支付寶支付前提

需開通支付寶支付服務

官網地址

檔案地址

專案匯入支付寶maven依賴

    <dependency>
        <groupId>com.alipay.sdk</groupId>
        <artifactId>alipay-sdk-java</artifactId>
        <version>4.8.10.ALL</version>
    </dependency>

相關組態檔, 讀取組態檔

// 組態檔，在專案resources目錄下
#ali
alipay.public.key =
alipay.private.key = 
alipay.app.public.key =
alipay.app.pay.notify.url = 
alipay.app.id = 
gateway_url = https://openapi.alipaydev.com/gateway.do

// 讀取組態檔類
@Component
public class SysConfig
{

    public static final String ENCODING = "UTF-8";
    // 組態檔類名稱
    public static final String CONFIG_PATH = "";

    private Properties props = null;

    /**
     * 獲取全域唯一的SysConfig 物件
     *
     * @return
     */
    public static SysConfig getInstance()
    {
        SysConfig config = ConfigHolder.INSTANCE.getConf();
        config.init();
        return config;
    }

    /**
     * 初始化
     */
    private void init()
    {
        props = new Properties();
        loadConfigProps();
    }

    /**
     * 加載組態檔
     */
    public void loadConfigProps()
    {
        InputStream is = null;
        try
        {
            is = getClass().getResourceAsStream(CONFIG_PATH);
            props.load(is);
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        finally
        {
            if (is != null)
            {
                try
                {
                    is.close();
                    is = null;
                }
                catch (Exception e)
                {
                    e.printStackTrace();
                }
            }
        }
    }

    public String getProperty(String key)
    {
        String tmp = props.getProperty(key);
        if (StringUtils.isNotEmpty(tmp))
        {
            return tmp.trim();
        }
        return tmp;
    }

    enum ConfigHolder
    {
        INSTANCE;
        SysConfig conf;

        ConfigHolder()
        {
            conf = new SysConfig();
        }

        public SysConfig getConf()
        {
            return conf;
        }
    }



}

初始化AlipayClient

/**
     * 獲得初始化的AlipayClient
     *
     * @return AlipayClient
     */
    private AlipayClient getAlipayClient() {
        // 獲得初始化的AlipayClient
        return new DefaultAlipayClient(
                //支付寶網關
                SysConfig.getInstance().getProperty(EnumAlipayKey.gateway_url.getKey()),
                //appid
                SysConfig.getInstance().getProperty(EnumAlipayKey.app_id.getKey()),
                //商戶私鑰
                SysConfig.getInstance().getProperty(EnumAlipayKey.alipay_private_key.getKey()),
                AlipayConstants.FORMAT_JSON,
                //字符編碼格式
                AlipayConstants.CHARSET_UTF8,
                //支付寶公鑰
                SysConfig.getInstance().getProperty(EnumAlipayKey.alipay_public_key.getKey()),
                //簽名方式
                AlipayConstants.SIGN_TYPE_RSA2
        );
    }

呼叫支付的request

`		// 獲得初始化的AlipayClient
        AlipayClient alipayClient = getAlipayClient();
        // 設定請求引數
        AlipayTradeAppPayRequest alipayRequest = new AlipayTradeAppPayRequest();
        // 服務器異步通知，支付寶會回呼該路徑，必須外網且不能有請求引數，獲取回呼引數校驗后 處理自己業務邏輯(修改訂單狀態等等)
       	alipayRequest.setNotifyUrl(SysConfig.getInstance().getProperty(EnumAlipayKey.app_pay_notify_url.getKey()));
        // 封裝引數
        AlipayTradeAppPayModel model = new AlipayTradeAppPayModel();
        model.setOutTradeNo(orderSn);
        model.setTotalAmount(orderInfo.getPayPrice());
        model.setSubject(orderInfo.getCourseName());
        model.setBody("");
        model.setProductCode("FAST_INSTANT_TRADE_PAY");
        model.setTimeoutExpress("15m");
        alipayRequest.setBizModel(model);

		//  請求支付寶進行支付，獲取支付結果
		String result = alipayClient.sdkExecute(alipayRequest).getBody();
		log.info("支付結果：{}", result);


            

呼叫查詢訂單request

		// 獲得初始化的AlipayClient
        AlipayClient alipayClient = getAlipayClient();

        AlipayTradeQueryRequest queryRequest = new AlipayTradeQueryRequest();
        AlipayTradeQueryModel queryModel = new AlipayTradeQueryModel();
        queryModel.setOutTradeNo(orderSn);
        queryRequest.setBizModel(queryModel);

        // 呼叫查詢
        AlipayTradeQueryResponse execute = alipayClient.execute(queryRequest);
        log.info("回傳結果：{}", execute.getBody()));

退款，退款查詢等等類似

好啦， 就到這了，如有不足和疑問請留言