微信服务号开发之jssdk-微信充值、支付见解

红太狼 2020-11-28 05:58 667阅读 0赞

关于微信服务号开发的微信支付一般有两种情况。一种为微信充值，然后服务号中余额增加；一种为购买商品，微信支付。在微信支付中（JSSDKUtil.setPayParam(request, notifyUrl, money, orderId, openId);）需要传2个必要参数到方法中，微信支付单号和money  ，关于微信支付单号orderId  ，必须全世界唯一 ，每次和全世界都不一样，可以用（String orderId = UUID.randomUUID().toString().replaceAll("-", "");）UUID工具类生成，以保证每次都在全世界唯一，然后就是在订单表中必须存在一字段保存ordered，因为在支付回调函数成功后的方法里，需要用回调回来的orderid来获取订单对象，从而改变订单状态，进行后续操作。微信充值也是一个道理，需要在会员表中存在一个存放ordered的字段，好利用它进行回调函数成功方法中获取原本会员对象，然后对对象余额加钱。思路就这样，附上重点代码:
````
//充值

@Controller  
@RequestMapping("/chongzhi.do")  
public class ChongzhiAction {  
   
 public static void main(String[] args) {

}

@Autowired  
 private TixianService tixianService;  
 @Autowired  
 private KtdpService  ktdpService;

@Autowired  
 private HttpServletRequest request;  
   
 /**  
  * 支付回调  
  * @param request  
  * @return  
  * @throws IOException  
  */  
 @RequestMapping  
 public String execute(HttpServletRequest request,HttpServletResponse response) throws IOException  
 {  
  //请修改数据库状态  
  InputStream is = request.getInputStream();  
  byte[] b = new byte[1024];  
  int size = is.read(b);  
  String str = new String(b, 0, size);  
  System.out.println(str);  
  // 获取请求数据  
  PayNotify payNotify = XMLConverUtil.convertToObject(PayNotify.class,  
    str);

// 签名判断略...  
  String sign = payNotify.getSign();

boolean f = SignatureUtil.validateAppSignature(payNotify,  
    WeixinConfig.PAY_KEY);  
    
  System.out.println("充值进来了1------"+payNotify.getResult_code());  
  System.out.println("充值进来了2------"+payNotify.getReturn_code());  
   
  // 支付成功  
  if ("SUCCESS".equals(payNotify.getResult_code())  
    && "SUCCESS".equals(payNotify.getReturn_code())) {  
   System.out.println("充值进来了------");  
   String orderid = payNotify.getOut_trade_no();  
   String money= payNotify.getTotal_fee();  
   //String qian = String.format("%.2f", money);  
   String opid = payNotify.getOpenid();  
   System.out.println(opid+"opid");  
            //修改状态  
     
    //支付->余额加钱  
   Member member = ktdpService.findByOrderId(orderid);  
   member.setMenMoney(member.getMenMoney()+Float.parseFloat(money)/100);  
   ktdpService.update(member);  
    //增加一条记录  
   String wpayId=tixianService.getwpayId();  
      tixianService.addwpay(opid, money, wpayId);

response.getOutputStream().write("success".getBytes());

} else {  
   response.getOutputStream().write("error".getBytes());  
  }

return null;  
 }  
   
 @RequestMapping(params="method=chongzhi")  
 public String toPay(HttpServletRequest request)  
 {  
  // 1.得openId  
  String openId = (String) request.getSession().getAttribute("openId");  
    
  String orderId = UUID.randomUUID().toString().replaceAll("-", "");  
  Member member = ktdpService.findByOpenId(openId);  
  member.setOrderId(orderId);  
  ktdpService.update(member);  
    
  //  参数   
  String chongzhimoney=request.getParameter("chongzhimoney");  
  //System.out.println(chongzhimoney);  
  // 2.去支付  
  String notifyUrl = URLManager.getServerURL(request)+"/chongzhi.do";  
  String json = JSSDKUtil.setPayParam(request, notifyUrl, chongzhimoney, orderId,  
    openId);  
        request.setAttribute("json", json);  
  // 4.调用微信支付  
  return "/pay_example.jsp";  
    
 }  
   
}

//订单支付

@Controller  
@RequestMapping("/cardd.do")  
public class CartoorderAction{  
   
 public static void main(String[] args) {  
    
    
 }  
   
    @Autowired  
 private KtdpService  ktdpService;  
 @Autowired  
 private TixianService tixianService;  
 @Autowired  
 private DingDanService dingDanService;
 @Autowired  
 private HttpServletRequest request;  
   
 /**  
