java 实现支付宝退款 javaweb实现支付宝支付

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mob64ca1400bfa8 2023-10-04 08:42:56

文章标签 java 实现支付宝退款支付宝网站支付 java 支付宝 System 文章分类 Java 后端开发

支付宝电脑支付流程,Servlet版

感谢原博主,大佬无视即可,工作一年多第一次写博客,不足之处请谅解

官方参考文档:
https://docs.open.alipay.com/270/105899/ 废话少说直接上代码
首先配置参数

package com.alipay.config;

import java.io.FileWriter;
import java.io.IOException;

/* *
 *类名：AlipayConfig
 *功能：基础配置类
 *详细：设置帐户有关信息及返回路径
 *修改日期：2017-04-05
 *说明：
 *以下代码只是为了方便商户测试而提供的样例代码，商户可以根据自己网站的需要，按照技术文档编写,并非一定要使用该代码。
 *该代码仅供学习和研究支付宝接口使用，只是提供一个参考。
 */

public class AlipayConfig {
	
//↓↓↓↓↓↓↓↓↓↓请在这里配置您的基本信息↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓

	// 应用ID,您的APPID，收款账号既是您的APPID对应支付宝账号
	public static String app_id = "2016081******";
	
	// 商户私钥，您的PKCS8格式RSA2私钥,官方有密钥生产工具,下载地址在下方
    public static String merchant_private_key = "";
	
	// 支付宝公钥,查看地址：https://openhome.alipay.com/platform/keyManage.htm 对应APPID下的支付宝公钥。
    public static String alipay_public_key = "";

	// 服务器异步通知页面路径  需http://格式的完整路径，不能加?id=123这类自定义参数，必须外网可以正常访问
	public static String notify_url = "http://localhost:8080/NotifyServlet";//为防止未知的异常,后台业务逻辑收到异步通知后执行

	// 页面跳转同步通知页面路径 需http://格式的完整路径，不能加?id=123这类自定义参数，必须外网可以正常访问
	public static String return_url = "http://localhost:8080/1.jsp";

	// 签名方式
	public static String sign_type = "RSA2";
	
	// 字符编码格式
	public static String charset = "utf-8";
	
	// 支付宝网关,此处注意下,沙箱测试和正式环境,网关是不同的,详情查看官方文档
	public static String gatewayUrl = "https://openapi.alipaydev.com/gateway.do";
	
	// 支付宝网关
	public static String log_path = "C:\\";

//↑↑↑↑↑↑↑↑↑↑请在这里配置您的基本信息↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑

    /** 
     * 写日志，方便测试（看网站需求，也可以改成把记录存入数据库）
     * @param sWord 要写入日志里的文本内容
     */
    public static void logResult(String sWord) {
        FileWriter writer = null;
        try {
            writer = new FileWriter(log_path + "alipay_log_" + System.currentTimeMillis()+".txt");
            writer.write(sWord);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (writer != null) {
                try {
                    writer.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

package com.alipay.config;

import java.io.FileWriter;
import java.io.IOException;

/* *
 *类名：AlipayConfig
 *功能：基础配置类
 *详细：设置帐户有关信息及返回路径
 *修改日期：2017-04-05
 *说明：
 *以下代码只是为了方便商户测试而提供的样例代码，商户可以根据自己网站的需要，按照技术文档编写,并非一定要使用该代码。
 *该代码仅供学习和研究支付宝接口使用，只是提供一个参考。
 */

public class AlipayConfig {
	
//↓↓↓↓↓↓↓↓↓↓请在这里配置您的基本信息↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓

	// 应用ID,您的APPID，收款账号既是您的APPID对应支付宝账号
	public static String app_id = "2016081******";
	
	// 商户私钥，您的PKCS8格式RSA2私钥,官方有密钥生产工具,下载地址在下方
    public static String merchant_private_key = "";
	
	// 支付宝公钥,查看地址：https://openhome.alipay.com/platform/keyManage.htm 对应APPID下的支付宝公钥。
    public static String alipay_public_key = "";

	// 服务器异步通知页面路径  需http://格式的完整路径，不能加?id=123这类自定义参数，必须外网可以正常访问
	public static String notify_url = "http://localhost:8080/NotifyServlet";//为防止未知的异常,后台业务逻辑收到异步通知后执行

	// 页面跳转同步通知页面路径 需http://格式的完整路径，不能加?id=123这类自定义参数，必须外网可以正常访问
	public static String return_url = "http://localhost:8080/1.jsp";

	// 签名方式
	public static String sign_type = "RSA2";
	
	// 字符编码格式
	public static String charset = "utf-8";
	
	// 支付宝网关,此处注意下,沙箱测试和正式环境,网关是不同的,详情查看官方文档
	public static String gatewayUrl = "https://openapi.alipaydev.com/gateway.do";
	
	// 支付宝网关
	public static String log_path = "C:\\";

//↑↑↑↑↑↑↑↑↑↑请在这里配置您的基本信息↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑

    /** 
     * 写日志，方便测试（看网站需求，也可以改成把记录存入数据库）
     * @param sWord 要写入日志里的文本内容
     */
    public static void logResult(String sWord) {
        FileWriter writer = null;
        try {
            writer = new FileWriter(log_path + "alipay_log_" + System.currentTimeMillis()+".txt");
            writer.write(sWord);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (writer != null) {
                try {
                    writer.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

