SpringBoot- service, controller, dao with JSF

spring-boot-mvc/pom.xml

@@ -21,6 +21,32 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>
 		</dependency>
+		<!--JSF-->
+		<dependency>
+			<groupId>com.sun.faces</groupId>
+			<artifactId>jsf-api</artifactId>
+			<version>2.2.9</version>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.tomcat.embed</groupId>
+			<artifactId>tomcat-embed-jasper</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>javax.faces</groupId>
+			<artifactId>javax.faces-api</artifactId>
+			<version>2.1</version>
+		</dependency>
+		<dependency>
+			<groupId>javax.servlet</groupId>
+			<artifactId>jstl</artifactId>
+			<version>1.2</version>
+		</dependency>
+		<dependency>
+			<groupId>com.sun.faces</groupId>
+			<artifactId>jsf-impl</artifactId>
+			<version>2.2.8-02</version>
+		</dependency>
+
 
 		<dependency>
 			<groupId>org.springframework.boot</groupId>

spring-boot-mvc/src/main/java/com/baeldung/springbootmvc/jsfapplication/JsfApplication.java

@@ -0,0 +1,31 @@
+package com.baeldung.springbootmvc.jsfapplication;
+
+import javax.faces.webapp.FacesServlet;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.web.servlet.ServletRegistrationBean;
+import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+
+import com.baeldung.springbootmvc.jsfapplication.controller.JsfController;
+import com.baeldung.springbootmvc.jsfapplication.model.TodoDao;
+import com.baeldung.springbootmvc.jsfapplication.service.TodoService;
+
+@SpringBootApplication
+@ComponentScan(basePackageClasses = { JsfController.class, TodoDao.class, TodoService.class })
+public class JsfApplication extends SpringBootServletInitializer {
+
+    public static void main(String[] args) {
+        SpringApplication.run(JsfApplication.class, args);
+    }
+
+    @Bean
+    public ServletRegistrationBean servletRegistrationBean() {
+        FacesServlet servlet = new FacesServlet();
+        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(servlet, "*.jsf");
+        return servletRegistrationBean;
+    }
+
+}

spring-boot-mvc/src/main/java/com/baeldung/springbootmvc/jsfapplication/controller/JsfController.java

@@ -0,0 +1,19 @@
+package com.baeldung.springbootmvc.jsfapplication.controller;
+
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Component;
+
+@Scope(value = "session")
+@Component(value = "jsfController")
+public class JsfController {
+
+    public String loadTodoPage() {
+        checkPermission();
+        return "/todo.xhtml";
+    }
+
+    private void checkPermission() {
+        // Details omitted
+    }
+
+}

spring-boot-mvc/src/main/java/com/baeldung/springbootmvc/jsfapplication/model/Dao.java

@@ -0,0 +1,17 @@
+package com.baeldung.springbootmvc.jsfapplication.model;
+
+import java.util.Collection;
+import java.util.Optional;
+
+public interface Dao<T> {
+
+    Optional<T> get(int id);
+
+    Collection<T> getAll();
+
+    int save(T t);
+
+    void update(T t);
+
+    void delete(T t);
+}

spring-boot-mvc/src/main/java/com/baeldung/springbootmvc/jsfapplication/model/Todo.java

@@ -0,0 +1,32 @@
+package com.baeldung.springbootmvc.jsfapplication.model;
+
+public class Todo {
+
+    private int id;
+    private String message;
+    private int priority;
+	
+	public int getId() {
+		return id;
+	}
+	
+	public void setId(int id) {
+		this.id = id;
+	}
+	
+	public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    public int getPriority() {
+        return priority;
+    }
+
+    public void setPriority(int priority) {
+        this.priority = priority;
+    }
+}

spring-boot-mvc/src/main/java/com/baeldung/springbootmvc/jsfapplication/model/TodoDao.java

@@ -0,0 +1,48 @@
+package com.baeldung.springbootmvc.jsfapplication.model;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class TodoDao implements Dao<Todo> {
+
+    private List<Todo> todoList = new ArrayList<>();
+    
+    @Override
+    public Optional<Todo> get(int id) {
+        return Optional.ofNullable(todoList.get(id));
+    }
+
+    @Override
+    public Collection<Todo> getAll() {
+        return Collections.unmodifiableCollection(todoList.stream()
+            .filter(Objects::nonNull)
+            .collect(Collectors.toList()));
+    }
+
+    @Override
+    public int save(Todo todo) {
+        todoList.add(todo);
+        int index = todoList.size() - 1;
+        todo.setId(index);
+        return index;
+    }
+
+    @Override
+    public void update(Todo todo) {
+        todoList.set(todo.getId(), todo);
+    }
+
+    @Override
+    public void delete(Todo todo) {
+        todoList.set(todo.getId(), null);
+    }
+
+}

spring-boot-mvc/src/main/java/com/baeldung/springbootmvc/jsfapplication/service/TodoService.java

