diff --git a/src/main/java/com/peanut/modules/pay/weChatPay/dto/WeChatBasePayData.java b/src/main/java/com/peanut/modules/pay/weChatPay/dto/WeChatBasePayData.java
new file mode 100644
index 00000000..b929a532
--- /dev/null
+++ b/src/main/java/com/peanut/modules/pay/weChatPay/dto/WeChatBasePayData.java
@@ -0,0 +1,32 @@
+package com.peanut.modules.pay.weChatPay.dto;
+
+import com.peanut.modules.pay.weChatPay.enums.WxNotifyType;
+import lombok.Data;
+
+import java.math.BigDecimal;
+@Data
+public class WeChatBasePayData {
+    /**
+     * 商品描述
+     */
+    private String title;
+
+    /**
+     * 商家订单号，对应 out_trade_no
+     */
+    private String orderId;
+
+    /**
+     * 订单金额
+     */
+    private BigDecimal price;
+
+    /**
+     * 回调地址
+     */
+    private WxNotifyType notify;
+
+    private  Integer  buyOrderId;
+
+
+}
diff --git a/src/main/java/com/peanut/modules/pay/weChatPay/dto/WechatDto.java b/src/main/java/com/peanut/modules/pay/weChatPay/dto/WechatDto.java
new file mode 100644
index 00000000..9995a3cf
--- /dev/null
+++ b/src/main/java/com/peanut/modules/pay/weChatPay/dto/WechatDto.java
@@ -0,0 +1,33 @@
+package com.peanut.modules.pay.weChatPay.dto;
+
+import lombok.Data;
+import java.io.Serializable;
+
+
+@Data
+public class WechatDto implements Serializable {
+
+
+
+
+    private String orderSn;
+
+    private Integer buyOrderId;
+
+
+    public String getOrderSn() {
+        return orderSn;
+    }
+
+    public void setOrderSn(String orderSn) {
+        this.orderSn = orderSn;
+    }
+
+    public Integer getBuyOrderId() {
+        return buyOrderId;
+    }
+
+    public void setBuyOrderId(Integer buyOrderId) {
+        this.buyOrderId = buyOrderId;
+    }
+}
diff --git a/src/main/java/com/peanut/modules/pay/weChatPay/dto/WxchatCallbackRefundData.java b/src/main/java/com/peanut/modules/pay/weChatPay/dto/WxchatCallbackRefundData.java
new file mode 100644
index 00000000..a6f1cc39
--- /dev/null
+++ b/src/main/java/com/peanut/modules/pay/weChatPay/dto/WxchatCallbackRefundData.java
@@ -0,0 +1,79 @@
+package com.peanut.modules.pay.weChatPay.dto;
+
+import cn.hutool.core.date.DateUtil;
+import lombok.Data;
+import lombok.extern.slf4j.Slf4j;
+
+import java.math.BigDecimal;
+import java.util.Date;
+/**
+ * @author
+ * @version 1.0
+ * @description 微信支付退款回调返回的数据
+ * @date
+ */
+@Data
+@Slf4j
+public class WxchatCallbackRefundData {
+    /**
+     * 商户订单号
+     */
+    private String orderId;
+
+
+    /**
+     * 商户退款单号,out_refund_no
+     */
+    private String refundId;
+
+    /**
+     * 微信支付系统生成的订单号
+     */
+    private String transactionId;
+
+    /**
+     * 微信支付系统生成的退款订单号
+     */
+    private String transactionRefundId;
+
+    /**
+     * 退款渠道
+     * ORIGINAL：原路退款
+     * BALANCE：退回到余额
+     * OTHER_BALANCE：原账户异常退到其他余额账户
+     * OTHER_BANKCARD：原银行卡异常退到其他银行卡
+     */
+    private String 	channel;
+
+    /**
+     * 退款成功时间
+     * 当前退款成功时才有此返回值
+     */
+    private Date successTime;
+
+    /**
+     * 退款状态
+     * 退款到银行发现用户的卡作废或者冻结了，导致原路退款银行卡失败，可前往商户平台-交易中心，手动处理此笔退款。
+     * SUCCESS：退款成功
+     * CLOSED：退款关闭
+     * PROCESSING：退款处理中
+     * ABNORMAL：退款异常
+     */
+    private String 	status;
+
+    /**
+     * 退款金额
+     */
+    private BigDecimal refundMoney;
+
+
+    public Date getSuccessTime() {
+        return successTime;
+    }
+
+    public void setSuccessTime(String successTime) {
+        // Hutool工具包的方法，自动识别一些常用格式的日期字符串
+        this.successTime = DateUtil.parse(successTime);
+    }
+
+}
diff --git a/src/main/java/com/peanut/modules/pay/weChatPay/enums/WxApiType.java b/src/main/java/com/peanut/modules/pay/weChatPay/enums/WxApiType.java
