I have created a SpringBoot application with thymeleaf template, This application running successfully on Eclipse IDE and Running War file by MAC terminal command:
java -jar ./SpringBootTestMe.war
But problem is that it is not running on external tomcat-9.0, Giving below ERROR:
Sun Jan 26 09:01:37 IST 2020 There was an unexpected error
(type=Internal Server Error, status=500). Error during execution of
processor
'org.thymeleaf.spring5.processor.SpringInputGeneralFieldTagProcessor'
(template: "index" - line 13, col 28)
My source code are
File pom.xml
<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.spboot</groupId>
<artifactId>SpringBootTestMe</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>SpringBootTest</name>
<packaging>war</packaging>
<!-- lookup parent from repository -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.1.RELEASE</version>
<relativePath />
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<start-class>com.spboot.web.TestApp</start-class>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</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-tomcat</artifactId>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<finalName>SpringBootTestMe</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
SpringBootMainClass
package com.spboot.web;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
#SpringBootApplication
public class TestApp extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(TestApp.class, args);
System.out.println("--------AppStarted--------");
}
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(TestApp.class);
}
}
HomeController
#Controller
#RequestMapping("SpringBootTestMe")
public class HomeController {
#RequestMapping(value={"", "login"})
public String login(UserRecord userRecord) {
System.out.println("HomeController Called...");
return "index";
}
}
ModalClass
public class UserRecord implements Serializable {
private Long id;
private String username;
private String email;
//Setters and getters
}
index.html
<!DOCTYPE html>
<html xmlns:th="https://thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Login Page</title>
</head>
<body>
<div>
<form action="#" th:action="#{/login}" th:object="${userRecord}" method="post">
<table>
<tr>
<td><label for="username">User Name</label></td>
<td><input type="text" th:field="*{username}" /></td>
<td th:if="${#fields.hasErrors('username')}" th:errors="*{username}">Username Error</td>
</tr>
<tr>
<td><label for="email">Email</label></td>
<td><input type="text" th:field="*{email}"></input></td>
<td th:if="${#fields.hasErrors('email')}" th:errors="*{email}">Name Error</td>
</tr>
<tr>
<td></td>
<td><input type="submit" value="Submit"></input></td>
</tr>
</table>
</form>
</div>
</body>
</html>
It's giving error on username text field, tomcat not recognising the th:field
Can anybody help me please.
Thanks
Related
Can anyone please help me out on this issue?
I would like to predict words from a database into an input field using spring boot. Example if I type « I am searching for a book called snowfall » in the input field, the title snowfall should be predicted in this field when the user starts to type the word if it exists in the database.
Many thanks in advance for your answers.
Please see below the content of my html file, and java files:
index.html:
<!DOCTYPE html>
<html lang="en">
<html xmlns:th="http://www.thymeleaf.org">
<head>
<title>Books</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
</head>
<body class="text-center">
<div>
<img th:src="#{/images/index.PNG}"/>
</div>
<div class="container-fluid">
<div class="h-100 row align-items-center">
<div class="col-sm-4"></div>
<div class="col-sm-4">
<h2>Find a Book</h2>
<form method="post">
<div class="form-group" id="owner">
</div>
<div class="form-group">
Books List
</div>
<div class="text-center">
</div>
<div class="form-group">
<input type="submit" value = "Search">
</div>
</form>
</div>
</div>
</div>
<div>
</div>
<div id='owner1' style='margin:0 auto;width:100%;'></div>
<div>
<table class="table">
<thead>
<tr>
<th scope="col">Book Name</th>
<th scope="col">Author</th>
<th scope="col">Book Reference</th>
</tr>
</thead>
<tbody>
<tr >
<td></td>
<td></td>
<td></td>
</tr>
</tbody>
</table>
</div>
<!--<script th:src="#{/search/js/source1.js}"></script>-->
<script src="source1.js"></script>
<script>
var owner = document.getElementById('owner');
var p = completely(owner, {
fontSize:'32px',
promptInnerHTML:''
});
p.input.style.borderTop = '2px solid #999';
p.input.style.borderBottom = '2px solid #999';
p.onChange = function (text) {
p.startFrom = text.lastIndexOf(' ')+1;
p.repaint();
};
p.options = ["snowvfall","Romeo & Juliet","C++"];
p.input.maxLength = 50; // limit the max number of characters in the input text
</script>
<script>
var selectedOptionText = $('#owner').find(":selected").text();
$("p").text(selectedOptionText);
</script>
</body>
</html>
Books.java:
package com.progweb.Progweb.Models;
import javax.persistence.*;
#Entity
#Table(name = "books")
