{"id":1252,"date":"2024-11-29T07:42:26","date_gmt":"2024-11-29T10:42:26","guid":{"rendered":"https:\/\/micheladrianomedeiros.com.br\/blog\/?p=1252"},"modified":"2024-11-29T07:43:09","modified_gmt":"2024-11-29T10:43:09","slug":"introducao_ao_javaserver_faces","status":"publish","type":"post","link":"https:\/\/micheladrianomedeiros.com.br\/blog\/introducao_ao_javaserver_faces\/","title":{"rendered":"Introdu\u00e7\u00e3o ao JavaServer Faces"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2024\/11\/DALL\u00b7E-2024-11-29-07.30.00-A-professional-illustration-showing-the-concept-of-JavaServer-Faces-JSF.-The-image-includes-a-structured-representation-of-a-web-application-archite.jpg\" alt=\"Introdu\u00e7\u00e3o ao JavaServer Faces\" class=\"wp-image-1253\" srcset=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2024\/11\/DALL\u00b7E-2024-11-29-07.30.00-A-professional-illustration-showing-the-concept-of-JavaServer-Faces-JSF.-The-image-includes-a-structured-representation-of-a-web-application-archite.jpg 1024w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2024\/11\/DALL\u00b7E-2024-11-29-07.30.00-A-professional-illustration-showing-the-concept-of-JavaServer-Faces-JSF.-The-image-includes-a-structured-representation-of-a-web-application-archite-300x300.jpg 300w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2024\/11\/DALL\u00b7E-2024-11-29-07.30.00-A-professional-illustration-showing-the-concept-of-JavaServer-Faces-JSF.-The-image-includes-a-structured-representation-of-a-web-application-archite-150x150.jpg 150w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2024\/11\/DALL\u00b7E-2024-11-29-07.30.00-A-professional-illustration-showing-the-concept-of-JavaServer-Faces-JSF.-The-image-includes-a-structured-representation-of-a-web-application-archite-768x768.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p><strong>Li\u00e7\u00e3o 1: Introdu\u00e7\u00e3o ao JavaServer Faces (JSF)<\/strong><\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/micheladrianomedeiros.com.br\/blog\/introducao_ao_javaserver_faces\/#O_que_e_JSF\" >O que \u00e9 JSF?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/micheladrianomedeiros.com.br\/blog\/introducao_ao_javaserver_faces\/#Por_que_usar_JSF\" >Por que usar JSF?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/micheladrianomedeiros.com.br\/blog\/introducao_ao_javaserver_faces\/#Como_funciona_o_ciclo_de_vida_do_JSF\" >Como funciona o ciclo de vida do JSF?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/micheladrianomedeiros.com.br\/blog\/introducao_ao_javaserver_faces\/#Criando_sua_primeira_aplicacao_JSF\" >Criando sua primeira aplica\u00e7\u00e3o JSF<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/micheladrianomedeiros.com.br\/blog\/introducao_ao_javaserver_faces\/#Tarefa_pratica\" >Tarefa pr\u00e1tica<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/micheladrianomedeiros.com.br\/blog\/introducao_ao_javaserver_faces\/#Links\" >Links<\/a><\/li><\/ul><\/nav><\/div>\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"O_que_e_JSF\"><\/span><strong>O que \u00e9 JSF?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>JavaServer Faces (JSF) \u00e9 um framework Java para constru\u00e7\u00e3o de interfaces de usu\u00e1rio baseadas na web. Ele facilita o desenvolvimento de aplica\u00e7\u00f5es web ao oferecer:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Componentes reutiliz\u00e1veis<\/strong>: Com JSF, voc\u00ea pode usar e personalizar componentes como bot\u00f5es, tabelas e campos de entrada.<\/li>\n\n\n\n<li><strong>Separa\u00e7\u00e3o de responsabilidades<\/strong>: A arquitetura do JSF segue o padr\u00e3o MVC (Model-View-Controller), separando a l\u00f3gica de neg\u00f3cios, a apresenta\u00e7\u00e3o e o controle.<\/li>\n\n\n\n<li><strong>Gerenciamento de estado<\/strong>: O framework gerencia automaticamente o estado dos componentes de UI entre requisi\u00e7\u00f5es HTTP.<\/li>\n\n\n\n<li><strong>Extensibilidade<\/strong>: Permite a cria\u00e7\u00e3o de componentes e comportamentos personalizados para atender \u00e0s necessidades espec\u00edficas da aplica\u00e7\u00e3o.