本篇内容介绍了“Java怎么实现支付宝PC支付功能”的有关知识,在实际案例的操作过程中,不少人都会遇到这样的困境,接下来就让小编带领大家学习一下如何处理这些情况吧!希望大家仔细阅读,能够学有所成!
一:准备工作
1:如没有账号的请先去 支付宝商户平台 注册商户号
2:开发前需要导入支付宝SDK 支付宝SDK下载链接 Maven依赖也在里面
3:生成支付宝密钥、公钥,需要用到支付宝密钥生成工具 密钥生成工具下载链接 ,密钥用于签名使用
4:电脑网站支付结果异步通知(关于支付结果异步通知后续会专门写一个博客,需要重点注意)
注意:请先详细查看官方文档按步骤开发,一切以官方文档为主 支付宝官方开发文档,如使用老接口请移步 老版即时到账文档
5:测试的时候一定要使用内网穿透软件,否则会报错
二:开发代码
这里使用的是沙箱环境,正式上线时请将环境改为正式环境
AlipayConfig:
public class AlipayConfig { public static String APPID = ""; //用支付宝密钥生成工具生成的私钥 public static String RSA_PRIVATE_KEY = ""; //电脑网站支付结果异步通知,可以参考异步文档,一定要是外网能访问的 public static String notify_url = ""; //电脑网站支付结果同步通知,用于转跳到用户自己的页面,一定要是外网能访问的 public static String return_url = ""; //沙箱接口,正式上线时请改用正式支付接口 public static String URL = "https://openapi.alipaydev.com/gateway.do"; public static String CHARSET = "UTF-8"; public static String FORMAT = "json"; //用支付宝密钥生成工具生成的公钥 public static String ALIPAY_PUBLIC_KEY = ""; public static String log_path = "/log"; public static String SIGNTYPE = "RSA2"; public AlipayConfig() { } }
AlipayService:
public interface AlipayService { public String toAlipay(Map<String, String> sourceMap) throws IOException; }
AlipayServiceImpl:
@Service public class AlipayServiceImpl implements AlipayService { @Override public String toAlipay(Map<String, String> sourceMap) throws IOException { AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.URL,AlipayConfig.APPID,AlipayConfig.RSA_PRIVATE_KEY,AlipayConfig.FORMAT,AlipayConfig.CHARSET,AlipayConfig.ALIPAY_PUBLIC_KEY,AlipayConfig.SIGNTYPE); AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest(); alipayRequest.setReturnUrl(AlipayConfig.return_url); alipayRequest.setNotifyUrl(AlipayConfig.notify_url); AlipayTradeWapPayModel alipayTradeWapPayModel = new AlipayTradeWapPayModel(); alipayTradeWapPayModel.setOutTradeNo(sourceMap.get("out_trade_no")); alipayTradeWapPayModel.setProductCode("FAST_INSTANT_TRADE_PAY"); alipayTradeWapPayModel.setTotalAmount(sourceMap.get("total_amount")); alipayTradeWapPayModel.setSubject("Alipay"); alipayTradeWapPayModel.setBody(sourceMap.get("body")); alipayRequest.setBizModel(alipayTradeWapPayModel); String form=""; try { form = alipayClient.pageExecute(alipayRequest).getBody(); } catch (AlipayApiException e) { e.printStackTrace(); } return form; } }
AlipayController:
@Controller public class AlipayController { @Autowired public AlipayService alipayService; @RequestMapping("pay") public void toAlipay(HttpServletRequest httpRequest , HttpServletResponse httpResponse, String payId, String totalFee, String body) throws IOException { //生成一笔支付记录,支付完成时将支付状态改为成功 Map<String, String> sourceMap = new HashMap<>(); sourceMap.put("out_trade_no",payId); sourceMap.put("total_amount",totalFee); sourceMap.put("body",getUTF8XMLString(body)); String form = alipayService.toAlipay(sourceMap); httpResponse.setContentType("text/html;charset=" + AlipayConfig.CHARSET); httpResponse.getWriter().write(form); httpResponse.getWriter().flush(); httpResponse.getWriter().close(); } //注意异步返回结果通知是以post请求形式返回的 @RequestMapping("notifyUrl") public String notify_url(HttpServletRequest request){ Map<String, String> paramsMap = convertRequestParamsToMap(request); String out_trade_no= paramsMap.get("out_trade_no"); try { boolean signVerified = AlipaySignature.rsaCheckV1(paramsMap, AlipayConfig.ALIPAY_PUBLIC_KEY, AlipayConfig.CHARSET, AlipayConfig.SIGNTYPE); //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 "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"; } } //注意同步返回结果是以get请求形式返回的 @RequestMapping("returnUrl") public String return_url(HttpServletRequest request){ Map<String, String> paramsMap = convertRequestParamsToMap(request); try { boolean signVerified = AlipaySignature.rsaCheckV1(paramsMap, AlipayConfig.ALIPAY_PUBLIC_KEY, AlipayConfig.CHARSET, AlipayConfig.SIGNTYPE); 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"; } //将请求中的参数转换为Map public static Map<String, String> convertRequestParamsToMap(HttpServletRequest request) { Map<String, String> retMap = new HashMap(); Set<Entry<String, String[]>> entrySet = request.getParameterMap().entrySet(); Iterator var3 = entrySet.iterator(); while(true) { while(var3.hasNext()) { Entry<String, String[]> entry = (Entry)var3.next(); String name = (String)entry.getKey(); String[] values = (String[])entry.getValue(); int valLen = values.length; if(valLen == 1) { retMap.put(name, values[0]); } else if(valLen <= 1) { retMap.put(name, ""); } else { StringBuilder sb = new StringBuilder(); String[] var9 = values; int var10 = values.length; for(int var11 = 0; var11 < var10; ++var11) { String val = var9[var11]; sb.append(",").append(val); } retMap.put(name, sb.toString().substring(1)); } } return retMap; } } //将字符串转换为UTF-8编码以防出现乱码错误 public static String getUTF8XMLString(String xml) { StringBuffer sb = new StringBuffer(); sb.append(xml); String xmString = ""; String xmlUTF8=""; try { xmString = new String(sb.toString().getBytes("UTF-8")); xmlUTF8 = URLEncoder.encode(xmString, "UTF-8"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return xmlUTF8; } }
至此代码已经完成!!!
三:演示结果
注意:扫码或者登陆账户时如果用的是沙箱开发环境请使用沙盒支付宝APP扫码,或者使用沙盒账户支付,否则会弹出码已失效错误
支付宝沙箱
支付成功页面是从支付结果同步通知controller中跳转的,后续会更新最详细最完整的微信Navicat支付跟PayPal支付
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