diff --git a/sky-common/src/main/java/com/sky/utils/WeChatPayUtil.java b/sky-common/src/main/java/com/sky/utils/WeChatPayUtil.java
index 804d7ed..6113438 100644
--- a/sky-common/src/main/java/com/sky/utils/WeChatPayUtil.java
+++ b/sky-common/src/main/java/com/sky/utils/WeChatPayUtil.java
@@ -21,6 +21,7 @@ import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.math.BigDecimal;
+import java.nio.file.Files;
 import java.security.PrivateKey;
 import java.security.Signature;
 import java.security.cert.X509Certificate;
@@ -188,7 +189,7 @@ public class WeChatPayUtil {
             byte[] message = signMessage.getBytes();
 
             Signature signature = Signature.getInstance("SHA256withRSA");
-            signature.initSign(PemUtil.loadPrivateKey(new FileInputStream(new File(weChatProperties.getPrivateKeyFilePath()))));
+            signature.initSign(PemUtil.loadPrivateKey(Files.newInputStream(new File(weChatProperties.getPrivateKeyFilePath()).toPath())));
             signature.update(message);
             String packageSign = Base64.getEncoder().encodeToString(signature.sign());
 
diff --git a/sky-server/src/main/java/com/sky/controller/notify/PayNotifyController.java b/sky-server/src/main/java/com/sky/controller/notify/PayNotifyController.java
new file mode 100644
index 0000000..df59cf4
--- /dev/null
+++ b/sky-server/src/main/java/com/sky/controller/notify/PayNotifyController.java
@@ -0,0 +1,117 @@
+package com.sky.controller.notify;
+
+import com.alibaba.druid.support.json.JSONUtils;
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONObject;
+import com.sky.properties.WeChatProperties;
+import com.sky.service.OrderService;
+import com.wechat.pay.contrib.apache.httpclient.util.AesUtil;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.http.entity.ContentType;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.BufferedReader;
+import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+
+/**
+ * 支付回调相关接口
+ */
+@RestController
+@RequestMapping("/notify")
+@Slf4j
+public class PayNotifyController {
+    @Autowired
+    private OrderService orderService;
+    @Autowired
+    private WeChatProperties weChatProperties;
+
+    /**
+     * 支付成功回调
+     *
+     * @param request
+     */
+    @RequestMapping("/paySuccess")
+    public void paySuccessNotify(HttpServletRequest request, HttpServletResponse response) throws Exception {
+        //读取数据
+        String body = readData(request);
+        log.info("支付成功回调：{}", body);
+
+        //数据解密
+        String plainText = decryptData(body);
+        log.info("解密后的文本：{}", plainText);
+
+        JSONObject jsonObject = JSON.parseObject(plainText);
+        String outTradeNo = jsonObject.getString("out_trade_no");//商户平台订单号
+        String transactionId = jsonObject.getString("transaction_id");//微信支付交易号
+
+        log.info("商户平台订单号：{}", outTradeNo);
+        log.info("微信支付交易号：{}", transactionId);
+
+        //业务处理，修改订单状态、来单提醒
+        orderService.paySuccess(outTradeNo);
+
+        //给微信响应
+        responseToWeixin(response);
+    }
+
+    /**
+     * 读取数据
+     *
+     * @param request
+     * @return
+     * @throws Exception
+     */
+    private String readData(HttpServletRequest request) throws Exception {
+        BufferedReader reader = request.getReader();
+        StringBuilder result = new StringBuilder();
+        String line = null;
+        while ((line = reader.readLine()) != null) {
+            if (result.length() > 0) {
+                result.append("\n");
+            }
+            result.append(line);
+        }
+        return result.toString();
+    }
+
+    /**
+     * 数据解密
+     *
+     * @param body
+     * @return
+     * @throws Exception
+     */
+    private String decryptData(String body) throws Exception {
+        JSONObject resultObject = JSON.parseObject(body);
+        JSONObject resource = resultObject.getJSONObject("resource");
+        String ciphertext = resource.getString("ciphertext");
+        String nonce = resource.getString("nonce");
+        String associatedData = resource.getString("associated_data");
+
+        AesUtil aesUtil = new AesUtil(weChatProperties.getApiV3Key().getBytes(StandardCharsets.UTF_8));
+        //密文解密
+        String plainText = aesUtil.decryptToString(associatedData.getBytes(StandardCharsets.UTF_8),
+                nonce.getBytes(StandardCharsets.UTF_8),
+                ciphertext);
+
+        return plainText;
+    }
+
+    /**
+     * 给微信响应
+     * @param response
+     */
+    private void responseToWeixin(HttpServletResponse response) throws Exception{
+        response.setStatus(200);
+        HashMap<Object, Object> map = new HashMap<>();
+        map.put("code", "SUCCESS");
+        map.put("message", "SUCCESS");
+        response.setHeader("Content-type", ContentType.APPLICATION_JSON.toString());
+        response.getOutputStream().write(JSONUtils.toJSONString(map).getBytes(StandardCharsets.UTF_8));
+        response.flushBuffer();
+    }
+}
diff --git a/sky-server/src/main/java/com/sky/controller/user/OrderController.java b/sky-server/src/main/java/com/sky/controller/user/OrderController.java
index 540cab4..9286c5b 100644
--- a/sky-server/src/main/java/com/sky/controller/user/OrderController.java
+++ b/sky-server/src/main/java/com/sky/controller/user/OrderController.java
@@ -1,16 +1,16 @@
 package com.sky.controller.user;
 