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Por_que_usar_JSF\"><\/span><strong>Por que usar JSF?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>H\u00e1 muitas raz\u00f5es para usar JSF, mas algumas se destacam:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Integra\u00e7\u00e3o simplificada<\/strong>: Ele se conecta facilmente a outros frameworks, como Spring, CDI e JPA.<\/li>\n\n\n\n<li><strong>Padr\u00f5es consolidados<\/strong>: Por ser parte da especifica\u00e7\u00e3o Jakarta EE (anteriormente Java EE), JSF \u00e9 amplamente confi\u00e1vel e bem documentado.<\/li>\n\n\n\n<li><strong>Abstra\u00e7\u00e3o dos detalhes t\u00e9cnicos<\/strong>: JSF permite que voc\u00ea foque nos componentes e na l\u00f3gica da aplica\u00e7\u00e3o, deixando de lado os detalhes do HTML e HTTP.<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Como_funciona_o_ciclo_de_vida_do_JSF\"><\/span><strong>Como funciona o ciclo de vida do JSF?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>O ciclo de vida do JSF segue seis fases principais que garantem o processamento completo de uma requisi\u00e7\u00e3o:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Restore View (Restaura\u00e7\u00e3o da Vis\u00e3o)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>O framework restaura o estado da interface ou cria uma nova vis\u00e3o para a requisi\u00e7\u00e3o.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Apply Request Values (Aplica\u00e7\u00e3o de Valores da Requisi\u00e7\u00e3o)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Os dados enviados pelo usu\u00e1rio s\u00e3o vinculados aos componentes correspondentes.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Process Validations (Valida\u00e7\u00e3o dos Dados)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Os valores fornecidos s\u00e3o validados, como a verifica\u00e7\u00e3o de campos obrigat\u00f3rios.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Update Model Values (Atualiza\u00e7\u00e3o do Modelo)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Os valores validados s\u00e3o transferidos para os beans gerenciados.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Invoke Application (Invoca\u00e7\u00e3o da Aplica\u00e7\u00e3o)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>A l\u00f3gica de neg\u00f3cios, como salvar informa\u00e7\u00f5es, \u00e9 executada.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Render Response (Renderiza\u00e7\u00e3o da Resposta)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>O JSF gera a interface do usu\u00e1rio e a envia de volta ao cliente.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Criando_sua_primeira_aplicacao_JSF\"><\/span><strong>Criando sua primeira aplica\u00e7\u00e3o JSF<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p><strong>Pr\u00e9-requisitos:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JDK 11 ou superior.<\/li>\n\n\n\n<li>Um servidor Jakarta EE, como Apache TomEE ou WildFly.<\/li>\n\n\n\n<li>Uma IDE como IntelliJ IDEA ou Eclipse.<\/li>\n<\/ul>\n\n\n\n<p><strong>Estrutura b\u00e1sica do projeto:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Um arquivo de configura\u00e7\u00e3o principal chamado <code>faces-config.xml<\/code>.<\/li>\n\n\n\n<li>P\u00e1ginas XHTML para a interface do usu\u00e1rio.<\/li>\n\n\n\n<li>Beans gerenciados que controlam a l\u00f3gica de neg\u00f3cios.<\/li>\n<\/ul>\n\n\n\n<p><strong>Exemplo pr\u00e1tico:<\/strong> Crie os arquivos abaixo para ver o JSF em a\u00e7\u00e3o.<\/p>\n\n\n\n<p><strong>faces-config.xml<\/strong>:<\/p>\n\n\n\n<div class=\"wp-block-urvanov-syntax-highlighter-code-block\"><pre class=\"lang:java decode:true \" >&lt;faces-config xmlns=\"http:\/\/xmlns.jcp.org\/xml\/ns\/javaee\"\n              xmlns:xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\"\n              xsi:schemaLocation=\"http:\/\/xmlns.jcp.org\/xml\/ns\/javaee\n              http:\/\/xmlns.jcp.org\/xml\/ns\/javaee\/web-facesconfig_2_3.xsd\"\n              version=\"2.3\"&gt;\n&lt;\/faces-config&gt;\n<\/pre><\/div>\n\n\n\n<p><strong>P\u00e1gina XHTML<\/strong>:<\/p>\n\n\n\n<div class=\"wp-block-urvanov-syntax-highlighter-code-block\"><pre class=\"lang:xhtml decode:true \" >&lt;!DOCTYPE html&gt;\n&lt;html xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\"\n      xmlns:h=\"http:\/\/java.sun.com\/jsf\/html\"&gt;\n&lt;h:head&gt;\n    &lt;title&gt;Ol\u00e1 JSF!