new file mode 100644
index 00000000..7bf99ce6
--- /dev/null
+++ b/src/main/java/com/peanut/modules/pay/weChatPay/enums/WxApiType.java
@@ -0,0 +1,56 @@
+package com.peanut.modules.pay.weChatPay.enums;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@AllArgsConstructor
+@Getter
+public enum WxApiType {
+
+
+	/**
+	 * APP下单
+	 */
+	APP_PAY("/v3/pay/transactions/app"),
+
+	/**
+	 * Native下单
+	 */
+	NATIVE_PAY_V2("/pay/unifiedorder"),
+
+	/**
+	 * 查询订单
+	 */
+	ORDER_QUERY_BY_NO("/v3/pay/transactions/out-trade-no/%s"),
+
+	/**
+	 * 关闭订单
+	 */
+	CLOSE_ORDER_BY_NO("/v3/pay/transactions/out-trade-no/%s/close"),
+
+	/**
+	 * 申请退款
+	 */
+	DOMESTIC_REFUNDS("/v3/refund/domestic/refunds"),
+
+	/**
+	 * 查询单笔退款
+	 */
+	DOMESTIC_REFUNDS_QUERY("/v3/refund/domestic/refunds/%s"),
+
+	/**
+	 * 申请交易账单
+	 */
+	TRADE_BILLS("/v3/bill/tradebill"),
+
+	/**
+	 * 申请资金账单
+	 */
+	FUND_FLOW_BILLS("/v3/bill/fundflowbill");
+
+
+	/**
+	 * 类型
+	 */
+	private final String type;
+}
diff --git a/src/main/java/com/peanut/modules/pay/weChatPay/enums/WxNotifyType.java b/src/main/java/com/peanut/modules/pay/weChatPay/enums/WxNotifyType.java
new file mode 100644
index 00000000..e9ecbec7
--- /dev/null
+++ b/src/main/java/com/peanut/modules/pay/weChatPay/enums/WxNotifyType.java
@@ -0,0 +1,31 @@
+package com.peanut.modules.pay.weChatPay.enums;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@AllArgsConstructor
+@Getter
+public enum WxNotifyType {
+
+	/**
+	 * 支付通知
+	 * https://192.168.110.100:9100/pb/weChat/payNotify
+	 */
+	NATIVE_NOTIFY("/pay/payNotify"),
+
+	/**
+	 * 支付通知
+	 */
+	NATIVE_NOTIFY_V2("/api/wx-pay-v2/native/notify"),
+
+
+	/**
+	 * 退款结果通知
+	 */
+	REFUND_NOTIFY("/api/wx-pay/refunds/notify");
+
+	/**
+	 * 类型
+	 */
+	private final String type;
+}
diff --git a/src/main/java/com/peanut/modules/pay/weChatPay/service/WxpayService.java b/src/main/java/com/peanut/modules/pay/weChatPay/service/WxpayService.java
new file mode 100644
index 00000000..4d7e91d8
--- /dev/null
+++ b/src/main/java/com/peanut/modules/pay/weChatPay/service/WxpayService.java
@@ -0,0 +1,9 @@
+package com.peanut.modules.pay.weChatPay.service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import com.peanut.modules.book.entity.PayWechatOrderEntity;
+import org.springframework.stereotype.Service;
+
+@Service
+public interface WxpayService extends IService<PayWechatOrderEntity> {
+}
diff --git a/src/main/java/com/peanut/modules/pay/weChatPay/service/impl/WxpayServiceImpl.java b/src/main/java/com/peanut/modules/pay/weChatPay/service/impl/WxpayServiceImpl.java
new file mode 100644
index 00000000..58e53416
--- /dev/null
+++ b/src/main/java/com/peanut/modules/pay/weChatPay/service/impl/WxpayServiceImpl.java
@@ -0,0 +1,11 @@
+package com.peanut.modules.pay.weChatPay.service.impl;
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.peanut.modules.book.dao.PayWechatOrderDao;
+import com.peanut.modules.book.entity.PayWechatOrderEntity;
+import com.peanut.modules.pay.weChatPay.service.WxpayService;
+import org.springframework.stereotype.Service;
+
+@Service
+public class WxpayServiceImpl extends   ServiceImpl<PayWechatOrderDao ,PayWechatOrderEntity> implements WxpayService {
+}
diff --git a/src/main/java/com/peanut/modules/pay/weChatPay/util/WechatPayValidatorForRequest.java b/src/main/java/com/peanut/modules/pay/weChatPay/util/WechatPayValidatorForRequest.java
new file mode 100644
index 00000000..d57b3b05
--- /dev/null
+++ b/src/main/java/com/peanut/modules/pay/weChatPay/util/WechatPayValidatorForRequest.java
