Android应用集成支付宝接口的简化

拿到支付宝接口的andriod demo后有点无语，集成一个支付服务而已，要在十几个java类之间引用来引用去，这样不仅容易导致应用本身代码结构的复杂化，调试起来也很累，于是操刀改造之：

该删的删，该改写的改写，MobileSecurePayer之外的内容全部整合到MobileSecurePayerHelper之中。

[代码]java代码：

001 /*
002  * Copyright (C) 2010 The MobileSecurePay Project
003  * All right reserved.
004  * author: shiqun.shi@alipay.com
005
006  *modify: fangle
007  */
008
009 package com.alipay.android;
010
011 import java.io.BufferedReader;
012 import java.io.File;
013 import java.io.FileOutputStream;
014 import java.io.IOException;
015 import java.io.InputStream;
016 import java.io.InputStreamReader;
017 import java.io.OutputStream;
018 import java.net.HttpURLConnection;
019 import java.net.URL;
020 import java.security.KeyFactory;
021 import java.security.PrivateKey;
022 import java.security.PublicKey;
023 import java.security.Signature;
024 import java.security.spec.PKCS8EncodedKeySpec;
025 import java.security.spec.X509EncodedKeySpec;
026 import java.util.ArrayList;
027 import java.util.List;
028
029 import javax.crypto.Cipher;
030
031 import org.apache.http.client.entity.UrlEncodedFormEntity;
032 import org.apache.http.message.BasicNameValuePair;
033 import org.json.JSONException;
034 import org.json.JSONObject;
035
036 import android.content.Context;
037 import android.content.Intent;
038 import android.content.pm.PackageInfo;
039 import android.net.Uri;
040 import android.os.Handler;
041 import android.os.Message;
042 import android.util.Base64;
043
044 public class MobileSecurePayHelper {
045     static final String TAG = "MobileSecurePayHelper";
046
047     public static final String PARTNER = "";
048     public static final String SELLER = "";
049     public static final String RSA_PRIVATE = "";
050     public static final String RSA_ALIPAY_PUBLIC = "";
051
052     Context mContext = null;
053     Handler mHandler = null;
054     String mUrl = null;
055     String mPath = null;
056
057     public static String Stream2String(InputStream is) {
058         BufferedReader reader = new BufferedReader(new InputStreamReader(is));
059         StringBuilder sb = new StringBuilder();
060         String line = null;
061         try {
062             while ((line = reader.readLine()) != null)
063                 sb.append(line);
064             is.close();
065         } catch (IOException e) {
066             e.printStackTrace();
067         }
068         return sb.toString();
069     }
070
071     public static JSONObject string2JSON(String str, String split) {
072         JSONObject json = new JSONObject();
073         try {
074             String[] arrStr = str.split(split);
075             for (int i = 0; i < arrStr.length; i++) {
076                 String[] arrKeyValue = arrStr[i].split("=");
077                 json.put(arrKeyValue[0],
078                         arrStr[i].substring(arrKeyValue[0].length() + 1));
079             }
080         } catch (Exception e) {
081             e.printStackTrace();
082         }
083         return json;
084     }
085
086     public static String SendAndWaitResponse(String strReqData, String strUrl) {
087         String strResponse = null;
088         ArrayList<BasicNameValuePair> pairs = new ArrayList<BasicNameValuePair>();
089         pairs.add(new BasicNameValuePair("requestData", strReqData));
090
091         HttpURLConnection conn = null;
092         UrlEncodedFormEntity p_entity;
093         try {
094             p_entity = new UrlEncodedFormEntity(pairs, "utf-8");
095             URL url = new URL(strUrl);
096             conn = (HttpURLConnection) url.openConnection();
097             conn.setConnectTimeout(30 * 1000);
098             conn.setReadTimeout(30 * 1000);
099             conn.setDoOutput(true);
100             conn.addRequestProperty("Content-type",
101                     "application/x-www-form-urlencoded;charset=utf-8");
102             conn.connect();
103
104             OutputStream os = conn.getOutputStream();
105             p_entity.writeTo(os);
106             os.flush();
107             InputStream content = conn.getInputStream();
108             strResponse = Stream2String(content);
109         } catch (IOException e) {
110             e.printStackTrace();
111         } finally {
112             conn.disconnect();
113         }
114         return strResponse;
115     }
116
117     public static boolean urlDownloadToFile(Context context, String strurl,
118             String path) {
119         boolean bRet = false;
120         try {
121             URL url = new URL(strurl);
122             HttpURLConnection conn = null;
123             conn = (HttpURLConnection) url.openConnection();
124             conn.setConnectTimeout(30 * 1000);
125             conn.setReadTimeout(30 * 1000);
126             conn.setDoInput(true);
127             conn.connect();
128             InputStream is = conn.getInputStream();
129             File file = new File(path);
130             file.createNewFile();
131             FileOutputStream fos = new FileOutputStream(file);
132             byte[] temp = new byte[1024];
