Error resolving template name in Spring Boot and Thymeleaf - java

I get the following error when I navigate to http://localhost:8080.
Error in browser:
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Sat Nov 03 12:08:46 CET 2018
There was an unexpected error (type=Internal Server Error, status=500).
Error resolving template "home", template might not exist or might not be accessible by any of the configured Template Resolvers
I have looked at most of the answers in this forum but none solves my problem.
My configurations are:
#Configuration
#ComponentScan(basePackages = {"com.example"})
public class WebMvcConfig extends WebMvcConfigurerAdapter{
private static final String[] CLASSPATH_RESOURCE_LOCATIONS = {
"classpath:/resources/",
"classpath:/META-INF/resources"
};
#Override
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/home").setViewName("home");
registry.addViewController("/").setViewName("home");
registry.addViewController("/hello").setViewName("hello");
registry.addViewController("/login").setViewName("login");
}
#Override
public void addResourceHandlers(final ResourceHandlerRegistry registry) {
registry.addResourceHandler("/resources/**")
.addResourceLocations("/resources")
.setCachePeriod(0); //Set to 0 in order to send cache headers that prevent caching
if (!registry.hasMappingForPattern("/**")) {
registry.addResourceHandler("/**").addResourceLocations(
CLASSPATH_RESOURCE_LOCATIONS);
}
}
#Bean
public ServletContextTemplateResolver templateResolver() {
ServletContextTemplateResolver resolver = new ServletContextTemplateResolver();
resolver.setPrefix("classpath:/templates/");
resolver.setSuffix(".html");
resolver.setTemplateMode("HTML5");
resolver.setCacheable(false);
resolver.setOrder(1);
return resolver;
}
#Bean
public SpringTemplateEngine templateEngine(final ServletContextTemplateResolver templateResolver) {
SpringTemplateEngine engine = new SpringTemplateEngine();
engine.setTemplateResolver(templateResolver);
return engine;
}
#Bean
public ThymeleafViewResolver thymeleafViewResolver(final SpringTemplateEngine templateEngine) {
ThymeleafViewResolver resolver = new ThymeleafViewResolver();
resolver.setTemplateEngine(templateEngine);
return resolver;
}
}
POM.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>example</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>example</name>
<description>example Application</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- Spring Security -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<!-- Thymeleaf -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<!-- Logging -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j</artifactId>
<version>2.11.0</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-jsr310</artifactId>
</dependency>
<!-- Third Party Libraries -->
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Templates
Templates are in:
-src/main/resources
-- templates
hello.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"
xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">
<head>
<title>Hello World!</title>
</head>
<body>
<h1 th:inline="text">Hello [[${#httpServletRequest.remoteUser}]]</h1>
<form th:action="#{/logout}" method="post">
<input type="submit" value="Sign Out"/>
</form>
</body>
</html>
home.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org" xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">
<head>
<title>Spring Security Example</title>
</head>
<body>
<h1>Welcome!</h1>
<p>Click <a th:href="#{/hello}">here</a> to see a greeting.</p>
</body>
</html>
login.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"
xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">
<head>
<title>Spring Security Example </title>
</head>
<body>
<div th:if="${param.error}">
Invalid username and password.
</div>
<div th:if="${param.logout}">
You have been logged out.
</div>
<form th:action="#{/login}" method="post">
<div><label> User Name : <input type="text" name="username"/> </label></div>
<div><label> Password: <input type="password" name="password"/> </label></div>
<div><input type="submit" value="Sign In"/></div>
</form>
</body>
</html>
What am I doing wrong?


Can you replace your ServletContextTemplateResolver with a ClassLoaderTemplateResolver.
#Bean
public TemplateResolver templateResolver() {
TemplateResolver templateResolver = new ClassLoaderTemplateResolver();
templateResolver.setPrefix("templates/");
templateResolver.setSuffix(".html");
templateResolver.setTemplateMode("HTML5");
templateResolver.setCacheable(false);
templateResolver.setOrder(1);
return templateResolver;
}

Related

Thymeleaf problem with Java, Spring and Maven Project. It doesn't display in the browser.Doesn't connect with the controller.Cannot resolve customer

