什么正经方法:在手机设置中管理应用程序,清除微信数据,缓存,,再来一遍,绝对可以调起来(当然还是只是一次。。。。)</p> <p>继续:</p> <p>我认为要用微信支付嘛,,就只看了调用支付接口的文档:</p> <p><img src="https://simg.open-open.com/show/1128c727c1d6457461c7e95f82707f83.png"></p> <p>后来发现需要的参数prepayid是怎么也找不到啊,,后来才发现这个prepayid是先调用”统一下单“这个接口时候温馨反过来的东西,但是官方的SDK中并没有统一下单的代码。坑吗???</p> <p>所以要先看统一下单文档了 <a href="/misc/goto?guid=4959725726310271571" rel="nofollow,noindex">https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=9_1</a></p> <p>1.使用自己的APP调用的时候把官网down下来的SDK中WXPayEntryActivity拷贝到自己的项目,所在包的名字最后一定是.wxapi(我连包一起拷了。。。。)</p> <p>2.在项目清单文件中填写:</p> <p><img src="https://simg.open-open.com/show/6ee52434fbd56dd934ef4b1602d8fb2d.png"></p> <p>3.SDK中的AppRegister拷贝下来,,,里面换成你自己的appid,然后在项目清单中也注册一下。</p> <p><img src="https://simg.open-open.com/show/ba09d36210579d8843b47380e8dc06c1.png"></p> <p>4.重点来了,,就是你APP要调微信支付的activity,我这还叫PayActivity</p> <p>要调起微信支付页面,要在这个activity中,将你的app注册到微信</p> <p><img src="https://simg.open-open.com/show/46aba16abd513a54dd9ae8372df9a032.png"></p> <p>接下来先调用统一下单获取prepayid,参数,微信人家要xml格式的!我们就得发送xml格式的!</p> <p><img src="https://simg.open-open.com/show/bc0a723f7f9620e8b0cc3aa0b56b4337.png"></p> <p>好了调用的时候把这个方法的返回值当参数传,,等待微信返回success吧!。。</p> <p>我遇见的错误:签名错误</p> <p>我的原因是大意了 ConfigUtil.NOTIFY_URL这个参数写的空字符串</p> <p>还有是因为debug版运行的,没有打包运行</p> <p>返回成功之后,可以调用支付接口了</p> <p><img src="https://simg.open-open.com/show/1bc32a96f42f840055d61f9099ee56b6.png"></p> <p>不要忘了这一步去跳转界面,,,,,</p> <p><img src="https://simg.open-open.com/show/f578cf50fc1259a0848ab9ed33b226f1.png"></p> <p>没有跳转到微信支付可能是你由运行的debug版本,,,,没有打包。。。。。</p> <p>下面是我的PayActivity完整代码:</p> <pre> <code class="language-java">package com.example.taijiapp.ui; import java.io.StringReader; import java.net.InetAddress; import java.net.NetworkInterface; import java.net.SocketException; import java.util.Enumeration; import java.util.HashMap; import java.util.LinkedList; import java.util.List; import java.util.Map; import java.util.Random; import org.apache.http.NameValuePair; import org.apache.http.message.BasicNameValuePair; import org.xmlpull.v1.XmlPullParser; import com.example.taijiapp.R; import com.example.taijiapp.util.Constants; import com.example.taijiapp.util.MD5; import com.example.taijiapp.util.T; import com.example.taijiapp.util.Util; import com.example.taijiapp.utils.ConfigUtil; import com.tencent.mm.sdk.modelpay.PayReq; import com.tencent.mm.sdk.openapi.IWXAPI; import com.tencent.mm.sdk.openapi.WXAPIFactory; import android.app.Activity; import android.app.ProgressDialog; import android.content.Context; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.os.AsyncTask; import android.os.Bundle; import android.util.Log; import android.util.Xml; import android.view.View; import android.widget.Button; public class PayActivity extends Activity { PayReq req; private IWXAPI msgApi; Map<String, String> resultunifiedorder; StringBuffer sb; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.pay); req = new PayReq(); sb = new StringBuffer(); msgApi = WXAPIFactory.createWXAPI(this, Constants.APP_ID); /** * 将app注册到微信 */ boolean registerApp = msgApi.registerApp(Constants.APP_ID); T.show(this, "注册========"+registerApp+""); Button appayBtn = (Button) findViewById(R.id.appay_btn); Button check_pay_btn = (Button) findViewById(R.id.check_pay_btn); appayBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { GetPrepayIdTask getPrepayId = new GetPrepayIdTask(); getPrepayId.execute(); } }); /** * 将该app注册到微信 */ check_pay_btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { genPayReq(); sendPayReq(); } }); // // 生成签名参数 // Button appay_pre_btn = (Button) findViewById(R.id.appay_pre_btn); // appay_pre_btn.setOnClickListener(new View.OnClickListener() { // // @Override // public void onClick(View v) { // genPayReq(); // } // }); } /** * 生成签名 */ private String genPackageSign(List<NameValuePair> params) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < params.size(); i++) { sb.append(params.get(i).getName()); sb.append('='); sb.append(params.get(i).getValue()); sb.append('&'); } sb.append("key="); sb.append(Constants.KEY); Log.e("拼接=====", sb.toString()); String packageSign = MD5.getMessageDigest(sb.toString().getBytes()).toUpperCase(); Log.e("orion生成签名===", packageSign); return packageSign; } /** * 签名工具 不含商户密钥 -暂时不用 = * 编码格式 UTF-8 = * @return */ public static String createSignNoKey(List<NameValuePair> params) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < params.size(); i++) { sb.append(params.get(i).getName()); sb.append('='); sb.append(params.get(i).getValue()); sb.append('&'); } String signStr = sb.toString(); String subStr = signStr.substring(0, signStr.length() - 1); // 注意sign转为大写 return MD5.getMessageDigest(subStr.getBytes()).toUpperCase(); } private String genAppSign(List<NameValuePair> params) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < params.size(); i++) { sb.append(params.get(i).getName()); sb.append('='); sb.append(params.get(i).getValue()); sb.append('&'); } sb.append("key="); sb.append(Constants.KEY); this.sb.append("sign str\n" + sb.toString() + "\n\n"); String appSign = MD5.getMessageDigest(sb.toString().getBytes()); Log.e("orion", appSign); return appSign; } private String toXml(List<NameValuePair> params) { StringBuilder sb = new StringBuilder(); sb.append("<xml>"); for (int i = 0; i < params.size(); i++) { sb.append("<" + params.get(i).getName() + ">"); sb.append(params.get(i).getValue()); sb.append("</" + params.get(i).getName() + ">"); } sb.append("</xml>"); Log.e("orion", sb.toString()); return sb.toString(); } private class GetPrepayIdTask extends AsyncTask<Void, Void, Map<String, String>> { private ProgressDialog dialog; @Override protected void onPreExecute() { dialog = ProgressDialog.show(PayActivity.this, getString(R.string.app_tip), getString(R.string.getting_prepayid)); } @Override protected void onPostExecute(Map<String, String> result) { if (dialog != null) { dialog.dismiss(); } sb.append("prepay_id\n" + result.get("prepay_id") + "\n\n"); resultunifiedorder = result; } @Override protected void onCancelled() { super.onCancelled(); } @Override protected Map<String, String> doInBackground(Void... params) { String url = String.format("https://api.mch.weixin.qq.com/pay/unifiedorder"); String entity = genProductArgs(); Log.e("orion===发送过去", entity); byte[] buf = Util.httpPost(url, entity); String content = new String(buf); Log.e("orion", content); Map<String, String> xml = decodeXml(content); return xml; } } public Map<String, String> decodeXml(String content) { try { Map<String, String> xml = new HashMap<String, String>(); XmlPullParser parser = Xml.newPullParser(); parser.setInput(new StringReader(content)); int event = parser.getEventType(); while (event != XmlPullParser.END_DOCUMENT) { String nodeName = parser.getName(); switch (event) { case XmlPullParser.START_DOCUMENT: break; case XmlPullParser.START_TAG: if ("xml".equals(nodeName) == false) { // 实例化student对象 xml.put(nodeName, parser.nextText()); } break; case XmlPullParser.END_TAG: break; } event = parser.next(); } return xml; } catch (Exception e) { Log.e("orion", e.toString()); } return null; } /** * 生成随机数 * @return */ private String genNonceStr() { Random random = new Random(); return MD5.getMessageDigest(String.valueOf(random.nextInt(10000)).getBytes()); } /** * 时间戳 * @return */ private long genTimeStamp() { return System.currentTimeMillis() / 