Reja: Template engine
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9-Template engine
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- ThymeleafViewResolver (); viewResolver.setTemplateEngine(templateEngine()); return
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dependency
> < groupId >org.thymeleafgroupId > < artifactId >thymeleafartifactId > < version >3.0.11.RELEASEversion > dependency > < dependency > < groupId >org.thymeleafgroupId > < artifactId >thymeleaf-spring5artifactId > < version >3.0.11.RELEASEversion > dependency > SpringTemplateEngine beanni talab qiladigan konfiguratsiyani, shuningdek view fayllari joylashuvi va turini belgilaydigan TemplateResolver beanni qo`shishimiz kerak. SpringResourceTemplateResolver Springning manbalarni aniqlash mexanizmi bilan birlashtirilgan: Thymeleaf Spring Configuration @Configuration @EnableWebMvc public class ThymeleafConfiguration { @Bean public SpringTemplateEngine templateEngine () { SpringTemplateEngine templateEngine = new SpringTemplateEngine (); templateEngine.setTemplateResolver(thymeleafTemplateResolver()); return templateEngine; } @Bean public SpringResourceTemplateResolver thymeleafTemplateResolver () { SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver (); templateResolver.setPrefix( "/WEB-INF/views/" ); templateResolver.setSuffix( ".html" ); templateResolver.setTemplateMode( "HTML5" ); return templateResolver; } } Bundan tashqari, bizga ThymeleafViewResolver turidagi ViewResolver bean kerak : @Bean public ThymeleafViewResolver thymeleafViewResolver () { ThymeleafViewResolver viewResolver = new ThymeleafViewResolver (); viewResolver.setTemplateEngine(templateEngine()); return viewResolver; } Thymeleaf Spring Configuration Thymeleaf Templates < html > < head > < meta charset= "ISO-8859-1" /> < title >User Registrationtitle > head > < body > < form action= "#" th:action= "@{/register}" th:object= "${user}" method= "post" > Email:< input type= "text" th:field= "*{email}" /> Password:< input type= "password" th:field= "*{password}" /> < input type= "submit" value= "Submit" /> form > body > html > Endi biz HTML faylni WEB-INF/views manziliga qo`shishimiz mumkin: Thymeleaf Thymeleaf Thymeleaf shablonlari sintaksis jihatidan HTML shablonlariga juda o`xshash. Spring ilovasida Thymeleaf dan foydalanishda mavjud bo`lgan ba`zi xususiyatlar : • shakllarning xatti-harakatini aniqlashni qo`llab-quvvatlash • ma`lumotlar modellariga shakl kiritishlarini bog`lash • shakl kiritish uchun tekshirish • xabar manbalaridan qiymatlarni ko`rsatish • shablon parchalarini ko`rsatish Thymeleaf shablonlaridan foydalanish haqida ko`proq o`qishingiz mumkin Thymeleaf in Spring MVC . Thymeleaf Templates Thymeleaf Spring boot Dependencies Spring Boot spring-boot-starter-thymeleaf dependency qo`shish orqali Thymeleaf uchun avtomatik konfiguratsiyani ta`minlaydi. Hech qanday aniq konfiguratsiya shart emas. Odatda, HTML fayllari resources/templates joylashgan joyga joylashtirilishi kerak. < dependency > < groupId >org.springframework.bootgroupId > < artifactId >spring-boot-starter-thymeleafartifactId > < version >2.5.6version > dependency > Freemaker FreeMarker - bu Apache Software Foundation tomonidan yaratilgan Javaga asoslangan shablon mexanizmi. U web-sahifalarni yaratish uchun ishlatilishi mumkin, shuningdek, manba kodi, XML fayllari, konfiguratsiya fayllari, elektron pochta xabarlari va boshqa matnga asoslangan formatlardan tashkil topishi mumkin. Freemaker Maven Dependencies Loyihamizda shablonlardan foydalanishni boshlash uchun bizga freemarker dependency va Spring integratsiyasi uchun bizga Spring kontekstiga bog`liqlik