Java开发微信Navicat支付完整版

2023-08-16 22:09:04 272

一：准备工作

1：先去微信公众平台注册一个公众号，选择服务号

2：去微信商户平台注册一个商户号，用于收款

3：在商户号中配置对应的公众号的APPID

4：支付结果异步通知（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微信Navicat支付官方文档

5：测试的时候一定要使用内网穿透软件，否则回调时会报错

二：开发代码

WeChatPayConfig：

publicclassWeChatPayConfig{
//公众号APPID
privateStringAPPID="";

//商户号KEY
privateStringKEY="";

//商户号ID
privateStringMCHID="";

//支付完成后微信回调地址，需要外网能访问要是域名，不能是127.0.0.1跟localhost
privateStringNOTIFY_URL="";
}

WeChatPayServcie：

publicinterfaceWeChatPayServcie{

//微信支付下单
publicMapgetWxpayUrl(MapsourceMap);

//订单查询
publicStringorderQuery(Stringout_trade_no);
}

@Service
publicclassWeChatPayServiceImplimplementsWeChatPayServcie{

/**
*微信支付请求
*@paramsourceMap
*@return
*/
publicMapgetWxpayUrl(MapsourceMap){
SortedMapsignParams=newTreeMap();
Stringnonce_str=UUID.randomUUID().toString().trim().replaceAll("-","");
signParams.put("appid",PayConfig.APPID);
signParams.put("mch_id",PayConfig.MCHID);
signParams.put("nonce_str",sourceMap.get("nonce_str"));
signParams.put("product_id",sourceMap.get("prod_id"));
signParams.put("body",sourceMap.get("body"));
signParams.put("out_trade_no",sourceMap.get("out_trade_no"));
signParams.put("total_fee",sourceMap.get("total_fee"));
signParams.put("spbill_create_ip",WxUtil.getIp());
signParams.put("notify_url",PayConfig.NOTYFLY_URL);
signParams.put("trade_type","NATIVE");
Stringsign=WxUtil.createSign(signParams,PayConfig.KEY);
signParams.put("sign",sign);
StringxmlPackage=WxUtil.parseMapXML(signParams);
MapresultMap=newHashMap();
try{
Stringresult=HttpUtil.post("https://api.mch.weixin.qq.com/pay/unifiedorder",xmlPackage);
resultMap=WxUtil.parseXmlMap(result);
}catch(Exceptione){
e.printStackTrace();
}
StringreturnCode=(String)resultMap.get("return_code");
StringreturnMsg=(String)resultMap.get("return_msg");
if(returnCode.equalsIgnoreCase("FAIL")){
thrownewRuntimeException(returnMsg);
}
Stringresult_code=(String)resultMap.get("result_code");
if(result_code.equalsIgnoreCase("FAIL")){
thrownewRuntimeException(resultMap.get("err_code_des"));
}
Stringcode_url=(String)resultMap.get("code_url");
Mapmap=newHashMap<>();
map.put("code_url",code_url);
map.put("out_trade_no",sourceMap.get("out_trade_no"));
returnmap;
}


/**
*微信支付订单查询
*@paramout_trade_no
*@return
*/
publicStringorderQuery(Stringout_trade_no){
Stringnonce_str=UUID.randomUUID().toString().trim().replaceAll("-","");
SortedMapsignParams=newTreeMap<>();
signParams.put("appid",payConfig.getWeChatPorpetties().getAppId());
signParams.put("mch_id",payConfig.getWeChatPorpetties().getMchId());
signParams.put("out_trade_no",out_trade_no);
signParams.put("nonce_str",nonce_str);
Stringsign=WxUtil.createSign(signParams,payConfig.getWeChatPorpetties().getApiKey());
signParams.put("sign",sign);
StringxmlPackage=WxUtil.parseMapXML(signParams);
MapresultMap=newHashMap();
try{
Stringresult=HttpUtil.post("https://api.mch.weixin.qq.com/pay/orderquery",xmlPackage);
resultMap=WxUtil.parseXmlMap(result);
}catch(Exceptione){
e.printStackTrace();
thrownewRuntimeException("渠道网络异常");
}
StringreturnCode=(String)resultMap.get("return_code");
StringreturnMsg=(String)resultMap.get("return_msg");
if(returnCode.equalsIgnoreCase(PayContants.FAIL)){
thrownewRuntimeException(returnMsg);
}
Stringresult_code=(String)resultMap.get("result_code");
if(result_code.equalsIgnoreCase(PayContants.FAIL)){
thrownewRuntimeException(resultMap.get("err_code_des"));
}
Stringtrade_state=(String)resultMap.get("trade_state");
returntrade_state;
}
}