@@ -0,0 +1,97 @@
+package com.peanut.modules.pay.weChatPay.util;
+
+
+import com.wechat.pay.contrib.apache.httpclient.auth.Verifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.servlet.http.HttpServletRequest;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.time.DateTimeException;
+import java.time.Duration;
+import java.time.Instant;
+
+import static com.wechat.pay.contrib.apache.httpclient.constant.WechatPayHttpHeaders.*;
+
+public class WechatPayValidatorForRequest {
+    protected static final Logger log = LoggerFactory.getLogger(WechatPayValidatorForRequest.class);
+    /**
+     * 应答超时时间，单位为分钟
+     */
+    protected static final long RESPONSE_EXPIRED_MINUTES = 5;
+    protected final Verifier verifier;
+    protected final String body;
+    protected final String requestId;
+
+    public WechatPayValidatorForRequest(Verifier verifier, String body, String requestId) {
+        this.verifier = verifier;
+        this.body = body;
+        this.requestId = requestId;
+    }
+
+    protected static IllegalArgumentException parameterError(String message, Object... args) {
+        message = String.format(message, args);
+        return new IllegalArgumentException("parameter error: " + message);
+    }
+
+    protected static IllegalArgumentException verifyFail(String message, Object... args) {
+        message = String.format(message, args);
+        return new IllegalArgumentException("signature verify fail: " + message);
+    }
+
+    public final boolean validate(HttpServletRequest request) throws IOException {
+        try {
+            validateParameters(request);
+
+            String message = buildMessage(request);
+            String serial = request.getHeader(WECHAT_PAY_SERIAL);
+            String signature = request.getHeader(WECHAT_PAY_SIGNATURE);
+
+            if (!verifier.verify(serial, message.getBytes(StandardCharsets.UTF_8), signature)) {
+
+                throw verifyFail("serial=[%s] message=[%s] sign=[%s], request-id=[%s]",
+                        serial, message, signature, request.getHeader(REQUEST_ID));
+            }
+        } catch (IllegalArgumentException e) {
+            log.warn(e.getMessage());
+            return false;
+        }
+
+        return true;
+    }
+
+    protected final void validateParameters(HttpServletRequest request) {
+
+        // NOTE: ensure HEADER_WECHAT_PAY_TIMESTAMP at last
+        String[] headers = {WECHAT_PAY_SERIAL, WECHAT_PAY_SIGNATURE, WECHAT_PAY_NONCE, WECHAT_PAY_TIMESTAMP};
+
+        String header = null;
+        for (String headerName : headers) {
+            header = request.getHeader(headerName);
+            if (header == null) {
+                throw parameterError("empty [%s], request-id=[%s]", headerName, requestId);
+            }
+        }
+
+        String timestampStr = header;
+        try {
+            Instant responseTime = Instant.ofEpochSecond(Long.parseLong(timestampStr));
+            // 拒绝过期应答
+            if (Duration.between(responseTime, Instant.now()).abs().toMinutes() >= RESPONSE_EXPIRED_MINUTES) {
+                throw parameterError("timestamp=[%s] expires, request-id=[%s]", timestampStr, requestId);
+            }
+        } catch (DateTimeException | NumberFormatException e) {
+            throw parameterError("invalid timestamp=[%s], request-id=[%s]", timestampStr, requestId);
+        }
+    }
+
+    protected final String buildMessage(HttpServletRequest request) throws IOException {
+        String timestamp = request.getHeader(WECHAT_PAY_TIMESTAMP);