@@ -0,0 +1,50 @@
+package com.baeldung.springbootmvc.jsfapplication.service;
+
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.stream.Collectors;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Component;
+
+import com.baeldung.springbootmvc.jsfapplication.model.Dao;
+import com.baeldung.springbootmvc.jsfapplication.model.Todo;
+
+@Scope(value = "session")
+@Component(value = "todoService")
+public class TodoService {
+
+    @Autowired
+    private Dao<Todo> todoDao;
+    private Todo todo = new Todo();
+
+    public void save() {
+        todoDao.save(todo);
+        todo = new Todo();
+    }
+
+    public Collection<Todo> getAllTodo() {
+        return todoDao.getAll();
+    }
+
+    public Collection<Todo> getAllTodoSortedByPriority() {
+        return todoDao.getAll()
+            .stream()
+            .sorted(Comparator.comparingInt(Todo::getId))
+            .collect(Collectors.toList());
+    }
+
+    public int saveTodo(Todo todo) {
+        validate(todo);
+        return todoDao.save(todo);
+    }
+
+    private void validate(Todo todo) {
+        // Details omitted
+    }
+
+    public Todo getTodo() {
+        return todo;
+    }
+}

spring-boot-mvc/src/main/webapp/WEB-INF/faces-config.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<faces-config xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee/web-facesconfig_2_2.xsd"
+	version="2.2">
+	<application>
+		<el-resolver>org.springframework.web.jsf.el.SpringBeanFacesELResolver</el-resolver>
+	</application>
+</faces-config>

spring-boot-mvc/src/main/webapp/WEB-INF/web.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<web-app xmlns="http://java.sun.com/xml/ns/javaee"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
+          http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
+	version="2.5">
+
+	<servlet>
+		<servlet-name>Faces Servlet</servlet-name>
+		<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
+		<load-on-startup>1</load-on-startup>
+	</servlet>
+	<servlet-mapping>
+		<servlet-name>Faces Servlet</servlet-name>
+		<url-pattern>*.jsf</url-pattern>
+	</servlet-mapping>
+	<context-param>
+		<param-name>com.sun.faces.forceLoadConfiguration</param-name>
+		<param-value>true</param-value>
+	</context-param>
+</web-app>

spring-boot-mvc/src/main/webapp/index.xhtml

@@ -0,0 +1,20 @@
+<f:view xmlns="http://www.w3c.org/1999/xhtml"
+        xmlns:f="http://java.sun.com/jsf/core"
+        xmlns:h="http://java.sun.com/jsf/html">
+    <h:head>
+        <meta charset="utf-8"/>
+        <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"/>
+        <title>TO-DO application</title>
+    </h:head>
+    <h:body>
+        <div>
+            <p>Welcome in the TO-DO application!</p>
+            <p style="height:50px">
+                This is a static message rendered from xhtml.
+                <h:form>
+                    <h:commandButton value="Load To-do page!" action="#{jsfController.loadTodoPage}" />
+                </h:form>
+            </p>
+        </div>
+    </h:body>
+</f:view>

spring-boot-mvc/src/main/webapp/todo.xhtml

@@ -0,0 +1,38 @@
+<f:view xmlns="http://www.w3c.org/1999/xhtml"
+        xmlns:f="http://java.sun.com/jsf/core"
+        xmlns:h="http://java.sun.com/jsf/html">
+    <h:head>
+        <meta charset="utf-8"/>
+        <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"/>
+        <title>TO-DO application</title>
+    </h:head>
+    <h:body>
+        <div>
+            <div>
+                List of TO-DO items
+            </div>
+            <h:dataTable value="#{todoService.allTodo}" var="item">
+                <h:column>
+                    <f:facet name="header"> Message</f:facet>
+                    #{item.message}
+                </h:column>
+                <h:column>
+                    <f:facet name="header"> Priority</f:facet>
+                    #{item.priority}
+                </h:column>
+            </h:dataTable>
+        </div>
+        <div>
+            <div>
+                Add new to-do item:
+            </div>
+            <h:form>
+                <h:outputLabel for="message" value="Message: "/>
+                <h:inputText id="message" value="#{todoService.todo.message}"/>
+                <h:outputLabel for="priority" value="Priority: "/>
+                <h:inputText id="priority" value="#{todoService.todo.priority}" converterMessage="Please enter digits only."/>
+                <h:commandButton value="Save" action="#{todoService.save}"/>
+            </h:form>
+        </div>
+    </h:body>
+</f:view>