Inside of Package Explorer right click -> new -> Spring Starter Project
Inside of the Pop-up we need to:
- Create a unique project name, example
Pandas - Make sure the type is
Maven - Set Java Version to
11 - Set Packaging to
War - Group name convention...
com.username<-- your username here - Package name convention...
com.username.pandas<-- your project name here!
Once these are set choose Next
Select/Search for the following packages:
- Spring Boot DevTools
- Spring Web
Last, click Finish
Add these to the <dependencies></dependencies> tag in the file and save it
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>bootstrap</artifactId>
<version>4.5.0</version>
</dependency>
<dependency>
<groupId>org.webjars.bower</groupId>
<artifactId>jquery</artifactId>
<version>3.5.1</version>
</dependency>Create the folder src/main/webapp/WEB-INF
Create the file src/main/webapp/WEB-INF/index.jsp
Add this code in index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Pandas</title>
<link rel="stylesheet" href="/webjars/bootstrap/4.5.0/css/bootstrap.min.css" />
<script src="/webjars/jquery/3.5.1/jquery.min.js"></script>
<script src="/webjars/bootstrap/4.5.0/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h1>Hello World!</h1>
</div>
</body>
</html>Next add this line to the src/main/resources/application.properties file
spring.datasource.url=jdbc:mysql://localhost:3306/PandaDB?useUnicode=yes&characterEncoding=UTF-8&serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.jpa.hibernate.ddl-auto=update
spring.mvc.view.prefix=/WEB-INF/
Don't forget to create the PandaDB schema in MySQL.
(if you want to do this from the command line you can access the MySQL shell this way)
mysql -u root -p
# when prompted enter the password: rootCREATE SCHEMA PandaDB;
exit;Go to /src/main/java/ and add a new package inside your project example com.username.pandas.models
Inside the new ...models package create a new Java Class called Note
In our Note.java file add the following...
package com.username.pandas.models;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.validation.constraints.NotEmpty;
@Entity
@Table(name="notes")
public class Note {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@NotEmpty(message="Your note cannot be blank")
private String text;
public Note() {}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
}Go to /src/main/java/ and add a new package inside your project example com.username.pandas.repositories
Inside the new ...repositories package create a new Java Interface called NoteRepository
In our NoteRepository.java file add the following...
package com.username.pandas.repositories;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;
import com.username.pandas.models.Note;
@Repository
public interface NoteRepository extends CrudRepository<Note, Long> {}Go to /src/main/java/ and add a new package inside your project example com.username.pandas.services
Inside the new ...services package create a new Java Class called NoteService
In our NoteService.java file add the following...
package com.username.pandas.services;
import java.util.ArrayList;
import org.springframework.stereotype.Service;
import com.username.pandass.models.Note;
import com.username.pandas.repositories.NoteRepository;
@Service
public class NoteService {
private NoteRepository noteRepo;
public NoteService(NoteRepository noteRepo) {
this.noteRepo = noteRepo;
}
public ArrayList<Note> getAll() {
return (ArrayList<Note>) noteRepo.findAll();
}
public Note create(Note newNote) {
return noteRepo.save(newNote);
}
}Go to /src/main/java/ and add a new package inside your project example com.username.pandas.controllers
Inside the new ...controlers package create a new Java Class called HomeController
In our HomeController.java file add the following...
package com.username.pandas.controllers;
import javax.validation.Valid;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PostMapping;
import com.username.pandas.models.Note;
import com.username.pandas.services.NoteService;
@Controller
public class HomeController {
private NoteService noteServ;
public HomeController(NoteService noteServ) {
this.noteServ = noteServ;
}
@GetMapping("/")
public String index(Model model) {
model.addAttribute("newNote", new Note()); // binds to form helper in index.jsp
model.addAttribute("allNotes", noteServ.getAll()); // displays all notes
return "index.jsp";
}
@PostMapping("/note")
public String create(@Valid @ModelAttribute("newNote") Note newNote,
BindingResult result, Model model) {
if(result.hasErrors()) {
// still display notes if validation error
model.addAttribute("allNotes", noteServ.getAll());
return "index.jsp";
}
// otherwise create a note and redirect back
noteServ.create(newNote);
return "redirect:/";
}
}Inside of index.jsp add the following...
<ul class="list-group">
<li class="list-group-item">Notes</li>
<c:forEach items="${allNotes}" var="note">
<li class="list-group-item">${note.text}</li>
</c:forEach>
<li class="list-group-item">
<form:form action="/note" method="post" modelAttribute="newNote">
<form:input path="text" placeholder="Your note here..."/>
<form:errors path="text" class="text-danger" />
<input type="submit" value="Add Note" class="btn btn-sm btn-primary" />
</form:form>
</li>
</ul>Right click on the PandasApplication.java -> run as -> Spring Boot App
Check our server at http://localhost:8080
##BCrypt dependency to add to step 1
org.mindrot jbcrypt 0.4