Java对接支付宝支付功能

Love The Way You Lie 2023-07-19 08:12 42阅读 0赞

## 1、 登录支付宝开通沙箱模式的支付权限。 ##

什么是 沙箱模式？

> 蚂蚁沙箱环境 (Beta)  
> 是协助开发者进行接口功能开发及主要功能联调的辅助环境。沙箱环境模拟了开放平台部分产品的主要功能和主要逻辑（当前沙箱支持产品请参考“沙箱支持产品列表”）。

我的理解：即为测试模式，基本和线上流程一直，测试通过后可替换为 真实的应用账号与私钥。

## 登录支付宝开发平台官网： ##

[https://open.alipay.com/platform/manageHome.htm][https_open.alipay.com_platform_manageHome.htm]

### 点击：开发者中心 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70]

### 点击 ：开发服务-研发服务-沙箱/验收/数据库实验室 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70 1]

### 点击：沙箱应用 ###

可获得：APPID、支付宝网关、  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70 2]

### 下载支付宝密钥生成器： ###

可获得，应用私钥、应用公钥、支付宝公钥  
下载地址：[https://opendocs.alipay.com/open/291/105971][https_opendocs.alipay.com_open_291_105971]

选择win版本：  
![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70 3][]  
利用刚下载好的 \*\*“支付宝开发平台助手”\*\*生成密钥：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70 4]  
回到沙箱应用，点击 **“RSA2(SHA256)密钥(推荐)”** 然后把刚刚生成的公钥复制进去来获得支付宝公钥。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70 5]  
通过以上操作，我们已经获得了支付宝沙箱模式的支持。

## 2、JAVA部分 ##

**支付配置信息：AlipayConfig.java**  
修改成上面你的相关配置信息

package com.jack.apply.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 = "2016101800714145";
    
        // 商户私钥，您的PKCS8格式RSA2私钥
        public static String APP_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/alipay.trade.page.pay-JAVA-UTF-8/notify_url.jsp";
    
        // 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 = "http://localhost:8080/success";
    
        // 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
        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();
                    }
                }
            }
        }
    }

**pom.xml :**

<dependency>
                <groupId>com.alipay.sdk</groupId>
                <artifactId>alipay-sdk-java</artifactId>
                <version>3.0.0</version>
            </dependency>
    
            
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>javax.servlet-api</artifactId>
            </dependency>
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>jstl</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.apache.tomcat.embed</groupId>
                <artifactId>tomcat-embed-jasper</artifactId>
                
            </dependency>

**后台支付控制类：PayController :**

package com.jack.apply.controller;
    
    import com.alipay.api.AlipayApiException;
    import com.alipay.api.AlipayClient;
    import com.alipay.api.DefaultAlipayClient;
    import com.alipay.api.request.AlipayTradePagePayRequest;
    import com.jack.apply.config.AlipayConfig;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    import org.springframework.web.servlet.ModelAndView;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import java.io.IOException;
    
    @RestController
    public class PayController { 
    
        @RequestMapping("/")
        public ModelAndView index(){ 
            ModelAndView mv = new ModelAndView();
            mv.setViewName("index");
            return mv;
        }
    
        @RequestMapping("/success")
        public ModelAndView success(){ 
            ModelAndView mv = new ModelAndView();
            mv.setViewName("success");
            return mv;
        }
    
        @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();
        }
    }

**页面设计 ：**

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70 6]  
**index.jsp :**

<%--
      Created by IntelliJ IDEA.
      User: Administrator
      Date: 2020/3/20 0020
      Time: 上午 11:24
      To change this template use File | Settings | File Templates.
    --%>
    <%@ 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>

**success.jsp :**

## 3、开始测试 ##

### 启动工程 ###

进入到首页 index.jsp，然后填写订单提交。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70 7]  
然后跳转到了支付页面：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70 8]  
登录沙箱买家支付宝  
买家支付宝在哪？  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70 9]  
登入后付款：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70 10]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70 11]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70 12]

测试支付成功，已成功回调到我们 **success.jsp** 页面。

而且买家卖家 支付宝余额也发生了相应的变化：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70 13]

# 对接支付宝成功。 #

[https_open.alipay.com_platform_manageHome.htm]: https://open.alipay.com/platform/manageHome.htm
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhbmdjaGFvMjAxMQ_size_16_color_FFFFFF_t_70]: /images/20230528/61d917d01c2b4a4fb6bcd44fd223af41.png
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[https_opendocs.alipay.com_open_291_105971]: https://opendocs.alipay.com/open/291/105971
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