Android版-微信APP支付

首發地址: Android版-微信APP支付php

歡迎留言、轉發
微信極速開發系列文章(微信支付、受權獲取用戶信息等):點擊這裏java

目錄
一、註冊帳號、開發者認證
二、添加應用
三、申請微信支付
四、技術開發功能實現步驟介紹
五、代碼實例android

此項目已開源歡迎Start、PR、發起Issues一塊兒討論交流共同進步
https://github.com/Javen205/IJPay
http://git.oschina.net/javen205/IJPaygit

微信APP支付接入商戶服務中心 官方介紹文檔github

一、註冊帳號、開發者認證

開放平臺直接註冊,註冊郵箱不能與微信其餘的產品同號。ajax

比較坑的是微信公衆號中的支付(微信買單、刷卡、公衆號支付、wap支付)以及微信app支付都須要進行微信認證而不是公用一個微信商戶平臺(須要交兩次認證的費用)。算法

微信認證這個時間比較短(畢竟交了300大洋)通常一個工做日就會有人聯繫你覈查公司的資料。json

微信認證(開發者資質認證)經過以後就能夠在開放平臺添加應用了(這個須要審覈),應用經過以後就能夠申請微信支付了(也須要審覈)api

二、添加應用

這個比較簡單,按照提示操做就行 上圖服務器

添加應用-填寫基本信息1

添加應用-填寫基本信息2

添加應用-上傳應用圖片

添加應用-填寫平臺信息

應用包名只定義,應用簽名能夠使用資源下載中心的簽名生成工具。務必記住包名以及簽名keystore文件的密碼,若是包名或者簽名文件不對打包是喚不起微信支付的。

資源下載

下載的資源截圖

應用簽名工具

三、申請微信支付

若是添加的應用審覈經過了(一個工做日),就能夠直接申請微信支付了(7個工做日以內)。

應用審覈經過-申請微信支付

審覈經過以後將會收到審覈經過的郵件,裏面有登陸商戶平臺的登陸帳戶、密碼、商戶號以及一些操做指引的說明。服務端生成預付訂單的簽名須要密鑰 設置方法能夠參考這裏

四、技術開發功能實現

微信APP支付介紹【文檔
APP端開發步驟說明 【文檔

這裏主要聊聊Android微信支付,主要包括如下幾個步驟
一、商戶服務端生成訂單並在微信平臺生成預付訂單
二、客戶端調起微信支付進行支付
三、客戶端回調支付結果
四、服務端接收支付通知

一、商戶服務端生成訂單並在微信平臺生成預付訂單

調起微信支付前須要服務器生成支付訂單再調用【統一下單API】生成預付訂單prepayId,再生成簽名sign【調起支付API

以上兩個步驟建議都在服務端完成,客戶端(Android)經過接口獲取對應的參數便可

二、客戶端調起微信支付進行支付

經過微信提供的jar 喚起微信支付

調起微信支付

三、客戶端回調支付結果

參照微信SDK Sample,在net.sourceforge.simcpux.wxapi包路徑中實現WXPayEntryActivity類【包名或類名不一致會形成沒法回調】
栗子說明:認真反覆讀了幾遍,感受這句話有歧義是一個坑,測試的時候一直不回調。這裏他想說的意識以下:
好比你申請應用包名爲:javen.com 那麼回調的WXPayEntryActivity類必須放到javen.com.wxapi 的包下面

客戶端回調支付結果

四、服務端接收支付通知

支付結果通知【官方文檔

代碼實現參考開源項目 【點擊這裏

五、代碼實例

服務端代碼:根據商戶訂單生成微信預付訂單並返回喚起微信支付須要的參數。Demo中參數寫成固定了僅供參考

此項目已開源 【點擊這裏】 若是對你有幫助請點擊Start告訴我 hahaha 。如下代碼對應的目錄在 com.javen.weixin.controller.WeixinPayController.java

