springboot中怎么对接微信支付,针对这个问题,这篇文章详细介绍了相对应的分析和解答,希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
对接的完整流程如下
首先是配置
gzh.appid=公众号appidwxPay.mchId=商户号wxPay.key=支付密钥wxPay.notifyUrl=域名回调地址
常量:
public static final String unifiedOrderUrl = "https://api.mch.weixin.qq.com/pay/unifiedorder"; public static String SUCCESSxml = "<xml> \r\n" + "\r\n" + " <return_code><![CDATA[SUCCESS]]></return_code>\r\n" + " <return_msg><![CDATA[OK]]></return_msg>\r\n" + " </xml> \r\n" + ""; public static String ERRORxml = "<xml> \r\n" + "\r\n" + " <return_code><![CDATA[FAIL]]></return_code>\r\n" + " <return_msg><![CDATA[invalid sign]]></return_msg>\r\n" + " </xml> \r\n" + "";
工具类准备:
package com.jc.utils.util; import org.apache.commons.codec.digest.DigestUtils;import org.apache.commons.lang.StringUtils;import org.apache.http.HttpEntity;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.methods.CloseableHttpResponse;import org.apache.http.client.methods.HttpPost;import org.apache.http.conn.ssl.SSLConnectionSocketFactory;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClients;import org.apache.http.ssl.SSLContexts;import org.apache.http.util.EntityUtils;import org.jdom2.Document;import org.jdom2.Element;import org.jdom2.input.SAXBuilder;import org.slf4j.Logger;import org.slf4j.LoggerFactory; import javax.net.ssl.SSLContext;import javax.servlet.http.HttpServletRequest;import java.io.*;import java.net.HttpURLConnection;import java.net.URL;import java.security.KeyStore;import java.security.KeyStoreException;import java.text.SimpleDateFormat;import java.util.*; public class CommUtils { private static Logger logger = LoggerFactory.getLogger(CommUtils.class); // 连接超时时间,默认10秒 private static int socketTimeout = 60000; // 传输超时时间,默认30秒 private static int connectTimeout= 60000; public static String getRandomStringByLength(int length) { String base = "abcdefghijklmnopqrstuvwxyz0123456789"; Random random = new Random(); StringBuffer sb = new StringBuffer(); for (int i = 0; i < length; i++) { int number = random.nextInt(base.length()); sb.append(base.charAt(number)); } return sb.toString(); } public static String getOrderNo(){ SimpleDateFormat ft = new SimpleDateFormat("yyyyMMddHHmmss"); String time = ft.format(new Date()); int mathCode = (int) ((Math.random() * 9 + 1) * 10000);// 5位随机数 String resultCode = time+mathCode; return resultCode; } public static String getIpAddr(HttpServletRequest request) { String ip = request.getHeader("X-Forwarded-For"); if (StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)) { //多次反向代理后会有多个ip值, int index = ip.indexOf(","); if (index != -1) { return ip.substring(0, index); } else { return ip; } } ip = request.getHeader("X-Real-IP"); if (StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)) { return ip; } return request.getRemoteAddr(); } public static String sign(String text, String key, String input_charset) { text = text + "&key=" + key; System.out.println(text); return DigestUtils.md5Hex(getContentBytes(text, input_charset)); } public static boolean verify(String text, String sign, String key, String input_charset) { text = text + key; String mysign = DigestUtils.md5Hex(getContentBytes(text, input_charset)); if (mysign.equals(sign)) { return true; } else { return false; } } public static byte[] getContentBytes(String content, String charset) { if (charset == null || "".equals(charset)) { return content.getBytes(); } try { return content.getBytes(charset); } catch (UnsupportedEncodingException e) { throw new RuntimeException("MD5签名过程中出现错误,指定的编码集不对,您目前指定的编码集是:" + charset); } } public static String createCode(int codeLength) { String code = ""; for (int i = 0; i < codeLength; i++) { code += (int) (Math.random() * 9); } return code; } @SuppressWarnings("unused") private static boolean isValidChar(char ch) { if ((ch >= '0' && ch <= '9') || (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z')) return true; if ((ch >= 0x4e00 && ch <= 0x7fff) || (ch >= 0x8000 && ch <= 0x952f)) return true;// 简体中文汉字编码 return false; } public static Map<String, String> paraFilter(Map<String, String> sArray) { Map<String, String> result = new HashMap<>(); if (sArray == null || sArray.size() <= 0) { return result; } for (String key : sArray.keySet()) { String value = sArray.get(key); if (value == null || value.equals("") || key.equalsIgnoreCase("sign") || key.equalsIgnoreCase("sign_type")) { continue; } result.put(key, value); } return result; } public static String createLinkString(Map<String, String> params) { List<String> keys = new ArrayList<>(params.keySet()); Collections.sort(keys); String prestr = ""; for (int i = 0; i < keys.size(); i++) { String key = keys.get(i); String value = params.get(key); if (i == keys.size() - 1) {// 拼接时,不包括最后一个&字符 prestr = prestr + key + "=" + value; } else { prestr = prestr + key + "=" + value + "&"; } } return prestr; } public static String httpRequest(String requestUrl,String requestMethod,String outputStr){ logger.warn("请求报文:"+outputStr); StringBuffer buffer = null; try{ URL url = new URL(requestUrl); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod(requestMethod); conn.setDoOutput(true); conn.setDoInput(true); conn.connect(); //往服务器端写内容 if(null !=outputStr){ OutputStream os=conn.getOutputStream(); os.write(outputStr.getBytes("utf-8")); os.close(); } // 读取服务器端返回的内容 InputStream is = conn.getInputStream(); InputStreamReader isr = new InputStreamReader(is, "utf-8"); BufferedReader br = new BufferedReader(isr); buffer = new StringBuffer(); String line = null; while ((line = br.readLine()) != null) { buffer.append(line); } br.close(); }catch(Exception e){ e.printStackTrace(); } logger.warn("返回报文:"+buffer.toString()); return buffer.toString(); } public static String post(String url, String xmlParam,String apiclient,String mch_id) throws Exception { logger.warn("请求报文:"+xmlParam); StringBuilder sb = new StringBuilder(); try { KeyStore keyStore = KeyStore.getInstance("PKCS12"); FileInputStream instream = new FileInputStream(new File(apiclient)); try { keyStore.load(instream, mch_id.toCharArray()); } finally { instream.close(); } // 证书 SSLContext sslcontext = SSLContexts.custom() .loadKeyMaterial(keyStore, mch_id.toCharArray()).build(); // 只允许TLSv1协议 SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory( sslcontext, new String[]{"TLSv1"}, null, SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER); //创建基于证书的httpClient,后面要用到 CloseableHttpClient client = HttpClients.custom().setSSLSocketFactory(sslsf).build(); HttpPost httpPost = new HttpPost(url);//退款接口 StringEntity reqEntity = new StringEntity(xmlParam,"UTF-8"); // 设置类型 reqEntity.setContentType("application/x-www-form-urlencoded"); httpPost.setEntity(reqEntity); CloseableHttpResponse response = client.execute(httpPost); try { HttpEntity entity = response.getEntity(); System.out.println(response.getStatusLine()); if (entity != null) { BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(entity.getContent(), "UTF-8")); String text = ""; while ((text = bufferedReader.readLine()) != null) { sb.append(text); } } EntityUtils.consume(entity); } catch (Exception e) { e.printStackTrace(); } finally { try { response.close(); } catch (IOException e) { e.printStackTrace(); } } } catch (KeyStoreException e) { e.printStackTrace(); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } logger.warn("返回报文:"+sb.toString()); return