Java第三方支付接入案例（支付宝）

素颜马尾好姑娘i 2022-04-04 04:11 766阅读 0赞

## 开源项目链接 ##

Kitty 开源权限管理系统

项目地址：[https://gitee.com/liuge1988/kitty][https_gitee.com_liuge1988_kitty]

演示地址：[http://139.196.87.48:9002/kitty][http_139.196.87.48_9002_kitty]

用户名：admin 密码：admin

## 注册沙箱账号 ##

到蚂蚁金服注册开发者账号，注册地址：[https://open.alipay.com][https_open.alipay.com]，用你的 [支付宝][https_open.alipay.com] 账号扫码登录，完善个人信息，选择服务类型。

![616891-20181212110951125-1498851131.png][]

根据情况选择接入方式，我们这里选择自研开发者，如果已经注册过的省略。

![616891-20181212111414051-2024583742.png][]

选择 开发者中心 --> 研发服务 --> 沙箱，进入沙箱管理界面。

![616891-20181212112431868-1689799383.png][]

进入沙箱，第一次需要填写信息，记下appId，公钥设置处需要把下面步骤生成的公钥设置到这里。

![616891-20181212115802921-1127636251.png][]

## 生成公私秘钥 ##

登录官方地址: [https://docs.open.alipay.com/291/105971][https_docs.open.alipay.com_291_105971]，进入秘钥生成页面。

![616891-20181212120244940-1960032466.png][]

打开下载的工具，运行程序，选择 JAVA 2048 方式，点击生成秘钥。

![616891-20181212120443382-395855683.png][]

把此处生成的公钥复制设置到沙箱环境，就是上面的设置公钥配置，然后把公私秘钥保存起来，以备后用。

## 创建项目 ##

![616891-20181213101701842-803463490.png][]

使用开发工具导入项目，我们这里使用的是 Eclipse ，导入和清理后项目结构如下图。

![616891-20181213101851530-1979660772.png][]

## 添加依赖 ##

添加项目依赖，主要是引入 alipay-sdk-java，提供支付宝支付支持。

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.1.1.RELEASE</version>
            <relativePath/> 
        </parent>
        <groupId>com.louis</groupId>
        <artifactId>epay-service</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <packaging>jar</packaging>
        <name>epay-service</name>
        <description>Demo project for Spring Boot</description>
    
        <properties>
            <java.version>1.8</java.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
            
            <dependency>    
                <groupId>com.alipay.sdk</groupId>
                <artifactId>alipay-sdk-java</artifactId>
                <version>3.1.0</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>1.2.48</version>
            </dependency>
            
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    
    </project>

## 配置文件 ##

在 resources 目录下添加一个 alipay.properties 文件，用于写入支付宝配置信息。

alipay.properties

# 应用ID,您的APPID，收款账号既是您的APPID对应支付宝账号
    appId: 2016092300579321
    # 商户私钥，您的PKCS8格式RSA2私钥
    privateKey: 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
    # 支付宝公钥,查看地址：https://openhome.com/platform/keyManage.htm 对应APPID下的支付宝公钥。
    publicKey: MIIBIjANBnbqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApEW1RBR8T5Je+eIcM+MPYq2gOth9/xo2ekcB2vvCwctpjToPPSGqHQFHffaI2BA4J1cYPFPUYVxeAjrJukPgD8u2KQqbuRib+l/RyWC14n8sXOYH6+PAnUeiUA8dkef2qjK6NA3evUdxzrmY+a3LaVR7O4CL7Ep+T1edzgjoCxFs27XGNwyi5Acnr5qF1XZwQx0WSqr9R+jfIvN2MzUVcen69yB2RoiMVW7hB1J+Yk9RQQK0Fbhy5IuSWjOp8FkCAtmtE9mKJKdZI6oRaDadPLIA2Z5RLUD/Uo6HkDK1jtJhSOyW96KDC6icDbHc8tAcKJ4dM365bT8M2HLNnfb07QIDAQAB
    # 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://外网ip:端口/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://外网ip:端口/sccess.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
    # 支付宝网关
    logPath: "C:\\"