+        String nonce = request.getHeader(WECHAT_PAY_NONCE);
+        return timestamp + "\n"
+                + nonce + "\n"
+                + body + "\n";
+    }
+
+}
diff --git a/src/main/java/com/peanut/modules/pay/weChatPay/util/WechatRefundCallback.java b/src/main/java/com/peanut/modules/pay/weChatPay/util/WechatRefundCallback.java
new file mode 100644
index 00000000..e8f7a0d9
--- /dev/null
+++ b/src/main/java/com/peanut/modules/pay/weChatPay/util/WechatRefundCallback.java
@@ -0,0 +1,42 @@
+package com.peanut.modules.pay.weChatPay.util;
+
+
+import com.peanut.modules.pay.weChatPay.dto.WxchatCallbackRefundData;
+
+import java.lang.reflect.Type;
+
+
+/**
+ * 退款处理接口，为了防止项目开发人员，不手动判断退款失败的情况
+ * 退款失败：退款到银行发现用户的卡作废或者冻结了，导致原路退款银行卡失败，可前往商户平台-交易中心，手动处理此笔退款
+ */
+
+public interface     WechatRefundCallback {
+
+
+    /*
+     * WxchatCallbackRefundData是微信支付退款回调数据的格式，在退款请求完成后，微信支付会将退款结果发送给商户的服务器，
+     * 以此通知商户退款结果。refundData表示退款回调的数据，包含退款结果的各种信息，如退款金额、退款状态、退款时间等等。
+     * */
+
+
+    /**
+     * 退款成功处理情况
+     */
+     void success(WxchatCallbackRefundData refundData);
+
+
+
+    /**
+     * 退款失败处理情况
+     */
+
+
+    void  find(WxchatCallbackRefundData refundData);
+
+
+
+
+
+
+}
diff --git a/src/main/java/com/peanut/modules/pay/weChatPay/util/WxPayUtil.java b/src/main/java/com/peanut/modules/pay/weChatPay/util/WxPayUtil.java
new file mode 100644
index 00000000..ad7e3020
--- /dev/null
+++ b/src/main/java/com/peanut/modules/pay/weChatPay/util/WxPayUtil.java
@@ -0,0 +1,147 @@
+package com.peanut.modules.pay.weChatPay.util;
+
+
+    import com.alibaba.fastjson.JSONObject;
+import com.wechat.pay.contrib.apache.httpclient.WechatPayHttpClientBuilder;
+import com.wechat.pay.contrib.apache.httpclient.util.PemUtil;
+import lombok.Data;
+import org.apache.http.HttpEntity;
+import org.apache.http.HttpResponse;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.entity.StringEntity;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.util.EntityUtils;
+
+import org.springframework.stereotype.Component;
+
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.security.PrivateKey;
+import java.security.Signature;
+import java.security.cert.X509Certificate;
+import java.util.ArrayList;
+import java.util.Base64;
+
+    @Component
+    @Data
+    public class WxPayUtil {
+
+        public static final String mchId = "1612860909"; // 商户号
+
+        public static final String appId = "wx47134a8f15083734"; // appId
+
+        public static final String apiV3Key = "4aYFklzaULeGlr7oJPZ6rHWKcxjihZUF"; // apiV3秘钥
+        //商户私钥路径
+        public static final String privateKeyUrl = "C:\\Users\\Administrator\\IdeaProjects\\peanut_book\\src\\main\\resources\\cent\\apiclient_key.pem";
+
+        //平台证书路径
+        public static final String wechatPayCertificateUrl = "C:\\Users\\Administrator\\IdeaProjects\\peanut_book\\src\\main\\resources\\cent\\wechatpay_7B5676E3CDF56680D0414A009CE501C844DBE2D6.pem";
+        //第一步申请完证书后，在API证书哪里点击管理证书就能看到
+        public static final String mchSerialNo = "679AECB2F7AC4183033F713828892BA640E4EEE3"; // 商户证书序列号
+
+        private CloseableHttpClient httpClient;
+
+        public void setup()  {
+            //   PrivateKey merchantPrivateKey = PemUtil.loadPrivateKey(privateKey);
+            PrivateKey merchantPrivateKey = null;
+            X509Certificate wechatPayCertificate = null;
+
+            try {
+                merchantPrivateKey = PemUtil.loadPrivateKey(
+                        new FileInputStream(privateKeyUrl));
+                wechatPayCertificate = PemUtil.loadCertificate(