/**
     * 微信APP支付
     */
    public void appPay(){
        //不用設置受權目錄域名
        //統一下單地址 https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=9_1#
        Map<String, String> params = new HashMap<String, String>();
        params.put("appid", appid);
        params.put("mch_id", partner);
        params.put("nonce_str", System.currentTimeMillis() / 1000 + "");
        params.put("body", "Javen微信公衆號極速開發");
        String out_trade_no=System.currentTimeMillis()+"";
        params.put("attach", "custom json");
        params.put("out_trade_no", out_trade_no);
        int price=10000;
        params.put("total_fee", price+"");
        
        String ip = IpKit.getRealIp(getRequest());
        if (StrKit.isBlank(ip)) {
            ip = "127.0.0.1";
        }
        
        params.put("spbill_create_ip", ip);
        params.put("notify_url", notify_url);
        params.put("trade_type", "APP");

        String sign = PaymentKit.createSign(params, paternerKey);
        params.put("sign", sign);
        
        String xmlResult = PaymentApi.pushOrder(params);
        
System.out.println(xmlResult);
        Map<String, String> result = PaymentKit.xmlToMap(xmlResult);
        
        String return_code = result.get("return_code");
        String return_msg = result.get("return_msg");
        if (StrKit.isBlank(return_code) || !"SUCCESS".equals(return_code)) {
            ajax.addError(return_msg);
            renderJson(ajax);
            return;
        }
        String result_code = result.get("result_code");
        if (StrKit.isBlank(result_code) || !"SUCCESS".equals(result_code)) {
            ajax.addError(return_msg);
            renderJson(ajax);
            return;
        }
        // 如下字段在return_code 和result_code都爲SUCCESS的時候有返回
        String prepay_id = result.get("prepay_id");
        //封裝調起微信支付的參數 https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=9_12
        Map<String, String> packageParams = new HashMap<String, String>();
        packageParams.put("appid", appid);
        packageParams.put("partnerid", partner);
        packageParams.put("prepayid", prepay_id);
        packageParams.put("package", "Sign=WXPay");
        packageParams.put("noncestr", System.currentTimeMillis() + "");
        packageParams.put("timestamp", System.currentTimeMillis() / 1000 + "");
        String packageSign = PaymentKit.createSign(packageParams, paternerKey);
        packageParams.put("sign", packageSign);
        
        String jsonStr = JsonUtils.toJson(packageParams);
System.out.println("最新返回apk的參數:"+jsonStr);
        renderJson(jsonStr);
    }
客戶端代碼實現

使用單例模式統一入口,首先判斷微信客戶端是否安裝,若是有安裝再從商戶服務器獲取調起支付的參數

public class IPay {
    private static  IPay mIPay;
    private Context mContext;
    
    private IPay(Context context) {
        mContext = context;
    }
    
    public static IPay getIntance(Context context){
        if (mIPay == null) {
            synchronized(IPay.class){
                if (mIPay == null) {
                    mIPay = new IPay(context);
                }
            }
        }
        return mIPay;
    }
    
    //支付結果回調
    public interface IPayListener{
        void onPay(int code);
    }
    
    public void toTestPay(Order order,IPayListener listener){
        if (order != null) {
            if (IPayLogic.getIntance(mContext.getApplicationContext()).isWeixinAvilible()) {
                Constants.payListener = listener;
                new TestPayPrepay(mContext).execute();
            }else {
                Toast.makeText(mContext, "未安裝微信", Toast.LENGTH_LONG).show();
            }
        }else {
            Toast.makeText(mContext, "參數異常 order is null", Toast.LENGTH_LONG).show();
        }
    }
    
}

調起微信支付、獲取調取微信支付參數、判斷微信是否安裝邏輯實現

public class IPayLogic {
    private static  IPayLogic mIPayLogic;
    private Context mContext;
    
    private IPayLogic(Context context) {
        mContext = context;
    }
    
    public static IPayLogic getIntance(Context context){
        if (mIPayLogic == null) {
            synchronized(IPayLogic.class){
                if (mIPayLogic == null) {
                    mIPayLogic = new IPayLogic(context);
                }
            }
        }
        return mIPayLogic;
    }
    
