Java spring boot 实现支付宝支付

一、准备工作:

1、登陆支付宝开发者中心,申请一个开发者账号。

地址:https://openhome.alipay.com/

2、进入研发服务:

Java spring boot 实现支付宝支付_第1张图片

3、点击链接进入工具下载页面:

Java spring boot 实现支付宝支付_第2张图片

4、点击下载对应版本的RSA公钥生成器:

Java spring boot 实现支付宝支付_第3张图片

5、生成公钥密钥(记录你的应用私钥):

Java spring boot 实现支付宝支付_第4张图片

6、在支付宝配置公钥(点击保存):

Java spring boot 实现支付宝支付_第5张图片

二、搭建demo

1、引入jia包:
        <dependency>
            <groupId>com.alipay.sdkgroupId>
            <artifactId>alipay-sdk-javaartifactId>
            <version>4.9.9version>
        dependency>
2、搭建工程,目录结构如下:

Java spring boot 实现支付宝支付_第6张图片

3、编写alipay.properties配置文件
# 您的APPID
appId = 2016102200738709
# 商户私钥
privateKey = 您的商户私钥
# 支付宝公钥
publicKey = 您的支付宝公钥
# 服务器异步通知页面路径 ,需要公网能访问到。
notifyUrl = http://公网能访问的路径
# 页面跳转同步通知页面路径 需要公网能访问到。
returnUrl = http://公网能访问的路径
# 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:\\"
4、编写AlipayBean:
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";
	
    /**
     * 省略get set 方法
     */
}
5、编写Alipay:

/**
 * 支付宝支付接口
 */
@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;
    }
}

6、编写AlipayProperties:
/**
 * 应用启动加载文件
 */
@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:你的alipay.properties文件路径");
            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);
    }

}

7、编写PropertiesListener:
/**
 * 配置文件监听器,用来加载自定义配置文件
 */
@Component
public class PropertiesListener implements ApplicationListener<ApplicationStartedEvent> {

    @Override
    public void onApplicationEvent(ApplicationStartedEvent event) {
        AlipayProperties.loadProperties();
    }
}
8、编写PayService:
/**
 * 支付服务
 */
public interface PayService {

    /**
     * 支付宝支付接口
     * @param alipayBean
     * @return
     * @throws AlipayApiException
     */
    String aliPay(AlipayBean alipayBean) throws AlipayApiException;

}
9、编写PayServiceImpl:
@Service
public class PayServiceImpl implements PayService {

    @Autowired
    private Alipay alipay;

    @Override
    public String aliPay(AlipayBean alipayBean) throws AlipayApiException {
        return alipay.pay(alipayBean);
    }

}


10、编写OrderController:
/**
 * 订单接口
 *
 * @author Louis
 * @date Dec 12, 2018
 */
@RestController()
@RequestMapping("order")
public class OrderController {

    @Autowired
    private PayService payService;

    @RequestMapping(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);
    }

	//支付成功支付宝调用方法:
    @RequestMapping(value = "ok")
    public void ok(){
        System.out.println("付款成功!");
    }
}

11、访问页面,输入信息进入支付页面:

Java spring boot 实现支付宝支付_第7张图片

12、点击支付宝支付,页面跳转,成功!

Java spring boot 实现支付宝支付_第8张图片

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