Android支付宝接口集成

Android支付宝接口集成

MobileSecurePayer之外的内容全部整合到MobileSecurePayerHelper之中。

/*
* Copyright (C) 2010 The MobileSecurePay Project
* All right reserved.
* author: [email protected]

*modify: fangle
*/

package com.alipay.android;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.ArrayList;
import java.util.List;

import javax.crypto.Cipher;

import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;

import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.net.Uri;
import android.os.Handler;
import android.os.Message;
import android.util.Base64;

public class MobileSecurePayHelper {
   static final String TAG = "MobileSecurePayHelper" ;

   public static final String PARTNER = "" ;
   public static final String SELLER = "" ;
   public static final String RSA_PRIVATE = "" ;
   public static final String RSA_ALIPAY_PUBLIC = "" ;

   Context mContext = null ;
   Handler mHandler = null ;
   String mUrl = null ;
   String mPath = null ;

   public static String Stream2String(InputStream is) {
       BufferedReader reader = new BufferedReader( new InputStreamReader(is));
       StringBuilder sb = new StringBuilder();
       String line = null ;
       try {
           while ((line = reader.readLine()) != null )
               sb.append(line);
           is.close();
       } catch (IOException e) {
           e.printStackTrace();
       }
       return sb.toString();
   }

   public static JSONObject string2JSON(String str, String split) {
       JSONObject json = new JSONObject();
       try {
           String[] arrStr = str.split(split);
           for ( int i = 0 ; i < arrStr.length; i++) {
               String[] arrKeyValue = arrStr[i].split( "=" );
               json.put(arrKeyValue[ 0 ],
                       arrStr[i].substring(arrKeyValue[ 0 ].length() + 1 ));
           }
       } catch (Exception e) {
           e.printStackTrace();
       }
       return json;
   }

   public static String SendAndWaitResponse(String strReqData, String strUrl) {
       String strResponse = null ;
       ArrayList<BasicNameValuePair> pairs = new ArrayList<BasicNameValuePair>();
       pairs.add( new BasicNameValuePair( "requestData" , strReqData));

       HttpURLConnection conn = null ;
       UrlEncodedFormEntity p_entity;
       try {
           p_entity = new UrlEncodedFormEntity(pairs, "utf-8" );
           URL url = new URL(strUrl);
           conn = (HttpURLConnection) url.openConnection();
           conn.setConnectTimeout( 30 * 1000 );
           conn.setReadTimeout( 30 * 1000 );
           conn.setDoOutput( true );
           conn.addRequestProperty( "Content-type" ,
                   "application/x-www-form-urlencoded;charset=utf-8" );
           conn.connect();

           OutputStream os = conn.getOutputStream();
           p_entity.writeTo(os);
           os.flush();
           InputStream content = conn.getInputStream();
           strResponse = Stream2String(content);
       } catch (IOException e) {
           e.printStackTrace();
       } finally {
           conn.disconnect();
       }
       return strResponse;
   }

   public static boolean urlDownloadToFile(Context context, String strurl,
           String path) {
       boolean bRet = false ;
       try {
           URL url = new URL(strurl);
           HttpURLConnection conn = null ;
           conn = (HttpURLConnection) url.openConnection();
           conn.setConnectTimeout( 30 * 1000 );
           conn.setReadTimeout( 30 * 1000 );
           conn.setDoInput( true );
           conn.connect();
           InputStream is = conn.getInputStream();
           File file = new File(path);
           file.createNewFile();
           FileOutputStream fos = new FileOutputStream(file);
           byte [] temp = new byte [ 1024 ];
           int i = 0 ;
           while ((i = is.read(temp)) > 0 )
               fos.write(temp, 0 , i);
           fos.close();
           is.close();
           bRet = true ;
       } catch (IOException e) {
           e.printStackTrace();
       }
       return bRet;
   }

   public static String RsaEncode(String content, String key) {
       try {
           X509EncodedKeySpec x509 = new X509EncodedKeySpec(Base64.decode(key,
                   Base64.DEFAULT));
           KeyFactory kf = KeyFactory.getInstance( "RSA" );
           PublicKey pubKey = kf.generatePublic(x509);
           Cipher cipher = Cipher.getInstance( "RSA/ECB/PKCS1Padding" );
           cipher.init(Cipher.ENCRYPT_MODE, pubKey);
           byte plaintext[] = content.getBytes( "UTF-8" );
           byte [] output = cipher.doFinal(plaintext);
           return new String(Base64.encode(output, Base64.DEFAULT));
       } catch (Exception e) {
           e.printStackTrace();
       }
       return null ;
   }

