一、准备支付平台对接材料:

1.首先进入支付宝开放平台的官网:https://open.alipay.com/
2.支付宝扫码登录注册成为开发者。
3.进入控制台→开发工具推荐→沙箱,创建网页&移动应用。
4.应用信息里面有APPID,接口加签方式启用公钥模式点击查看即可看到应用公钥和私钥(这一步如果没有需要自己下载密钥生成工具,具体参考官方文档:https://opendocs.alipay.com/open/291/105971)。
5.应用网关地址需要对应你项目的访问地址,在测试环境下一般是:http://127.0.0.1:8080

二、进入开发过程:

(1)新建一个SpringBoot工程,我用的版本是2.5.10。
(2)后端相关类和配置:

1、引入pom.xml配置:

Maven依赖

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.2</version>
        </dependency>
        <!-- lombok  -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.20</version>
            <scope>provided</scope>
        </dependency>
        <!--支付宝sdk-->
        <!-- alipay -->
        <dependency>
            <groupId>com.alipay.sdk</groupId>
            <artifactId>alipay-sdk-java</artifactId>
            <version>3.1.0</version>
        </dependency>
        <!-- fastjson -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.58</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

2、实体类:

Ali实体类

package com.alipay.entity;

import lombok.Data;

/**
 * @Author zf
 * @ClassName AliBean.java
 * @ProjectName alipay
 */
@Data
public class AliBean {
    /**
     * 商户订单号,必填
     */
    private String out_trade_no;
    /**
     * 订单名称,必填
     */
    private String subject;
    /**
     * 付款金额,必填
     * 根据支付宝接口协议,必须使用下划线
     */
    private String total_amount;
    /**
     * 商品描述,可空
     */
    private String body;
    /**
     * 超时时间参数
     */
    private String timeout_express = "1h";
    /**
     * 产品编号
     */
    private String product_code = "FAST_INSTANT_TRADE_PAY";
}

3、PayService:

PayService

package com.alipay.service;

import com.alipay.api.AlipayApiException;
import com.alipay.entity.AliBean;

/**
 * @Author zf
 * @ClassName PayService.java
 * @ProjectName alipay
 */
public interface PayService {

    String aliPay(AliBean alipayBean) throws AlipayApiException;

}

4、PayServiceImpl:

PayServiceImpl

package com.alipay.service.impl;

import com.alipay.api.AlipayApiException;
import com.alipay.entity.AliBean;
import com.alipay.pay.AliPay;
import com.alipay.service.PayService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * @Author zf
 * @ClassName PayServiceImpl.java
 * @ProjectName alipay
 */
@Service
public class PayServiceImpl implements PayService {

    @Autowired
    private AliPay aliPay;

    @Override
    public String aliPay(AliBean alipayBean) throws AlipayApiException {
        System.out.println(alipayBean.toString());
        return aliPay.pay(alipayBean);
    }
}

5、AliPay.yml:

AliPay.yml

# 应用ID
appId: 您的APPID,收款账号既是您的APPID对应支付宝账号。
# 商户私钥
privateKey: 您的PKCS8格式RSA2私钥。
# 支付宝公钥
publicKey: 查看地址:https://openhome.com/platform/keyManage.htm 对应APPID下的支付宝公钥。
# 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。
notifyUrl: http://localhost:9090/error.html
# 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。
returnUrl: http://127.0.0.1:8080/success.html
# 签名方式
signType: RSA2
# 字符编码格式
charset: utf-8
# 支付宝网关
gatewayUrl: https://openapi.alipaydev.com/gateway.do
# 支付宝日志
logPath: "D:\\log"

6、PropertiesListener:

PropertiesListener

package com.alipay.config;

import com.alipay.pay.AliPayProperties;
import org.springframework.boot.context.event.ApplicationStartedEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.stereotype.Component;

/**
 * @Author zf
 * @ClassName PropertiesListener.java
 * @ProjectName alipay
 */
@Component
public class PropertiesListener implements ApplicationListener<ApplicationStartedEvent> {

    @Override
    public void onApplicationEvent(ApplicationStartedEvent event) {
        AliPayProperties.loadProperties();
    }
}

7、AliPay:

AliPay

package com.alipay.pay;

import com.alibaba.fastjson.JSON;
import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.alipay.entity.AliBean;
import org.springframework.stereotype.Component;

/**
 * @Author zf
 * @ClassName AliPay.java
 * @ProjectName alipay
 */
@Component
public class AliPay {
    /**
     * 支付接口
     * @param alipayBean
     * @return
     * @throws AlipayApiException
     */
    public String pay(AliBean alipayBean) throws AlipayApiException {
        // 1、获得初始化的AlipayClient
        String serverUrl = AliPayProperties.getGatewayUrl();
        String appId = AliPayProperties.getAppId();
        String privateKey = AliPayProperties.getPrivateKey();
        String format = "json";
        String charset = AliPayProperties.getCharset();
        String alipayPublicKey = AliPayProperties.getPublicKey();
        String signType = AliPayProperties.getSignType();
        String returnUrl = AliPayProperties.getReturnUrl();
        String notifyUrl = AliPayProperties.getNotifyUrl();
        AlipayClient alipayClient = new DefaultAlipayClient(serverUrl, appId, privateKey, format, charset, alipayPublicKey, signType);
        // 2、设置请求参数
        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
        // 页面跳转同步通知页面路径
        alipayRequest.setReturnUrl(returnUrl);
        // 服务器异步通知页面路径
        alipayRequest.setNotifyUrl(notifyUrl);
        // 封装参数
        alipayRequest.setBizContent(JSON.toJSONString(alipayBean));
        // 3、请求支付宝进行付款,并获取支付结果
        String result = alipayClient.pageExecute(alipayRequest).getBody();
        System.out.println(result);
        // 返回付款信息
        return result;
    }
}

