diff --git a/src/main/java/com/muyu/system/controller/BuyInterface.java b/src/main/java/com/muyu/system/controller/BuyInterface.java
index f056379..ff9f8e5 100644
--- a/src/main/java/com/muyu/system/controller/BuyInterface.java
+++ b/src/main/java/com/muyu/system/controller/BuyInterface.java
@@ -1,6 +1,12 @@
 package com.muyu.system.controller;
 
+import com.muyu.common.core.domain.Result;
+import com.muyu.system.domain.Connector;
+import com.muyu.system.service.BuyService;
 import io.swagger.v3.oas.annotations.tags.Tag;
+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;
 
@@ -15,4 +21,11 @@ import org.springframework.web.bind.annotation.RestController;
 @RequestMapping("/buy")
 @Tag(name = "BuyMapper", description = "购买接口")
 public class BuyInterface {
+    @Autowired
+    private BuyService buyService;
+
+    @PostMapping("/doBuyInterface")
+    public Result doBuyInterface(@RequestBody Connector connector){
+        return buyService.doBuyInterface(connector);
+    }
 }
diff --git a/src/main/java/com/muyu/system/mapper/BuyMapper.java b/src/main/java/com/muyu/system/mapper/BuyMapper.java
index 1035cc5..2ad0812 100644
--- a/src/main/java/com/muyu/system/mapper/BuyMapper.java
+++ b/src/main/java/com/muyu/system/mapper/BuyMapper.java
@@ -12,4 +12,5 @@ import com.muyu.system.domain.Connector;
  * 购买接口
  */
 public interface BuyMapper extends BaseMapper<Connector> {
+    Integer doBuyInterface(Connector connector);
 }
diff --git a/src/main/java/com/muyu/system/service/BuyService.java b/src/main/java/com/muyu/system/service/BuyService.java
index e4943cb..623aa76 100644
--- a/src/main/java/com/muyu/system/service/BuyService.java
+++ b/src/main/java/com/muyu/system/service/BuyService.java
@@ -1,6 +1,7 @@
 package com.muyu.system.service;
 
 import com.baomidou.mybatisplus.extension.service.IService;
+import com.muyu.common.core.domain.Result;
 import com.muyu.system.domain.Connector;
 
 /**
@@ -12,4 +13,5 @@ import com.muyu.system.domain.Connector;
  * 购买接口
  */
 public interface BuyService extends IService<Connector> {
+    Result doBuyInterface(Connector connector);
 }
diff --git a/src/main/java/com/muyu/system/service/impl/BuyServiceImpl.java b/src/main/java/com/muyu/system/service/impl/BuyServiceImpl.java
index 9a1a8e5..0364938 100644
--- a/src/main/java/com/muyu/system/service/impl/BuyServiceImpl.java
+++ b/src/main/java/com/muyu/system/service/impl/BuyServiceImpl.java
@@ -1,11 +1,15 @@
 package com.muyu.system.service.impl;
 
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.muyu.common.core.domain.Result;
 import com.muyu.system.domain.Connector;
 import com.muyu.system.mapper.BuyMapper;
 import com.muyu.system.service.BuyService;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
+import javax.annotation.Resource;
+
 /**
  * @Author：chaiyapeng
  * @Package：com.muyu.system.service.impl
@@ -16,4 +20,14 @@ import org.springframework.stereotype.Service;
  */
 @Service
 public class BuyServiceImpl extends ServiceImpl<BuyMapper, Connector> implements BuyService {
+    @Resource
+    private BuyMapper buyMapper;
+    @Override
+    public Result doBuyInterface(Connector connector) {
+        Integer i = buyMapper.doBuyInterface(connector);
+        if (i>0){
+            return Result.success(i,"购买成功");
+        }
+        return Result.error("购买失败");
+    }
 }
diff --git a/src/main/resources/mapper/system/BuyMapper.xml b/src/main/resources/mapper/system/BuyMapper.xml
new file mode 100644
index 0000000..1faea4b
--- /dev/null
+++ b/src/main/resources/mapper/system/BuyMapper.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper
+        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.muyu.system.mapper.BuyMapper">
+
+
+    <update id="doBuyInterface">
+        update connector set connector_frequency=connector_frequency+#{connectorFrequency},connector_residue_degree=connector_residue_degree+#{connectorFrequency} where connector_id=#{connectorId}
+    </update>
+</mapper>