   public static String RsaSign(String content, String privateKey) {
       try {
           PKCS8EncodedKeySpec pkcs8 = new PKCS8EncodedKeySpec(Base64.decode(
                   privateKey, Base64.DEFAULT));
           KeyFactory kf = KeyFactory.getInstance( "RSA" );
           PrivateKey priKey = kf.generatePrivate(pkcs8);
           Signature signature = Signature.getInstance( "SHA1WithRSA" );
           signature.initSign(priKey);
           signature.update(content.getBytes( "utf-8" ));
           byte [] signed = signature.sign();
           return new String(Base64.encode(signed, Base64.DEFAULT));
       } catch (Exception e) {
           e.printStackTrace();
       }
       return null ;
   }

   public static boolean RsaCheck(String content, String sign, String publicKey) {
       try {
           KeyFactory keyFactory = KeyFactory.getInstance( "RSA" );
           byte [] encodedKey = Base64.decode(publicKey, Base64.DEFAULT);
           PublicKey pubKey = keyFactory
                   .generatePublic( new X509EncodedKeySpec(encodedKey));
           Signature signature = Signature.getInstance( "SHA1WithRSA" );
           signature.initVerify(pubKey);
           signature.update(content.getBytes( "utf-8" ));
           boolean bverify = signature.verify(Base64.decode(sign,
                   Base64.DEFAULT));
           return bverify;
       } catch (Exception e) {
           e.printStackTrace();
       }
       return false ;
   }

   public MobileSecurePayHelper(Context context, Handler handler) {
       mContext = context;
       mHandler = handler;
   }

   public boolean detectService() {
       boolean isExist = false ;
       List<PackageInfo> pkgList = mContext.getPackageManager()
               .getInstalledPackages( 0 );
       for ( int i = 0 ; i < pkgList.size(); i++) {
           if (pkgList.get(i).packageName
                   .equalsIgnoreCase( "com.alipay.android.app" ))
               isExist = true ;
       }
       return isExist;
   }

   public void downloadAliMSP() {
       JSONObject Resp = null ;
       try {
           JSONObject req = new JSONObject();
           req.put( "action" , "update" );
           JSONObject data = new JSONObject();
           data.put( "platform" , "android" );
           data.put( "version" , "2.2.3" );
           data.put( "partner" , "" );
           req.put( "data" , data);
           Resp = new JSONObject(SendAndWaitResponse(req.toString(),
                   "https://msp.alipay.com/x.htm" ));
           mUrl = Resp.getString( "updateUrl" );
       } catch (JSONException e) {
           e.printStackTrace();
           return ;
       }
       new Thread( new Runnable() {
           public void run() {
               mPath = mContext.getCacheDir().getAbsolutePath() + "/temp.apk" ;
               urlDownloadToFile(mContext, mUrl, mPath);
               Message msg = new Message();
               msg.what = 2 ;
               mHandler.sendMessage(msg);
           }
       }).start();
   }

   public void installAliMSP() {
       if (mPath == null )
           return ;
       try {
           Runtime.getRuntime().exec( "chmod 777 " + mPath);
       } catch (IOException e) {
           e.printStackTrace();
       }
       Intent intent = new Intent(Intent.ACTION_VIEW);
       intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
       intent.setDataAndType(Uri.parse( "file://" + mPath),
               "application/vnd.android.package-archive" );
       mContext.startActivity(intent);
   }
}

集成很简单，一个OnClickListener负责调用支付服务，一个Handler负责处理支付过程中的相应事件：

private Handler m_mspHandler = new Handler() {
   public void handleMessage(Message m) {
       // 1:支付返回
       // 2:支付组件下载完成
       TextView tv = (TextView) findViewById(R.id.order_tips);
       Button bt = (Button) findViewById(R.id.order_ok);
       ProgressBar pb = (ProgressBar) findViewById(R.id.order_wait);
       switch (m.what) {
       case 1 :
           String ret = (String) m.obj;
           String memo = "memo={" ;
           int start = ret.indexOf(memo) + memo.length();
           int end = ret.indexOf( "};result=" );
           memo = ret.substring(start, end);
           m_tips += memo;
           if (memo.indexOf( "付款成功" ) >= 0 )
               m_tips += "\r\n请注意查看短信，您将收到二维码凭证" ;
           tv.setText(m_tips);
           bt.setVisibility( 0 );
           pb.setVisibility( 4 );
           break ;
       case 2 :
           m_tips += "安全支付组件下载完成,开始安装...\r\n" ;
           tv.setText(m_tips);
           m_mspHelper.installAliMSP();
           bt.setVisibility( 0 );
           pb.setVisibility( 4 );
           break ;
       }
   }
};

