最近在做android～，恩，就说这么多吧
/**
* 解析远程模拟提交后返回的信息，获得token
* @param text 要解析的字符串
* @return 解析结果
* @throws Exception
*/
public static String getRequestToken(String text) throws Exception {
String request_token = "";
//以“&”字符切割字符串
String[] strSplitText = text.split("&");
//把切割后的字符串数组变成变量与数值组合的字典数组
Map<String, String> paraText = new HashMap<String, String>();
for (int i = 0; i < strSplitText.length; i++) {
//获得第一个=字符的位置
int nPos = strSplitText[i].indexOf("=");
//获得字符串长度
int nLen = strSplitText[i].length();
//获得变量名
String strKey = strSplitText[i].substring(0, nPos);
//获得数值
String strValue = strSplitText[i].substring(nPos+1,nLen);
//放入MAP类中
paraText.put(strKey, strValue);
}
if (paraText.get("res_data") != null) {
String res_data = paraText.get("res_data");
//解析加密部分字符串（RSA与MD5区别仅此一句）
if(AlipayConfig.sign_type.equals("0001")) {
res_data = RSA.decrypt(res_data, AlipayConfig.private_key, AlipayConfig.input_charset);
}
//token从res_data中解析出来（也就是说res_data中已经包含token的内容）
Document document = DocumentHelper.parseText(res_data);
request_token = document.selectSingleNode( "//direct_trade_create_res/request_token" ).getText();
}
return request_token;
}res_data = RSA.decrypt(res_data, AlipayConfig.private_key, AlipayConfig.input_charset);
Document document = DocumentHelper.parseText(res_data);
request_token = document.selectSingleNode( "//direct_trade_create_res/request_token" ).getText();Log.d("res_data", res_data);
request_token = res_data.substring(res_data.indexOf("<?"));
int startIndex = request_token.indexOf("<request_token>");
if (startIndex > -1) {
int temp = "<request_token>".length();
String start = request_token.substring(temp+startIndex, temp+startIndex+22);
Log.d("start", start);
int endIndex = request_token.indexOf("</request_token>");
String end = request_token.substring(endIndex - 18, endIndex);
Log.d("end", end);
return start+end;
}
Log.d("request_token", request_token);
return null;<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="@+id/top_bar"
android:layout_width="match_parent"
android:layout_height="55dp"
android:layout_alignParentTop="true"
android:background="@color/light_black"
android:padding="4dp">
<TextView
android:id="@+id/back_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="4dp
android:gravity="center"
android:padding="6dp"
android:text="@string/home_back"
android:textColor="@drawable/top_bar_selector"
android:textSize="20sp" />
<TextView
android:id="@+id/main_app_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="支付宝网页版"
android:textColor="@android:color/white"
android:textSize="22sp" />
</RelativeLayout>
<WebView
android:id="@+id/webview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/top_bar"
android:scrollbars="none" />
</RelativeLayout>
webView.getSettings().setJavaScriptEnabled(true);//允许webkit执行js代码；
webView.setWebChromeClient(new WebChromeClient() {
@Override
public boolean onJsAlert(WebView view, String url, String message,
JsResult result) {
return super.onJsAlert(view, url, message, result);
}
});
webView.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int newProgress) {
super.onProgressChanged(view, newProgress);
}
});
webView.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return super.shouldOverrideUrlLoading(view, url);
}
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
if (progressDialog != null) {
progressDialog.dismiss();
}
}
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
}
});public static String getAliPayWAPOrderBodyInfor(String subject, String price, String refNo, String SUCCESS_URL, String NOTIFY_URL, String userid) {
String orderInfor = "<direct_trade_create_req><su" +
