{"id":48910,"date":"2025-09-17T18:14:33","date_gmt":"2025-09-17T18:14:33","guid":{"rendered":"https:\/\/becolve.com\/blog\/servicos-rest-o-que-sao\/"},"modified":"2025-09-17T18:14:33","modified_gmt":"2025-09-17T18:14:33","slug":"servicos-rest-o-que-sao","status":"publish","type":"blog","link":"https:\/\/becolve.com\/pt-pt\/blog\/servicos-rest-o-que-sao\/","title":{"rendered":"Servi\u00e7os REST: O que s\u00e3o?"},"content":{"rendered":"<p>Iniciamos aqui uma s\u00e9rie de <strong>3 artigos sobre os Servi\u00e7os REST<\/strong> (Representational State Transfer)<\/p>\n<p>Atualmente, existe uma grande quantidade de informa\u00e7\u00e3o na Internet que aumenta diariamente. A informa\u00e7\u00e3o cresce mais depressa do que pode ser visualizada. A Internet j\u00e1 n\u00e3o cont\u00e9m apenas informa\u00e7\u00e3o para os humanos consultarem, mas tamb\u00e9m para que sistemas autom\u00e1ticos possam trocar dados entre eles. Portanto, <strong>existe a necessidade de organizar a informa\u00e7\u00e3o na nuvem de forma<\/strong> a que os programas possam carregar, partilhar, procurar, encontrar e monitorizar a informa\u00e7\u00e3o de origens diversas, como dados de vendas, informa\u00e7\u00e3o financeira, campanhas de marketing, etc.   <\/p>\n<p>Surge a necessidade de procurar <strong>o modo de tornar f\u00e1ceis as coisas complexas<\/strong>. E essa \u00e9 a filosofia que est\u00e1 por detr\u00e1s dos <strong>Servi\u00e7os REST (Representational State Transfer)<\/strong>, que n\u00e3o s\u00e3o um padr\u00e3o, mas sim uma filosofia de organiza\u00e7\u00e3o das arquiteturas de sistemas em rede consistente em clientes e servidores. <\/p>\n<p>No mundo da automatiza\u00e7\u00e3o tamb\u00e9m existe uma tend\u00eancia para <strong>deixar dispon\u00edvel na nuvem informa\u00e7\u00e3o do processo<\/strong>, especialmente nos ambientes distribu\u00eddos geograficamente. Este pode ser o caso das SmartCities, que devem recolher medidas diversas mediante sensores distribu\u00eddos por toda uma cidade. Os sensores costumam ter um concentrador com capacidade para partilhar <strong>a informa\u00e7\u00e3o via Wifi ou GPRS<\/strong>, mas tamb\u00e9m est\u00e3o a surgir sensores inteligentes com a capacidade de comunica\u00e7\u00e3o direta por Internet, para partilhar as suas medidas ou para serem configurados remotamente. Embora estes sensores possam comunicar com <strong>protocolos simples como HTTP<\/strong>, n\u00e3o s\u00e3o capazes de executar c\u00f3digo personalizado, pelo que o modo de partilhar a informa\u00e7\u00e3o deve estar definido de maneira muito simples e atrav\u00e9s de protocolos padr\u00e3o.   <\/p>\n<p>Os Servi\u00e7os REST definem uns <strong>princ\u00edpios de arquitetura mediante os quais se podem definir uns servi\u00e7os Web focalizados nos recursos de um sistema<\/strong>, incluindo como aceder aos estados dos recursos.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-2634 size-full aligncenter\" src=\"https:\/\/becolve.com\/wp-content\/uploads\/2023\/04\/server.jpg\" alt=\"\" width=\"1080\" height=\"350\"><\/p>\n<p>Representational State Transfer (REST) est\u00e1 a ganhar um espa\u00e7o muito importante na Web como uma <strong>alternativa simples aos Servi\u00e7os Web baseados em SOAP<\/strong> (Simple Object Access Protocol) e <strong>WSDL<\/strong> (Web Services Description Language), j\u00e1 que s\u00e3o mais f\u00e1ceis de utilizar por ser um modelo que exp\u00f5e os servi\u00e7os como recursos.<br \/>\nREST foi descrito pela primeira vez no ano 2000 por <strong>Roy Fielding<\/strong> na sua disserta\u00e7\u00e3o sobre princ\u00edpios de arquitetura de sistemas em rede. <strong>Segundo a defini\u00e7\u00e3o de <strong>Fielding<\/strong>:<\/strong><\/p>\n<p>&#8220;Representational State Transfer is intended to evoke an image of how a well-designed Web application behaves: a network of web pages (a virtual state-machine), where the user progresses through an application by selecting links (state transitions), resulting in the next page (representing the next state of the application) being transferred to the user and rendered for their use.&#8221;<\/p>\n<p>Ou seja, <strong>REST permite o acesso a conte\u00fado na Web representado como o estado de um recurso<\/strong>, a partir do qual se pode evoluir ou transferir para outro recurso ou para outro estado do recurso.<\/p>\n<p><strong>Um recurso pode representar qualquer coisa que possa ser descrita pelo seu estado ou conte\u00fado<\/strong>, desde uma lista de material de uma empresa at\u00e9 ao detalhe de cada um dos materiais de dita lista. Um recurso \u00e9 uma entidade conceptual. A sua representa\u00e7\u00e3o \u00e9 a manifesta\u00e7\u00e3o concreta do recurso. Por exemplo, a Amazon ou o eBay t\u00eam todos os elementos \u00e0 venda como recursos dentro das suas p\u00e1ginas, ou seja, cada objeto \u00e0 venda pode ser acedido individualmente a partir de um cliente mediante servi\u00e7os REST.   <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Iniciamos aqui uma s\u00e9rie de 3 artigos sobre os Servi\u00e7os REST ((Representational State Transfer)<\/p>\n","protected":false},"author":31,"featured_media":48912,"menu_order":0,"template":"","categories":[977],"tags":[998,1038],"arquitectura":[1842],"area":[],"sector":[],"experto":[204],"weborigen":[136],"productos-tax":[87],"soluciones-tax":[213],"marcas-tax":[],"coauthors":[],"class_list":["post-48910","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-comunicacoes","tag-kepserverex","tag-rest","arquitectura-comunicacoes-industriais","experto-comunicacoes-industriais","weborigen-comunicacionesindustiraleslogitek-com","productos-tax-opc-router","soluciones-tax-communication-hub-pt-pt"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Servi\u00e7os REST: O que s\u00e3o? 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