微信二维码API支付实现demo
有了发送亲求的方式后就需要拼接参数向官网提供的网址发送请求,在发送请求后返回二维码的字符串,在通过前端的解析获取字符串。商户号的申请需要填写相关材料,签署电子协议等,申请后需要准备4个代码串。安装:npm install vue-qriously。该插件专门用于对微信的code进行二维码展示。在主vue中绑定value值,就可以显示结果。前端的实现需要单独使用一个工具。
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目录
1.前置条件
1.1官方文档
旧版文档:https://pay.weixin.qq.com/wiki/doc/api/index.html
ps:旧版的SDK文档官网不再支持,本文demo基于旧版本的实现
下面账号实在官网申请的
1.2申请微信商户号
商户号的申请需要填写相关材料,签署电子协议等,申请后需要准备4个代码串。
appid、mch_id、partnerkey、sign
1.2.1申请步骤
2.后端API实现
HttpClient
引入依赖
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.1</version>
</dependency>
//新版https://pay.weixin.qq.com/wiki/doc/apiv3/wechatpay/wechatpay6_0.shtml
//辅助微信接口调用的辅助函数
<dependency>
<groupId>com.github.wxpay</groupId>
<artifactId>wxpay-sdk</artifactId>
<version>0.0.3</version>
</dependency>
此版本api为老版本主要使用3个函数
//获取随机字符串
WXPayUtil.generateNonceStr()
//MAP转换为XML字符串(自动添加签名)
WXPayUtil.generateSignedXml(param, partnerkey)
//xml转换成MAP
WXPayUtil.xmlToMap(result)
代码
import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.*;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContextBuilder;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.util.EntityUtils;
import javax.net.ssl.SSLContext;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.security.KeyStore;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.text.ParseException;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
/**
* http请求客户端
*
*
*/
public class HttpClient {
private String url;
private Map<String, String> param;
private int statusCode;
private String content;
private String xmlParam;
private boolean isHttps;
private boolean isCert = false;
//证书密码 微信商户号(mch_id)
private String certPassword;
public boolean isHttps() {
return isHttps;
}
public void setHttps(boolean isHttps) {
this.isHttps = isHttps;
}
public boolean isCert() {
return isCert;
}
public void setCert(boolean cert) {
isCert = cert;
}
public String getXmlParam() {
return xmlParam;
}
public void setXmlParam(String xmlParam) {
this.xmlParam = xmlParam;
}
public HttpClient(String url, Map<String, String> param) {
this.url = url;
this.param = param;
}
public HttpClient(String url) {
this.url = url;
}
public String getCertPassword() {
return certPassword;
}
public void setCertPassword(String certPassword) {
this.certPassword = certPassword;
}
public void setParameter(Map<String, String> map) {
param = map;
}
public void addParameter(String key, String value) {
if (param == null)
param = new HashMap<String, String>();
param.put(key, value);
}
public void post() throws ClientProtocolException, IOException {
HttpPost http = new HttpPost(url);
setEntity(http);
execute(http);
}
public void put() throws ClientProtocolException, IOException {
HttpPut http = new HttpPut(url);
setEntity(http);
execute(http);
}
public void get() throws ClientProtocolException, IOException {
if (param != null) {
StringBuilder url = new StringBuilder(this.url);
boolean isFirst = true;
for (String key : param.keySet()) {
if (isFirst)
url.append("?");
else
url.append("&");
url.append(key).append("=").append(param.get(key));
}
this.url = url.toString();
}
HttpGet http = new HttpGet(url);
execute(http);
}
/**
* set http post,put param
*/
private void setEntity(HttpEntityEnclosingRequestBase http) {
if (param != null) {
List<NameValuePair> nvps = new LinkedList<NameValuePair>();
for (String key : param.keySet())
nvps.add(new BasicNameValuePair(key, param.get(key))); // 参数
http.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8)); // 设置参数
}
if (xmlParam != null) {
http.setEntity(new StringEntity(xmlParam, Consts.UTF_8));
}
}
private void execute(HttpUriRequest http) throws ClientProtocolException,
