Java Alipay payment function PC Web site development (detailed tutorial)

I. Introduction

This case is the use of Java. Examples of using the sandbox environment Alipay. Posted need to replace the formal environment. Here it is not explained in detail

This code is suitable for a reference, not a direct copy to use.

No account of the need to register a platform:

Log Alipay Development Platform -> Open Access Link: https://open.alipay.com/platform/home.htm  shown below

Development services found in the sandbox Click sandbox development process into the sandbox environment to configure the appropriate information

https://openhome.alipay.com/platform/appDaily.htm

 

 

 Then enter  https://docs.open.alipay.com/291/105971  download Alipay official signing of signature verification tool

 

 

 Click on the left of the key generation, key length selection RSA2 key format choice PKCS8 because we are using a Java development

Then click on to generate the key 

 

 

 

 Then copy the public key to upload the application sandbox environment to    apply the private key needs to keep down the back to a useful Oh;

 

 

 

Alipay things ready and now we start writing code

Two, Java code implementation

In this case using Maven project

First, we import Alipay alipay-sdk-java

<dependency>
    <groupId>com.alipay.sdk</groupId>
    <artifactId>alipay-sdk-java</artifactId>
    <version>3.0.0</version>
</dependency>

 

 

（1）编写支付宝配置文件

package cn.xtyos.project.system.czzx.config;
/**
 * TODO 支付宝配置文件
 *
 * @author James
 * @date 2020/2/9 20:15
 */
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
    public static String APP_ID="2018121562XXXXX";
    //商户私钥，您的PKCS8格式RSA2私钥
    public static String MERCHANT_PRIVATE_KEY="MIIEvQIBADANxxxxxxxxxxxxx";
    //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="MIIBIjANBgkqhkiGxxxxxxxxxxxxxxxxx";
    //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://127.0.0.1:8089/alipay/notify";
    //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://127.0.0.1:8089/alipay/return";
    //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(沙盒环境)
    public static String GATEWAY_URL="https://openapi.alipaydev.com/gateway.do";
}

 

 

 

 

（2）HTML页面代码

<div class="panel-body">
                <form id="dgabksghbrdx" class="form-horizontal" action="/chbManager/chb/pay" method="post" target="_blank">
                    <div class="form-group">
                        <label class="col-sm-3 control-label">彩虹币：</label>
                        <div class="col-sm-8">
                            <input type="text" id="chb" name="chb" placeholder="彩虹币" class="form-control">
                            <label>彩虹币汇率: 1 元 = 10 彩虹币</label>
                        </div>
                    </div>
                    <div class="form-group">
                        <label class="col-sm-3 control-label">合计金额：</label>
                        <div class="col-sm-8">
                            <input id="heji" name="heji" type="text" placeholder="合计金额" class="form-control" readonly="readonly">
                        </div>
                    </div>
                    <div class="form-group">
                        <label class="col-sm-3 control-label">支付方式：</label>
                        <div class="col-sm-8">
                            <label>
                                <input type="radio" checked="" value="alipay" id="optionsRadios1" name="payMethod">支付宝</label>
                        </div>
                    </div>
                    <div class="form-group">
                        <div class="col-sm-offset-3 col-sm-8">
                            <button id="submit" class="btn btn-sm btn-white btn-success" type="submit">支 付</button>
                        </div>
                    </div>
                </form>
            </div>

 

（3）发起支付请求

public static String pay(Map<String,Object> hap) throws Exception {
        //获取要向支付宝支付的参数,由页面传过来
        //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 = StringUtil.getStr(hap.get("WIDout_trade_no"));
        //付款金额，必填
        String total_amount = StringUtil.getStr(hap.get("WIDtotal_amount"));
        //订单名称，必填
        String subject = StringUtil.getStr(hap.get("WIDsubject"));
        //商品描述，可空
        String body = StringUtil.getStr(hap.get("WIDbody"));
        //获得初始化的AlipayClient
        AlipayClient alipayClient = new DefaultAlipayClient(AliPayConfig.GATEWAY_URL,
                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);  //设置同步回调通知
        alipayRequest.setNotifyUrl(AliPayConfig.NOTIFY_URL);  //设置异步回调通知
        //设置支付参数
        alipayRequest.setBizContent("{\"out_trade_no\":\"" + out_trade_no + "\","
                + "\"total_amount\":\"" + total_amount + "\","
                + "\"subject\":\"" + subject + "\","
                + "\"body\":\"" + body + "\","
                + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
        //请求
        String result = null;
        try {
            result = alipayClient.pageExecute(alipayRequest).getBody();
        } catch (AlipayApiException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return result;
    }

 

（4）支付后的同步通知和异步通知

@RequestMapping("/notify")
    public String pay_notify(HttpServletRequest request) {
        System.out.println("支付完成进入异步通知");
        String out_trade_no= paramsMap.get("out_trade_no");
        String trade_status= paramsMap.get("trade_status");
        try {
            boolean signVerified = AlipaySignature.rsaCheckV1(paramsMap, AliPayConfig.ALIPAY_PUBLIC_KEY, AliPayConfig.CHARSET, AliPayConfig.SIGN_TYPE);
            //无论同步异步都要验证签名
            if(signVerified){
                if(trade_status.equals("TRADE_FINISHED") || trade_status.equals("TRADE_SUCCESS")){
                    //处理自己系统的业务逻辑，如：将支付记录状态改为成功，需要返回一个字符串success告知支付宝服务器

                    return "异步 success";
                } else {
                    //支付失败不处理业务逻辑
                    return "failure";
                }
            }else {
                //签名验证失败不处理业务逻辑
                return "failure";
            }
        } catch (AlipayApiException e) {
            e.printStackTrace();
            return "failure";
        }
    }

    @RequestMapping("/return")
    @ResponseBody
    public String pay_return(HttpServletRequest request) {
        Map<String, String> paramsMap = convertRequestParamsToMap(request);
        try {
            boolean signVerified = AlipaySignature.rsaCheckV1(paramsMap, AliPayConfig.ALIPAY_PUBLIC_KEY, AliPayConfig.CHARSET, AliPayConfig.SIGN_TYPE);
            if(signVerified){
                //跳转支付成功界面
                return "支付成功页面";

            }else {
                //跳转支付失败界面
                return "failure";
            }
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
        return "success 同步";
    }

 

 

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完成日期 ©2020-02-10 无人岛
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