+import com.sky.dto.OrdersPaymentDTO;
 import com.sky.dto.OrdersSubmitDTO;
 import com.sky.result.Result;
 import com.sky.service.OrderService;
+import com.sky.vo.OrderPaymentVO;
 import com.sky.vo.OrderSubmitVO;
 import io.swagger.annotations.Api;
+import io.swagger.annotations.ApiOperation;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
-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 org.springframework.web.bind.annotation.*;
 
 @RestController("userOrderController")
 @RequestMapping("/user/order")
@@ -22,9 +22,24 @@ public class OrderController {
     private OrderService orderService;
 
     @PostMapping("/submit")
-    public Result<OrderSubmitVO>  submit(@RequestBody OrdersSubmitDTO ordersSubmitDTO) {
+    public Result<OrderSubmitVO> submit(@RequestBody OrdersSubmitDTO ordersSubmitDTO) {
         log.info("order submit: {}", ordersSubmitDTO);
         OrderSubmitVO orderSubmitVO = orderService.submitOrder(ordersSubmitDTO);
         return Result.success(orderSubmitVO);
     }
+
+    /**
+     * 订单支付
+     *
+     * @param ordersPaymentDTO
+     * @return
+     */
+    @PutMapping("/payment")
+    @ApiOperation("订单支付")
+    public Result<OrderPaymentVO> payment(@RequestBody OrdersPaymentDTO ordersPaymentDTO) throws Exception {
+        log.info("订单支付：{}", ordersPaymentDTO);
+        OrderPaymentVO orderPaymentVO = orderService.payment(ordersPaymentDTO);
+        log.info("生成预支付交易单：{}", orderPaymentVO);
+        return Result.success(orderPaymentVO);
+    }
 }
diff --git a/sky-server/src/main/java/com/sky/mapper/OrderMapper.java b/sky-server/src/main/java/com/sky/mapper/OrderMapper.java
index a8f3b3c..67628b1 100644
--- a/sky-server/src/main/java/com/sky/mapper/OrderMapper.java
+++ b/sky-server/src/main/java/com/sky/mapper/OrderMapper.java
@@ -2,9 +2,31 @@ package com.sky.mapper;
 
 import com.sky.entity.Orders;
 import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Select;
+import org.apache.ibatis.annotations.Update;
+
+import java.time.LocalDateTime;
 
 @Mapper
 public interface OrderMapper {
 
     void insert(Orders orders);
+
+    /**
+     * 根据订单号查询订单
+     *
+     * @param orderNumber
+     */
+    @Select("select * from orders where number = #{orderNumber}")
+    Orders getByNumber(String orderNumber);
+
+    /**
+     * 修改订单信息
+     *
+     * @param orders
+     */
+    void update(Orders orders);
+
+    @Update("update orders set status = #{orderStatus},pay_status = #{orderPaidStatus} ,checkout_time = #{check_out_time} where id = #{id}")
+    void updateStatus(Integer orderStatus, Integer orderPaidStatus, LocalDateTime check_out_time, Long id);
 }
diff --git a/sky-server/src/main/java/com/sky/mapper/UserMapper.java b/sky-server/src/main/java/com/sky/mapper/UserMapper.java
index 39cb86c..3a9c2d1 100644
--- a/sky-server/src/main/java/com/sky/mapper/UserMapper.java
+++ b/sky-server/src/main/java/com/sky/mapper/UserMapper.java
@@ -20,4 +20,7 @@ public interface UserMapper {
      * @param user
      */
     void insert(User user);
+
+    @Select("select * from sky_take_out.user where id = #{userId}")
+    User getById(Long userId);
 }
diff --git a/sky-server/src/main/java/com/sky/service/OrderService.java b/sky-server/src/main/java/com/sky/service/OrderService.java
index d9bf54b..84cc043 100644
--- a/sky-server/src/main/java/com/sky/service/OrderService.java
+++ b/sky-server/src/main/java/com/sky/service/OrderService.java
@@ -1,6 +1,8 @@
 package com.sky.service;
 