    //測試
    public String testPay(){
        return HttpKit.get(Constants.TESTPAY_URL);
    }
    
    /**
     * 調起支付
     * @param appId
     * @param partnerId
     * @param prepayId
     * @param nonceStr
     * @param timeStamp
     * @param sign
     */
    public void startWXPay(String appId,String partnerId,String prepayId,
            String nonceStr,String timeStamp,String sign){

        IWXAPI api= WXAPIFactory.createWXAPI(mContext, null);
        api.registerApp(appId);
        
        boolean isPaySupported = api.getWXAppSupportAPI() >= Build.PAY_SUPPORTED_SDK_INT;
        if (!isPaySupported) {
            Toast.makeText(mContext, "請更新微信客戶端", Toast.LENGTH_SHORT).show();
            return;
        }
        
        PayReq request = new PayReq();
        request.appId = appId;
        request.partnerId = partnerId;
        request.prepayId= prepayId;
        request.packageValue = "Sign=WXPay";
        request.nonceStr=nonceStr;
        request.timeStamp= timeStamp;
        request.sign= sign;
        api.sendReq(request);
    }

    
    /**
     * 判斷微信是否安裝
     * @param context
     * @return
     */
     public  boolean isWeixinAvilible() {
            final PackageManager packageManager = mContext.getPackageManager();// 獲取packagemanager
            List<PackageInfo> pinfo = packageManager.getInstalledPackages(0);// 獲取全部已安裝程序的包信息
            if (pinfo != null) {
                for (int i = 0; i < pinfo.size(); i++) {
                    String pn = pinfo.get(i).packageName;
                    if (pn.equals("com.tencent.mm")) {
                        return true;
                    }
                }
            }
            return false;
        }

}

HttpKit MD5 工具類

/**
 * HttpKit
 */
public class HttpKit {
    
    private HttpKit() {}
    
    /**
     * https 域名校驗
     */
    private class TrustAnyHostnameVerifier implements HostnameVerifier {
        public boolean verify(String hostname, SSLSession session) {
            return true;
        }
    }
    
    /**
     * https 證書管理
     */
    private class TrustAnyTrustManager implements X509TrustManager {
        public X509Certificate[] getAcceptedIssuers() {
            return null;  
        }
        public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
        }
        public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
        }
    }
    
    private static final String GET  = "GET";
    private static final String POST = "POST";
    private static String CHARSET = "UTF-8";
    
    private static final SSLSocketFactory sslSocketFactory = initSSLSocketFactory();
    private static final TrustAnyHostnameVerifier trustAnyHostnameVerifier = new HttpKit().new TrustAnyHostnameVerifier();
    
    private static SSLSocketFactory initSSLSocketFactory() {
        try {
            TrustManager[] tm = {new HttpKit().new TrustAnyTrustManager() };
            SSLContext sslContext = SSLContext.getInstance("TLS");  // ("TLS", "SunJSSE");
            sslContext.init(null, tm, new java.security.SecureRandom());
            return sslContext.getSocketFactory();
        }
        catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
    
    public static void setCharSet(String charSet) {
        if (charSet.isEmpty()) {
            throw new IllegalArgumentException("charSet can not be blank.");
        }
        HttpKit.CHARSET = charSet;
    }
    
    private static HttpURLConnection getHttpConnection(String url, String method, Map<String, String> headers) throws IOException, NoSuchAlgorithmException, NoSuchProviderException, KeyManagementException {
        URL _url = new URL(url);
        HttpURLConnection conn = (HttpURLConnection)_url.openConnection();
        if (conn instanceof HttpsURLConnection) {
            ((HttpsURLConnection)conn).setSSLSocketFactory(sslSocketFactory);
            ((HttpsURLConnection)conn).setHostnameVerifier(trustAnyHostnameVerifier);
        }
        
        conn.setRequestMethod(method);
        conn.setDoOutput(true);
        conn.setDoInput(true);
        
        conn.setConnectTimeout(19000);
        conn.setReadTimeout(19000);
        
        conn.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
        conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36");
        
