(一)、前提工作:
1、进入支付宝开发平台—沙箱环境
1.1、进入个人沙箱环境
点击进入沙箱环境并用支付宝登陆
沙箱管理界面如图所示
appid，支付宝网关，自定义密钥等
这里是沙箱支付宝（虚拟）的账号和密码，可以用来支付
1.2、接下来进行几个密钥的生成 (私钥)⭐⭐
点击进入密钥工具
点击生成
这里是代码中的私钥 ⭐⭐
这时我们拿到两个密钥，将它们保存，这两个密钥很重要
应用私钥
应用公钥
1.3、拿到两个密钥后，进行自定义密钥配置(公钥) ⭐⭐
进入最开始的沙箱管理界面，点击自定义密钥，点击设置（查看），我们选择的是RSA2密钥
选择“公钥”这一选项
将上一步骤生成的应用公钥填进来，会得到支付宝公钥这另一个密钥，记住并保存这个 支付宝公钥
1.4、至此，我们沙箱环境的配置和基本参数都已经获取到。
(二)、Java代码-thymeleaf
1.导入两个包
导入一个包
我用的开发语言是JAVA，工具为IDEA，一个简单的springboot工程
1.构建一个普通的springboot工程，引入支付宝SDK的maven依赖：
<!--支付宝支付接口--> <dependency> <groupId>com.alipay.sdk</groupId> <artifactId>alipay-sdk-java</artifactId> <version>3.0.0</version> </dependency> <!-- thymeleaf --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> <version>2.7.7</version> </dependency>
2.编写两个代码
新建一个AlipayConfig类，用于配置支付的相关配置：
里面的配置信息，标记是你的就写你的。没标记就照搬
package com.jsxs.config; import java.io.FileWriter; import java.io.IOException; public class AlipayConfig { // 应用ID,您的APPID，收款账号既是您的APPID对应支付宝账号,开发时使用沙箱提供的APPID，生产环境改成自己的APPID public static String APP_ID = "122620920"; // 商户私钥，您的PKCS8格式RSA2私钥 public static String APP_PRIVATE_KEY = "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\n"; // 支付宝公钥,您的 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 = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx0R/5SJaYXD9uBTfzbQJvYIh07GHVoeppfndAaoy/HNJrlotxAclJPwLEudVWF3hSXqf1kafXTGfKBCRYTYCoGywm0fQNXH7fZuqYpOu7duKkQJDB+RNxOMWRmU4cemdwIDAQAB\n"; // 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 = "https://www.baidu.com"; // 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(其实就是支付成功后返回的页面) public static String return_url = "https://www.baidu.com"; // 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，这是沙箱的网关(你自己的) public static String gatewayUrl = "https://openapi.alipaydev.cay.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(); } } } } }
新建一个controller包，用于存放Action，新建一个PayController类,编写一个用于支付的接口/pay
package com.jsxs.controller; import com.alipay.api.AlipayApiException; import com.alipay.api.AlipayClient; import com.alipay.api.DefaultAlipayClient; import com.alipay.api.request.AlipayTradePagePayRequest; import com.jsxs.config.AlipayConfig; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; @Controller public class PayController { @RequestMapping("/pay") public void payController(HttpServletRequest request, HttpServletResponse response) throws IOException { //获得初始化的AlipayClient AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.APP_ID, AlipayConfig.APP_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 = new String(request.getParameter("WIDout_trade_no").getBytes("ISO-8859-1"), "UTF-8"); //付款金额，必填 String total_amount = new String(request.getParameter("WIDtotal_amount").getBytes("ISO-8859-1"), "UTF-8"); //订单名称，必填 String subject = new String(request.getParameter("WIDsubject").getBytes("ISO-8859-1"), "UTF-8"); //商品描述，可空 String body = new String(request.getParameter("WIDbody").getBytes("ISO-8859-1"), "UTF-8"); 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 //请求 String form = ""; try { form = alipayClient.pageExecute(alipayRequest).getBody(); //调用SDK生成表单 } catch (AlipayApiException e) { e.printStackTrace(); } response.setContentType("text/html;charset=" + AlipayConfig.CHARSET); response.getWriter().write(form);//直接将完整的表单html输出到页面 response.getWriter().flush(); response.getWriter().close(); } @RequestMapping("/") public String toTest(){ return "index"; } }
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <form action="/pay" method="post"> 订单号：<input type="text" name="WIDout_trade_no" required><br/> 订单名称：<input type="text" name="WIDsubject" required><br/> 付款金额：<input type="text" name="WIDtotal_amount" required><br/> WIDbody：<input type="text" name="WIDbody"><br/> <input type="submit" value="下单"> <input type="reset" value="重置"> </form>
required保证提交的时候这两项内容非空
5. controller类添加跳转html页面的映射：
@RequestMapping("/") public String toTest(){ return "index"; }
6.测试运行，启动项目，在浏览器输入：http://localhost:8080/
3.控制层代码优化
package com.jsxs.controller; import com.alipay.api.AlipayApiException; import com.alipay.api.AlipayClient; import com.alipay.api.DefaultAlipayClient; import com.alipay.api.request.AlipayTradePagePayRequest; import com.jsxs.config.AlipayConfig; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.UUID; @Controller public class PayController { @RequestMapping("/pay") public void payController(HttpServletRequest request, HttpServletResponse response) throws IOException { //获得初始化的AlipayClient AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.APP_ID, AlipayConfig.APP_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 // 订单号 order String order = UUID.randomUUID().toString().replaceAll("-", ""); // 付款金额 money String payMoney="100"; //订单名称 String orderName="江道远火锅店"; String format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.S").format(new Date()); //商品描述 String orderDescription=format+" "+"消费了蔬菜类"; // String out_trade_no = new String(order.getBytes("ISO-8859-1"), "UTF-8"); //付款金额，必填 String total_amount = new String(payMoney.getBytes("ISO-8859-1"), "UTF-8"); //订单名称，必填 String subject = new String(orderName.getBytes("ISO-8859-1"), "gbk"); //商品描述，可空 String body = new String(orderDescription.getBytes("ISO-8859-1"), "gbk"); 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 //请求 String form = ""; try { form = alipayClient.pageExecute(alipayRequest).getBody(); //调用SDK生成表单 } catch (AlipayApiException e) { e.printStackTrace(); } response.setContentType("text/html;charset=" + AlipayConfig.CHARSET); response.getWriter().write(form);//直接将完整的表单html输出到页面 response.getWriter().flush(); response.getWriter().close(); } @RequestMapping("/") public String toTest(){ return "index"; } }
前端优化
<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head> <meta charset="UTF-8"> <title>阿里云支付操作</title> </head> <body> <form th:action="@{/pay}" method="post"> <input type="submit" value="下单"> <input type="reset" value="重置"> </form> </body> </html>
