Java代碼

/**

* 根據訂單生成支付寶接口URL.

* @param httpRequest

* @param order 訂單實例

* @return

* @throws Exception

*/

public static String makeOrderAlipayUrl(HttpServletRequest httpRequest,Order order) throws Exception {

HashMap hm = new HashMap();

hm.put("_input_charset",httpRequest.getCharacterEncoding());//采用相同的編碼方式

hm.put("body","您在www.xxx.com上的訂單");//填寫在跳到支付寶頁面上顯示的付款內容信息

hm.put("discount","-5");//填寫折扣信息 -5表示抵扣5元

hm.put("logistics_fee","10");//物流費用

hm.put("logistics_payment","BUYER_PAY");//物流費用支付人 BUYER_PAY=買家支付物流費用

hm.put("logistics_type","EXPRESS");//物流方式

hm.put("notify_url","http://www.xxx.com/notifyurl.jsp");//客戶付款后,支付寶調用的頁面

hm.put("out_trade_no",order.getId());//外部交易號,最好具有唯一性,在獲取支付寶發來的付款信息時使用.

hm.put("partner",partnerId);//partnerId(合作伙伴ID)

hm.put("agent",partnerId);//partnerId(合作伙伴ID)

hm.put("payment_type","1");//支付類型 1=商品購買,2=服務購買,...

hm.put("price","105.30");//訂單金額信息

hm.put("quantity","1");//訂單商品數量,一般都是寫1,它是按照整個訂單包來計算

hm.put("return_url","http://www.xxx.com/ReturnUrl.jsp");//客戶付款成功后,顯示給客戶的頁面

hm.put("seller_email","alipay@xxx.com");//你的支付寶賬戶email

hm.put("service","create_direct_pay_by_user");//create_direct_pay_by_user=直接付款,trade_create_by_buyer 擔保付款

hm.put("subject","www.xxx.com的訂單");//填寫在跳到支付寶頁面上顯示的付款標題信息

String payGateway = "https://www.alipay.com/cooperate/gateway.do?";//跳轉到支付寶的url頭

return makeUrl(hm,securityCode,httpRequest.getCharacterEncoding(),payGateway);//securityCode(安全碼)

}

/**

* 根據傳入的參數生成alipay的支付URL

* @param hm 參數值

* @param securityCode 安全碼

* @param charset 編碼

* @param payGateway 支付寶gateway

* @return

*/

public static String makeUrl(HashMap hm,String securityCode,String charset,String payGateway) throws Exception{

List keys = new ArrayList(hm.keySet());

Collections.sort(keys);//支付寶要求參數必須按字母排序

StringBuffer content = new StringBuffer();

for (int i = 0; i < keys.size(); i++) {

content.append((String) keys.get(i));

content.append("=");

content.append((String) hm.get((String) keys.get(i)));

if (i != keys.size() - 1) {

content.append("&");

}

}

content.append(securityCode);

String sign = md5(content.toString(),charset);

content.delete(0,content.length());

content.append(payGateway);

for (int i = 0; i < keys.size(); i++) {

content.append(keys.get(i));

content.append("=");

content.append(URLEncoder.encode((String) hm.get(keys.get(i)), charset));

content.append("&");

}

content.append("sign=");

content.append(sign);

content.append("&sign_type=MD5");

keys.clear();

keys = null;

return content.toString();

}

/**

* 生成md5編碼字符串.

* @param str 源字符串

* @param charset 編碼方式

* @return

*

*/

public static String md5(String str,String charset) {

if (str == null)

return null;

char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',

'a', 'b', 'c', 'd', 'e', 'f' };

MessageDigest md5MessageDigest = null;

byte[] md5Bytes = null;

char md5Chars[] = null;

byte[] strBytes = null;

try {

strBytes = str.getBytes(charset);

md5MessageDigest = MessageDigest.getInstance("MD5");

md5MessageDigest.update(strBytes);

md5Bytes = md5MessageDigest.digest();

int j = md5Bytes.length;

md5Chars = new char[j * 2];

int k = 0;

for (int i = 0; i < j; i++) {

byte md5Byte = md5Bytes[i];

md5Chars[k++] = hexDigits[md5Byte >>> 4 & 0xf];

md5Chars[k++] = hexDigits[md5Byte & 0xf];

}

return new String(md5Chars);

} catch (NoSuchAlgorithmException e) {

//Log.output(e.toString(), Log.STD_ERR);

return null;

} catch (UnsupportedEncodingException e) {

//Log.output(e.toString(), Log.STD_ERR);

return null;

} finally {

md5MessageDigest = null;

strBytes = null;

md5Bytes = null;

}

}

/**

* 根據訂單生成支付寶接口URL.

