Add LoginService

LoginService

@@ -0,0 +1,75 @@
+package com.power.travel.service;
+
+import com.power.travel.core.Result;
+import com.power.travel.core.ResultGenerator;
+import com.power.travel.model.User;
+import com.power.travel.util.CookieUitl;
+import com.power.travel.util.IdGenerator;
+import com.power.travel.repository.UserRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+//业务逻辑层
+@Service
+public class LoginService {
+
+    @Autowired
+    private UserRepository userRepository;
+
+    public Result login(User user, HttpServletResponse response) {
+        User userByUsername = userRepository.findUserByUsername(user.getUsername());
+        if (userByUsername == null) {
+            return ResultGenerator.genFailResult("用户名错误!");
+        } else {
+            if (user.getPassword().equals(userByUsername.getPassword())) {
+
+                Cookie cookie = new Cookie("username", user.getUsername());
+                cookie.setPath("/");
+                cookie.setMaxAge(3600);
+                response.addCookie(cookie);
+                return ResultGenerator.genSuccessResult();
+            } else {
+                return ResultGenerator.genFailResult("密码错误!");
+            }
+        }
+
+    }
+
+    public void logout(HttpServletRequest request, HttpServletResponse response) {
+        Cookie cookie = CookieUitl.get(request, "username");
+        if(cookie != null){
+            CookieUitl.set(response,"username",null,0);
+        }
+
+
+//        String value = null;
+//
+//        Cookie[] cookies = request.getCookies();
+//        if (cookies == null){
+//            System.out.println("error");
+//        }else{
+//            for (int i = 0;i<cookies.length;i++){
+//                if(cookies[i].getName().equals("root")){
+//                    value = cookies[i].getValue();
+//                }
+//            }
+//        }
+//
+//        Cookie cookie = new Cookie("username",value);
+//        cookie.setMaxAge(-1);
+    }
+
+    public Result register(User user) {
+        User userByUsername = userRepository.findUserByUsername(user.getUsername());
+        if(userByUsername != null){
+            return ResultGenerator.genFailResult("用户名重复!");
+        }
+        //Todo 这里有一个事务操作
+        user.setId(IdGenerator.id());
+        userRepository.save(user);
+        return ResultGenerator.genSuccessResult();
+    }
+}