增加一个 PropertiesListener 监听器用于在应用启动时加载配置文件属性。

PropertiesListener.java

package com.louis.epay.config;
    
    import org.springframework.boot.context.event.ApplicationStartedEvent;
    import org.springframework.context.ApplicationListener;
    import org.springframework.stereotype.Component;
    
    import com.louis.epay.alipay.AlipayProperties;
    
    /**
     * 配置文件监听器，用来加载自定义配置文件
     * @author Louis
     * @date Dec 12, 2018
     */
    @Component
    public class PropertiesListener implements ApplicationListener<ApplicationStartedEvent> {
    
        @Override
        public void onApplicationEvent(ApplicationStartedEvent event) {
            AlipayProperties.loadProperties();
        }
    }

上面的监听器加载属性，是通过具体的属性加载器加载的，比如支付宝支付属性加载类如下。

AlipayProperties.java

package com.louis.epay.alipay;
    
    import java.util.HashMap;
    import java.util.Map;
    import java.util.Properties;
    
    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;
    
    /**
     * 应用启动加载文件
     * @author Louis
     * @date Dec 12, 2018
     */
    @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.properties");
                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);
        }
        
    }

## 支付宝支付接口封装 ##

Alipay 是对支付宝支付功能的封装，它接收一个 AlipayBean 为参数，最终通过调用 AlipayClient 的 pageExecute 方法返回支付页面。

Alipay.java

package com.louis.epay.alipay;
    
    import org.springframework.stereotype.Component;
    
    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;
    
    /**
     * 支付宝支付接口
     * @author Louis
     * @date Dec 12, 2018
     */
    @Component
    public class Alipay {
        
        /**
         * 支付接口
         * @param alipayBean
         * @return
         * @throws AlipayApiException
         */
        public String pay(AlipayBean 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();
            // 返回付款信息
            return result;
        }
    }

接口调用参数封装对象如下。

AlipayBean.java

package com.louis.epay.alipay;
    
    /**
     * 支付实体对象
     * 根据支付宝接口协议，其中的属性名，必须使用下划线，不能修改
     * @author Louis
     * @date Dec 12, 2018
     */
    public class AlipayBean {
        
        /**
         * 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= "10m";
        /**
         * 产品编号
         */
        private String product_code= "FAST_INSTANT_TRADE_PAY";
    
        public String getOut_trade_no() {
            return out_trade_no;
        }
        public void setOut_trade_no(String out_trade_no) {
            this.out_trade_no = out_trade_no;
        }
        public String getSubject() {
            return subject;
        }
        public void setSubject(String subject) {
            this.subject = subject;
        }
        public String getTotal_amount() {
            return total_amount;
        }
        public void setTotal_amount(String total_amount) {
            this.total_amount = total_amount;
        }
        public String getBody() {
            return body;
        }
        public void setBody(String body) {
            this.body = body;
        }
        public String getTimeout_express() {
            return timeout_express;
        }
        public void setTimeout_express(String timeout_express) {
            this.timeout_express = timeout_express;
        }
        public String getProduct_code() {
            return product_code;
        }
        public void setProduct_code(String product_code) {
            this.product_code = product_code;
        }
    
    }

## 订单业务封装 ##

订单业务提供支付宝支付接口 alipay，内部通过调用 PayService 完成订单支付。

OrderController.java

package com.louis.epay.controller;
    
    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;
    
    import com.alipay.api.AlipayApiException;
    import com.louis.epay.alipay.AlipayBean;
    import com.louis.epay.service.PayService;
    
    /**
     * 订单接口
     * 
     * @author Louis
     * @date Dec 12, 2018
     */
    @RestController()
    @RequestMapping("order")
    public class OrderController {
    
        @Autowired
        private PayService payService;
    