sb.toString(); } public static String urlEncodeUTF8(String source){ String result=source; try { result=java.net.URLEncoder.encode(source, "UTF-8"); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } return result; } public static Map doXMLParse(String strxml) throws Exception { if(null == strxml || "".equals(strxml)) { return null; } Map m = new HashMap(); InputStream in = String2Inputstream(strxml); SAXBuilder builder = new SAXBuilder(); Document doc = builder.build(in); Element root = doc.getRootElement(); List list = root.getChildren(); Iterator it = list.iterator(); while(it.hasNext()) { Element e = (Element) it.next(); String k = e.getName(); String v = ""; List children = e.getChildren(); if(children.isEmpty()) { v = e.getTextNormalize(); } else { v = getChildrenText(children); } m.put(k, v); } in.close(); return m; } public static String getChildrenText(List children) { StringBuffer sb = new StringBuffer(); if(!children.isEmpty()) { Iterator it = children.iterator(); while(it.hasNext()) { Element e = (Element) it.next(); String name = e.getName(); String value = e.getTextNormalize(); List list = e.getChildren(); sb.append("<" + name + ">"); if(!list.isEmpty()) { sb.append(getChildrenText(list)); } sb.append(value); sb.append("</" + name + ">"); } } return sb.toString(); } public static InputStream String2Inputstream(String str) { return new ByteArrayInputStream(str.getBytes()); } }
controller:
package com.jch.mng.controller; import com.jch.boot.component.CommonInfo;import com.jch.boot.component.Result;import com.jch.boot.component.ServiceCommonInfo;import com.jch.mng.dto.input.gzh.WxPayDto;import com.jch.mng.service.WxPayService;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Value;import org.springframework.web.bind.annotation.PostMapping;import org.springframework.web.bind.annotation.RequestBody;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController; import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse; @RestController@RequestMapping("/wxPay")public class WxPayController { @Autowired private WxPayService payService; @PostMapping("/pay") public Result<String> pay(@RequestBody WxPayDto dto, HttpServletRequest request) throws Exception { ServiceCommonInfo<Object> result = payService.pay(dto,request); return CommonInfo.controllerBack(result); } @PostMapping("/notify") public void notify(HttpServletRequest request, HttpServletResponse response) throws Exception { payService.notify(request,response); } }
service接口:
package com.jch.mng.service; import com.jch.boot.component.ServiceCommonInfo;import com.jch.mng.dto.input.gzh.WxPayDto; import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse; public interface WxPayService { ServiceCommonInfo<Object> pay(WxPayDto dto, HttpServletRequest request) throws Exception; void notify(HttpServletRequest request, HttpServletResponse response) throws Exception;}
接口实现:
package com.jch.mng.service.impl; import com.alibaba.fastjson.JSON;import com.jc.utils.util.CommUtils;import com.jch.boot.component.ServiceCommonInfo;import com.jch.mng.constant.WeChatConstants;import com.jch.mng.dto.input.gzh.WxPayDto;import com.jch.mng.service.WxPayService;import com.jch.mng.utils.DoubleUtil;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Value;import org.springframework.stereotype.Service; import javax.servlet.ServletInputStream;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.BufferedOutputStream;import java.io.BufferedReader;import java.io.InputStreamReader;import java.util.HashMap;import java.util.Map; @Servicepublic class WxPayServiceImpl implements WxPayService { public