"bject>" + subject +
"</subject><out_trade_no>" + "1282889689801" + "</out_trade_no><total_fee>" + price + "</tot" +
"al_fee><seller_account_name>" + AliPayUtil.SELLER + "</seller_account_name><call_" +
"back_url>" + SUCCESS_URL + "</call_back_" +
"url><notify_url>" + NOTIFY_URL + "</notify_url><out_user>" + userid + "</out_user><pay_expire>3600</pay_expire></direct_trade_create" +
"_req>";
return orderInfor;
}public static Map<String, String> getAccessTokenParamsMap() {
Map<String, String> sParaTemp = new HashMap<String, String>();
sParaTemp.put("service", "alipay.wap.trade.create.direct");
sParaTemp.put("partner", AliPayUtil.PARTNER);//这里换成你的pid
sParaTemp.put("sec_id", "0001");//这是RSA加密
sParaTemp.put("format", "xml");
sParaTemp.put("v", "2.0");
sParaTemp.put("req_id", UtilDate.getOrderNum());//这个方法可以把util包里面的这个UtilDate.java拿过来，当然了没必要的话直接把相关的方法拿过来
return sParaTemp;
}
public static Map<String, String> getBillParamsMap() {
Map<String, String> sParaTemp = new HashMap<String, String>();
sParaTemp.put("service", "alipay.wap.auth.authAndExecute");
sParaTemp.put("partner", AliPayUtil.PARTNER);//这里换成你的pid
sParaTemp.put("sec_id", "0001");
sParaTemp.put("format", "xml");
sParaTemp.put("v", "2.0");
return sParaTemp;
}
/**
* 把数组所有元素排序，并按照“参数=参数值”的模式用“&”字符拼接成字符串
* @param params 需要排序并参与字符拼接的参数组
* @return 拼接后字符串
*/
public static String createLinkString(Map<String, String> params) {
List<String> keys = new ArrayList<String>(params.keySet());
Collections.sort(keys);
String prestr = "";
for (int i = 0; i < keys.size(); i++) {
String key = keys.get(i);
String value = params.get(key);
if (i == keys.size() - 1) {//拼接时，不包括最后一个&字符
prestr = prestr + key + "=" + value;
} else {
prestr = prestr + key + "=" + value + "&";
}
}
return prestr;
}
public static String buildRequestMysign(Map<String, String> sPara) {
String prestr = AlipayCore.createLinkString(sPara); //把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串
String mysign = "";
mysign = sign(prestr, private_key, "utf-8");
return mysign;
}<pre name="code" class="html">Map<String, String> sParaTemp = AliPayUtil.getAccessTokenParamsMap();
sParaTemp.put("req_data", RSA.getAliPayWAPOrderBodyInfor(SUBJECT, price, "1282889689801", SUCCESS_URL, NOTIFY_URL, userid));
//生成签名结果
String mysign = RSA.buildRequestMysign(sParaTemp);
//签名结果与签名方式加入请求提交参数组中
sParaTemp.put("sign", mysign);private List<NameValuePair> generatNameValuePair(Map<String, String> properties) {
List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(properties.size());
for (Map.Entry<String, String> entry : properties.entrySet()) {
nameValuePair.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
return nameValuePair;
} String dec = "";
try {
dec = URLDecoder.decode(result, "utf-8");//请将result换成你的请求结果
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
return;
}
String ret;
try {
ret = RSA.getRequestToken(dec);
Log.d("ret", ret);
if (ret!=null) {
wapPay(ret);
} else {
//message
return;
}
} catch (Exception e) {
e.printStackTrace();
return;
}private void wapPay(String token) {
Map<String, String> sParaTemp = RSA.getBillParamsMap();
String req_data = "<auth_and_execute_req><request_token>" + token + "</request_token></auth_and_execute_req>";
sParaTemp.put("req_data", req_data);
String mysign = RSA.buildRequestMysign(sParaTemp);
sParaTemp.put("sign", mysign);
List<NameValuePair> paramspost = generatNameValuePair(sParaTemp);
String url = "http://wappaygw.alipay.com/service/rest.htm?" + URLEncodedUtils.format(paramspost, "UTF-8");
webView.loadUrl(url);
}
【android仿系列进阶篇】android 支付宝手机网页支付
原文：http://blog.csdn.net/joveth/article/details/44040165