diff --git a/springboot-web-req-resp/src/main/java/com/inmind/controller/EmpController.java b/springboot-web-req-resp/src/main/java/com/inmind/controller/EmpController.java
index 918cc01..1db8873 100644
--- a/springboot-web-req-resp/src/main/java/com/inmind/controller/EmpController.java
+++ b/springboot-web-req-resp/src/main/java/com/inmind/controller/EmpController.java
@@ -2,6 +2,8 @@ package com.inmind.controller;
 
 import com.inmind.pojo.Emp;
 import com.inmind.pojo.Result;
+import com.inmind.service.EmpService;
+import com.inmind.service.impl.EmpServiceA;
 import com.inmind.utils.XmlParserUtils;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
@@ -11,39 +13,15 @@ import java.util.List;
 @RestController
 public class EmpController {
 
+    //定义业务层对象
+    private EmpService empService = new EmpServiceA();//多态
+
     //定义一个获取员工列表的接口
     @RequestMapping("/listEmp")
     public Result listEmp(){
-        //1.加载并解析emp.xml
-        //String file = "D:\\workspace_idea\\inmind_web_project260428\\springboot-web-req-resp\\src\\main\\resources\\emp.xml";
-        String file = this.getClass().getClassLoader().getResource("emp.xml").getFile();
-        List<Emp> emps = XmlParserUtils.parse(file, Emp.class);
-        //2.对数据进行处理
-        emps.stream().forEach((emp->{
-            String gender = emp.getGender();
-            //处理：1 - 男 2- 女
-            if ("1".equals(gender)) {
-                emp.setGender("男");
-            } else {
-                emp.setGender("女");
-            }
-
-            //处理职位：1：讲师  2：班主任  3：就业指导
-            String job = emp.getJob();
-            switch (job) {
-                case "1":
-                    emp.setJob("讲师");
-                    break;
-                case "2":
-                    emp.setJob("班主任");
-                    break;
-                case "3":
-                    emp.setJob("就业指导");
-                    break;
-            }
-        }));
-
-        //3.响应数据
-        return Result.success(emps);
+        //1.调用业务层，获取数据
+        List<Emp> empList = empService.listEmp();
+        //2.响应数据
+        return Result.success(empList);
     }
 }
diff --git a/springboot-web-req-resp/src/main/java/com/inmind/dao/EmpDao.java b/springboot-web-req-resp/src/main/java/com/inmind/dao/EmpDao.java
new file mode 100644
index 0000000..a77f466
--- /dev/null
+++ b/springboot-web-req-resp/src/main/java/com/inmind/dao/EmpDao.java
@@ -0,0 +1,10 @@
+package com.inmind.dao;
+
+import com.inmind.pojo.Emp;
+
+import java.util.List;
+
+public interface EmpDao {
+    //获取员工列表数据
+    List<Emp> listEmp();
+}
diff --git a/springboot-web-req-resp/src/main/java/com/inmind/dao/impl/EmpDaoA.java b/springboot-web-req-resp/src/main/java/com/inmind/dao/impl/EmpDaoA.java
new file mode 100644
index 0000000..5dec836
--- /dev/null
+++ b/springboot-web-req-resp/src/main/java/com/inmind/dao/impl/EmpDaoA.java
@@ -0,0 +1,18 @@
+package com.inmind.dao.impl;
+
+import com.inmind.dao.EmpDao;
+import com.inmind.pojo.Emp;
+import com.inmind.utils.XmlParserUtils;
+
+import java.util.List;
+
+public class EmpDaoA implements EmpDao {
+    @Override
+    public List<Emp> listEmp() {
+        //1.加载并解析emp.xml
+        //String file = "D:\\workspace_idea\\inmind_web_project260428\\springboot-web-req-resp\\src\\main\\resources\\emp.xml";
+        String file = this.getClass().getClassLoader().getResource("emp.xml").getFile();
+        List<Emp> emps = XmlParserUtils.parse(file, Emp.class);
+        return emps;
+    }
+}
diff --git a/springboot-web-req-resp/src/main/java/com/inmind/service/EmpService.java b/springboot-web-req-resp/src/main/java/com/inmind/service/EmpService.java
new file mode 100644
index 0000000..c0e7fb8
--- /dev/null
+++ b/springboot-web-req-resp/src/main/java/com/inmind/service/EmpService.java
@@ -0,0 +1,11 @@
+package com.inmind.service;
+
+import com.inmind.pojo.Emp;
+
+import java.util.List;
+
+
+public interface EmpService {
+    //处理员工列表的业务逻辑
+    List<Emp> listEmp();
+}
diff --git a/springboot-web-req-resp/src/main/java/com/inmind/service/impl/EmpServiceA.java b/springboot-web-req-resp/src/main/java/com/inmind/service/impl/EmpServiceA.java
new file mode 100644
index 0000000..931dd4b
--- /dev/null
+++ b/springboot-web-req-resp/src/main/java/com/inmind/service/impl/EmpServiceA.java
@@ -0,0 +1,46 @@
+package com.inmind.service.impl;
+
+import com.inmind.dao.EmpDao;
+import com.inmind.dao.impl.EmpDaoA;
+import com.inmind.pojo.Emp;
+import com.inmind.service.EmpService;
+
+import java.util.List;
+
+public class EmpServiceA implements EmpService {
+    //获取dao层的对象，获取数据
+    private EmpDao empDao = new EmpDaoA();
+    @Override
+    public List<Emp> listEmp() {
+        //通过dao层获取数据
+        List<Emp> empList = empDao.listEmp();
+
+        //对数据进行业务处理
+        //2.对数据进行处理
+        empList.stream().forEach((emp->{
+            String gender = emp.getGender();
+            //处理：1 - 男 2- 女
+            if ("1".equals(gender)) {
+                emp.setGender("男");
+            } else {
+                emp.setGender("女");
+            }
+
+            //处理职位：1：讲师  2：班主任  3：就业指导
+            String job = emp.getJob();
+            switch (job) {
+                case "1":
+                    emp.setJob("讲师");
+                    break;
+                case "2":
+                    emp.setJob("班主任");
+                    break;
+                case "3":
+                    emp.setJob("就业指导");
+                    break;
+            }
+        }));
+
+        return empList;
+    }
+}