支付寶安卓端調用說明

後臺配置

生成密鑰

下載相關鏈接中的RSA密鑰工具
解壓後點擊 支付寶RAS密鑰生成器SHAwithRSA2048_V1.0.bat彈出以下界面

點擊生成RSA密鑰，會在當前文件夾下生成三個密鑰文件

rsa_private_key.pem

私鑰：目前沒有使用到

rsa_private_key_pkcs8.pem

pkcs8格式的私鑰：用於生成簽名，建議放在服務器端

rsa_public_key.pem

公鑰：在支付寶後臺中使用

配置公鑰

登錄支付寶後臺-開發者中心-我的應用-XXX(需要調用支付的應用)-應用信息-開發配置-接口加簽方式

點擊設置應用公鑰，之後將rsa_public_key.pem中的公鑰配置到後臺中即可

代碼實現

支付寶接口的調用需要在線程中實現
調用代碼

/**支付寶支付實現Begin**/
public void payV2() {
    /**
     * 這裏只是爲了方便直接向商戶展示支付寶的整個支付流程；所以Demo中加簽過程直接放在客戶端完成；
     * 真實App裏，privateKey等數據嚴禁放在客戶端，加簽過程務必要放在服務端完成；
     * 防止商戶私密數據泄露，造成不必要的資金損失，及面臨各種安全風險；
     * 
     * orderInfo的獲取必須來自服務端；
     */
     Runnable payRunnable = new Runnable() {
        @Override
        public void run() {
            // 通過http向服務器請求訂單信息
            orderInfo = gson.fromJson(HttpUtils.doPost(url), ZhiFuBean.class);
            boolean rsa2 = (RSA2_PRIVATE.length() > 0);
            // 拼接相關參數(應放在服務端完成)
            Map<String, String> params = OrderInfoUtil2_0.buildOrderParamMap(APPID, rsa2, orderInfo.getOrderInfo());
            String orderParam = OrderInfoUtil2_0.buildOrderParam(params);
            String sign = OrderInfoUtil2_0.getSign(params, RSA2_PRIVATE, rsa2);
            String orderRequest = orderParam + "&" + sign;
            // 調用充值方法
            PayTask alipay = new PayTask(a);
            Map<String, String> result = alipay.payV2(orderRequest, true);
            Log.i("msp", result.toString());
            Message msg = new Message();
            msg.what = SDK_PAY_FLAG;
            msg.obj = result;
            mHandler.sendMessage(msg);
        }

     };
     Thread payThread = new Thread(payRunnable);
     // 啓動線程
     payThread.start();
}
/**支付寶支付支付實現END**/

參數說明

/**支付寶支付變量Begin**/
// 應用ID(在支付寶後臺中可以找到)
public String APPID = Constants.APPID;
// rsa_private_key_pkcs8.pem 密鑰(必須放在服務端)
public String RSA2_PRIVATE = Constants.RSA2_PRIVATE;
// 常量，爲1
private static final int SDK_PAY_FLAG = Constants.SDK_PAY_FLAG;
/**支付寶支付變量END**/

ZhiFuBean.class

public class ZhiFuBean extends RequestBean {
    private OrderInfo orderInfo;

    public OrderInfo getOrderInfo() {
        return orderInfo;
    }

    public void setOrderInfo(OrderInfo orderInfo) {
        this.orderInfo = orderInfo;
    }

