android支付之支付宝支付

先导入jar包alipaySDK-20150818

调用支付宝

AlipayUtils.pay(this,mHandler,"订单信息","订单描述","0.01");

接收支付宝的返回结果

/**
 * 接收支付宝的返回结果
 */
private Handler mHandler = new Handler() {
    public void handleMessage(Message msg) {
        switch (msg.what) {
            case ConstantValues.SDK_PAY_FLAG: {
                PayResult payResult = new PayResult((String) msg.obj);
                // 支付宝返回此次支付结果及加签，建议对支付宝签名信息拿签约时支付宝提供的公钥做验签
                String resultInfo = payResult.getResult();
                String resultStatus = payResult.getResultStatus();
                if (TextUtils.equals(resultStatus, "9000")) {
                    Toast.makeText(MainActivity.this,"支付成功",Toast.LENGTH_SHORT).show();
                } else {
                    if (TextUtils.equals(resultStatus,"8000")) {
                        Toast.makeText(MainActivity.this,"支付结果确认中",Toast.LENGTH_SHORT).show();
                    } else if (TextUtils.equals(resultStatus,"6001")){
                        Toast.makeText(MainActivity.this,"您取消了订单支付",Toast.LENGTH_SHORT).show();
                    }else if (TextUtils.equals(resultStatus,"6002")){
                        Toast.makeText(MainActivity.this,"网络连接出错",Toast.LENGTH_SHORT).show();
                    }else {
                        Toast.makeText(MainActivity.this,"支付失败",Toast.LENGTH_SHORT).show();
                    }
                }
                break;
            }
            default:
                break;
        }
    };
};

以上是在支付页面中的调用↑

下面是几个必须的页面(类名不要改)

1、Base64

public final class Base64 {

    private static final int BASELENGTH = 128;
    private static final int LOOKUPLENGTH = 64;
    private static final int TWENTYFOURBITGROUP = 24;
    private static final int EIGHTBIT = 8;
    private static final int SIXTEENBIT = 16;
    private static final int FOURBYTE = 4;
    private static final int SIGN = -128;
    private static char PAD = '=';
    private static byte[] base64Alphabet = new byte[BASELENGTH];
    private static char[] lookUpBase64Alphabet = new char[LOOKUPLENGTH];

    static {
        for (int i = 0; i < BASELENGTH; ++i) {
            base64Alphabet[i] = -1;
        }
        for (int i = 'Z'; i >= 'A'; i--) {
            base64Alphabet[i] = (byte) (i - 'A');
        }
        for (int i = 'z'; i >= 'a'; i--) {
            base64Alphabet[i] = (byte) (i - 'a' + 26);
        }

        for (int i = '9'; i >= '0'; i--) {
            base64Alphabet[i] = (byte) (i - '0' + 52);
        }

        base64Alphabet['+'] = 62;
        base64Alphabet['/'] = 63;

        for (int i = 0; i <= 25; i++) {
            lookUpBase64Alphabet[i] = (char) ('A' + i);
        }

        for (int i = 26, j = 0; i <= 51; i++, j++) {
            lookUpBase64Alphabet[i] = (char) ('a' + j);
        }

        for (int i = 52, j = 0; i <= 61; i++, j++) {
            lookUpBase64Alphabet[i] = (char) ('0' + j);
        }
        lookUpBase64Alphabet[62] = (char) '+';
        lookUpBase64Alphabet[63] = (char) '/';

    }

    private static boolean isWhiteSpace(char octect) {
        return (octect == 0x20 || octect == 0xd || octect == 0xa || octect == 0x9);
    }

    private static boolean isPad(char octect) {
        return (octect == PAD);
    }

    private static boolean isData(char octect) {
        return (octect < BASELENGTH && base64Alphabet[octect] != -1);
    }

    /**
     * Encodes hex octects into Base64
     * 
     * @param binaryData
     *            Array containing binaryData
     * @return Encoded Base64 array
     */
    public static String encode(byte[] binaryData) {

        if (binaryData == null) {
            return null;
        }

        int lengthDataBits = binaryData.length * EIGHTBIT;
        if (lengthDataBits == 0) {
            return "";
        }

        int fewerThan24bits = lengthDataBits % TWENTYFOURBITGROUP;
        int numberTriplets = lengthDataBits / TWENTYFOURBITGROUP;
        int numberQuartet = fewerThan24bits != 0 ? numberTriplets + 1
                : numberTriplets;
        char encodedData[] = null;

        encodedData = new char[numberQuartet * 4];

        byte k = 0, l = 0, b1 = 0, b2 = 0, b3 = 0;

        int encodedIndex = 0;
        int dataIndex = 0;

        for (int i = 0; i < numberTriplets; i++) {
            b1 = binaryData[dataIndex++];
            b2 = binaryData[dataIndex++];
            b3 = binaryData[dataIndex++];