public class Books {
#Id
#GeneratedValue(strategy= GenerationType.IDENTITY)
#Column(name = "id")
private int id;
#Column(name="bookName", length=100, nullable=false, unique=false)
private String bookName;
#Column(name="bookRef", length=100, nullable=false, unique=false)
private String bookRef;
#Column(name="bookAuthor", length=100, nullable=false, unique=false)
private String bookAuthor;
}
BookController.java:
package com.progweb.Progweb.Controllers;
import com.progweb.Progweb.Models.Books;
import com.progweb.Progweb.Repository.BooksRepository;
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.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;
import java.util.ArrayList;
import java.util.List;
#Controller
#RequestMapping(path="/books")
public clas`enter code here`s BookController {
#Autowired
private BooksRepository booksRepository;
#GetMa`enter code here`pping("/index")
public String index () {
return "index";
}
//Affichage de la page books
#GetMapping("/showPage_Books")
public String ShowPage_Books(Model model, RedirectAttributes attributes){
List<Books> books = new ArrayList<Books>();`enter code here`
books = booksRepository.allBooks();
attributes.addFlashAttribute("books",books);
//model.addAttribute("books", books);
return "Page_Books";
}
}
BooksRepository.java:
package com.progweb.Progweb.Repository;
import com.progweb.Progweb.Models.Books;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;
import java.util.List;
#Repository
public interface BooksRepository extends CrudRepository<Books, Integer> {
#Query(value = "select * from books",nativeQuery = true)
public List<Books> allBooks();
}
my pom.xmlfile:
<?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>2.4.0</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.progweb</groupId>
<artifactId>Progweb</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Progweb</name>
<description>School project</description>
<properties>
<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-data-rest</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</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>
<dependency>
<groupId>io.projectreactor</groupId>
<artifactId>reactor-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
if im following your requirement , when the UI user inserts for example "a" you would like to show a list of all books starting (or containing a), this is called a LIKE query - using the #Query annotation you are already using in your repo you should do this (this will return everything that contains 'a'):
#Query("SELECT b FROM books b WHERE b.bookName LIKE %:title%")
List<Book> searchByTitleLike(#Param("title") String title);
for everything starting with 'a':
#Query("SELECT b FROM books b WHERE b.bookName LIKE :title%")
List<Book> searchByTitleLike(#Param("title") String title);
this is an altered example taken from this article: https://www.baeldung.com/spring-jpa-like-queries
I am trying to create a UI with JSP and SpringBoot using SpringMVC.
after all the configuration properly done i am still getting the error - "java.lang.ClassNotFoundException: org.eclipse.jdt.internal.compiler.env.INameEnvironment" I have tried so much to resolve it but still not working. if anyone can help me. thank you in advance.
My file structure
enter image description here
My Controller
package com.capgemini.PACE.PACE;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
#Controller
public class HelloController {
#RequestMapping("/")
public String Hello()
{
return "/Hello";
}
}
My SpringBoot page
package com.capgemini.PACE.PACE;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class PaceApplication {
public static void main(String[] args) {
SpringApplication.run(PaceApplication.class, args);
}
}
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 http://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>2.1.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.capgemini.PACE</groupId>
<artifactId>PACE</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>PACE</name>
<description>Demo project for Spring Boot</description>
<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-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
my JSP page
<%# page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>HEllo!!</h1>
</body>
</html>
my application.properties
server.port=8082
spring.mvc.view.prefix = /WEB-INF/views/
spring.mvc.view.suffix = .jsp
spring.mvc.static-path-pattern=/resources/**
I have tried adding these dependencies in the pom.xml still didn't work getting the same error
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>javax.servlet.jsp.jstl-api</artifactId>
<version>1.2.1</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
I am getting error-
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Wed Apr 03 14:06:02 EDT 2019
There was an unexpected error (type=Internal Server Error, status=500).
org/eclipse/jdt/internal/compiler/env/INameEnvironment
In my case it worked by adding this dependency in pom.xml file.
