暂时告一段落

04. 后端Web基础(基础知识)/springboot-web-01/src/main/java/com/itheima/springbootweb01/controller/UserController.java

@@ -2,6 +2,8 @@ package com.itheima.springbootweb01.controller;
 
 import cn.hutool.core.io.IoUtil;
 import com.itheima.springbootweb01.pojo.User;
+import com.itheima.springbootweb01.service.UserService;
+import com.itheima.springbootweb01.service.lmpl.UserServiceImpl;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
@@ -22,28 +24,39 @@ import static java.lang.System.in;
 //用户信息控制器
 @RestController //作用：将controller返回值直接作为响应数据返回给浏览器@ResponseBody
 public class UserController {
-    @RequestMapping("/hello");
+    /**
+     * 接受请求 相应数据
+     */
 
+    private UserService userService = new UserServiceImpl();
 
+    //    @RequestMapping("/list")
+//    public List<User> list() throws  Exception{
+//        //1.加载并读取user.txt文件，获取用户数据
+//        // 绝对路径
+//        //InputStream in = new FileInputStream(new File("C:\\Users\\syx\\Desktop\\JavaWeb\\04. 后端Web基础(基础知识)\\springboot-web-01\\src\\main\\resources\\user.txt"));
+//        //相对路径
+//        InputStream in = this.getClass().getClassLoader().getResourceAsStream("user.txt");
+//        ArrayList<String> lines = IoUtil.readLines(in, StandardCharsets.UTF_8, new ArrayList<>());
+//        //2.将用户数据封装成User对象 ->list集合
+//        List<User> UserList= lines.stream().map(line -> {
+//            String[] split = line.split(",");
+//            Integer id = Integer.parseInt(split[0]);
+//            String username = split[1];
+//            String password = split[2];
+//            String name = split[3];
+//            Integer age = Integer.parseInt(split[4]);
+//            LocalDateTime updateTime = LocalDateTime.parse(split[5], DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
+//            return new User(id, username, password, name, age, updateTime);
+//        }).toList();
+//        //3.返回数据（json）
+//        return UserList;
+//    }
     @RequestMapping("/list")
     public List<User> list() throws  Exception{
-        //1.加载并读取user.txt文件，获取用户数据
+        //1.调用service层数据
-        // 绝对路径
+        List<User> UserList= userService.findAll();
-        //InputStream in = new FileInputStream(new File("C:\\Users\\syx\\Desktop\\JavaWeb\\04. 后端Web基础(基础知识)\\springboot-web-01\\src\\main\\resources\\user.txt"));
+
-        //相对路径
-        InputStream in = this.getClass().getClassLoader().getResourceAsStream("user.txt");
-        ArrayList<String> lines = IoUtil.readLines(in, StandardCharsets.UTF_8, new ArrayList<>());
-        //2.将用户数据封装成User对象 ->list集合
-        List<User> UserList= lines.stream().map(line -> {
-            String[] split = line.split(",");
-            Integer id = Integer.parseInt(split[0]);
-            String username = split[1];
-            String password = split[2];
-            String name = split[3];
-            Integer age = Integer.parseInt(split[4]);
-            LocalDateTime updateTime = LocalDateTime.parse(split[5], DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
-            return new User(id, username, password, name, age, updateTime);
-        }).toList();
         //3.返回数据（json）
         return UserList;
     }

04. 后端Web基础(基础知识)/springboot-web-01/src/main/java/com/itheima/springbootweb01/dao/UserDao.java

@@ -0,0 +1,8 @@
+package com.itheima.springbootweb01.dao;
+
+import java.util.List;
+
+public interface UserDao {
+//    加载用户数据
+    public List<String> findAll();
+}

04. 后端Web基础(基础知识)/springboot-web-01/src/main/java/com/itheima/springbootweb01/dao/impl/UserDaoImpl.java

@@ -0,0 +1,26 @@
+package com.itheima.springbootweb01.dao.impl;
+
+import cn.hutool.core.io.IoUtil;
+import com.itheima.springbootweb01.dao.UserDao;
+
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
+
+public class UserDaoImpl implements UserDao {
+    /**
+     * 数据层
+     * @return 数据访问层数据
+     */
+    @Override
+    public List<String> findAll() {
+        //1.加载并读取user.txt文件，获取用户数据
+        // 绝对路径
+        //InputStream in = new FileInputStream(new File("C:\\Users\\syx\\Desktop\\JavaWeb\\04. 后端Web基础(基础知识)\\springboot-web-01\\src\\main\\resources\\user.txt"));
+        //相对路径
+        InputStream in = this.getClass().getClassLoader().getResourceAsStream("user.txt");
+        ArrayList<String> lines = IoUtil.readLines(in, StandardCharsets.UTF_8, new ArrayList<>());
+        return lines;
+    }
+}

04. 后端Web基础(基础知识)/springboot-web-01/src/main/java/com/itheima/springbootweb01/service/UserService.java

@@ -0,0 +1,9 @@
+package com.itheima.springbootweb01.service;
+
+import com.itheima.springbootweb01.pojo.User;
+
+import java.util.List;
+
+public interface UserService {
+    public List<User> findAll();
+}

04. 后端Web基础(基础知识)/springboot-web-01/src/main/java/com/itheima/springbootweb01/service/lmpl/UserServiceImpl.java

@@ -0,0 +1,35 @@
+package com.itheima.springbootweb01.service.lmpl;
+
+import com.itheima.springbootweb01.dao.UserDao;
+import com.itheima.springbootweb01.dao.impl.UserDaoImpl;
+import com.itheima.springbootweb01.pojo.User;
+import com.itheima.springbootweb01.service.UserService;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.List;
+
+public class UserServiceImpl implements UserService {
+    /**
+     * 业务逻辑层
+     */
+    private UserDao userDao = new UserDaoImpl();
+    @Override
+    public List<User> findAll() {
+        //1.加载Dao层数据
+        List<String> lines = userDao.findAll();
+
+        //2.将用户数据封装成User对象 ->list集合
+        List<User> userList= lines.stream().map(line -> {
+            String[] split = line.split(",");
+            Integer id = Integer.parseInt(split[0]);
+            String username = split[1];
+            String password = split[2];
+            String name = split[3];
+            Integer age = Integer.parseInt(split[4]);
+            LocalDateTime updateTime = LocalDateTime.parse(split[5], DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
+            return new User(id, username, password, name, age, updateTime);
+        }).toList();
+        return userList;
+    }
+}