diff --git a/src/main/java/com/book/demo/controller/BookController.java b/src/main/java/com/book/demo/controller/BookController.java
index 32ae777..097d880 100644
--- a/src/main/java/com/book/demo/controller/BookController.java
+++ b/src/main/java/com/book/demo/controller/BookController.java
@@ -15,7 +15,7 @@ public class BookController {
     @Autowired
     Result res;
 
-
+    //初始化获取图书信息
     @ResponseBody
     @GetMapping("/getallbooks")
     public Result getAllBooks(){
@@ -28,6 +28,7 @@ public class BookController {
         else{
             res.setCode(0);
             res.setMsg("获取成功");
+            res.data.clear();
             for (Book book : books) {
                 res.data.add(book);
             }
@@ -35,6 +36,7 @@ public class BookController {
         return res;
     }
 
+    //通过类别实现图书查找
     @ResponseBody
     @GetMapping("/getbooks")
     public Result getAllBooksByKind(@RequestParam("kind")String kind){
@@ -47,6 +49,7 @@ public class BookController {
         else{
             res.setCode(0);
             res.setMsg("获取成功");
+            res.data.clear();
             for (Book book : books) {
                 res.data.add(book);
             }
@@ -54,6 +57,7 @@ public class BookController {
         return res;
     }
 
+    //通过书名查找
     @ResponseBody
     @GetMapping("/searchbooks")
     public Result getAllBooksBySearch(@RequestParam("bookname")String bookname){
@@ -66,13 +70,14 @@ public class BookController {
         else{
             res.setCode(0);
             res.setMsg("获取成功");
+            res.data.clear();
             for (Book book : books) {
                 res.data.add(book);
             }
         }
         return res;
     }
-/*
+
     //添加型图书 图书表结构更改
     @ResponseBody
     @PostMapping("/addbook")
@@ -106,5 +111,5 @@ public class BookController {
         res.data=null;
         return res;
     }
-*/
+
 }
diff --git a/src/main/java/com/book/demo/controller/CartController.java b/src/main/java/com/book/demo/controller/CartController.java
index 680ee1e..2aa1ac0 100644
--- a/src/main/java/com/book/demo/controller/CartController.java
+++ b/src/main/java/com/book/demo/controller/CartController.java
@@ -15,13 +15,13 @@ public class CartController {
 
     @Autowired
     Result res;
-/*
-    //添加商品进购物车 id为isbn
+
+    //添加商品进购物车 （用户名，书名为联合主键）>>连接插入，价格为书的单价，数量设为1
     @ResponseBody
     @GetMapping("/addintocart")
-    public Result AddBookIn(@RequestParam("username")String username,@RequestParam("id") int id){
+    public Result AddBookIn(@RequestParam("username")String username,@RequestParam("bookname") String bookname){
         //把数量默认都设为1
-        int state=cartMapper.insertItem(username,id);
+        int state=cartMapper.insertItem(username,bookname);
         if(state>0){
             res.setCode(0);
             res.setMsg("添加成功");
@@ -51,5 +51,21 @@ public class CartController {
         res.data=null;
         return res;
     }
-*/
+
+    //更新购物车图书数量
+    @ResponseBody
+    @GetMapping("/updateItem")
+    public Result updateItem(@RequestParam("username")String username,@RequestParam("bookname")String bookname,@RequestParam("count")int count){
+        int state=cartMapper.updateCount(username,bookname,count);
+        if(state>0){
+            res.setCode(0);
+            res.setMsg("数量更新成功");
+        }
+        else{
+            res.setCode(-1);
+            res.setMsg("数量更新失败");
+        }
+        res.data=null;
+        return res;
+    }
 }
diff --git a/src/main/java/com/book/demo/controller/UserController.java b/src/main/java/com/book/demo/controller/UserController.java
index 2c87312..41a85bb 100644
--- a/src/main/java/com/book/demo/controller/UserController.java
+++ b/src/main/java/com/book/demo/controller/UserController.java
@@ -84,7 +84,7 @@ public class UserController {
         }
         return res;
     }
-/*
+
     //用户管理>删除用户   注销账号
     @ResponseBody
     @GetMapping("/delete")
@@ -107,6 +107,8 @@ public class UserController {
         return res;
     }
 
+
+    //用户管理》请求所有用户数据 》》》要求：只查询用户类别为0的（即用户）
     @ResponseBody
     @GetMapping("/getalluser")
     public Result getAllUser() {
@@ -125,5 +127,5 @@ public class UserController {
         return res;
     }
 
-*/
+
 }
diff --git a/src/main/java/com/book/demo/mapper/BookMapper.java b/src/main/java/com/book/demo/mapper/BookMapper.java
index 5dfccd6..6c128c1 100644
--- a/src/main/java/com/book/demo/mapper/BookMapper.java
+++ b/src/main/java/com/book/demo/mapper/BookMapper.java
@@ -15,15 +15,15 @@ import java.util.List;
 public interface BookMapper {
 
 
-    @Select("select * from book_list where kind=#{kind}")
+    @Select("select * from book where kind=#{kind}")
     Book[] getBooksByKind(String kind);
 
-    @Select("select * from book_list")
+    @Select("select * from book")
     Book[] getAll();
-    @Select("select * from book_list where bookname=#{bookname}")
+    @Select("select * from book where bookname=#{bookname}")
     Book[] searchBooks(String bookname);
-    @Delete("delete from book_list where bookname=#{bookname}")
+    @Delete("delete from book where bookname=#{bookname}")
     int deleteByBookName(String bookname);
-    @Insert("insert into book_list values (#{bookname},#{price},#{kind})")
+    @Insert("insert into book values (#{bookname},#{price},#{kind})")
     int Insert(Book book);
 }
diff --git a/src/main/java/com/book/demo/mapper/UserMapper.java b/src/main/java/com/book/demo/mapper/UserMapper.java
index 7fc049c..23569bd 100644
--- a/src/main/java/com/book/demo/mapper/UserMapper.java
+++ b/src/main/java/com/book/demo/mapper/UserMapper.java
@@ -17,8 +17,8 @@ public interface UserMapper {
 
     @Insert("insert into user values(#{username},#{password},#{kind})")
     int InsertUser(User user);
-    @Delete("delete from user_list where username=#{username}")
+    @Delete("delete from user where username=#{username}")
     int deleteUserByName(String username);
-    @Select("select * from user_list")
+    @Select("select * from user")
     User[] queryAllUser();
 }