It is needed to compile jsp don't know why tomcat-embed-jasper version is not working
<dependency>
<groupId>org.eclipse.jdt.core.compiler</groupId>
<artifactId>ecj</artifactId>
<version>4.6.1</version>
<scope>provided</scope>
</dependency>
My directory
I'm trying to create spring boot application for school that lists books to a html page from database with a controller.
Personally, i think that the problem is that the controller cannot find the template for some reason. Because when i navigate to the wanted template through chrome, it just shows "booklist" on the page, nothing else.
I've tried creating totally new project and copying the code from my other files to the new files with no results.
My controller class:
#Controller
#ResponseBody
public class BookController {
#Autowired
BookRepository bookRepository;
#RequestMapping(value = "/books", method = RequestMethod.GET)
public String getBooks(Model model) {
List<Book> books = (List<Book>) bookRepository.findAll();
model.addAttribute("books", books);
return "booklist";
}
My html template:
<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<title>Book List</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body>
<h1>Books</h1>
<table>
<tr>
<th>Id</th>
<th>Title</th>
<th>Year</th>
<th>Isbn</th>
<th>Price</th>
</tr>
<tr th:each="book : ${books}">
<td th:text="${book.id}">id</td>
<td th:text="${book.title}">title</td>
<td th:text="${book.year}">year</td>
<td th:text="${book.isbn}">isbn</td>
<td th:text="${book.price}">price</td>
</tr>
</table>
</body>
</html>
pom.xml file:
<?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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>hh.swd20</groupId>
<artifactId>Bookstore</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Bookstore</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</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-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</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>
</plugins>
</build>
</project>
application.properties file:
spring.h2.console.enabled=true
spring.h2.console.path=/h2-console
spring.jpa.show-sql=true
Remove the annotation #ResponseBody from your controller class, because:
The #ResponseBody annotation tells a controller that the object returned is automatically serialized into JSON and passed back into the HttpResponse object.
Then the returned String booklist will be used by Spring-MVC to resolve the named HTML template file.
The template file (e.g. booklist.html) will be looked for by default within default template directory is src/main/resources/templates.
Otherwise make sure to have configured the ViewResolver properly.
For Thymeleaf you have to add dependency to your Maven POM:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
See also this Spring-Boot & Thymeleaf tutorial
You can try this .
Hit : localhost://yourportnumber/api/books
//#Controller
#RestController
//#ResponseBody
#RequestMapping("/api")
public class BookController {
#Autowired
BookRepository bookRepository;
#GetMapping(value = "/books", method = RequestMethod.GET)
public ModelAndView getBooks(Model model) {
List<Book> books = (List<Book>) bookRepository.findAll();
model.addAttribute("books", books);
ModelAndView mav = new ModelAndView("booklist");
return mav;
}
Like the title says, I'm getting the Whitelabel 404 error page when trying to access localhost:8080.
Main class:
package com.michaelLong.studentaddressbook;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
#SpringBootApplication
public class StudentAddressBookApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(StudentAddressBookApplication.class, args);
}
}
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.michaelLong</groupId>
<artifactId>student-address-book</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>student-address-book</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.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-actuator</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.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Controller:
package controller;
import model.Student;
import model.StudentRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import org.springframework.ui.Model;
import java.util.Map;
#Controller
public class StudentController {
#Autowired
StudentRepository studentRepository;
#GetMapping("/")
public String showStudents(Model model){
model.addAttribute("students", studentRepository.findAll());
return "showStudents";
}
}
application.properties:
spring.jpa.hibernate.ddl-auto=none
spring.datasource.url=jdbc:mysql://localhost:3306/StudentAddressBook
spring.datasource.username=root
spring.datasource.password=SQLpassword
showStudents.html:
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Student List</title>
</head>
<body>
<h2>List of students</h2>
<table>
<tr>
<th>Id</th>
<th>First name</th>
<th>Last name</th>
</tr>
<tr th:each="student: ${students}">
<td th:text="${student.id}">Id</td>
<td th:text="${student.firstName}">First name</td>
<td th:text="${student.lastName}">Last name</td>
</tr>
</table>
</body>
</html>
Project structure:
src
|__main
|__java
| |__com.example.studentaddressbook
| | |__StudentAddressBookApplication
| |__controller
| | |__StudentController
| |__model
| |__Student
| |__StudentRepository
|__resources
|__static
|__templates
| |__showStudents.html
|__application.properties
I've tried looking at a lot of different tutorials, and a few SO posts like these:
Spring Boot and Thymeleaf: Can't find HTML templates & Why the html page doesn't get showed in thymeleaf?