133             int i = 0;
134             while ((i = is.read(temp)) > 0)
135                 fos.write(temp, 0, i);
136             fos.close();
137             is.close();
138             bRet = true;
139         } catch (IOException e) {
140             e.printStackTrace();
141         }
142         return bRet;
143     }
144
145     public static String RsaEncode(String content, String key) {
146         try {
147             X509EncodedKeySpec x509 = new X509EncodedKeySpec(Base64.decode(key,
148                     Base64.DEFAULT));
149             KeyFactory kf = KeyFactory.getInstance("RSA");
150             PublicKey pubKey = kf.generatePublic(x509);
151             Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
152             cipher.init(Cipher.ENCRYPT_MODE, pubKey);
153             byte plaintext[] = content.getBytes("UTF-8");
154             byte[] output = cipher.doFinal(plaintext);
155             return new String(Base64.encode(output, Base64.DEFAULT));
156         } catch (Exception e) {
157             e.printStackTrace();
158         }
159         return null;
160     }
161
162     public static String RsaSign(String content, String privateKey) {
163         try {
164             PKCS8EncodedKeySpec pkcs8 = new PKCS8EncodedKeySpec(Base64.decode(
165                     privateKey, Base64.DEFAULT));
166             KeyFactory kf = KeyFactory.getInstance("RSA");
167             PrivateKey priKey = kf.generatePrivate(pkcs8);
168             Signature signature = Signature.getInstance("SHA1WithRSA");
169             signature.initSign(priKey);
170             signature.update(content.getBytes("utf-8"));
171             byte[] signed = signature.sign();
172             return new String(Base64.encode(signed, Base64.DEFAULT));
173         } catch (Exception e) {
174             e.printStackTrace();
175         }
176         return null;
177     }
178
179     public static boolean RsaCheck(String content, String sign, String publicKey) {
180         try {
181             KeyFactory keyFactory = KeyFactory.getInstance("RSA");
182             byte[] encodedKey = Base64.decode(publicKey, Base64.DEFAULT);
183             PublicKey pubKey = keyFactory
184                     .generatePublic(new X509EncodedKeySpec(encodedKey));
185             Signature signature = Signature.getInstance("SHA1WithRSA");
186             signature.initVerify(pubKey);
187             signature.update(content.getBytes("utf-8"));
188             boolean bverify = signature.verify(Base64.decode(sign,
189                     Base64.DEFAULT));
190             return bverify;
191         } catch (Exception e) {
192             e.printStackTrace();
193         }
194         return false;
195     }
196
197     public MobileSecurePayHelper(Context context, Handler handler) {
198         mContext = context;
199         mHandler = handler;
200     }
201
202     public boolean detectService() {
203         boolean isExist = false;
204         List<PackageInfo> pkgList = mContext.getPackageManager()
205                 .getInstalledPackages(0);
206         for (int i = 0; i < pkgList.size(); i++) {
207             if (pkgList.get(i).packageName
208                     .equalsIgnoreCase("com.alipay.android.app"))
209                 isExist = true;
210         }
211         return isExist;
212     }
213
214     public void downloadAliMSP() {
215         JSONObject Resp = null;
216         try {
217             JSONObject req = new JSONObject();
218             req.put("action", "update");
219             JSONObject data = new JSONObject();
220             data.put("platform", "android");
221             data.put("version", "2.2.3");
222             data.put("partner", "");
223             req.put("data", data);
224             Resp = new JSONObject(SendAndWaitResponse(req.toString(),
225                     "https://msp.alipay.com/x.htm"));
226             mUrl = Resp.getString("updateUrl");
227         } catch (JSONException e) {
228             e.printStackTrace();
229             return;
230         }
231         new Thread(new Runnable() {
232             public void run() {
233                 mPath = mContext.getCacheDir().getAbsolutePath() + "/temp.apk";
234                 urlDownloadToFile(mContext, mUrl, mPath);
235                 Message msg = new Message();
236                 msg.what = 2;
237                 mHandler.sendMessage(msg);
238             }
239         }).start();
240     }
241
242     public void installAliMSP() {
243         if (mPath == null)
244             return;
245         try {
246             Runtime.getRuntime().exec("chmod 777 " + mPath);
247         } catch (IOException e) {
248             e.printStackTrace();
249         }
250         Intent intent = new Intent(Intent.ACTION_VIEW);
251         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
252         intent.setDataAndType(Uri.parse("file://" + mPath),
253                 "application/vnd.android.package-archive");
254         mContext.startActivity(intent);
255     }
256 }

