diff --git a/build.gradle b/build.gradle
index d2d9c24..6e26871 100644
--- a/build.gradle
+++ b/build.gradle
@@ -99,6 +99,7 @@ repositories {
 }
 
 dependencies {
+    compile project(':services')
     compile group: 'org.jacoco', name: 'org.jacoco.core', version: '0.8.3'
     compile 'org.codehaus.groovy:groovy-all:2.3.11'
     compile 'org.apache.commons:commons-lang3:3.5'
diff --git a/src/main/java/edu/msudenver/tsp/website/Application.java b/src/main/java/edu/msudenver/tsp/website/Application.java
index 54da024..1b826ed 100644
--- a/src/main/java/edu/msudenver/tsp/website/Application.java
+++ b/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);
     }
+
+
 }
diff --git a/src/main/java/edu/msudenver/tsp/website/controller/LogInController.java b/src/main/java/edu/msudenver/tsp/website/controller/LogInController.java
new file mode 100644
index 0000000..556c8d5
--- /dev/null
+++ b/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";
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index f3ce324..09b74b5 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -1,2 +1,6 @@
 spring.mvc.view.prefix:/WEB-INF/jsp/
-spring.mvc.view.suffix:.jsp
\ No newline at end of file
+spring.mvc.view.suffix:.jsp
+
+persistence.api.connection.timeout.milliseconds=5000
+persistence.api.socket.timeout.milliseconds=10000
+persistence.api.base.url=http://localhost:8090/
\ No newline at end of file
diff --git a/src/main/webapp/WEB-INF/jsp/LogIn.jsp b/src/main/webapp/WEB-INF/jsp/LogIn.jsp
new file mode 100644
index 0000000..2670147
--- /dev/null
+++ b/src/main/webapp/WEB-INF/jsp/LogIn.jsp
@@ -0,0 +1,35 @@
+<%--
+  Created by IntelliJ IDEA.
+  User: tianliu
+  Date: 2019-04-24
+  Time: 16:25
+  To change this template use File | Settings | File Templates.
+--%>
+<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
+<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
+
+<c:set var="contextPath" value="${pageContext.request.contextPath}"/>
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+    <title>Log in with your account</title>
+</head>
+<body>
+<div class="container">
+    <form method="post" action="">
+        <h2 class="form-heading">Log in</h2>
+        <div>
+            <input name="username" type="text" class="form-control" placeholder="Username"/><br>
+            <input name="password" type="password" class="form-control" placeholder="Password"/><br>
+            <span style="Color: red">${error}</span><br>
+            <input type="hidden" name="${parameterName}" value="${token}"/>
+            <button class="btn btn-lg btn-primary btn-block" type="submit">Log In</button>
+            <h4 class="text-center"><a href="/registration">Create an account</a></h4>
+        </div>
+    </form>
+</div>
+</body>
+</html>
\ No newline at end of file
diff --git a/src/main/webapp/WEB-INF/jsp/index.jsp b/src/main/webapp/WEB-INF/jsp/index.jsp
index c87e887..7ee4c24 100644
--- a/src/main/webapp/WEB-INF/jsp/index.jsp
+++ b/src/main/webapp/WEB-INF/jsp/index.jsp
@@ -32,6 +32,17 @@ Click on this <strong><a href="/theorem/">link</a></strong> to visit theorem ent
 <h4 class="text-center"><a href="/login">Sign In</a></h4>
 </div>
 
+
+<body>
+<div>
+  <div>
+    <h1>Theorem Prover</h1>
+    <h2>Hello! Welcome to Pandamonium™ Theorem Prover!!</h2>
+
+    Click on this <strong><a href="/theorem/">link</a></strong> to visit theorem entering page.
+    <h4 class="text-center"><a href="/login">Sign In</a></h4>
+  </div>
+
 </div>
 </body>
 
diff --git a/src/test/java/edu/msudenver/tsp/website/controller/LogInControllerTest.java b/src/test/java/edu/msudenver/tsp/website/controller/LogInControllerTest.java
new file mode 100644
index 0000000..6012386
--- /dev/null
+++ b/src/test/java/edu/msudenver/tsp/website/controller/LogInControllerTest.java
@@ -0,0 +1,24 @@
+package edu.msudenver.tsp.website.controller;
+
+import edu.msudenver.tsp.services.UserService;
+import org.junit.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.servlet.ModelAndView;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+
+
+public class LogInControllerTest {
+    @Autowired UserService userService;
+    private final LogInController logInController = new LogInController(userService);
+
+    @Test
+    public void testEnterTheoremPage() {
+        ModelAndView modelAndView = logInController.enterLogInPage();
+        assertNotNull(modelAndView);
+        assertEquals("LogIn", modelAndView.getViewName());
+
+    }
+}