            l = (byte) (b2 & 0x0f);
            k = (byte) (b1 & 0x03);

            byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2)
                    : (byte) ((b1) >> 2 ^ 0xc0);
            byte val2 = ((b2 & SIGN) == 0) ? (byte) (b2 >> 4)
                    : (byte) ((b2) >> 4 ^ 0xf0);
            byte val3 = ((b3 & SIGN) == 0) ? (byte) (b3 >> 6)
                    : (byte) ((b3) >> 6 ^ 0xfc);

            encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];
            encodedData[encodedIndex++] = lookUpBase64Alphabet[val2 | (k << 4)];
            encodedData[encodedIndex++] = lookUpBase64Alphabet[(l << 2) | val3];
            encodedData[encodedIndex++] = lookUpBase64Alphabet[b3 & 0x3f];
        }

        // form integral number of 6-bit groups
        if (fewerThan24bits == EIGHTBIT) {
            b1 = binaryData[dataIndex];
            k = (byte) (b1 & 0x03);
            
            byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2)
                    : (byte) ((b1) >> 2 ^ 0xc0);
            encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];
            encodedData[encodedIndex++] = lookUpBase64Alphabet[k << 4];
            encodedData[encodedIndex++] = PAD;
            encodedData[encodedIndex++] = PAD;
        } else if (fewerThan24bits == SIXTEENBIT) {
            b1 = binaryData[dataIndex];
            b2 = binaryData[dataIndex + 1];
            l = (byte) (b2 & 0x0f);
            k = (byte) (b1 & 0x03);

            byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2)
                    : (byte) ((b1) >> 2 ^ 0xc0);
            byte val2 = ((b2 & SIGN) == 0) ? (byte) (b2 >> 4)
                    : (byte) ((b2) >> 4 ^ 0xf0);

            encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];
            encodedData[encodedIndex++] = lookUpBase64Alphabet[val2 | (k << 4)];
            encodedData[encodedIndex++] = lookUpBase64Alphabet[l << 2];
            encodedData[encodedIndex++] = PAD;
        }

        return new String(encodedData);
    }

    /**
     * Decodes Base64 data into octects
     * 
     * @param encoded
     *            string containing Base64 data
     * @return Array containind decoded data.
     */
    public static byte[] decode(String encoded) {

        if (encoded == null) {
            return null;
        }

        char[] base64Data = encoded.toCharArray();
        // remove white spaces
        int len = removeWhiteSpace(base64Data);

        if (len % FOURBYTE != 0) {
            return null;// should be divisible by four
        }

        int numberQuadruple = (len / FOURBYTE);

        if (numberQuadruple == 0) {
            return new byte[0];
        }

        byte decodedData[] = null;
        byte b1 = 0, b2 = 0, b3 = 0, b4 = 0;
        char d1 = 0, d2 = 0, d3 = 0, d4 = 0;

        int i = 0;
        int encodedIndex = 0;
        int dataIndex = 0;
        decodedData = new byte[(numberQuadruple) * 3];

        for (; i < numberQuadruple - 1; i++) {

            if (!isData((d1 = base64Data[dataIndex++]))
                    || !isData((d2 = base64Data[dataIndex++]))
                    || !isData((d3 = base64Data[dataIndex++]))
                    || !isData((d4 = base64Data[dataIndex++]))) {
                return null;
            }// if found "no data" just return null

            b1 = base64Alphabet[d1];
            b2 = base64Alphabet[d2];
            b3 = base64Alphabet[d3];
            b4 = base64Alphabet[d4];

            decodedData[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);
            decodedData[encodedIndex++] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));
            decodedData[encodedIndex++] = (byte) (b3 << 6 | b4);
        }

        if (!isData((d1 = base64Data[dataIndex++]))
                || !isData((d2 = base64Data[dataIndex++]))) {
            return null;// if found "no data" just return null
        }

        b1 = base64Alphabet[d1];
        b2 = base64Alphabet[d2];

        d3 = base64Data[dataIndex++];
        d4 = base64Data[dataIndex++];
        if (!isData((d3)) || !isData((d4))) {// Check if they are PAD characters
            if (isPad(d3) && isPad(d4)) {
                if ((b2 & 0xf) != 0)// last 4 bits should be zero
                {
                    return null;
                }
                byte[] tmp = new byte[i * 3 + 1];
                System.arraycopy(decodedData, 0, tmp, 0, i * 3);
                tmp[encodedIndex] = (byte) (b1 << 2 | b2 >> 4);
                return tmp;
            } else if (!isPad(d3) && isPad(d4)) {
                b3 = base64Alphabet[d3];
                if ((b3 & 0x3) != 0)// last 2 bits should be zero
                {
                    return null;
                }
                byte[] tmp = new byte[i * 3 + 2];
                System.arraycopy(decodedData, 0, tmp, 0, i * 3);
                tmp[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);
                tmp[encodedIndex] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));
                return tmp;
            } else {
                return null;
            }
        } else { // No PAD e.g 3cQl
            b3 = base64Alphabet[d3];
            b4 = base64Alphabet[d4];
            decodedData[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);
            decodedData[encodedIndex++] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));
            decodedData[encodedIndex++] = (byte) (b3 << 6 | b4);