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：

[代码]java代码：

view source print ?

001	private Handler m_mspHandler = new Handler() {

002	public void handleMessage(Message m) {

003

// 1:支付返回

004	// 2:支付组件下载完成

005	TextView tv = (TextView) findViewById(R.id.order_tips);

006	Button bt = (Button) findViewById(R.id.order_ok);

007	ProgressBar pb = (ProgressBar) findViewById(R.id.order_wait);

008	switch (m.what) {

009

case 1:

010	String ret = (String) m.obj;

011	String memo = "memo={";

012	int start = ret.indexOf(memo) + memo.length();

013	int end = ret.indexOf("};result=");

014	memo = ret.substring(start, end);

015	m_tips += memo;

016	if (memo.indexOf("付款成功") >= 0)

017	m_tips += "\r\n请注意查看短信，您将收到二维码凭证";

018	tv.setText(m_tips);

019	bt.setVisibility(0);

020	pb.setVisibility(4);

021

break;

022

case 2:

023	m_tips += "安全支付组件下载完成,开始安装...\r\n";

024	tv.setText(m_tips);

025	m_mspHelper.installAliMSP();

026	bt.setVisibility(0);

027	pb.setVisibility(4);

028

break;

029

}

030

}

031

};

032

033	private OnClickListener m_orderButtonListener = new OnClickListener() {

034	public void onClick(View v) {

035	String mobile = m_mobileEdt.getText().toString();

036	m_tips = "";

037	TextView tv = (TextView) findViewById(R.id.order_tips);

038	Button bt = (Button) findViewById(R.id.order_ok);

039	ProgressBar pb = (ProgressBar) findViewById(R.id.order_wait);

040	if (mobile.length() != 11) {

041	m_tips += "无效的收货号码\r\n";

042	tv.setText(m_tips);

043

return;

044

}

045	if (!m_date.after(m_today)) {

046	m_tips += "订货日期不能早于明天\r\n";

047	tv.setText(m_tips);

048

return;

049

}

050	SoapObject request = new SoapObject("http://airtimes.cn/",

051	"MakeOrder");

052	request.addProperty("Uname", m_intent.getStringExtra("userid"));

053	request.addProperty("ProductId",

054	m_intent.getStringExtra("item_PID"));

055	request.addProperty("Sum", "1");

056	request.addProperty("PayAmount",

057	m_intent.getStringExtra("item_price"));

058	request.addProperty("SMSMobile", mobile);

059	request.addProperty(

060	"ExpireDate",

061	String.format("%04d-%02d-%02d", m_date.get(1),

062	m_date.get(2) + 1, m_date.get(5)));

063

064	// 显示等待条，提交订单信息

065	m_tips += "正在创建订单，请稍候...\r\n";

066	tv.setText(m_tips);

067	bt.setVisibility(4);

068	pb.setVisibility(0);

069

070	HttpTransportSE httpTransport = new HttpTransportSE(

071	"http://www.android-study.com/serv.asmx");

072	SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(

073	SoapEnvelope.VER11);

074	envelope.dotNet = true;

075	envelope.bodyOut = request;

076	String respond;

077

try {

078	httpTransport.call(request.getNamespace() + request.getName(),

079	envelope);

080	if (envelope.getResponse() != null)

081	respond = envelope.getResponse().toString();

082

else

083	respond = "false,null";

084	} catch (Exception ex) {

085	respond = "false," + ex.getMessage();

086

}

087	if (respond.substring(0, 5).equals("false")) {

088	m_tips += "创建订单失败：" + respond.substring(6) + "\r\n";

089	tv.setText(m_tips);

090	bt.setVisibility(0);

091	pb.setVisibility(4);

092

return;

093

}

094

095	String msgs[] = respond.split("[,]");

096	String order;

097	m_tips += "创建订单成功，开始支付...\r\n";

098	tv.setText(m_tips);

099

100	if (!m_mspHelper.detectService()) {

101	m_tips += "未安装安全支付组件，开始下载...\r\n";

102	tv.setText(m_tips);

103	m_mspHelper.downloadAliMSP();

104

return;

105

}

106

107	order = String.format("partner=\"%s\"",

108	MobileSecurePayHelper.PARTNER);

109	order += String.format("&seller=\"%s\"",

110	MobileSecurePayHelper.SELLER);

111	order += String.format("&out_trade_no=\"%s\"", msgs[1]);

112	order += String.format("&subject=\"%s\"",

113	m_intent.getStringExtra("item_type"));

114	order += String.format("&body=\"%s\"",

115	m_intent.getStringExtra("item_name"));

116	order += String.format("&total_fee=\"%s\"",

117	m_intent.getStringExtra("item_price"));

118	order += String.format("¬ify_url=\"%s\"",

119	"http://www.android-study.com/alipay.aspx");

120	String sign = URLEncoder.encode(MobileSecurePayHelper.RsaSign(

121	order, MobileSecurePayHelper.RSA_PRIVATE));

122	order += String.format("&sign=\"%s\"", sign);

123	order += String.format("&sign_type=\"%s\"", "RSA");

124

125	com.alipay.android.MobileSecurePayer msp = new com.alipay.android.MobileSecurePayer();

126	if (!msp.pay(order, m_mspHandler, 1, OrderingActivity.this)) {

127	m_tips += "调用安全支付功能失败\r\n";

128	tv.setText(m_tips);

129	bt.setVisibility(0);

130	pb.setVisibility(4);

131

return;

132

}

133

}

134

};