  * 支付回调  
  * @param request  
  * @return  
  * @throws IOException  
  * 
 @RequestMapping  
 public String execute(HttpServletRequest request,HttpServletResponse response) throws IOException  
 {  
  //请修改数据库状态  
  InputStream is = request.getInputStream();  
  byte[] b = new byte[1024];  
  int size = is.read(b);  
  String str = new String(b, 0, size);  
  System.out.println(str);  
  // 获取请求数据  
  PayNotify payNotify = XMLConverUtil.convertToObject(PayNotify.class,  
    str);

// 签名判断略...  
  String sign = payNotify.getSign();

boolean f = SignatureUtil.validateAppSignature(payNotify,  
    WeixinConfig.PAY_KEY);  
    
   
  // 支付成功  
  if ("SUCCESS".equals(payNotify.getResult_code())  
    && "SUCCESS".equals(payNotify.getReturn_code())) {  
   String wpayid = payNotify.getOut_trade_no();  
   String money = payNotify.getTotal_fee();  
   String opid = payNotify.getOpenid();  
             
   Member member = ktdpService.findByOrderId(wpayid);  
   ktdpService.update(member);  
   tixianService.addwpay(opid, money, wpayid);  
   //修改状态  
   dingDanService.changemember(member,Float.parseFloat(money));  
   dingDanService.gethavepuboid(wpayid);  
   response.getOutputStream().write("success".getBytes());
  } else {  
   response.getOutputStream().write("error".getBytes());  
  }

return null;  
 }  
   
 @RequestMapping(params="method=tijiaodd")  
 public String toPay(HttpServletRequest request) throws UnsupportedEncodingException  
 {  
  // 1.得openId  
  String openId = (String) request.getSession().getAttribute("openId");  
    
  String orderId = UUID.randomUUID().toString().replaceAll("-", "");  
  Member member = ktdpService.findByOpenId(openId);  
    
    
   //  参数   
  String dizhi = request.getParameter("dizhi");  
     dizhi = new String(dizhi.getBytes("ISO-8859-1"), "UTF-8");  
     String ids = request.getParameter("ids");  
     //System.out.println(ids);  
     String money=request.getParameter("money");  
    
      // 写订单  
     String wpayId=tixianService.getwpayId();  
     member.setOrderId(wpayId);  
  ktdpService.update(member);  
  String[] cid = ids.split("x");  
       
     tixianService.addDindan(member, cid, dizhi,wpayId);  
         
       
  // 2.去支付  
  String notifyUrl = URLManager.getServerURL(request)+"/cardd.do";  
  String json=JSSDKUtil.setPayParam(request, notifyUrl, money, wpayId, openId);  
        request.setAttribute("json", json);  
  // 4.调用微信支付  
  return "/pay_example.jsp";  
    
 }  
   
}
````
  
//pay.jsp
````
<%@ page language="java" contentType="text/html; charset=UTF-8"  pageEncoding="UTF-8"%>  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
<html>  
<head>  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
<title>微信支付</title>  
<script type="text/javascript">  
//json 数据  
var x_json = ${json};

//调用微信JS api 支付  
        function jsApiCall()  
        {  
            WeixinJSBridge.invoke(  
                'getBrandWCPayRequest',  
                 x_json,  
                function(res){  
                    //alert(res.err_code+res.err_desc+res.err_msg);  
                    if (res.err_msg=="get_brand_wcpay_request:ok") //支付成功  
                    {  
                     
                    }  
                    else if (res.err_msg=="get_brand_wcpay_request:cancel") //支付过程中用户取消  
                    {  
                        
                    }  
                    else if (res.err_msg=="get_brand_wcpay_request:fail") //支付失败  
                    {  
                       
                    }  
                     
                     
                }  
            );  
        }