        if (headers != null && !headers.isEmpty())
            for (Entry<String, String> entry : headers.entrySet())
                conn.setRequestProperty(entry.getKey(), entry.getValue());
        
        return conn;
    }
    
    /**
     * Send GET request
     */
    public static String get(String url, Map<String, String> queryParas, Map<String, String> headers) {
        HttpURLConnection conn = null;
        try {
            conn = getHttpConnection(buildUrlWithQueryString(url, queryParas), GET, headers);
            conn.connect();
            return readResponseString(conn);
        }
        catch (Exception e) {
            throw new RuntimeException(e);
        }
        finally {
            if (conn != null) {
                conn.disconnect();
            }
        }
    }
    
    public static String get(String url, Map<String, String> queryParas) {
        return get(url, queryParas, null);
    }
    
    public static String get(String url) {
        return get(url, null, null);
    }
    
    /**
     * Send POST request
     */
    public static String post(String url, Map<String, String> queryParas, String data, Map<String, String> headers) {
        HttpURLConnection conn = null;
        try {
            conn = getHttpConnection(buildUrlWithQueryString(url, queryParas), POST, headers);
            conn.connect();
            
            OutputStream out = conn.getOutputStream();
            out.write(data.getBytes(CHARSET));
            out.flush();
            out.close();
            
            return readResponseString(conn);
        }
        catch (Exception e) {
            throw new RuntimeException(e);
        }
        finally {
            if (conn != null) {
                conn.disconnect();
            }
        }
    }
    
    public static String post(String url, Map<String, String> queryParas, String data) {
        return post(url, queryParas, data, null);
    }
    
    public static String post(String url, String data, Map<String, String> headers) {
        return post(url, null, data, headers);
    }
    
    public static String post(String url, String data) {
        return post(url, null, data, null);
    }
    
    private static String readResponseString(HttpURLConnection conn) {
        StringBuilder sb = new StringBuilder();
        InputStream inputStream = null;
        try {
            inputStream = conn.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, CHARSET));
            String line = null;
            while ((line = reader.readLine()) != null){
                sb.append(line).append("\n");
            }
            return sb.toString();
        }
        catch (Exception e) {
            throw new RuntimeException(e);
        }
        finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                }
            }
        }
    }
    
    /**
     * Build queryString of the url
     */
    private static String buildUrlWithQueryString(String url, Map<String, String> queryParas) {
        if (queryParas == null || queryParas.isEmpty())
            return url;
        
        StringBuilder sb = new StringBuilder(url);
        boolean isFirst;
        if (url.indexOf("?") == -1) {
            isFirst = true;
            sb.append("?");
        }
        else {
            isFirst = false;
        }
        
        for (Entry<String, String> entry : queryParas.entrySet()) {
            if (isFirst) isFirst = false;   
            else sb.append("&");
            
            String key = entry.getKey();
            String value = entry.getValue();
            if (!value.isEmpty())
                try {value = URLEncoder.encode(value, CHARSET);} catch (UnsupportedEncodingException e) {throw new RuntimeException(e);}
            sb.append(key).append("=").append(value);
        }
        return sb.toString();
    }
}
public class MD5 {
    public static String MD5sign(String s) {
        char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
        try {
            byte[] btInput = s.getBytes("UTF-8");
            // 得到MD5摘要算法的 MessageDigest 對象
            MessageDigest mdInst = MessageDigest.getInstance("MD5");
            // 使用指定的字節更新摘要
            mdInst.update(btInput);
            // 得到密文
            byte[] md = mdInst.digest();
            // 把密文轉換成十六進制的字符串形式
            int j = md.length;
            char str[] = new char[j * 2];
            int k = 0;
            for (int i = 0; i < j; i++) {
                byte byte0 = md[i];
                str[k++] = hexDigits[byte0 >>> 4 & 0xf];
                str[k++] = hexDigits[byte0 & 0xf];
            }
            return new String(str).toLowerCase();
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }


    public static void main(String[] args) {
        System.out.println(MD5sign("Hello world"));
    }
}