1000; } /** * 随机数 * @return */ private String genOutTradNo() { Random random = new Random(); return MD5.getMessageDigest(String.valueOf(random.nextInt(10000)).getBytes()); } /** * 获取设备的ip地址 * @return */ public String getLocalIpAddress() { try { for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) { NetworkInterface intf = en.nextElement(); for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) { InetAddress inetAddress = enumIpAddr.nextElement(); if (!inetAddress.isLoopbackAddress()) { return inetAddress.getHostAddress().toString(); } } } } catch (SocketException ex) { } return null; } private String getWifiIp() { // 获取wifi服务 WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE); // 判断wifi是否开启 if (!wifiManager.isWifiEnabled()) { wifiManager.setWifiEnabled(true); } WifiInfo wifiInfo = wifiManager.getConnectionInfo(); int ipAddress = wifiInfo.getIpAddress(); String ip = intToIp(ipAddress); return ip; } /** * 转化成Ip地址的格式 * @param i * @return */ private String intToIp(int i) { return (i & 0xFF) + "." + ((i >> 8) & 0xFF) + "." + ((i >> 16) & 0xFF) + "." + (i >> 24 & 0xFF); } private String genProductArgs() { StringBuffer xml = new StringBuffer(); String ip = getWifiIp(); if (ip == "" && ip == "") { ip = getLocalIpAddress(); } try { String nonceStr = genNonceStr(); xml.append("</xml>"); List<NameValuePair> packageParams = new LinkedList<NameValuePair>(); packageParams.add(new BasicNameValuePair("appid", Constants.APP_ID)); packageParams.add(new BasicNameValuePair("body", "APPtest")); packageParams.add(new BasicNameValuePair("mch_id", Constants.MCH_ID)); packageParams.add(new BasicNameValuePair("nonce_str", nonceStr)); packageParams.add(new BasicNameValuePair("notify_url", ConfigUtil.NOTIFY_URL)); packageParams.add(new BasicNameValuePair("out_trade_no", genOutTradNo())); packageParams.add(new BasicNameValuePair("spbill_create_ip", ip)); packageParams.add(new BasicNameValuePair("total_fee", "100")); packageParams.add(new BasicNameValuePair("trade_type", "APP")); String sign = genPackageSign(packageParams); packageParams.add(new BasicNameValuePair("sign", sign)); String xmlstring = toXml(packageParams); return xmlstring; } catch (Exception e) { Log.e("TAG", "fail, ex = " + e.getMessage()); return null; } } private void genPayReq() { req.appId = Constants.APP_ID; req.partnerId = Constants.MCH_ID; req.prepayId = resultunifiedorder.get("prepay_id"); req.packageValue = "prepay_id=" + resultunifiedorder.get("prepay_id"); req.nonceStr = genNonceStr(); req.timeStamp = String.valueOf(genTimeStamp()); List<NameValuePair> signParams = new LinkedList<NameValuePair>(); signParams.add(new BasicNameValuePair("appid", req.appId)); signParams.add(new BasicNameValuePair("noncestr", req.nonceStr)); signParams.add(new BasicNameValuePair("package", req.packageValue)); signParams.add(new BasicNameValuePair("partnerid", req.partnerId)); signParams.add(new BasicNameValuePair("prepayid", req.prepayId)); signParams.add(new BasicNameValuePair("timestamp", req.timeStamp)); req.sign = genAppSign(signParams); sb.append("sign\n" + req.sign + "\n\n"); Log.e("orion==genPayReq===============", signParams.toString()); } private void sendPayReq() { boolean sendReq = msgApi.sendReq(req); T.show(this, "微信跳转====="+sendReq+""); } } </code></pre> <p>里面没有的类,,,,呐: <a href="/misc/goto?guid=4959725726407377808" rel="nofollow,noindex">http://download.csdn.net/detail/meijuanyou/9571223</a> 自己下载一下拷贝一下。。。</p> <p>参考资料 <a href="/misc/goto?guid=4959725726407377808" rel="nofollow,noindex">http://blog.csdn.net/meijuanyou/article/details/51863720</a></p> <p>备忘,希望能给大家带来帮助。。。</p> <p> </p> <p>来自:http://www.cnblogs.com/yunfang/p/6078208.html</p> <p> </p>