* @param httpRequest

* @param order 訂單實例

* @return

* @throws Exception

*/

public static String makeOrderAlipayUrl(HttpServletRequest httpRequest,Order order) throws Exception {

HashMap hm = new HashMap();

hm.put("_input_charset",httpRequest.getCharacterEncoding());//采用相同的編碼方式

hm.put("body","您在www.xxx.com上的訂單");//填寫在跳到支付寶頁面上顯示的付款內容信息

hm.put("discount","-5");//填寫折扣信息 -5表示抵扣5元

hm.put("logistics_fee","10");//物流費用

hm.put("logistics_payment","BUYER_PAY");//物流費用支付人 BUYER_PAY=買家支付物流費用

hm.put("logistics_type","EXPRESS");//物流方式

hm.put("notify_url","http://www.xxx.com/notifyurl.jsp");//客戶付款后,支付寶調用的頁面

hm.put("out_trade_no",order.getId());//外部交易號,最好具有唯一性,在獲取支付寶發來的付款信息時使用.

hm.put("partner",partnerId);//partnerId(合作伙伴ID)

hm.put("agent",partnerId);//partnerId(合作伙伴ID)

hm.put("payment_type","1");//支付類型 1=商品購買,2=服務購買,...

hm.put("price","105.30");//訂單金額信息

hm.put("quantity","1");//訂單商品數量,一般都是寫1,它是按照整個訂單包來計算

hm.put("return_url","http://www.xxx.com/ReturnUrl.jsp");//客戶付款成功后,顯示給客戶的頁面

hm.put("seller_email","alipay@xxx.com");//你的支付寶賬戶email

hm.put("service","create_direct_pay_by_user");//create_direct_pay_by_user=直接付款,trade_create_by_buyer 擔保付款

hm.put("subject","www.xxx.com的訂單");//填寫在跳到支付寶頁面上顯示的付款標題信息

String payGateway = "https://www.alipay.com/cooperate/gateway.do?";//跳轉到支付寶的url頭

return makeUrl(hm,securityCode,httpRequest.getCharacterEncoding(),payGateway);//securityCode(安全碼)

}

/**

* 根據傳入的參數生成alipay的支付URL

* @param hm 參數值

* @param securityCode 安全碼

* @param charset 編碼

* @param payGateway 支付寶gateway

* @return

*/

public static String makeUrl(HashMap hm,String securityCode,String charset,String payGateway) throws Exception{

List keys = new ArrayList(hm.keySet());

Collections.sort(keys);//支付寶要求參數必須按字母排序

StringBuffer content = new StringBuffer();

for (int i = 0; i < keys.size(); i++) {

content.append((String) keys.get(i));

content.append("=");

content.append((String) hm.get((String) keys.get(i)));

if (i != keys.size() - 1) {

content.append("&");

}

}

content.append(securityCode);

String sign = md5(content.toString(),charset);

content.delete(0,content.length());

content.append(payGateway);

for (int i = 0; i < keys.size(); i++) {

content.append(keys.get(i));

content.append("=");

content.append(URLEncoder.encode((String) hm.get(keys.get(i)), charset));

content.append("&");

}

content.append("sign=");

content.append(sign);

content.append("&sign_type=MD5");

keys.clear();

keys = null;

return content.toString();

}

/**

* 生成md5編碼字符串.

* @param str 源字符串

* @param charset 編碼方式

* @return

*

*/

public static String md5(String str,String charset) {

if (str == null)

return null;

char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',

'a', 'b', 'c', 'd', 'e', 'f' };

MessageDigest md5MessageDigest = null;

byte[] md5Bytes = null;

char md5Chars[] = null;

byte[] strBytes = null;

try {

strBytes = str.getBytes(charset);

md5MessageDigest = MessageDigest.getInstance("MD5");

md5MessageDigest.update(strBytes);

md5Bytes = md5MessageDigest.digest();

int j = md5Bytes.length;

md5Chars = new char[j * 2];

int k = 0;

for (int i = 0; i < j; i++) {

byte md5Byte = md5Bytes[i];

md5Chars[k++] = hexDigits[md5Byte >>> 4 & 0xf];

md5Chars[k++] = hexDigits[md5Byte & 0xf];

}

return new String(md5Chars);

} catch (NoSuchAlgorithmException e) {

//Log.output(e.toString(), Log.STD_ERR);

return null;

} catch (UnsupportedEncodingException e) {

//Log.output(e.toString(), Log.STD_ERR);

return null;

} finally {

md5MessageDigest = null;

strBytes = null;

md5Bytes = null;

}

}

當客戶通過接口url付款后,支付寶會自動的去調用前面提供的[notify_url]參數中的url.