生产密钥工具:

java 实现支付宝退款 javaweb实现支付宝支付_支付宝网站支付

密钥生产工具地址
https://docs.open.alipay.com/291/105971

java 实现支付宝退款 javaweb实现支付宝支付_System_02

第二步创建完毕订单后发起付款请求

package com.alipay.config;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.alipay.api.response.AlipayTradePagePayResponse;

public class OrderServlet extends HttpServlet{
   
	@Override
	public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        System.out.println("开始处理OrderServlet的服务");
        
        //创建订单,随意写了个类,把属性值写死了,这里就不贴代码了
        Order order = new Order();
        
        //向支付宝发送请求
        //获得初始化的AlipayClient
        AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id,
                AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key,
                AlipayConfig.sign_type);
                
        //设置请求参数
        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
        alipayRequest.setReturnUrl(AlipayConfig.return_url);
        alipayRequest.setNotifyUrl(AlipayConfig.notify_url);
        //商户订单号，商户网站订单系统中唯一订单号，必填
        String out_trade_no = order.getOrderID()+"";
        //付款金额，必填
        String total_amount = order.getOrderPay()+"";
        //订单名称，必填
        String subject = order.getOrderName();
        //商品描述，可空
        String body = order.getMessage();
        alipayRequest.setBizContent("{\"out_trade_no\":\"" + out_trade_no + "\"," + "\"total_amount\":\""
                + total_amount + "\"," + "\"subject\":\"" + subject + "\"," + "\"body\":\"" + body + "\","
                + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
        
        //若想给BizContent增加其他可选请求参数，以增加自定义超时时间参数timeout_express来举例说明
        //alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\"," 
        //        + "\"total_amount\":\""+ total_amount +"\"," 
        //        + "\"subject\":\""+ subject +"\"," 
        //        + "\"body\":\""+ body +"\"," 
        //        + "\"timeout_express\":\"10m\"," 
        //        + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
        //请求参数可查阅【电脑网站支付的API文档-alipay.trade.page.pay-请求参数】章节
        
        AlipayTradePagePayResponse alipayResponse = null;
        try {
            alipayResponse=alipayClient.pageExecute(alipayRequest);
            System.out.println(alipayResponse.getBody());
             System.out.println(alipayResponse.getMsg());
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
        
        response.setContentType("text/html;charset=UTF-8");
        response.getWriter().write(alipayResponse.getBody());
    }
	
}

package com.alipay.config;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.alipay.api.response.AlipayTradePagePayResponse;

public class OrderServlet extends HttpServlet{
   
	@Override
	public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        System.out.println("开始处理OrderServlet的服务");
        
        //创建订单,随意写了个类,把属性值写死了,这里就不贴代码了
        Order order = new Order();
        
        //向支付宝发送请求
        //获得初始化的AlipayClient
        AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id,
                AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key,
                AlipayConfig.sign_type);
                
        //设置请求参数
        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
        alipayRequest.setReturnUrl(AlipayConfig.return_url);
        alipayRequest.setNotifyUrl(AlipayConfig.notify_url);
        //商户订单号，商户网站订单系统中唯一订单号，必填
        String out_trade_no = order.getOrderID()+"";
        //付款金额，必填
        String total_amount = order.getOrderPay()+"";
        //订单名称，必填
        String subject = order.getOrderName();
        //商品描述，可空
        String body = order.getMessage();
        alipayRequest.setBizContent("{\"out_trade_no\":\"" + out_trade_no + "\"," + "\"total_amount\":\""
                + total_amount + "\"," + "\"subject\":\"" + subject + "\"," + "\"body\":\"" + body + "\","
                + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
        
        //若想给BizContent增加其他可选请求参数，以增加自定义超时时间参数timeout_express来举例说明
        //alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\"," 
        //        + "\"total_amount\":\""+ total_amount +"\"," 
        //        + "\"subject\":\""+ subject +"\"," 
        //        + "\"body\":\""+ body +"\"," 
        //        + "\"timeout_express\":\"10m\"," 
        //        + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
        //请求参数可查阅【电脑网站支付的API文档-alipay.trade.page.pay-请求参数】章节
        
        AlipayTradePagePayResponse alipayResponse = null;
        try {
            alipayResponse=alipayClient.pageExecute(alipayRequest);
            System.out.println(alipayResponse.getBody());
             System.out.println(alipayResponse.getMsg());
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
        
        response.setContentType("text/html;charset=UTF-8");
        response.getWriter().write(alipayResponse.getBody());
    }
	
}

最后对支付宝返回的参数进行业务处理

package com.alipay.config;

import java.io.IOException;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class NotifyServlet extends HttpServlet{
   
	private static final long serialVersionUID = 1L;

	@Override
	public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        Map<String,String[]> parameterMap=request.getParameterMap();
       
        //业务处理
        for(String key : parameterMap.keySet()) {
        	System.out.println("KEY:"+key+"--value:"+parameterMap.get(key));
        }
        //成功处理后返回success
        response.getWriter().write("success");
    }
}

package com.alipay.config;

import java.io.IOException;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class NotifyServlet extends HttpServlet{
   
	private static final long serialVersionUID = 1L;

	@Override
	public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        Map<String,String[]> parameterMap=request.getParameterMap();
       
        //业务处理
        for(String key : parameterMap.keySet()) {
        	System.out.println("KEY:"+key+"--value:"+parameterMap.get(key));
        }
        //成功处理后返回success
        response.getWriter().write("success");
    }
}

JAR包

java 实现支付宝退款 javaweb实现支付宝支付_java_03