WeChatPayController：

/**
*微信支付接口
*/
@Controller
publicclassWxPayController{

@Autowired
WeChatPayServcieweChatPayServcie;

/**
*微信支付下单
*payID可以不用传自己生成32位以内的随机数就好，要保证不重复
*totalFee金额一定要做判断，判断这笔支付金额与数据库是否一致
*/
@RequestMapping("pay")
@ResponseBody
publicMaptoWxpay(HttpServletRequesthttpRequest,StringpayId,StringtotalFee,Stringbody){
System.out.println("开始微信支付...");
Mapmap=newHashMap<>();
Stringnonce_str=UUID.randomUUID().toString().trim().replaceAll("-","");

//生成一笔支付记录


//拼接支付参数
MapparamMap=newHashMap<>();
paramMap.put("nonce_str",nonce_str);
paramMap.put("prod_id",payId);
paramMap.put("body",body);
paramMap.put("total_fee",totalFee);
paramMap.put("out_trade_no",payId);

//发送支付请求并获取返回参数与二维码，用于支付与调用查询接口
MapreturnMap=weChatPayServcie.getWxpayUrl(paramMap);
httpRequest.setAttribute("out_trade_no",payId);
httpRequest.setAttribute("total_fee",totalFee);

//code_url就是二维码URL，可以把这个URL放到草料二维码中生成微信二维码
httpRequest.setAttribute("code_url",returnMap.get("code_url"));

map.put("out_trade_no",payId);
map.put("total_fee",String.valueOf(bigDecimal));
map.put("code_url",returnMap.get("code_url"));
returnmap;
}

/**
*查询微信订单
*ot_trade_no是支付
*/
@RequestMapping("query")
@ResponseBody
publicRootorderQuery(Stringout_trade_no){
returnweixinPayServcie.orderQuery(queryCallbackForm.getOut_trade_no());
}

/**
*微信支付回调，这个地址就是Config中的NOTYFLY_URL
*/
@RequestMapping("callback")
publicvoidnotify_url(HttpServletRequestrequest,HttpServletResponseresponse)throwsDocumentException,ServletException,IOException,Throwable{
System.out.print("微信支付回调获取数据开始...");
StringinputLine;
StringnotityXml="";
try{
while((inputLine=request.getReader().readLine())!=null){
notityXml+=inputLine;
}
request.getReader().close();
}catch(Exceptione){
WxUtil.sendXmlMessage(request,response,PayContants.FAIL);
thrownewRuntimeException("回调数据xml获取失败！");
}
if(StringUtils.isEmpty(notityXml)){
WxUtil.sendXmlMessage(request,response,PayContants.FAIL);
thrownewRuntimeException("回调数据xml为空！");
}
MapresultMap=XMLParse.parseXmlMap(notityXml);
StringreturnCode=(String)resultMap.get("return_code");
StringreturnMsg=(String)resultMap.get("return_msg");
if(returnCode.equalsIgnoreCase(PayContants.FAIL)){
WxUtil.sendXmlMessage(request,response,PayContants.FAIL);
thrownewRuntimeException(returnMsg);
}
StringresultCode=(String)resultMap.get("result_code");
if(resultCode.equalsIgnoreCase(PayContants.FAIL)){
WxUtil.sendXmlMessage(request,response,PayContants.FAIL);
thrownewRuntimeException(resultMap.get("err_code_des"));
}

SortedMapparamMap=newTreeMap<>();
paramMap.put("appid",resultMap.get("appid"));
paramMap.put("mch_id",resultMap.get("mch_id"));
paramMap.put("nonce_str",resultMap.get("nonce_str"));
paramMap.put("body",resultMap.get("body"));
paramMap.put("openid",resultMap.get("openid"));
paramMap.put("is_subscribe",resultMap.get("is_subscribe"));
paramMap.put("trade_type",resultMap.get("trade_type"));
paramMap.put("bank_type",resultMap.get("bank_type"));
paramMap.put("total_fee",resultMap.get("total_fee"));
paramMap.put("fee_type",resultMap.get("fee_type"));
paramMap.put("cash_fee",resultMap.get("cash_fee"));
paramMap.put("transaction_id",resultMap.get("transaction_id"));
paramMap.put("out_trade_no",resultMap.get("out_trade_no"));
paramMap.put("time_end",resultMap.get("time_end"));
paramMap.put("return_code",resultMap.get("return_code"));
paramMap.put("return_msg",resultMap.get("return_msg"));
paramMap.put("result_code",resultMap.get("result_code"));