Problem in Controller
Thymeleaf plugin
Plugins Spring
this is image of an HTML document in IntelliJ IDEA
I receive a "Cannot resolve 'customer' " message in html document when I want to add some
th:text = "customers.get(0).getFirstName()"
or when I try any th tag. They don't work.
#RestController
public class HomeController {
public List<Customer> customers;
public HomeController(){
this.customers = new ArrayList<>();
}
#Autowired
private CustomerRepository customerRepository;
#PostMapping("/add")
public String addCustomer(#RequestParam String first, #RequestParam String last) {
Customer customer = new Customer();
customer.setFirstName(first);
customer.setLastName(last);
customerRepository.save(customer);
return "redirect:/";
}
#GetMapping("/list")
public Iterable<Customer> getCustomer() {
return customerRepository.findAll();
}
#GetMapping("/find/{id}")
public Customer findCustomerById(#PathVariable Integer id) {
return customerRepository.findCustomerById(id);
}
#RequestMapping("/home")
public ModelAndView home(ModelAndView modelAndView,Customer customer){
customer.setFirstName("John");
customer.setLastName("Smith");
customer.setId(37);
customers.add(customer);
modelAndView.setViewName("home");
modelAndView.addObject("customers",customers);
return modelAndView;
}
}
This is the HTML document that I was talking about. I will also show you my pom.xml file because I don't know where the problem might be.
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:th="http://thymeleaf.org">
<head lang="en">
<meta charset="UTF-8">
<title>home</title>
<link rel="stylesheet" href="homeStyle.css">
</head>
<body>
<header>
<nav>
<ul>
<li>Home</li>
<li>List</li>
<li>Contacts</li>
</ul>
</nav>
</header>
<main>
<tr th:each="customer : ${customers}">
<td th:text="${customer.getFirstName()}"></td>
<td th:text="${customer.getLastName()}"></td>
</tr>
</main>
<footer>
</footer>
</body>
</html>
This is my pom.xml with all dependencies needed I believe.
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>spring-boot-tutorial</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-boot-tutorial</name>
<description>spring-boot-tutorial</description>
<properties>
<java.version>18</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>org.thymeleaf</groupId>
<artifactId>thymeleaf</artifactId>
<version>3.0.15.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

Springboot not returning index.jsp

When I am running my Sprinboot Application, it is just returning index as string. It is not giving me index.jsp page. Also I have tried to add some jstl compiler in it still it is not working
The code of Main file:
package com.hello.first;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class FirstApplication {
public static void main(String[] args) {
SpringApplication.run(FirstApplication.class, args);
}
}
The Controller file:
package com.hello.first;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
#RestController
public class firstpage {
#RequestMapping("/")
public String hello(){
return "index";
}
}
Application.properties:
server.port=8000
spring.mvc.view.prefix=/WEB-INF/
spring.mvc.view.suffix= .jsp
POM.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.hello</groupId>
<artifactId>first</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>first</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<!-- JSTL for JSP -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<!-- Need this to compile JSP -->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.eclipse.jdt.core.compiler</groupId>
<artifactId>ecj</artifactId>
<version>4.6.1</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
index.jsp:
<%# taglib prefix = "c" uri = "http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
Hello this is my page!!
</body>
</html>
Output I am getting:
index

I was able to solve the problem by replacing the return "index" with return "index.html" and replacing the files from templates folder to static folder as I was simply trying to return simple HTML file.
Also the above code is working fine if I add thymeleaf dependancy

use
return "index.jsp" instead
return "index"

Why Spring Custom Login Form not found but other pages works fine?

I'm trying out add Custom Login Page in Sprint Security but it ends up with page not found error 404. I've already have implemented login mechanism and it works for default Spring Security login form. Now I don't have any idea what to do to make Custom Login Page work.
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.krzychu</groupId>
<artifactId>hairdresser</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>hairdresser</name>
<description>Haidresser CRUD</description>
<properties>
<java.version>12</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
SecurityConfig.java
package com.krzychu.hairdresser.config;
import com.krzychu.hairdresser.services.MyUserDetailsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
#EnableWebMvc
#Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {
#Autowired
private MyUserDetailsService userDetailsService;
#Autowired
public BCryptPasswordEncoder bCryptPasswordEncoder() {
return new BCryptPasswordEncoder();
}
#Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth
.userDetailsService(userDetailsService)
.passwordEncoder(bCryptPasswordEncoder());
}
#Override
protected void configure(HttpSecurity http) throws Exception {
http
.authorizeRequests()
.antMatchers("/resources/**").permitAll()
.anyRequest().permitAll()
.and()
.formLogin()
.loginPage("/login")
.permitAll()
.and()
.logout()
.permitAll();
}
}
login.html
<html xmlns:th="https://www.thymeleaf.org">
<head th:include="layout :: head(title=~{::title},links=~{})">
<title>Please Login</title>
</head>
<body th:include="layout :: body" th:with="content=~{::content}">
<div th:fragment="content">
<form name="f" th:action="#{/login}" method="post">
<fieldset>
<legend>Please Login</legend>
<div th:if="${param.error}" class="alert alert-error">
Invalid username and password.
</div>
<div th:if="${param.logout}" class="alert alert-success">
You have been logged out.
</div>
<label for="username">Username</label>
<input type="text" id="username" name="username"/>
<label for="password">Password</label>
<input type="password" id="password" name="password"/>
<div class="form-actions">
<button type="submit" class="btn">Log in</button>
</div>
</fieldset>
</form>
</div>
</body>
</html>
application.properties
spring.datasource.driver-class-name=org.postgresql.Driver
spring.datasource.url=${DB_URL}
spring.datasource.username=
spring.datasource.password=
spring.main.allow-bean-definition-overriding=true
spring.thymeleaf.prefix=classpath:/templates/
spring.thymeleaf.suffix=.html

