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 1e68673..6cee1a7 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
@@ -5,6 +5,7 @@ import com.inmind.pojo.Result;
 import com.inmind.service.EmpService;
 import com.inmind.service.impl.EmpServiceImplA;
 import com.inmind.utils.XmlParserUtils;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
@@ -13,7 +14,8 @@ import java.util.List;
 @RestController
 public class EmpController {
     //设置一个员工业务对象
-    private EmpService empService = new EmpServiceImplA();
+    @Autowired//运行时，IOC容器会提供该类型的bean对象，并赋值给该变量----依赖注入
+    private EmpService empService ;
 
     @RequestMapping("/listEmp")
     public Result listEmp(){
diff --git a/springboot-web-req-resp/src/main/java/com/inmind/dao/impl/EmpDaoImplA.java b/springboot-web-req-resp/src/main/java/com/inmind/dao/impl/EmpDaoImplA.java
index f323783..f9d9f8e 100644
--- a/springboot-web-req-resp/src/main/java/com/inmind/dao/impl/EmpDaoImplA.java
+++ b/springboot-web-req-resp/src/main/java/com/inmind/dao/impl/EmpDaoImplA.java
@@ -3,9 +3,11 @@ package com.inmind.dao.impl;
 import com.inmind.dao.EmpDao;
 import com.inmind.pojo.Emp;
 import com.inmind.utils.XmlParserUtils;
+import org.springframework.stereotype.Component;
 
 import java.util.List;
 
+@Component //将当前类交给IOC容器管理，让它称为IOC容器中的bean对象---IOC控制反转
 public class EmpDaoImplA implements EmpDao {
     @Override
     public List<Emp> listEmp() {
diff --git a/springboot-web-req-resp/src/main/java/com/inmind/service/impl/EmpServiceImplA.java b/springboot-web-req-resp/src/main/java/com/inmind/service/impl/EmpServiceImplA.java
index 9d05496..1101634 100644
--- a/springboot-web-req-resp/src/main/java/com/inmind/service/impl/EmpServiceImplA.java
+++ b/springboot-web-req-resp/src/main/java/com/inmind/service/impl/EmpServiceImplA.java
@@ -4,12 +4,16 @@ import com.inmind.dao.EmpDao;
 import com.inmind.dao.impl.EmpDaoImplA;
 import com.inmind.pojo.Emp;
 import com.inmind.service.EmpService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
 
 import java.util.List;
 
+@Component //将当前类交给IOC容器管理，让它称为IOC容器中的bean对象---IOC控制反转
 public class EmpServiceImplA implements EmpService {
     //设置一个dao的成员变量
-    private EmpDao empDao = new EmpDaoImplA();
+    @Autowired//运行时，IOC容器会提供该类型的bean对象，并赋值给该变量----依赖注入
+    private EmpDao empDao ;
 
     @Override
     public List<Emp> listEmp() {