IOException {
CloseableHttpClient httpClient = null;
try {
if (isHttps) {
if(isCert) {
//TODO 需要完善
FileInputStream inputStream = new FileInputStream(new File(ConstantPropertiesUtils.CERT));
KeyStore keystore = KeyStore.getInstance("PKCS12");
char[] partnerId2charArray = certPassword.toCharArray();
keystore.load(inputStream, partnerId2charArray);
SSLContext sslContext = SSLContexts.custom().loadKeyMaterial(keystore, partnerId2charArray).build();
SSLConnectionSocketFactory sslsf =
new SSLConnectionSocketFactory(sslContext,
new String[] { "TLSv1" },
null,
SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);
httpClient = HttpClients.custom().setSSLSocketFactory(sslsf).build();
} else {
SSLContext sslContext = new SSLContextBuilder()
.loadTrustMaterial(null, new TrustStrategy() {
// 信任所有
public boolean isTrusted(X509Certificate[] chain,
String authType)
throws CertificateException {
return true;
}
}).build();
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
sslContext);
httpClient = HttpClients.custom().setSSLSocketFactory(sslsf)
.build();
}
} else {
httpClient = HttpClients.createDefault();
}
CloseableHttpResponse response = httpClient.execute(http);
try {
if (response != null) {
if (response.getStatusLine() != null)
statusCode = response.getStatusLine().getStatusCode();
HttpEntity entity = response.getEntity();
// 响应内容
content = EntityUtils.toString(entity, Consts.UTF_8);
}
} finally {
response.close();
}
} catch (Exception e) {
e.printStackTrace();
} finally {
httpClient.close();
}
}
public int getStatusCode() {
return statusCode;
}
public String getContent() throws ParseException, IOException {
return content;
}
}
有了发送请求的方式后就需要拼接参数向官网提供的网址发送请求,在发送请求后返回二维码的字符串,在通过前端的解析获取字符串
@Override
public Map createNative(Long orderId) {
try {
// 1.根据orderid查询订单信息
OrderInfo orderInfo = orderService.getById(orderId);
// 2.根据订单信息,交易类型创建交易记录
paymentService.savePaymentInfo(orderInfo, PaymentTypeEnum.WEIXIN.getStatus());
// 3.封装调用微信接口参数
HashMap<String, String> paramMap = new HashMap<>();
paramMap.put("appid", ConstantPropertiesUtils.APPID);
paramMap.put("mch_id", ConstantPropertiesUtils.PARTNER);
paramMap.put("nonce_str", WXPayUtil.generateNonceStr());
String body = orderInfo.getReserveDate() + "就诊" + orderInfo.getDepname();
paramMap.put("body", body);
paramMap.put("out_trade_no", orderInfo.getOutTradeNo());
paramMap.put("total_fee", "1"); //设置交易金额
paramMap.put("spbill_create_ip", "127.0.0.1");
paramMap.put("notify_url", "http://guli.shop/api/order/weixinPay/weixinNotify");
paramMap.put("trade_type", "NATIVE");
// 4.创建客户都安兑现是(url)
HttpClient client = new HttpClient("https://api.mch.weixin.qq.com/pay/unifiedorder");
// 5.向客户都安对象存入参数(map=>xml)
client.setXmlParam(WXPayUtil.generateSignedXml(paramMap, ConstantPropertiesUtils.PARTNERKEY));
client.setHttps(true);
// 6.客户都安对象发送请求
client.post();
// 7.获取相应(xml),转换类型(xml=>map)
String xml = client.getContent();
System.out.println("xml=" + xml);
Map<String, String> resultMap = WXPayUtil.xmlToMap(xml);
// 8.封装返回
HashMap<String, Object> map = new HashMap<>();
map.put("orderId", orderId);
map.put("totalFee", orderInfo.getAmount());
map.put("resultCode", resultMap.get("result_code"));
map.put("codeUrl", resultMap.get("code_url"));
return map;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
3.前端实现
前端的实现需要单独使用一个工具vue-qriously该插件专门用于对微信的code进行二维码展示
安装:npm install vue-qriously
需要在main.js或者插件中启动工具
import Vue from 'vue'
import VueQriously from 'vue-qriously'
Vue.use(VueQriously)
页面实现
在主vue中绑定value值,就可以显示结果
<qriously :value="payObj.codeUrl" :size="220"></qriously>
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