Add loginpage controller, login jsp and logincontroller unit test.

src/main/java/edu/msudenver/tsp/website/Application.java

@@ -2,11 +2,17 @@ package edu.msudenver.tsp.website;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.ComponentScan;
 
 @SpringBootApplication
+@ComponentScan("edu.msudenver.tsp")
+
 public class Application {
 
-    public static void main(final String[] args) {
+
+    public static void main(String[] args) {
         SpringApplication.run(Application.class, args);
     }
+
+
 }

src/main/java/edu/msudenver/tsp/website/controller/LogInController.java

@@ -0,0 +1,52 @@
+package edu.msudenver.tsp.website.controller;
+
+
+import edu.msudenver.tsp.services.UserService;
+import edu.msudenver.tsp.services.dto.Account;
+import lombok.AllArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.servlet.ModelAndView;
+
+import java.util.Optional;
+
+@Slf4j
+@Controller
+@AllArgsConstructor
+@RequestMapping("/login")
+public class LogInController {
+    @Autowired
+    private final UserService userService;
+
+    @GetMapping({"/", ""})
+    public ModelAndView enterLogInPage() {
+        LOG.info("Received request to display the log in page: returning model with name 'LogIn'");
+        return new ModelAndView("LogIn");
+    }
+
+    @PostMapping({"/", ""})
+    public String singIn(Model model, @RequestParam("username") String username, @RequestParam("password") String password) {
+        Optional<Account> findUserByUsername = userService.findAccountByUsername(username);
+        if(findUserByUsername.isPresent()){
+            if (password.equals(findUserByUsername.get().getPassword())) {
+                model.addAttribute("username", username);
+                model.addAttribute("password", password);
+                return "index";
+            }
+            else {
+                model.addAttribute("error", "your username and password is invalid");
+                return "LogIn";
+            }
+        }
+        else {
+            model.addAttribute("error", "username and password can not be empty");
+            return "LogIn";
+        }
+    }
+}