+import com.sky.dto.OrdersPaymentDTO;
 import com.sky.dto.OrdersSubmitDTO;
+import com.sky.vo.OrderPaymentVO;
 import com.sky.vo.OrderSubmitVO;
 import org.springframework.stereotype.Service;
 
@@ -13,4 +15,18 @@ public interface OrderService {
      * @return
      */
     OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO);
+
+    /**
+     * 订单支付
+     * @param ordersPaymentDTO
+     * @return
+     */
+    OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception;
+
+    /**
+     * 支付成功，修改订单状态
+     * @param outTradeNo
+     */
+    void paySuccess(String outTradeNo);
+
 }
diff --git a/sky-server/src/main/java/com/sky/service/impl/OrderServiceImpl.java b/sky-server/src/main/java/com/sky/service/impl/OrderServiceImpl.java
index 06760b1..93498f0 100644
--- a/sky-server/src/main/java/com/sky/service/impl/OrderServiceImpl.java
+++ b/sky-server/src/main/java/com/sky/service/impl/OrderServiceImpl.java
@@ -1,19 +1,18 @@
 package com.sky.service.impl;
 
+import com.alibaba.fastjson.JSONObject;
 import com.sky.constant.MessageConstant;
 import com.sky.context.BaseContext;
+import com.sky.dto.OrdersPaymentDTO;
 import com.sky.dto.OrdersSubmitDTO;
-import com.sky.entity.AddressBook;
-import com.sky.entity.OrderDetail;
-import com.sky.entity.Orders;
-import com.sky.entity.ShoppingCart;
+import com.sky.entity.*;
 import com.sky.exception.AddressBookBusinessException;
+import com.sky.exception.OrderBusinessException;
 import com.sky.exception.ShoppingCartBusinessException;
-import com.sky.mapper.AddressBookMapper;
-import com.sky.mapper.OrderDetailMapper;
-import com.sky.mapper.OrderMapper;
-import com.sky.mapper.ShoppingCartMapper;
+import com.sky.mapper.*;
 import com.sky.service.OrderService;
+import com.sky.utils.WeChatPayUtil;
+import com.sky.vo.OrderPaymentVO;
 import com.sky.vo.OrderSubmitVO;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.BeanUtils;
@@ -21,6 +20,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.math.BigDecimal;
 import java.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.List;
@@ -37,6 +37,10 @@ public class OrderServiceImpl implements OrderService {
     private ShoppingCartMapper shoppingCartMapper;
     @Autowired
     private OrderDetailMapper orderDetailMapper;
+    @Autowired
+    private UserMapper userMapper;
+    @Autowired
+    private WeChatPayUtil weChatPayUtil;
 