使用AsyncTask異步獲取調起微信支付的相關參數。固然你也能夠使用其餘的異步網絡請求開源框架

public class TestPayPrepay extends AsyncTask<Object, Integer, String> {
    private Context mContext;
    public TestPayPrepay(Context context) {
        this.mContext = context;
    }
    
    @Override
    protected String doInBackground(Object... params) {
        System.out.println("TestPayPrepay doInBackground");
        return  IPayLogic.getIntance(mContext).testPay();
    }
    
    @Override
    protected void onPostExecute(String result) {
        try {
            if (result!=null) {
                System.out.println("TestPayPrepay result>"+result);
                JSONObject data = new JSONObject(result);
                if(!data.has("code")){
                    String sign = data.getString("sign");
                    String timestamp = data.getString("timestamp");
                    String noncestr = data.getString("noncestr");
                    String partnerid = data.getString("partnerid");
                    String prepayid = data.getString("prepayid");
                    String appid = data.getString("appid");
                    Toast.makeText(mContext, "正在調起支付", Toast.LENGTH_SHORT).show();
                    
                    Constants.APP_ID = appid;
                    
                    IPayLogic.getIntance(mContext).startWXPay(appid, partnerid, prepayid, noncestr, timestamp, sign);
                }else{
                    String message = data.getString("message");
                    Log.d("PAY_GET", "返回錯誤"+message);
                    Toast.makeText(mContext, "返回錯誤:"+message, Toast.LENGTH_SHORT).show();
                }
            }else {
                System.out.println("get  prepayid exception, is null");
            }
        } catch (Exception e) {
            Log.e("PAY_GET", "異常:"+e.getMessage());
            Toast.makeText(mContext, "異常:"+e.getMessage(), Toast.LENGTH_SHORT).show();
        }
        super.onPostExecute(result);
    }

}

支付結果回調

<activity
            android:name="[應用的包名].wxapi.WXPayEntryActivity"
            android:exported="true"
            android:theme="@android:style/Theme.Translucent"
            android:launchMode="singleTop" >
 </activity>

封裝的是SDK 因此這裏設置了一個透明的主題

public class WXPayEntryActivity extends Activity implements IWXAPIEventHandler{
    private IWXAPI api;
    private IPayListener payListener;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        requestWindowFeature(Window.FEATURE_NO_TITLE);//隱藏標題
        LinearLayout ll = new LinearLayout(this);
        setContentView(ll);
        api = WXAPIFactory.createWXAPI(this, Constants.APP_ID);
        api.handleIntent(getIntent(), this);
        finish();
    }

    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        setIntent(intent);
        api.handleIntent(intent, this);
    }

    @Override
    public void onReq(BaseReq req) {
    }

    @Override
    public void onResp(BaseResp resp) {
        payListener = Constants.payListener;
        int code = resp.errCode;  
        System.out.println("onResp errCode>"+code);
        if (payListener!=null) {
            payListener.onPay(code);
            System.out.println("payListener callback");
        }else {
            System.out.println("payListener not callback");
        }
    }
}

注意:若是回調的code一直返回-1
一、請檢查應用包名以及apk 的簽名是否與你提交到微信開放平臺的一致
二、請檢查返回調取微信支付的參數是否正確
大部分緣由是第一種

微信APP支付.png

遺留問題:因爲支付應用的包名不固定WXPayEntryActivity沒法封裝到jar中,須要單獨在支付應用添加.wxapi 這個包名並複製 WXPayEntryActivity到此包中。若是有好的解決方案歡迎留言

微信開發系列文章 http://www.jianshu.com/p/a172a1b69fdd

推薦閱讀
極速開發微信公衆號之微信買單
極速開發微信公衆號之公衆號支付
極速開發微信公衆號之掃碼支付
極速開發微信公衆號之刷卡支付
極速開發微信公衆號之現金紅包
極速開發微信公衆號之模板消息

若是此文章對你有幫助請點擊喜歡告訴我

服務端源碼地址:http://git.oschina.net/javen205/weixin_guide 客戶端源碼地址:https://github.com/Javen205/HelloAndroid

相關文章
相關標籤/搜索