&lt;\/title&gt;\n&lt;\/h:head&gt;\n&lt;h:body&gt;\n    &lt;h:form&gt;\n        &lt;h:inputText value=\"#{meuBean.nome}\" \/&gt;\n        &lt;h:commandButton value=\"Enviar\" action=\"#{meuBean.exibirMensagem}\" \/&gt;\n    &lt;\/h:form&gt;\n    &lt;h:outputText value=\"#{meuBean.mensagem}\" \/&gt;\n&lt;\/h:body&gt;\n&lt;\/html&gt;\n<\/pre><\/div>\n\n\n\n<p><strong>Bean gerenciado (MeuBean.java)<\/strong>:<\/p>\n\n\n\n<div class=\"wp-block-urvanov-syntax-highlighter-code-block\"><pre class=\"lang:java decode:true \" >import jakarta.faces.bean.ManagedBean;\n\n@ManagedBean\npublic class MeuBean {\n    private String nome;\n    private String mensagem;\n\n    public String getNome() {\n        return nome;\n    }\n\n    public void setNome(String nome) {\n        this.nome = nome;\n    }\n\n    public String getMensagem() {\n        return mensagem;\n    }\n\n    public void exibirMensagem() {\n        mensagem = \"Ol\u00e1, \" + nome + \"!\";\n    }\n}\n<\/pre><\/div>\n\n\n\n<p><strong>Como executar o projeto:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Implemente o projeto em um servidor Jakarta EE.<\/li>\n\n\n\n<li>Abra o navegador e acesse a p\u00e1gina XHTML.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tarefa_pratica\"><\/span><strong>Tarefa pr\u00e1tica<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Configure seu ambiente e crie a aplica\u00e7\u00e3o b\u00e1sica seguindo os exemplos acima.<\/li>\n\n\n\n<li>Teste a intera\u00e7\u00e3o entre os componentes UI e os beans gerenciados.<\/li>\n\n\n\n<li>Avalie como o estado da aplica\u00e7\u00e3o \u00e9 gerenciado ao enviar dados.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Links\"><\/span>Links<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><a href=\"https:\/\/go.hotmart.com\/B42505720O\" target=\"_blank\" rel=\"noreferrer noopener\">Curso Design de Aplicativos<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/micheladrianomedeiros.com.br\/blog\/introducao_ao_sql\/\" target=\"_blank\" rel=\"noreferrer noopener\">Introdu\u00e7\u00e3o ao SQL e comandos b\u00e1sicos<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Li\u00e7\u00e3o 1: Introdu\u00e7\u00e3o ao JavaServer Faces (JSF) O que \u00e9 JSF? JavaServer Faces (JSF) \u00e9 um framework Java para constru\u00e7\u00e3o de interfaces de usu\u00e1rio baseadas na web. Ele facilita o desenvolvimento de aplica\u00e7\u00f5es web ao oferecer: Por que usar JSF? H\u00e1 muitas raz\u00f5es para usar JSF, mas algumas se destacam: Como funciona o ciclo de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1253,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[402],"tags":[415,424,421,409,403,426,247,407,406,416,422,411,408,425,404,410,419,412,186,231,413,423,414,420,417,418,405],"class_list":["post-1252","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-jsf","tag-apache-tomee","tag-aplicacoes-web","tag-aprender-jsf","tag-ciclo-de-vida-jsf","tag-componentes-reutilizaveis","tag-desenvolvimento-java-2","tag-desenvolvimento-web","tag-faces-config-xml","tag-framework-java","tag-ide-para-jsf","tag-interface-de-usuario","tag-introducao-ao-jsf","tag-jakarta-ee","tag-java-ee","tag-javaserver-faces","tag-jsf","tag-logica-de-negocios","tag-managed-beans","tag-mvc","tag-programacao-java","tag-renderizacao-de-resposta","tag-servidor-jakarta-ee","tag-tomee","tag-tutorial-jsf","tag-validacao-de-dados","tag-wildfly","tag-xhtml"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.5 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Introdu\u00e7\u00e3o ao JavaServer Faces - Viciados em Aprender<\/title>\n<meta name=\"description\" content=\"Aprenda o b\u00e1sico de JavaServer Faces (JSF) nesta introdu\u00e7\u00e3o detalhada. 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