     @Override
     @Transactional
@@ -90,4 +94,74 @@ public class OrderServiceImpl implements OrderService {
                 .orderAmount(orders.getAmount())
                 .build();
     }
+
+    /**
+     * 订单支付
+     *
+     * @param ordersPaymentDTO
+     * @return
+     */
+    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
+        // 当前登录用户id
+
+        /*Long userId = BaseContext.getCurrentId();
+        User user = userMapper.getById(userId);
+
+        //调用微信支付接口，生成预支付交易单
+        JSONObject jsonObject = weChatPayUtil.pay(
+                ordersPaymentDTO.getOrderNumber(), //商户订单号
+                new BigDecimal(0.01), //支付金额，单位 元
+                "苍穹外卖订单", //商品描述
+                user.getOpenid() //微信用户的openid
+        );
+
+        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
+            throw new OrderBusinessException("该订单已支付");
+        }*/
+
+        JSONObject jsonObject = new JSONObject();
+        jsonObject.put("code","ORDERPAID");
+
+        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
+        vo.setPackageStr(jsonObject.getString("package"));
+
+        //为替代微信支付成功后的数据库订单状态更新，多定义一个方法进行修改
+
+        Integer OrderPaidStatus = Orders.PAID; //支付状态，已支付
+
+        Integer OrderStatus = Orders.TO_BE_CONFIRMED;  //订单状态，待接单
+
+
+        //发现没有将支付时间 check_out属性赋值，所以在这里更新
+
+        LocalDateTime check_out_time = LocalDateTime.now();
+
+
+        Long orderId = orderMapper.getByNumber(ordersPaymentDTO.getOrderNumber()).getId();
+        orderMapper.updateStatus(OrderStatus, OrderPaidStatus, check_out_time, orderId);
+
+        return new OrderPaymentVO();
+    }
+
+    /**
+     * 支付成功，修改订单状态
+     *
+     * @param outTradeNo
+     */
+    public void paySuccess(String outTradeNo) {
+
+        // 根据订单号查询订单
+        Orders ordersDB = orderMapper.getByNumber(outTradeNo);
+
+        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
+        Orders orders = Orders.builder()
+                .id(ordersDB.getId())
+                .status(Orders.TO_BE_CONFIRMED)
+                .payStatus(Orders.PAID)
+                .checkoutTime(LocalDateTime.now())
+                .build();
+
+        orderMapper.update(orders);
+    }
+
 }
diff --git a/sky-server/src/main/resources/application.properties b/sky-server/src/main/resources/application.properties
index bddeb21..8257aef 100644
--- a/sky-server/src/main/resources/application.properties
+++ b/sky-server/src/main/resources/application.properties
@@ -35,4 +35,11 @@ spring.servlet.multipart.max-file-size=${spring.servlet.multipart.max-file-size}
 spring.servlet.multipart.max-request-size=${spring.servlet.multipart.max-request-size}
 
 sky.wechat.appid=${sky.wechat.appid}
-sky.wechat.secret=${sky.wechat.secret}
\ No newline at end of file
+sky.wechat.secret=${sky.wechat.secret}
+sky.wechat.mchid=${sky.wechat.mchid}
+sky.wechat.mch-serial-no=${sky.wechat.mch-serial-no}
+sky.wechat.private-key-file-path=${sky.wechat.private-key-file-path}
+sky.wechat.api-v3-key=${sky.wechat.api-v3-key}
+sky.wechat.we-chat-pay-cert-file-path=${sky.wechat.we-chat-pay-cert-file-path}
+sky.wechat.notify-url=${sky.wechat.notify-url}
+sky.wechat.refund-notify-url=${sky.wechat.refund-notify-url}
\ No newline at end of file
diff --git a/sky-server/src/main/resources/mapper/OrderMapper.xml b/sky-server/src/main/resources/mapper/OrderMapper.xml
index 2a80403..7e43d99 100644
--- a/sky-server/src/main/resources/mapper/OrderMapper.xml
+++ b/sky-server/src/main/resources/mapper/OrderMapper.xml
@@ -14,4 +14,34 @@
                 #{rejectionReason}, #{cancelTime}, #{estimatedDeliveryTime}, #{deliveryStatus}, #{deliveryTime},
                 #{packAmount}, #{tablewareNumber}, #{tablewareStatus})
     </insert>
+    <update id="update" parameterType="com.sky.entity.Orders">
+        update orders
+        <set>
+            <if test="cancelReason != null and cancelReason!='' ">
+                cancel_reason=#{cancelReason},
+            </if>
+            <if test="rejectionReason != null and rejectionReason!='' ">
+                rejection_reason=#{rejectionReason},
+            </if>
+            <if test="cancelTime != null">
+                cancel_time=#{cancelTime},
+            </if>
+            <if test="payStatus != null">
+                pay_status=#{payStatus},
+            </if>
+            <if test="payMethod != null">
+                pay_method=#{payMethod},
+            </if>
+            <if test="checkoutTime != null">
+                checkout_time=#{checkoutTime},
+            </if>
+            <if test="status != null">
+                status = #{status},
+            </if>
+            <if test="deliveryTime != null">
+                delivery_time = #{deliveryTime}
+            </if>
+        </set>
+        where id = #{id}
+    </update>
 </mapper>
\ No newline at end of file