I was originally trying to use JSPs, but I couldn't get those to work either. I feel like I'm banging my head against the wall at this point and I'm not sure what else to do. This is my first time trying to use Spring Boot and Thymeleaf, so I'm having some difficulty figuring this out.
Any help trying to figure out why I can't access the HTML page would be greatly appreciated.
You have your StudentAddressBookApplication located in package "com.michaelLong.studentaddressbook" => it will scan only the beans from this parent package.
StudentController is located in package "controller" => the application will not scan it at all.
Very simple solution : move StudentController to package com.michaelLong.studentaddressbook. Also, the same applies for StudentRepository.
P.S packages in java are always lower case.
The problem is happening because of you project structure. Create package controller and model under com.example.studentaddressbook. Create project structure like this image. Let us know it it work
For those who are using Intellij, I had problem with Intellij run. After:
ctrl+shift+a -> type: reimport... and select: "Reimport All Maven Projects". Made It working again.
Replacing common thymeleaf dependency by thymeleaf starter made the trick for me:
[Error]
implementation 'org.thymeleaf:thymeleaf:3.1.0.M1'
[Correct]:
implementation 'org.springframework.boot:spring-boot-starter-thymeleaf:2.6.7'
I wanted to test the code in
http://spring.io/guides/gs/handling-form-submission/ but when i run the application , i have http status 404, the requested ressource is not available
I don't know why , could you help ?
package controller;
import org.springframework.boot.autoconfigure.web.ErrorController;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
#Controller
public class HelloController implements ErrorController{
private static final String PATH = "/error";
#RequestMapping(value = PATH)
public String error() {
return "Error";
}
#Override
public String getErrorPath() {
return PATH;
}
#RequestMapping(value="/greeting", method=RequestMethod.GET)
public String greetingForm(Model model) {
model.addAttribute("greeting", new Greeting());
return "greeting";
}
#RequestMapping(value="/greeting", method=RequestMethod.POST)
public String greetingSubmit(#ModelAttribute Greeting greeting, Model model) {
model.addAttribute("greeting", greeting);
return "result";
}
}
package controller;
public class Greeting {
private long id;
private String content;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
}
package demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration;
#EnableAutoConfiguration(exclude=ErrorMvcAutoConfiguration.class)
#SpringBootApplication
public class TestApplication {
public static void main(String[] args) {
SpringApplication.run(TestApplication.class, args);
}
}
<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<title>Getting Started: Handing Form Submission</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body>
<h1>Form</h1>
<form action="#" th:action="#{/greeting}" th:object="${greeting}" method="post">
<p>Id: <input type="text" th:field="*{id}" /></p>
<p>Message: <input type="text" th:field="*{content}" /></p>
<p><input type="submit" value="Submit" /> <input type="reset" value="Reset" /></p>
</form>
</body>
</html>
<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<title>Getting Started: Handing Form Submission</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body>
<h1>Result</h1>
<p th:text="'id: ' + ${greeting.id}" />
<p th:text="'content: ' + ${greeting.content}" />
Submit another message
</body>
</html>
<?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>org.test</groupId>
<artifactId>Test</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>test</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<start-class>demo.TestApplication</start-class>
<java.version>1.7</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-jdbc</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>
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
![The architecture of the application ![\]\[1\]][1]
[1]: http://i.stack.imgur.com/bgSzx.png