private OnClickListener m_orderButtonListener = new OnClickListener() {
   public void onClick(View v) {
       String mobile = m_mobileEdt.getText().toString();
       m_tips = "" ;
       TextView tv = (TextView) findViewById(R.id.order_tips);
       Button bt = (Button) findViewById(R.id.order_ok);
       ProgressBar pb = (ProgressBar) findViewById(R.id.order_wait);
       if (mobile.length() != 11 ) {
           m_tips += "无效的收货号码\r\n" ;
           tv.setText(m_tips);
           return ;
       }
       if (!m_date.after(m_today)) {
           m_tips += "订货日期不能早于明天\r\n" ;
           tv.setText(m_tips);
           return ;
       }
       SoapObject request = new SoapObject( "http://airtimes.cn/" ,
               "MakeOrder" );
       request.addProperty( "Uname" , m_intent.getStringExtra( "userid" ));
       request.addProperty( "ProductId" ,
               m_intent.getStringExtra( "item_PID" ));
       request.addProperty( "Sum" , "1" );
       request.addProperty( "PayAmount" ,
               m_intent.getStringExtra( "item_price" ));
       request.addProperty( "SMSMobile" , mobile);
       request.addProperty(
               "ExpireDate" ,
               String.format( "%04d-%02d-%02d" , m_date.get( 1 ),
                       m_date.get( 2 ) + 1 , m_date.get( 5 )));

       // 显示等待条，提交订单信息
       m_tips += "正在创建订单，请稍候...\r\n" ;
       tv.setText(m_tips);
       bt.setVisibility( 4 );
       pb.setVisibility( 0 );

       HttpTransportSE httpTransport = new HttpTransportSE(
               "http://www.android-study.com/serv.asmx" );
       SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
               SoapEnvelope.VER11);
       envelope.dotNet = true ;
       envelope.bodyOut = request;
       String respond;
       try {
           httpTransport.call(request.getNamespace() + request.getName(),
                   envelope);
           if (envelope.getResponse() != null )
               respond = envelope.getResponse().toString();
           else
               respond = "false,null" ;
       } catch (Exception ex) {
           respond = "false," + ex.getMessage();
       }
       if (respond.substring( 0 , 5 ).equals( "false" )) {
           m_tips += "创建订单失败：" + respond.substring( 6 ) + "\r\n" ;
           tv.setText(m_tips);
           bt.setVisibility( 0 );
           pb.setVisibility( 4 );
           return ;
       }

       String msgs[] = respond.split( "[,]" );
       String order;
       m_tips += "创建订单成功，开始支付...\r\n" ;
       tv.setText(m_tips);

       if (!m_mspHelper.detectService()) {
           m_tips += "未安装安全支付组件，开始下载...\r\n" ;
           tv.setText(m_tips);
           m_mspHelper.downloadAliMSP();
           return ;
       }

       order = String.format( "partner=\"%s\"" ,
               MobileSecurePayHelper.PARTNER);
       order += String.format( "&seller=\"%s\"" ,
               MobileSecurePayHelper.SELLER);
       order += String.format( "&out_trade_no=\"%s\"" , msgs[ 1 ]);
       order += String.format( "&subject=\"%s\"" ,
               m_intent.getStringExtra( "item_type" ));
       order += String.format( "&body=\"%s\"" ,
               m_intent.getStringExtra( "item_name" ));
       order += String.format( "&total_fee=\"%s\"" ,
               m_intent.getStringExtra( "item_price" ));
       order += String.format( "¬ify_url=\"%s\"" ,
               "http://www.android-study.com/alipay.aspx" );
       String sign = URLEncoder.encode(MobileSecurePayHelper.RsaSign(
               order, MobileSecurePayHelper.RSA_PRIVATE));
       order += String.format( "&sign=\"%s\"" , sign);
       order += String.format( "&sign_type=\"%s\"" , "RSA" );

       com.alipay.android.MobileSecurePayer msp = new com.alipay.android.MobileSecurePayer();
       if (!msp.pay(order, m_mspHandler, 1 , OrderingActivity. this )) {
           m_tips += "调用安全支付功能失败\r\n" ;
           tv.setText(m_tips);
           bt.setVisibility( 0 );
           pb.setVisibility( 4 );
           return ;
       }
   }
};