You can replace EnableWebMvc with EnableWebSecurity as following
#EnableWebSecurity
#Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {
// ...
}
Edit
Add a Controller for login as following
#Controller
public class LoginController {
#GetMapping("/login")
public String index(HttpServletRequest request, Model model) {
// ...
return "login";
}
}
This example assumes you have login.html file in your templates folder
Edit 2
If not done yet, you must add a ViewResolver as a #Bean in your Config class
#Bean
public TemplateEngine templateEngine(ITemplateResolver templateResolver, SpringSecurityDialect sec) {
TemplateEngine templateEngine = new TemplateEngine();
templateEngine.setTemplateResolver(templateResolver);
templateEngine.addDialect(sec);
return templateEngine;
}
Add this dependency
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>

why do not give a chance to remove the tags that have th:include="layout , just to test that the wiring of elements were done correctly, and the only part missing is the definition of the layout??

There was an unexpected error (type=Not Found, status=404). No message available even if have added componentScan request is not directed

There was an unexpected error (type=Not Found, status=404). No message available
I couldn't find what is wrong with this code.
URL:localhost:8080/home
pom.xml My pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>CrudOperations</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>CrudOperations</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<!-- JSTL for JSP -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<!-- Need this to compile JSP -->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<!-- Need this to compile JSP,
tomcat-embed-jasper version is not working, no idea why -->
<dependency>
<groupId>org.eclipse.jdt.core.compiler</groupId>
<artifactId>ecj</artifactId>
<version>4.6.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<scope>provided</scope>
<!-- version>4.1.4.Final</version -->
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<!-- version>5.2.3.Final</version-->
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Controller My controller inside the com.example.CrudOperations.Controllers and also included in #ComponentScan in main application
package com.example.CrudOperations.Controllers;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
#Controller
public class homeController {
#RequestMapping("/home")
public ModelAndView register() {
ModelAndView mv = new ModelAndView("register");
return mv;
}
}
register.jsp
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<h1>register here</h1>
<form method="POST" action="">
<label>NAME:</label>
<input type=text id="name" placeholder="enter your name">
<label>Password</label>
<input type="text" id="password" placeholder="enter your password">
<label>Confirm Password</label>
<input type="text" id="confirmPassword" placeholder="enter your password">
<button type="submit">REGISTER</button>
</form>
</body>
</html>
application.properties
spring.mvc.view.prefix=/WEB-INF/view/
spring.mvc.view.suffix=.jsp
spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:h2:mem:demo1
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
MainApplication
CrudOperations.java
here i have included componentscan annotation for scanning the controllers in controller package
package com.example.CrudOperations;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
import com.example.CrudOperations.Controllers.homeController;
#SpringBootApplication
#ComponentScan(basePackages= {"com.example.CrudOperations.Controllers"})
public class CrudOperationsApplication {
public static void main(String[] args) {
SpringApplication.run(CrudOperationsApplication.class, args);
System.out.println("User Applications Started Running ");
}
}

Whitelabel error when I am running Spring boot application

I am getting this error:
Whitelabel Error Page This application has no explicit mapping for
/error, so you are seeing this as a fallback.
Mon May 21 12:25:52 EDT 2018 There was an unexpected error (type=Not
Found, status=404). No message available
ControllerClass
package com.sampletwo.location.controllers;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
#Controller
public class LocationController {
#RequestMapping("/showCreate")
public String showCreate() {
return "createLocation";
}
}
JSP
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Create Location</title>
</head>
<body>
<form action="" method="">
Id: <input type="text" name="id">
Code: <input type="text" name="code">
Name: <input type="text" name="name">
Type: Urban <input type="radio" name="type">
Rural <input type="radio" name="type">
<input type="submit" value="save">
</form>
</body>
</html>
application.properties
spring.datasource.url=jdbc:mysql://localhost:3306/locationdb
spring.datasource.username=root
spring.datasource.password=kanth123
spring.jpa.show-sql=true
spring.mvc.view.prefix=/WEB-INF/views/
spring.mvc.view.suffix=.jsp
server.port=8080
server.servlet.context-path=/locationwebproject
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.sampletwo.location</groupId>
<artifactId>locationwebproject</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>locationwebproject</name>
<description>Location Module</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.2.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Please help me out.

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