String appId; public String mch_id; public String notify_url; public String key; @Value("${gzh.appid}") public void setAppId(String appId) { this.appId = appId; } @Value("${wxPay.mchId}") public void setMch_id(String mch_id) { this.mch_id = mch_id; } @Value("${wxPay.notifyUrl}") public void setNotify_url(String notify_url) { this.notify_url = notify_url; } @Value("${wxPay.key}") public void setKey(String key) { this.key = key; } private static Logger logger = LoggerFactory.getLogger(WxPayServiceImpl.class); @Override public ServiceCommonInfo<Object> pay(WxPayDto dto, HttpServletRequest request) throws Exception { logger.info("公众号微信支付, 入参:{}", JSON.toJSONString(dto)); String openid = dto.getOpenid(); String outTradeNo = dto.getOutTradeNo(); String body = dto.getBody(); Double totalFee = dto.getTotalFee(); String nonce_str = CommUtils.getRandomStringByLength(32); String spbill_create_ip = CommUtils.getIpAddr(request); Map<String, String> packageParams = new HashMap<>(); packageParams.put("appid", appId); packageParams.put("mch_id",mch_id); packageParams.put("nonce_str", nonce_str); packageParams.put("body", body); packageParams.put("out_trade_no", outTradeNo); double t = DoubleUtil.parseDouble(totalFee);//保留两位小数 int aDouble = Integer.parseInt(new java.text.DecimalFormat("0").format(t*100)); packageParams.put("total_fee", aDouble+""); packageParams.put("spbill_create_ip", spbill_create_ip); packageParams.put("notify_url", notify_url); packageParams.put("trade_type","JSAPI"); packageParams.put("openid", openid); packageParams = CommUtils.paraFilter(packageParams); String prestr = CommUtils.createLinkString(packageParams); String sign = CommUtils.sign(prestr, key, "utf-8").toUpperCase(); logger.info("统一下单请求签名:" + sign ); String xml = "<xml version='1.0' encoding='gbk'>" + "<appid>" + appId + "</appid>" + "<body><![CDATA[" + body + "]]></body>" + "<mch_id>" + mch_id + "</mch_id>" + "<nonce_str>" + nonce_str + "</nonce_str>" + "<notify_url>" + notify_url+ "</notify_url>" + "<openid>" + openid + "</openid>" + "<out_trade_no>" + outTradeNo + "</out_trade_no>" + "<spbill_create_ip>" + spbill_create_ip + "</spbill_create_ip>" + "<total_fee>" + aDouble+"" + "</total_fee>" + "<trade_type>" + "JSAPI" + "</trade_type>" + "<sign>" + sign + "</sign>" + "</xml>"; String result = CommUtils.httpRequest(WeChatConstants.unifiedOrderUrl, "POST", xml); Map map = CommUtils.doXMLParse(result); Object return_code = map.get("return_code"); logger.info("统一下单返回return_code:" + return_code ); if(return_code == "SUCCESS" || return_code.equals(return_code)){ Map<String,String> resultMap=new HashMap<String, String>(); String prepay_id = (String) map.get("prepay_id"); resultMap.put("appId", appId); Long timeStamp = System.currentTimeMillis() / 1000; resultMap.put("timeStamp", timeStamp + ""); resultMap.put("nonceStr", nonce_str); resultMap.put("package", "prepay_id=" + prepay_id); resultMap.put("signType", "MD5"); logger.info("参与paySign签名数据, 入参:{}", JSON.toJSONString(resultMap)); String linkString = CommUtils.createLinkString(resultMap); String paySign = CommUtils.sign(linkString, key, "utf-8").toUpperCase(); logger.info("获取到paySign:"+paySign); resultMap.put("paySign", paySign); return ServiceCommonInfo.success("ok", resultMap); } return ServiceCommonInfo.serviceFail("支付失败", null); } @Override public void notify(HttpServletRequest request, HttpServletResponse response) throws Exception { logger.info("进入支付回调啦啦啦啦*-*"); String resXml = ""; BufferedReader br = new BufferedReader(new InputStreamReader((ServletInputStream) request.getInputStream())); String line = null; StringBuilder sb = new StringBuilder(); while ((line = br.readLine()) != null) { sb.append(line); } br.close(); String notityXml = sb.toString(); logger.info("支付回调返回数据:"+notityXml); Map map = CommUtils.doXMLParse(notityXml); Object returnCode = map.get("return_code"); Object result_code = map.get("result_code"); if ("SUCCESS".equals(returnCode) && "SUCCESS".equals(result_code)) { Map<String, String> validParams = CommUtils.paraFilter(map); //回调验签时需要去除sign和空值参数 String validStr = CommUtils.createLinkString(validParams);//把数组所有元素,按照“参数=参数值”的模式用“&”字符拼接成字符串 String sign = CommUtils.sign(validStr, key , "utf-8").toUpperCase();//拼装生成服务器端验证的签名 logger.info("支付回调生成签名:"+sign); String transaction_id = (String) map.get("transaction_id"); String order_no = (String) map.get("out_trade_no"); String time_end = (String) map.get("time_end"); String total_fee = (String) map.get("total_fee"); //签名验证,并校验返回的订单金额是否与商户侧的订单金额一致 if (sign.equals(map.get("sign"))) { logger.info("支付回调验签通过"); //通知微信服务器已经支付成功 resXml = WeChatConstants.SUCCESSxml; } else { logger.info("微信支付回调失败!签名不一致"); } }else{ resXml = WeChatConstants.ERRORxml; } System.out.println(resXml); logger.info("微信支付回调返回数据:"+resXml); logger.info("微信支付回调数据结束"); BufferedOutputStream out = new BufferedOutputStream(response.getOutputStream()); out.write(resXml.getBytes()); out.flush(); out.close(); }}
前端页面:
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title> <meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0;" name="viewport" /></head><body> body: <input type="text" class="inp-body"><br> outTradeNo: <input type="text" class="inp-outTradeNo"><br> totalFee: <input type="text" class="inp-totalFee"><br> openid: <input type="text" class="inp-openid"><br> <button onclick="handleWxPay()">支付</button></body></html><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script><script> function handleWxPay(){ let obj = { "body":$(".inp-body").val(), "outTradeNo":$(".inp-outTradeNo").val(), "totalFee":$(".inp-totalFee").val(), "openid":$(".inp-openid").val(), } $.ajax({ type: "POST", url: "微信支付接口地址", data:JSON.stringify(obj), beforeSend: function(request) { request.setRequestHeader("Content-Type","application/json"); }, success: result=> { let obj = JSON.parse(result.data) onBridgeReady(obj) } }); } function onBridgeReady(obj){ WeixinJSBridge.invoke( 'getBrandWCPayRequest', obj, function(res){ alert(JSON.stringify(res)) if(res.err_msg == "get_brand_wcpay_request:ok" ){ // 使用以上方式判断前端返回,微信团队郑重提示: //res.err_msg将在用户支付成功后返回ok,但并不保证它绝对可靠。 } }); }</script>
访问前端页面记得加依赖:
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency>
访问页面需要写控制类:
package com.jch.mng.controller; import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping; import javax.servlet.http.HttpServletResponse; @Controllerpublic class TestPageController { @RequestMapping("/wxPayTest") public String test(HttpServletResponse response) { return "wxPay"; }}
运行项目访问。
部署项目到服务器,用手机访问即可拉起支付。
附:名词解释
商户号:微信支付分配的商户号。支付审核通过后,申请人邮箱会收到腾讯下发的开户邮件, 邮件中包含商户平台的账号、密码等重要信息。
appid:商户通过微信管理后台,申请服务号、订阅号、小程序或APP应用成功之后,微信会为每个应用分配一个唯一标识id。
openid:用户在公众号内的身份标识,一旦确认,不会再变;同一用户在不同公众号拥有不同的openid。商户后台系统通过登录授权、支付通知、查询订单等API可获取到用户的openid。主要用途是判断同一个用户,对用户发送客服消息、模版消息等。
微信管理后台:微信有很多管理平台,容易混淆,我们主要关注下面三个平台:
微信公众平台 微信公众账号申请入口和管理后台。商户可以在公众平台提交基本资料、业务资料、财务资料申请开通微信支付功能。帐号分类:服务号、订阅号、小程序、企业微信(也叫企业号,类似于企业OA)。
微信商户平台 微信支付相关的商户功能集合,包括参数配置、支付数据查询与统计、在线退款、代金券或立减优惠运营等功能。
微信开放平台 商户APP接入微信支付开放接口的申请入口,通过此平台可申请微信APP支付。
签名:商户后台和微信支付后台根据相同的密钥和算法生成一个结果,用于校验双方身份合法性。签名的算法 由微信支付制定并公开,常用的签名方式有:MD5、SHA1、SHA256、HMAC等。
密钥:作为签名算法中的盐,需要在微信平台及商户业务系统各存一份,要妥善保管。 key设置路径:微信商户平台(http://pay.weixin.qq.com)-->账户设置-->API安全-->密钥设置。
关于springboot中怎么对接微信支付问题的解答就分享到这里了,希望以上内容可以对大家有一定的帮助,如果你还有很多疑惑没有解开,可以关注编程网行业资讯频道了解更多相关知识。