        /**
         * 阿里支付
         * @param tradeNo
         * @param subject
         * @param amount
         * @param body
         * @return
         * @throws AlipayApiException
         */
        @PostMapping(value = "alipay")
        public String alipay(String outTradeNo, String subject, String totalAmount, String body) throws AlipayApiException {
            AlipayBean alipayBean = new AlipayBean();
            alipayBean.setOut_trade_no(outTradeNo);
            alipayBean.setSubject(subject);
            alipayBean.setTotal_amount(totalAmount);
            alipayBean.setBody(body);
            return payService.aliPay(alipayBean);
        }
    }

PayService 封装了 Alipay, 统一对外提供的支付服务接口。

PayService.java

package com.louis.epay.service;
    
    import com.alipay.api.AlipayApiException;
    import com.louis.epay.alipay.AlipayBean;
    
    /**
     * 支付服务
     * @author Louis
     * @date Dec 12, 2018
     */
    public interface PayService {
    
        /**
         * 支付宝支付接口
         * @param alipayBean
         * @return
         * @throws AlipayApiException
         */
        String aliPay(AlipayBean alipayBean) throws AlipayApiException;
    
    }

支付服务的实现类，通过对各种支付代码的调用，统一对外提供支付服务。

PayServiceImpl.java

package com.louis.epay.service.impl;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    import com.alipay.api.AlipayApiException;
    import com.louis.epay.alipay.Alipay;
    import com.louis.epay.alipay.AlipayBean;
    import com.louis.epay.service.PayService;
    
    @Service
    public class PayServiceImpl implements PayService {
    
        @Autowired
        private Alipay alipay;
        
        @Override
        public String aliPay(AlipayBean alipayBean) throws AlipayApiException {
            return alipay.pay(alipayBean);
        }
    
    }

启动类没什么，有启动器注解就可以了。

EpayApplication.java

package com.louis.epay;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    @SpringBootApplication
    public class EpayApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(EpayApplication.class, args);
        }
    }

## 测试页面 ##

在 static 目录下创建一个 index.html 页面，用于输入订单信息，并进行支付。

index.html

<!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
    <H1>支付测试</H1>
    <hr>
    <div class="form-container">
        <form id="form" action="order/alipay" method="post">
            *商户订单 :
            <input type="text" name="outTradeNo" value="dzcp100010001"><br>
            *订单名称 :
            <input type="text" name="subject" value="红魔手机"><br>
            *付款金额 :
            <input type="text" name="totalAmount" value="0.1" ><br>
            *商品描述 :
            <input type="text" name="body" value="红魔手机 努比亚出品游戏手机"><br>
            <input type="button" value="支付宝支付" onclick="submitForm('order/alipay')"> 
            <input type="button" value=" 微信支付  " onclick="submitForm('order/wexpay')"> 
        </form>
    </div>
    </body>
    
    <script language="javascript">
    function submitForm(action) {
        document.getElementById("form").action = action
        document.getElementById("form").submit()
    }
    </script>
    
    <style>
    .form-container {
        padding-top:10px;
    }
    input {
        margin:10px;
        
    }
    </style>
    </html>

## 测试效果 ##

根据需要修改启动端口，我这里调整为 9000。

application.yml

server:
      port: 9000

访问地址： http://localhost:9000/，显示订单支付页面。

![616891-20181213112717749-1023335388.png][]

点击支付宝支付，调用 order/alipay 接口，如果调用成功，则返回支付宝支付页面。

![616891-20181213113110672-94517142.png][]

到此，支付宝支付的实现案例就完成了。

## 源码下载 ##

码云：[https://gitee.com/liuge1988/epay.git][https_gitee.com_liuge1988_epay.git]

[https_gitee.com_liuge1988_kitty]: https://gitee.com/liuge1988/kitty
[http_139.196.87.48_9002_kitty]: http://139.196.87.48:9002/kitty
[https_open.alipay.com]: https://open.alipay.com/
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