        }

        return decodedData;
    }

    /**
     * remove WhiteSpace from MIME containing encoded Base64 data.
     * 
     * @param data
     *            the byte array of base64 data (with WS)
     * @return the new length
     */
    private static int removeWhiteSpace(char[] data) {
        if (data == null) {
            return 0;
        }

        // count characters that's not whitespace
        int newSize = 0;
        int len = data.length;
        for (int i = 0; i < len; i++) {
            if (!isWhiteSpace(data[i])) {
                data[newSize++] = data[i];
            }
        }
        return newSize;
    }
}

2、PayResult

import android.text.TextUtils;

public class PayResult {
    private String resultStatus;
    private String result;
    private String memo;

    public PayResult(String rawResult) {

        if (TextUtils.isEmpty(rawResult))
            return;

        String[] resultParams = rawResult.split(";");
        for (String resultParam : resultParams) {
            if (resultParam.startsWith("resultStatus")) {
                resultStatus = gatValue(resultParam, "resultStatus");
            }
            if (resultParam.startsWith("result")) {
                result = gatValue(resultParam, "result");
            }
            if (resultParam.startsWith("memo")) {
                memo = gatValue(resultParam, "memo");
            }
        }
    }

    @Override
    public String toString() {
        return "resultStatus={" + resultStatus + "};memo={" + memo
                + "};result={" + result + "}";
    }

    private String gatValue(String content, String key) {
        String prefix = key + "={";
        return content.substring(content.indexOf(prefix) + prefix.length(),
                content.lastIndexOf("}"));
    }

    /**
     * @return the resultStatus
     */
    public String getResultStatus() {
        return resultStatus;
    }

    /**
     * @return the memo
     */
    public String getMemo() {
        return memo;
    }

    /**
     * @return the result
     */
    public String getResult() {
        return result;
    }
}

3、SignUtils

import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.spec.PKCS8EncodedKeySpec;

public class SignUtils {

    private static final String ALGORITHM = "RSA";

    private static final String SIGN_ALGORITHMS = "SHA1WithRSA";

    private static final String DEFAULT_CHARSET = "UTF-8";

    public static String sign(String content, String privateKey) {
        try {
            PKCS8EncodedKeySpec priPKCS8 = new PKCS8EncodedKeySpec(
                    Base64.decode(privateKey));
            KeyFactory keyf = KeyFactory.getInstance(ALGORITHM);
            PrivateKey priKey = keyf.generatePrivate(priPKCS8);

            java.security.Signature signature = java.security.Signature
                    .getInstance(SIGN_ALGORITHMS);

            signature.initSign(priKey);
            signature.update(content.getBytes(DEFAULT_CHARSET));

            byte[] signed = signature.sign();

            return Base64.encode(signed);
        } catch (Exception e) {
            e.printStackTrace();
        }

        return null;
    }

}

4、AlipayUtils

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.Random;

import android.os.Handler;
import android.os.Message;

import com.alipay.sdk.app.PayTask;
import com.xh.boke.ConstantValues;
import com.xh.boke.base.BaseActivity;

/**
 * 支付宝支付工具类
 * Created by Administrator on 2015/10/23 0023.
 */
public class AlipayUtils {
    /**
     * call alipay sdk pay. 调用SDK支付
     */
    public static void pay(final BaseActivity activity,final Handler handler,String title,String desc,String price) {
        // 订单
        String orderInfo = getOrderInfo(title,desc,price);

        // 对订单做RSA 签名
        String sign = sign(orderInfo);
        try {
            // 仅需对sign 做URL编码
            sign = URLEncoder.encode(sign, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }

        // 完整的符合支付宝参数规范的订单信息
        final String payInfo = orderInfo + "&sign="" + sign + ""&"
                + getSignType();

        Runnable payRunnable = new Runnable() {

            @Override
            public void run() {
                // 构造PayTask 对象
                PayTask alipay = new PayTask(activity);
                // 调用支付接口，获取支付结果
                String result = alipay.pay(payInfo);

                Message msg = new Message();
                msg.what = ConstantValues.SDK_PAY_FLAG;
                msg.obj = result;
                handler.sendMessage(msg);
            }
        };
        // 必须异步调用
        Thread payThread = new Thread(payRunnable);
        payThread.start();
    }

