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app/src/main/java/pay/alipay/OrderInfoUtil2_0.java

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+package pay.alipay;
+
+import java.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Random;
+
+public class OrderInfoUtil2_0 {
+
+    /**
+     * 构造支付订单参数列表
+     *
+     * @return
+     */
+    public static Map<String, String> buildOrderParamMap(String app_id, String subject, String body, String tradeNo, String totalAmount, String notifyurl, boolean rsa2) {
+        Map<String, String> keyValues = new HashMap<String, String>();
+
+        keyValues.put("app_id", app_id);
+
+        keyValues.put("biz_content", "{\"timeout_express\":\"30m\",\"product_code\":\"QUICK_MSECURITY_PAY\",\"total_amount\":\"" + totalAmount + "\",\"subject\":\"" + subject + "\",\"body\":\"" + body + "\",\"out_trade_no\":\"" + tradeNo + "\"}");
+
+        keyValues.put("charset", "utf-8");
+
+        keyValues.put("method", "alipay.trade.app.pay");
+
+        keyValues.put("sign_type", rsa2 ? "RSA2" : "RSA");
+
+        keyValues.put("timestamp", getCurFormatTime());
+
+        keyValues.put("notify_url", notifyurl);
+
+        keyValues.put("version", "1.0");
+
+        return keyValues;
+    }
+
+    /**
+     * 构造支付订单参数信息
+     *
+     * @param map 支付订单参数
+     * @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();
+    }
+
+    /**
+     * 拼接键值对
+     *
+     * @param key
+     * @param value
+     * @param isEncode
+     * @return
+     */
+    private static String buildKeyValue(String key, String value, boolean isEncode) {
+        StringBuilder sb = new StringBuilder();
+        sb.append(key);
+        sb.append("=");
+        if (isEncode) {
+            try {
+                sb.append(URLEncoder.encode(value, "UTF-8"));
+            } catch (UnsupportedEncodingException e) {
+                sb.append(value);
+            }
+        } else {
+            sb.append(value);
+        }
+        return sb.toString();
+    }
+
+    /**
+     * 对支付参数信息进行签名
+     *
+     * @param map 待签名授权信息
+     * @return
+     */
+    public static String getSign(Map<String, String> map, String rsaKey, boolean rsa2) {
+        List<String> keys = new ArrayList<String>(map.keySet());
+        // key排序
+        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;
+    }
+
+    /**
+     * 获取当前时间格式化数据
+     *
+     * @return
+     */
+    private static String getCurFormatTime() {
+        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+        Date date = new Date();
+        return format.format(date);
+    }
+
+}