+                        new FileInputStream(wechatPayCertificateUrl));
+
+            } catch (FileNotFoundException e) {
+                e.printStackTrace();
+            }
+
+            ArrayList<X509Certificate> listCertificates = new ArrayList<>();
+            listCertificates.add(wechatPayCertificate);
+
+            WechatPayHttpClientBuilder builder = WechatPayHttpClientBuilder.create()
+                    .withMerchant(mchId, mchSerialNo, merchantPrivateKey)
+                    .withWechatPay(listCertificates);
+            httpClient = builder.build();
+        }
+
+        /**
+         * wxMchid商户号
+         * wxCertno证书编号
+         * wxCertPath证书地址
+         * wxPaternerKey   v3秘钥
+         * url 下单地址
+         * body 构造好的消息体
+         */
+        public JSONObject doPostWexinV3(String url, String body) {
+            if (httpClient == null) {
+                setup();
+            }
+
+            HttpPost httpPost = new HttpPost(url);
+            httpPost.addHeader("Content-Type", "application/json;chartset=utf-8");
+            httpPost.addHeader("Accept", "application/json");
+            try {
+                if (body == null) {
+                    throw new IllegalArgumentException("data参数不能为空");
+                }
+                StringEntity stringEntity = new StringEntity(body, "utf-8");
+                httpPost.setEntity(stringEntity);
+                // 直接执行execute方法，官方会自动处理签名和验签，并进行证书自动更新
+                HttpResponse httpResponse = httpClient.execute(httpPost);
+                HttpEntity httpEntity = httpResponse.getEntity();
+
+                if (httpResponse.getStatusLine().getStatusCode() == 200) {
+                    String jsonResult = EntityUtils.toString(httpEntity);
+
+                    return JSONObject.parseObject(jsonResult);
+                } else {
+                    System.err.println("微信支付错误信息" + EntityUtils.toString(httpEntity));
+                }
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+            return null;
+
+        }
+
+        //获取签名
+        public String getSign(String appId, long timestamp, String nonceStr, String pack){
+            String message = buildMessage(appId, timestamp, nonceStr, pack);
+            String paySign= null;
+            try {
+                paySign = sign(message.getBytes("utf-8"));
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+            return paySign;
+        }
+
+        private String buildMessage(String appId, long timestamp, String nonceStr, String pack) {
+            return appId + "\n"
+                    + timestamp + "\n"
+                    + nonceStr + "\n"
+                    + pack + "\n";
+        }
+        private String sign(byte[] message) throws Exception{
+            PrivateKey merchantPrivateKey = null;
+            X509Certificate wechatPayCertificate = null;
+
+            try {
+                merchantPrivateKey = PemUtil.loadPrivateKey(
+                        new FileInputStream(privateKeyUrl));
+                wechatPayCertificate = PemUtil.loadCertificate(
+                        new FileInputStream(wechatPayCertificateUrl));
+
+            } catch (FileNotFoundException e) {
+                e.printStackTrace();
+            }
+            Signature sign = Signature.getInstance("SHA256withRSA");
+            //这里需要一个PrivateKey类型的参数，就是商户的私钥。
+            sign.initSign(merchantPrivateKey);
+            sign.update(message);
+            return Base64.getEncoder().encodeToString(sign.sign());
+        }
+    }
+
+