{"id":12388,"date":"2021-10-06T12:23:08","date_gmt":"2021-10-06T10:23:08","guid":{"rendered":"https:\/\/www.espai.es\/blog\/?p=12388"},"modified":"2021-10-06T13:43:42","modified_gmt":"2021-10-06T11:43:42","slug":"como-usar-datos-de-excel-desde-java","status":"publish","type":"post","link":"https:\/\/www.espai.es\/blog\/2021\/10\/como-usar-datos-de-excel-desde-java\/","title":{"rendered":"C\u00f3mo usar datos de Excel desde Java"},"content":{"rendered":"

C\u00f3mo usar datos de Excel<\/a> desde Java<\/h2>\n

 <\/p>\n

Hola y bienvenidos a un nuevo art\u00edculo del blog de Espai. Hoy vamos a ver C\u00f3mo usar datos de Excel<\/a> desde Java. Excel tiene una funci\u00f3n bastante desconocida, que es la posibilidad de guardar los datos en formato CSV<\/a>. CSV es un formato de texto (comma separated values, en ingl\u00e9s) que hace justamente eso: Separar nuestros datos de Excel usando comas. Lo veremos mejor con un ejemplo:<\/p>\n

 <\/p>\n

\"C\u00f3mo<\/p>\n

 <\/p>\n

A la izquierda pod\u00e9is ver un Excel \u00abpuro y duro\u00bb, y a la derecha el mismo en formato CSV. Como se puede apreciar, es texto plano.<\/p>\n

 <\/p>\n

En java es muy f\u00e1cil manejar ficheros de texto, vamos a escribir un programa muy corto para acceder a estos valores:<\/p>\n

 <\/p>\n

\"C\u00f3mo<\/p>\n

 <\/p>\n

A la derecha tenemos el c\u00f3digo para acceder a este fichero CSV, y a la izquierda el resultado.<\/p>\n

La parte m\u00e1s importante del programa es la l\u00ednea 14, 15 y la 17. De momento, solo tenemos el texto \u00abtal cual\u00bb sin separar, por l\u00edneas. Si queremos dividir este contenido para poderlo utilizar, solo hay que a\u00f1adir un par de l\u00edneas de c\u00f3digo:<\/p>\n

 <\/p>\n

\"C\u00f3mo<\/p>\n

 <\/p>\n

Ahora ya podemos interpretar el contenido de cada casilla. Para terminar nuestro ejemplo, vamos a filtrar los valores para que solo aparezcan los mayores (o iguales) a 100:<\/p>\n

 <\/p>\n

\"C\u00f3mo<\/p>\n

 <\/p>\n

Como veis no es dif\u00edcil acceder a nuestros datos en Excel si aprovechamos el formato CSV. Ni que decir tiene que otros lenguajes de programaci\u00f3n son perfectamente v\u00e1lidos, en realidad Javascript<\/a>, PHP<\/a>, C#<\/a>… Gracias a la simplicidad de este formato es accesible de manera universal.<\/p>\n

 <\/p>\n

Os dejo aqu\u00ed<\/a> un enlace con el fichero CSV de ejemplo y el c\u00f3digo fuente. Est\u00e1 comprimido en formato Winrar, si no lo ten\u00e9is instalado\u00a0 pod\u00e9is encontrarlo aqu\u00ed<\/a>.<\/p>\n

Y hasta aqu\u00ed el art\u00edculo de hoy, cualquier pregunta que teng\u00e1is no dud\u00e9is en comentar.<\/p>\n

 <\/p>\n

Un saludo<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00f3mo usar datos de Excel desde Java   Hola y bienvenidos a un nuevo art\u00edculo del blog de Espai. Hoy vamos a ver C\u00f3mo usar datos de Excel desde Java. Excel tiene una funci\u00f3n bastante desconocida, que es la posibilidad de guardar los datos en…<\/p>\n","protected":false},"author":3,"featured_media":12406,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_ef_editorial_meta_date_first-draft-date":"","_ef_editorial_meta_paragraph_assignment":"","_ef_editorial_meta_checkbox_needs-photo":"","_ef_editorial_meta_number_word-count":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[771,5,1],"tags":[295,220,89],"class_list":["post-12388","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ofimatica","category-programacion","category-sin-categoria","tag-excel","tag-java","tag-programacion-2"],"yoast_head":"\nC\u00f3mo usar datos de Excel desde Java - 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