}

OrderInfo.class

public class OrderInfo {

    private String app_id; // 應用ID
    private String method; // 接口名稱
    private String charset; // 字符集
    private String sign_type; // 簽名算法
    private String timestamp; // 時間戳
    private String version; // 版本
    private String notify_url; // 回調地址
    private BizContent biz_content; // 請求參數集合

    public String getApp_id() {
        return app_id;
    }

    public void setApp_id(String app_id) {
        this.app_id = app_id;
    }

    public String getMethod() {
        return method;
    }

    public void setMethod(String method) {
        this.method = method;
    }

    public String getCharset() {
        return charset;
    }

    public void setCharset(String charset) {
        this.charset = charset;
    }

    public String getSign_type() {
        return sign_type;
    }

    public void setSign_type(String sign_type) {
        this.sign_type = sign_type;
    }

    public String getTimestamp() {
        return timestamp;
    }

    public void setTimestamp(String timestamp) {
        this.timestamp = timestamp;
    }

    public String getVersion() {
        return version;
    }

    public void setVersion(String version) {
        this.version = version;
    }

    public String getNotify_url() {
        return notify_url;
    }

    public void setNotify_url(String notify_url) {
        this.notify_url = notify_url;
    }

    public BizContent getBiz_content() {
        return biz_content;
    }

    public void setBiz_content(BizContent biz_content) {
        this.biz_content = biz_content;
    }

}

OrderInfoUtil2_0.buildOrderParamMap()

/**
 * 構造支付訂單參數列表
 * @return
 */
public static Map<String, String> buildOrderParamMap(String app_id, boolean rsa2,OrderInfo orderInfo) {
    Map<String, String> keyValues = new HashMap<String, String>();
    keyValues.put("app_id", orderInfo.getApp_id());
    keyValues.put("biz_content", gson.toJson(orderInfo.getBiz_content()).toString());
    keyValues.put("charset", orderInfo.getCharset());
    keyValues.put("method", orderInfo.getMethod());
    keyValues.put("sign_type", orderInfo.getSign_type());
    keyValues.put("timestamp", orderInfo.getTimestamp());
    keyValues.put("version", orderInfo.getVersion());
    keyValues.put("notify_url", orderInfo.getNotify_url());
    return keyValues;
}

OrderInfoUtil2_0.buildOrderParam()

/**
 * 構造支付訂單參數信息
 * 
 * @param map
 * 支付訂單參數
 * @return
 */
public static String buildOrderParam(Map<String, String> map) {
    List<String> keys = new ArrayList<String>(map.keySet());
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < keys.size() - 1; i++) {
        String key = keys.get(i);
        String value = map.get(key);
        sb.append(buildKeyValue(key, value, true));
        sb.append("&");
    }
    String tailKey = keys.get(keys.size() - 1);
    String tailValue = map.get(tailKey);
    sb.append(buildKeyValue(tailKey, tailValue, true));
    return sb.toString();
}

OrderInfoUtil2_0.getSign()

/**
 * 對支付參數信息進行簽名
 * 
 * @param map
 *            待簽名授權信息
 * 
 * @return
 */
public static String getSign(Map<String, String> map, String rsaKey, boolean rsa2) {
    List<String> keys = new ArrayList<String>(map.keySet());
    Collections.sort(keys);
    StringBuilder authInfo = new StringBuilder();
    for (int i = 0; i < keys.size() - 1; i++) {
        String key = keys.get(i);
        String value = map.get(key);
        authInfo.append(buildKeyValue(key, value, false));
        authInfo.append("&");
    }
    String tailKey = keys.get(keys.size() - 1);
    String tailValue = map.get(tailKey);
    authInfo.append(buildKeyValue(tailKey, tailValue, false));
    String oriSign = SignUtils.sign(authInfo.toString(), rsaKey, rsa2);
    String encodedSign = "";
    try {
        encodedSign = URLEncoder.encode(oriSign, "UTF-8");
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    return "sign=" + encodedSign;
}

AndroidManifest.xml需要添加

<activity
    android:name="com.alipay.sdk.app.H5PayActivity"
    android:configChanges="orientation|keyboardHidden|navigation"
    android:exported="false"
    android:screenOrientation="behind" >
</activity>
<activity
    android:name="com.alipay.sdk.auth.AuthActivity"
    android:configChanges="orientation|keyboardHidden|navigation"
    android:exported="false"
    android:screenOrientation="behind" >
 </activity>

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

相關鏈接

開發者文檔
支付寶後臺
RSA密鑰工具