微信支付的实现
public void report(String domain, long elapsedTimeMillis, Exception ex) {
}
public DomainInfo getDomain(WXPayConfig config) {
}
}
}
添加依赖
org.springframework.boot
spring-boot-starter-web
org.slf4j
slf4j-log4j12
org.springframework.boot
spring-boot-starter-web
ch.qos.logback
logback-classic
org.apache.httpcomponents
httpclient
4.5.3
org.slf4j
slf4j-api
1.7.21
org.slf4j
slf4j-simple
1.7.21
com.google.zxing
core
3.3.3
com.google.zxing
javase
3.3.3
org.springframework.boot
spring-boot-starter-thymeleaf
下单、生成二维码
/**
*/
@Service
public class PayService {
/**
-
下单 @param goodsId 商品id @param price 价格 @return 二维码的URL
*/
public Map<String, String> makeOrder(String goodsId, Long price) throws Exception {
//创建支付对象
MyWXPayConfig config = new MyWXPayConfig();
WXPay wxPay = new WXPay(config);
Map<String,String> map = new HashMap<>();
map.put(“appid”,config.getAppID());
map.put(“mch_id”,config.getMchID());
map.put(“device_info”,“WEB”);
map.put(“nonce_str”, UUID.randomUUID().toString().replace(“-”,“”));
map.put(“body”,“商城购物”);
String tradeNo = UUID.randomUUID().toString().replace(“-”, “”);
map.put(“out_trade_no”, tradeNo);
map.put(“fee_type”,“CNY”);
map.put(“total_fee”,String.valueOf(price));
map.put(“trade_type”,“NATIVE”);
map.put(“product_id”,goodsId);
//执行统一下单
Map<String, String> result = wxPay.unifiedOrder(map);
System.out.println(“result:”+result);
//保存订单号
result.put(“trade_no”,tradeNo);
return result;
}
/**
-
生成二维码 @param url @param response
*/
public void makeQRCode(String url, HttpServletResponse response){
//通过支付链接生成二维码
HashMap<EncodeHintType, Object> hints = new HashMap<>();
hints.put(EncodeHintType.CHARACTER_SET, “UTF-8”);
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
hints.put(EncodeHintType.MARGIN, 2);
try {
MatrixToImageWriter.writeToStream(bitMatrix, “PNG”, response.getOutputStream());
System.out.println(“创建二维码完成”);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
-
检查订单状态 @param tradeNo @return @throws Exception
*/
public String checkOrder(String tradeNo) throws Exception {
MyWXPayConfig config = new MyWXPayConfig();
String str =
“”+
“”+config.getAppID()+“”+
“<mch_id>”+config.getMchID()+“</mch_id>”+
“<nonce_str>”+UUID.randomUUID().toString().replace(“-”,“”)+“</nonce_str>”+
“<out_trade_no>”+tradeNo+“</out_trade_no>”+
“5E00F9F72173C9449F802411E36208734B8138870ED3F66D8E2821D55B317078”+
“”;
WXPay pay = new WXPay(config);
Map<String,String> map = WXPayUtil.xmlToMap(str);
Map<String, String> map2 = pay.orderQuery(map);
String state = map2.get(“trade_state”);
System.out.println(“订单”+tradeNo+“,状态”+state);
return state;
}
}
订单控制器
@RestController
@RequestMapping(“/order”)
public class OrderController {
@Autowired
private PayService payService;
private String tradeNo;
//二维码生成
@GetMapping(“/code”)
public void qrcode(@RequestParam(“goodsId”)String goodsId,
@RequestParam(“price”)Long price,
HttpServletResponse response){
try {
Map<String,String> map = payService.makeOrder(goodsId, price);
payService.makeQRCode(map.get(“code_url”),response);
System.out.println(“生成订单号：” + map.get(“trade_no”));
tradeNo = map.get(“trade_no”);
} catch (Exception e) {
e.printStackTrace();
}
}
//支付后通知
@PostMapping(“/notify”)
public void notify(HttpServletRequest request,HttpServletResponse response) throws Exception {
String str = Streams.asString(request.getInputStream());
//将字符串xml转换为Map
Map<String, String> map = WXPayUtil.xmlToMap(str);
//读取订单号
String no = map.get(“out_trade_no”);
//模拟修改商户后台数据库订单状态
System.out.println(“更新订单状态:”+no);
response.getWriter().println(“ ” +
" <return_code><![CDATA[SUCCESS]]></return_code> " +