java实现H5请求支付宝支付（spring boot）

支付宝支付（spring boot）"/>

java实现H5请求支付宝支付（spring boot）

这次给的任务是看一下支付宝的app支付这块。于是通过网上进行查找相关的资料，进行相关的开发，并记录下来。通过支付宝的官网进行查看：
1.引入支付宝的SDK的依赖；

  <dependency><groupId>com.alipay.sdk</groupId><artifactId>alipay-sdk-java</artifactId><version>3.7.89.ALL</version></dependency>

2.H5(app)请求支付宝支付的必要参数：
1）appid:

2)支付网关
a.沙箱测试的话，支付宝网关为：

.do

b.上线正式环境的话，支付宝的网关为：

.do

3）商户私钥
3.1)windows环境下载秘钥的生成工具的地址：/
3.2)用如下图选择方式生成秘钥：

3.3)通过工具生成密钥后，这里的秘钥即是商户私钥；

3.4)将应用私钥复制到代码中：

3.5)将里面的公钥复制到网页中，.htm?tab=info
如下图所示：

3.6)接着查看支付宝公钥并复制，这里就是支付宝的公钥。

3.7)复制到代码中，如图所示：

4.代码模块，首先是配置参数的模块：

public class AliPayConfig {//支付宝移动端appidpublic static final String ALIPAY_APP_APPID = "";//支付宝商户私钥public static final String ALIPAY_PRIVATE_KEY = "";//支付宝公钥public static final String ALIPAY_PUBLIC_KEY = "";//支付宝网关public static final String ALIPAY_GATEWAY_URL = ".do";// 验证方式public static final String SIGN_TYPE = "RSA2";// 返回路径public static final String ALIPAY_NOTIFYURL = "";// 传输方式public static final String FORMAT = "json";// 字符串格式public static final String CHARSET = "UTF-8";private static AlipayClient alipayClient = null;public static AlipayClient getAlipayClient() throws AlipayApiException {//实例化客户端if (alipayClient == null) {synchronized (AliPayUtil.class) {if (null == alipayClient) {alipayClient = new DefaultAlipayClient(ALIPAY_GATEWAY_URL, ALIPAY_APP_APPID, ALIPAY_PRIVATE_KEY,FORMAT, CHARSET, ALIPAY_PUBLIC_KEY, SIGN_TYPE);}}}return alipayClient;}
}

5.工具类，里面两个方法，一个支付，一个回掉方法。

public class H5PayUtil {@Value("${callback.url}")private String callbackUrl;private static ObjectMapper mapper = new ObjectMapper();/*** H5请求支付宝支付* @param h5PayDto* @return*/public AlipayTradeWapPayResponse aliPayH5(H5PayDto h5PayDto) {try {AlipayClient alipayClient = AliPayConfig.getAlipayClient();AlipayTradeWapPayRequest request = new AlipayTradeWapPayRequest();request.setNotifyUrl("");request.setBizContent(getAliPayRequest(h5PayDto).toString());request.setReturnUrl(h5PayDto.getReturnUrl());AlipayTradeWapPayResponse responseStr = alipayClient.pageExecute(request);log.info(responseStr.getBody());return responseStr;} catch (Exception e) {e.printStackTrace();}return  null;}private  ObjectNode getAliPayRequest(H5PayDto  h5PayDto) throws UnsupportedEncodingException {ObjectNode obj = mapper.createObjectNode();//obj.put("subject", URLEncoder.encode(payRequest.getBody(), "GBK"));obj.put("subject", h5PayDto.getSubject());obj.put("out_trade_no", h5PayDto.getOutTradeNo());obj.put("timeout_express", 30d);//obj.put("time_expire", DateTimeUtils.getYmdhmFormatDate(System.currentTimeMillis() + DateUtils.DAY_IN_MILLS));obj.put("total_amount", h5PayDto.getTotalAmount());obj.put("quit_url", h5PayDto.getReturnUrl());obj.put("product_code", "QUICK_WAP_PAY");return obj;}/*** 功能描述 支付回调** @param request* @return java.lang.String*/public String aliPayNotify(HttpServletRequest request) {Map<String, String> params = Maps.newHashMap();try {//获取支付宝POST过来反馈信息Map requestParams = request.getParameterMap();for (Iterator iter = requestParams.keySet().iterator(); iter.hasNext(); ) {String name = (String) iter.next();String[] values = (String[]) requestParams.get(name);String valueStr = "";for (int i = 0; i < values.length; i++) {valueStr = (i == values.length - 1) ? valueStr + values[i]: valueStr + values[i] + ",";}//乱码解决，这段代码在出现乱码时使用。valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");params.put(name, valueStr);}//调用SDK验证签名boolean flag = AlipaySignature.rsaCheckV1(params, AliPayConfig.ALIPAY_PUBLIC_KEY, AliPayConfig.CHARSET,AliPayConfig.SIGN_TYPE);if (flag) { // 验证成功return "success";}} catch (Exception e) {log.info("aliPayNotify exception={}", e);return "fail";}return "fail";}}

6.需要的参数实体

   @ApiModelProperty(value = "商品的标题", required = true)@NotNull(message = "缺少请求参数")private String subject;@ApiModelProperty(value = "订单号", required = true)@NotNull(message = "缺少请求参数")private String outTradeNo;@ApiModelProperty(value = "金额", required = true)@NotNull(message = "缺少请求参数")private String totalAmount;@ApiModelProperty(value = "支付成功后回跳地址")private String  returnUrl;

7.通过接口H5请求支付宝接口

    @PostMapping("/H5Pay")@ApiOperation(value = "根据订单号进行支付", notes = "H5调用支付宝支付接口")@SneakyThrowspublic ResponseClass<String> pay(@RequestBody H5PayDto h5PayDto) {String result = h5PayUtil.aliPayH5(h5PayDto).getBody();log.info("支付宝返回的信息是:" + result);return ResponseClass.ok(result);}

8.支付回掉的controller

   @Autowiredprivate H5PayUtil h5PayUtil;@RequestMapping("/H5PayNotice")public String orderNotify(HttpServletRequest request) {String alipayNotice = h5PayUtil.aliPayNotify(request);return alipayNotice;}

9.进行接口的请求。如图，返回了一个from表单，即可表示H5请求支付宝已成功。接下来可以和前端进行联调

支付的代码上传至GitHub上：