(2)支付寶將付款信息返回給系統

當客戶付款后，支付寶就會自動調用上面表單提供的[notify_url]，下面是一個[notifyurl.jsp]的一個例子：

Html代碼

String ret = AlipayMgr.insert(request);

if(ret==null){

out.print("success");//成功接收支付寶發來的付款信息

}else{

out.print("fail");//出錯

}

%>

String ret = AlipayMgr.insert(request);

if(ret==null){

out.print("success");//成功接收支付寶發來的付款信息

}else{

out.print("fail");//出錯

}

%>

如果確認收到支付寶發來的客戶付款信息，則返回"success"，這樣子支付寶就知道系統已經收到信息了；否則返回"fail"，這樣支付寶會過一段時間后再次發來。其實，只有當支付寶收到"success"的返回信息后才會停止發送付款信息，否則會自動的每隔一段時間就調用上面

的[notify_url]通信接口。

(3)系統處理支付寶發來的付款信息

Java代碼

/*

* Created on 2005-6-12

* Author stephen

* Email zhoujianqiang AT gmail DOT com

* CopyRight(C)2005-2008 , All rights reserved.

*/

package com.soft4j;

import java.sql.Connection;

import java.sql.SQLException;

import java.util.Enumeration;

import java.util.Vector;

import javax.servlet.http.HttpServletRequest;

/**

* 支付寶付款通知接口.

*

* @author stephen

* @version 1.0.0

*/

public final class NotifyUrlMgr {

public static String insert(HttpServletRequest httpRequest) {

//定義變量和進行必要的初始化工作

Enumeration parameterNames = null;

String parameterName = null;

String parameterValue = null;

int count = 0;

Vector[] params = null;

Vector vParameterName = new Vector();

Vector vParameterValue = new Vector();

try {

String orderId = httpRequest.getParameter("out_trade_no");//訂單號

if(orderId==null||"".equals(orderId)) orderId="-1";

parameterNames = httpRequest.getParameterNames();

boolean isPrint = false;

while (parameterNames.hasMoreElements()) {//循環收取支付寶發來的所有參數信息

parameterName = (String) parameterNames.nextElement();

parameterValue = httpRequest.getParameter(parameterName);

if(parameterValue==null) parameterValue="";

vParameterName.add(parameterName);

vParameterValue.add(parameterValue);

count++;

}

//這里添加對收到信息的處理:一般是將這些信息存入數據庫,然后對客戶的訂單進行處理.

return null;

} catch (Exception e) {

return e.toString();

} finally {

//

}

}

}

/*

* Created on 2005-6-12

* Author stephen

* Email zhoujianqiang AT gmail DOT com

* CopyRight(C)2005-2008 , All rights reserved.

*/

package com.soft4j;

import java.sql.Connection;

import java.sql.SQLException;

import java.util.Enumeration;

import java.util.Vector;

import javax.servlet.http.HttpServletRequest;

/**

* 支付寶付款通知接口.

*

* @author stephen

* @version 1.0.0

*/

public final class NotifyUrlMgr {

public static String insert(HttpServletRequest httpRequest) {

//定義變量和進行必要的初始化工作

Enumeration parameterNames = null;

String parameterName = null;

String parameterValue = null;

int count = 0;

Vector[] params = null;

Vector vParameterName = new Vector();

Vector vParameterValue = new Vector();

try {

String orderId = httpRequest.getParameter("out_trade_no");//訂單號

if(orderId==null||"".equals(orderId)) orderId="-1";

parameterNames = httpRequest.getParameterNames();

boolean isPrint = false;

while (parameterNames.hasMoreElements()) {//循環收取支付寶發來的所有參數信息

parameterName = (String) parameterNames.nextElement();

parameterValue = httpRequest.getParameter(parameterName);

if(parameterValue==null) parameterValue="";

vParameterName.add(parameterName);

vParameterValue.add(parameterValue);

count++;

}

//這里添加對收到信息的處理:一般是將這些信息存入數據庫,然后對客戶的訂單進行處理.

return null;

} catch (Exception e) {

return e.toString();

} finally {

//

}

}

}

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