8、AliPayProperties:

AliPayProperties

package com.alipay.pay;

import org.springframework.beans.factory.config.PropertiesFactoryBean;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.stereotype.Component;

import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

/**
 * @Author zf
 * @ClassName AliPayProperties.java
 * @ProjectName alipay
 */
@Component
public class AliPayProperties {
    public static final String APP_ID = "appId";
    public static final String PRIVARY_KEY = "privateKey";
    public static final String PUBLIC_KEY = "publicKey";
    public static final String NOTIFY_URL = "notifyUrl";
    public static final String RETURN_URL = "returnUrl";
    public static final String SIGN_TYPE = "signType";
    public static final String CHARSET = "charset";
    public static final String GATEWAY_URL = "gatewayUrl";
    public static final String LOG_PATH = "logPath";

    /**
     * 保存加载配置参数
     */
    private static Map<String, String> propertiesMap = new HashMap<String, String>();

    /**
     * 加载属性
     */
    public static void loadProperties() {
        // 获得PathMatchingResourcePatternResolver对象
        PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        try {
            // 加载resource文件(也可以加载resources)
            Resource resources = resolver.getResource("classpath:AliPay.yml");
            PropertiesFactoryBean config = new PropertiesFactoryBean();
            config.setLocation(resources);
            config.afterPropertiesSet();
            Properties prop = config.getObject();
            // 循环遍历所有得键值对并且存入集合
            for (String key : prop.stringPropertyNames()) {
                propertiesMap.put(key, (String) prop.get(key));
            }
        } catch (Exception e) {
            new Exception("配置文件加载失败");
        }
    }

    /**
     * 获取配置参数值
     * @param key
     * @return
     */
    public static String getKey(String key) {
        return propertiesMap.get(key);
    }

    public static String getAppId() {
        return propertiesMap.get(APP_ID);
    }

    public static String getPrivateKey() {
        return propertiesMap.get(PRIVARY_KEY);
    }

    public static String getPublicKey() {
        return propertiesMap.get(PUBLIC_KEY);
    }

    public static String getNotifyUrl() {
        return propertiesMap.get(NOTIFY_URL);
    }

    public static String getReturnUrl() {
        return propertiesMap.get(RETURN_URL);
    }

    public static String getSignType() {
        return propertiesMap.get(SIGN_TYPE);
    }

    public static String getCharset() {
        return propertiesMap.get(CHARSET);
    }

    public static String getGatewayUrl() {
        return propertiesMap.get(GATEWAY_URL);
    }

    public static String getLogPath() {
        return propertiesMap.get(LOG_PATH);
    }
}

9、OrderController:

OrderController

package com.alipay.controller;

import com.alipay.api.AlipayApiException;
import com.alipay.entity.AliBean;
import com.alipay.service.PayService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @Author zf
 * @ClassName OrderController.java
 * @ProjectName alipay
 */
@RestController
@RequestMapping("order")
public class OrderController {

    @Autowired
    private PayService payService;

    @PostMapping(value = "alipay")
    public String alipay(String outTradeNo, String subject, String totalAmount, String body) throws AlipayApiException {
        AliBean alipayBean = new AliBean();
        alipayBean.setOut_trade_no(outTradeNo);
        alipayBean.setSubject(subject);
        alipayBean.setTotal_amount(totalAmount);
        alipayBean.setBody(body);
        return payService.aliPay(alipayBean);
    }
}


(3)前端相关页面:

1、首页:

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>下单页面</title>
</head>
<body>
<form id="form" action="order/alipay" method="post">
  商户订单:
  <input type="text" name="outTradeNo" value="zfb10001"></br>
  订单名称:
  <input type="text" name="subject" value="小米13"></br>
  付款金额:
  <input type="text" name="totalAmount" value="1999"></br>
  商品描述:
  <input type="text" name="body" value="为发烧而生!"></br>
  <input type="submit" value="提交订单">
</form>
<!-- 页面可以自定义,但是要注意的是,里面的name值需要和controller接口里面的所需参数一一对应。 -->
</body>
</html>

2、支付成功后要跳转的页面:

success.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>success</title>
</head>
<body>
<h1>
    恭喜你,支付成功了。
</h1>
</body>
</html>

三、开始测试环节:

1.进入控制台→开发工具推荐→沙箱,沙箱工具下载支付宝客户端沙箱版。
2.安装好以后选择邮箱方式登录,账号密码对应沙箱账号里面的买家信息。
3.然后提交订单用沙箱工具扫码支付就可以了。
配置文件里面的回调地址需要将项目部署在公网方能生效,因为支付宝平台无法请求到你本地的localhost。

如果运行测试项目报错需要在启动类加@SpringBootApplication(exclude= {DataSourceAutoConfiguration.class})注解,原因是:DataSourceAutoConfiguration.class 会自动查找 application.yml 或者 properties 文件里的 spring.datasource.* 相关属性并自动配置单数据源。如果你没有配置数据库连接信息那肯定报错!上面的注解的用途是禁止SpringBoot自动注入数据源配置。

最后修改:2022 年 03 月 25 日
给我一点小钱钱也很高兴啦!o(* ̄▽ ̄*)ブ