Stringout_trade_no=(String)resultMap.get("out_trade_no");
Stringsign=SignUtil.createSign(paramMap,WxPayConfig.KEY);
StringmySign=(String)resultMap.get("sign");

//回调一定要验证签名以防数据被篡改
if(sign.equals(mySign)){
System.out.println("回调签名验证成功！");

//修改业务逻辑，将那笔支付状态改为已支付
}
WxUtil.sendXmlMessage(request,response,PayContants.SUCCESS);
}else{
WxUtil.sendXmlMessage(request,response,PayContants.FAIL);
thrownewRuntimeException("签名不一致！");
}
}

}

WxUtil：

packagecom.ys.commons.utils.pay;

importjava.io.BufferedWriter;
importjava.io.IOException;
importjava.io.OutputStream;
importjava.io.OutputStreamWriter;
importjava.net.InetAddress;
importjava.net.UnknownHostException;
importjavax.servlet.http.HttpServletRequest;
importjavax.servlet.http.HttpServletResponse;

//微信工具类
publicclassWxUtil{

//获取当前IP
publicstaticStringgetIp(){
try{
Stringspbill_create_ip=InetAddress.getLocalHost().getHostAddress();
returnspbill_create_ip;
}catch(UnknownHostExceptionvar2){
var2.printStackTrace();
return"获取IP失败...";
}
}

//输出xml格式
publicstaticvoidsendXmlMessage(HttpServletRequestrequest,HttpServletResponseresponse,Stringcontent){
try{
StringcontentXml="";
OutputStreamos=response.getOutputStream();
BufferedWriterresBr=newBufferedWriter(newOutputStreamWriter(os));
resBr.write(contentXml);
resBr.flush();
resBr.close();
}catch(IOExceptionvar6){
var6.printStackTrace();
}

}

//生成sign签名
publicstaticStringcreateSign(SortedMappackageParams,StringKEY){
StringBuffersb=newStringBuffer();
Set>es=packageParams.entrySet();
Iteratorit=es.iterator();

while(it.hasNext()){
Entryentry=(Entry)it.next();
Stringk=(String)entry.getKey();
Stringv=(String)entry.getValue();
if(null!=v&&!"".equals(v)&&!"sign".equals(k)&&!"key".equals(k)){
sb.append(k+"="+v+"&");
}
}

sb.append("key="+KEY);
Stringsign=MD5Util.MD5Encode(sb.toString(),"UTF-8").toUpperCase();
returnsign;
}

//将map转为xml
publicstaticStringparseMapXML(SortedMapmap){
StringxmlResult="";
StringBuffersb=newStringBuffer();
sb.append("");
Iteratorvar3=map.keySet().iterator();

while(var3.hasNext()){
Stringkey=(String)var3.next();
Stringvalue="";
sb.append("<"+key+">"+value+"");
System.out.println();
}

sb.append("");
xmlResult=sb.toString();
returnxmlResult;
}

//将xml转为map
publicstaticMapparseXmlMap(Stringxml)throwsDocumentException{
Documentdocument=DocumentHelper.parseText(xml);
Elementroot=document.getRootElement();
ListelementList=root.elements();
Mapmap=newHashMap();
Iteratorvar5=elementList.iterator();

while(var5.hasNext()){
Elemente=(Element)var5.next();
map.put(e.getName(),e.getText());
}

returnmap;
}
}

发送请求需要推荐一个非常好用的工具，里面各种常用的工具都封装好了hutool，如果想直接复制代码使用也需要引入此工具的maven库

注意：此工具只支持JDK1.7以上至此代码已经完成，有意见建议的都可以留言，后续会更新最完整最新版的PayPal支付，同时有需要的也可以看看博主的支付宝PC支付

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。

Java开发微信Navicat支付完整版

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