技术_支付宝在线支付部分java代码(转载)

/**    
     * 根据订单生成支付宝接口URL.    
     * @param httpRequest    
     * @param order 订单实例    
     * @return    
     * @throws Exception    
     */     
    public static String makeOrderAlipayUrl(HttpServletRequest httpRequest,Order order) throws Exception {      
        HashMap hm = new HashMap();      
        hm.put("_input_charset",httpRequest.getCharacterEncoding());//采用相同的编码方式      
        hm.put("body","您在www.xxx.com上的订单");//填写在跳到支付宝页面上显示的付款内容信息      
        hm.put("discount","-5");//填写折扣信息 -5表示抵扣5元      
        hm.put("logistics_fee","10");//物流费用      
        hm.put("logistics_payment","BUYER_PAY");//物流费用支付人 BUYER_PAY=买家支付物流费用      
        hm.put("logistics_type","EXPRESS");//物流方式      
        hm.put("notify_url","http://www.xxx.com/notifyurl.jsp");//客户付款后,支付宝调用的页面      
        hm.put("out_trade_no",order.getId());//外部交易号,最好具有唯一性,在获取支付宝发来的付款信息时使用.      
        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");//支付类型 1=商品购买,2=服务购买,...      
        hm.put("price","105.30");//订单金额信息      
        hm.put("quantity","1");//订单商品数量,一般都是写1,它是按照整个订单包来计算      
        hm.put("return_url","http://www.xxx.com/ReturnUrl.jsp");//客户付款成功后,显示给客户的页面      
        hm.put("seller_email","alipay@xxx.com");//你的支付宝账户email      
        hm.put("service","create_direct_pay_by_user");//create_direct_pay_by_user=直接付款,trade_create_by_buyer 担保付款       
        hm.put("subject","www.xxx.com的订单");//填写在跳到支付宝页面上显示的付款标题信息      
        String payGateway = "https://www.alipay.com/cooperate/gateway.do?";//跳转到支付宝的url头      
        return makeUrl(hm,securityCode,httpRequest.getCharacterEncoding(),payGateway);//securityCode(安全码)       
    }      
    /**    
     * 根据传入的参数生成alipay的支付URL    
     * @param hm 参数值    
     * @param securityCode 安全码    
     * @param charset 编码    
     * @param payGateway 支付宝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);//支付宝要求参数必须按字母排序      
        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_type=MD5");      
        keys.clear();      
        keys = null;      
        return content.toString();      
    }      
    /**    
     * 生成md5编码字符串.    
     * @param str 源字符串    
     * @param charset 编码方式    
     * @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;      
                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;      
        }      
    }  

/*
*notify页面
*/   
 <%@ page contentType="text/html;charset=UTF-8"%>
<%@ page import="com.soft4j.AlipayMgr"%><%        
        String ret = AlipayMgr.insert(request);        
        if(ret==null){        
            out.print("success");//成功接收支付宝发来的付款信息        
        }else{        
            out.print("fail");//出错        
        }        
    %>  

/*    
 * 系统处理页面订单数据
 * 
 */     
package com.soft4j;      
import java.sql.Connection;      
import java.sql.SQLException;      
import java.util.Enumeration;      
import java.util.Vector;      
import javax.servlet.http.HttpServletRequest;      
/**    
 * 支付宝付款通知接口.    
 *     
 * @author stephen    
 * @version 1.0.0    
 */     
public final class NotifyUrlMgr {      
    public static String insert(HttpServletRequest httpRequest) {      
        //定义变量和进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");//订单号      
            if(orderId==null||"".equals(orderId)) orderId="-1";      
            parameterNames = httpRequest.getParameterNames();      
            boolean isPrint = false;      
            while (parameterNames.hasMoreElements()) {//循环收取支付宝发来的所有参数信息      
                parameterName = (String) parameterNames.nextElement();      
                parameterValue = httpRequest.getParameter(parameterName);      
                if(parameterValue==null) parameterValue="";      
                vParameterName.add(parameterName);      
                vParameterValue.add(parameterValue);      
                count++;      
            }      
            //这里添加对收到信息的处理:一般是将这些信息存入数据库,然后对客户的订单进行处理.      
            return null;      
        } catch (Exception e) {      
            return e.toString();      
        } finally {       
        }      
    }      
}