    /**
     * check whether the device has authentication alipay account.
     * 查询终端设备是否存在支付宝认证账户
     *
     */
    public static void check(final BaseActivity activity,final Handler handler) {
        Runnable checkRunnable = new Runnable() {

            @Override
            public void run() {
                // 构造PayTask 对象
                PayTask payTask = new PayTask(activity);
                // 调用查询接口，获取查询结果
                boolean isExist = payTask.checkAccountIfExist();

                Message msg = new Message();
                msg.what = ConstantValues.SDK_CHECK_FLAG;
                msg.obj = isExist;
                handler.sendMessage(msg);
            }
        };
        Thread checkThread = new Thread(checkRunnable);
        checkThread.start();

    }


    /**
     * create the order info. 创建订单信息
     *
     */
    public static String getOrderInfo(String subject, String body, String price) {
        // 签约合作者身份ID
        String orderInfo = "partner=" + """ + ConstantValues.PARTNER + """;

        // 签约卖家支付宝账号
        orderInfo += "&seller_id=" + """ + ConstantValues.SELLER + """;

        // 商户网站唯一订单号
        orderInfo += "&out_trade_no=" + """ + getOutTradeNo() + """;

        // 商品名称
        orderInfo += "&subject=" + """ + subject + """;

        // 商品详情
        orderInfo += "&body=" + """ + body + """;

        // 商品金额
        orderInfo += "&total_fee=" + """ + price + """;

        // 服务器异步通知页面路径
        orderInfo += "&notify_url=" + """ + "http://notify.msp.hk/notify.htm"
                + """;

        // 服务接口名称， 固定值
        orderInfo += "&service="mobile.securitypay.pay"";

        // 支付类型， 固定值
        orderInfo += "&payment_type="1"";

        // 参数编码， 固定值
        orderInfo += "&_input_charset="utf-8"";

        // 设置未付款交易的超时时间
        // 默认30分钟，一旦超时，该笔交易就会自动被关闭。
        // 取值范围：1m～15d。
        // m-分钟，h-小时，d-天，1c-当天（无论交易何时创建，都在0点关闭）。
        // 该参数数值不接受小数点，如1.5h，可转换为90m。
        orderInfo += "&it_b_pay="30m"";

        // extern_token为经过快登授权获取到的alipay_open_id,带上此参数用户将使用授权的账户进行支付
        // orderInfo += "&extern_token=" + """ + extern_token + """;

        // 支付宝处理完请求后，当前页面跳转到商户指定页面的路径，可空
        orderInfo += "&return_url="m.alipay.com"";

        // 调用银行卡支付，需配置此参数，参与签名， 固定值 （需要签约《无线银行卡快捷支付》才能使用）
        // orderInfo += "&paymethod="expressGateway"";

        return orderInfo;
    }

    /**
     * get the out_trade_no for an order. 生成商户订单号，该值在商户端应保持唯一（可自定义格式规范）
     *
     */
    public static String getOutTradeNo() {
        SimpleDateFormat format = new SimpleDateFormat("MMddHHmmss",
                Locale.getDefault());
        Date date = new Date();
        String key = format.format(date);

        Random r = new Random();
        key = key + r.nextInt();
        key = key.substring(0, 15);
        return key;
    }

    /**
     * sign the order info. 对订单信息进行签名
     *
     * @param content
     *            待签名订单信息
     */
    public static String sign(String content) {
        return SignUtils.sign(content, ConstantValues.RSA_PRIVATE);
    }

    /**
     * get the sign type we use. 获取签名方式
     *
     */
    public static String getSignType() {
        return "sign_type="RSA"";
    }
}

下面是支付宝商户的配置信息

/**
 * 常量
 * Created by Administrator on 2015/10/23 0023.
 */
public class ConstantValues {
    /** 支付宝支付 */
    //商户PID
    public static final String PARTNER = "";
    //商户收款账号
    public static final String SELLER = "";
    //商户私钥，pkcs8格式
    public static final String RSA_PRIVATE = "";
    //支付宝公钥
    public static final String RSA_PUBLIC = "";
    public static final int SDK_PAY_FLAG = 1;
    public static final int SDK_CHECK_FLAG = 2;
}

获取公钥和私钥

1、获取公钥和私钥的方法

2、如何上传公钥

另外，在Android Manifest.xml 里面加上这句，在没有安装支付宝的情况下可以跳转一个H5页面进行支付

<!--没安装支付宝时弹出的支付页面-->
<activity
    android:name="com.alipay.sdk.app.H5PayActivity"
    android:configChanges="orientation|keyboardHidden|navigation"
    android:exported="false"
    android:screenOrientation="behind"
    android:windowSoftInputMode="adjustResize|stateHidden" >
</activity>