kerak: < dependency > < groupId >org.freemarkergroupId > < artifactId >freemarkerartifactId > < version >2.3.23version > dependency > < dependency > < groupId >org.springframeworkgroupId > < artifactId >spring-context-supportartifactId > < version >5.2.8.RELEASEversion > dependency > Freemaker Spring Configuration FreeMarkerni Spring MVC bilan integratsiya qilish template fayllari joylashuvini belgilaydigan FreemarkerConfigurer beanni aniqlashni talab qiladi: @Configuration @EnableWebMvc public class FreemarkerConfiguration { @Bean public FreeMarkerConfigurer freemarkerConfig () { FreeMarkerConfigurer freeMarkerConfigurer = new FreeMarkerConfigurer (); freeMarkerConfigurer.setTemplateLoaderPath( "/WEB-INF/views/" ); return freeMarkerConfigurer; } } Freemaker Spring Configuration Keyin, FreeMarkerViewResolver turidagi tegishli ViewResolver beanni aniqlashimiz kerak : @Bean public FreeMarkerViewResolver freemarkerViewResolver () { FreeMarkerViewResolver resolver = new FreeMarkerViewResolver (); resolver.setCache( true ); resolver.setPrefix( "" ); resolver.setSuffix( ".ftl" ); return resolver; } FreeMarker Templates WEB - INF/views manzilida FreeMarker yordamida HTML shablonlarini yaratishimiz mumkin : <#import "/spring.ftl" as spring/> < html > < head > < meta charset= "ISO-8859-1" /> < title >User Registrationtitle > head > < body > < form action= "register" method= "post" > <@spring.bind path="user" /> Email: <@spring.formInput "user.email"/> Password: <@spring.formPasswordInput "user.password"/> < input type= "submit" value= "Submit" /> form > body > html > Yuqoridagi misolda biz FreeMarker da shakllar bilan ishlash uchun Spring tomonidan belgilangan makrolar to`plamini import qildik , shu jumladan ma`lumotlar modellari uchun shakl kiritishlarini bog`lash. Bundan tashqari, FreeMarker shablon tili to`plamlar, oqimlarni boshqarish tuzilmalari, mantiqiy operatorlar, formatlash va tahlil qilish satrlari, raqamlar va boshqa ko`plab funksiyalar bilan ishlash uchun juda ko`p teglar, direktivalar va ifodalarni o`z ichiga oladi. FreeMarker Spring Boot ilovasida biz spring-boot-starter-freemarker dependencydan foydalanib, kerakli konfiguratsiyani soddalashtirishimiz mumkin. Ushbu dependency kerakli avtomatik konfiguratsiyani qo`shadi. Biz qilishimiz kerak bo`lgan narsa template fayllarimizni resources/templates jildiga joylashtirishdan boshlashdir. < dependency > < groupId >org.springframework.bootgroupId > < artifactId >spring-boot-starter-freemarkerartifactId > < version >2.5.6version > dependency > FreeMarker in Spring Boot Velocity Velocity - bu Javaga asoslangan template engine hisoblanadi. Bu MVC arxitekturasida view komponenti sifatida foydalanish uchun mo`ljallangan ochiq manbali web-framework bo`lib, u JSP kabi ba`zi mavjud texnologiyalarga muqobil hisoblanadi. Velocity XML fayllari, SQL, PostScript va boshqa matnga asoslangan formatlarni yaratish uchun ishlatilishi mumkin. Velocity qanday ishlaydi? Velocity ning asosiy klassi VelocityEngine hisoblanadi . U ma`lumotlar modeli va tezlik shablonidan foydalangan holda o`qish, tahlil qilish va tarkibni yaratishning butun jarayonini tartibga soladi. Oddiy qilib aytganda, har qanday odatiy tezlik ilovasi uchun amal qilishimiz kerak bo`lgan qadamlar quyidagilar: • Velocity Engineni ishga tushirish • Templateni o`qish • Ma`lumotlar modelini konteks ob`ektiga qo`yish • Templateni konteks ma`lumotlari bilan birlashtirish va ko`rinishni yaratish Velocity Apache Velocity - birinchi marta 2001-yil aprel oyida chiqarilgan, Javaga asoslangan template engine bo`lib , Java kodida belgilangan ob`ektlarga havola qilish uchun template tilini taqdim etadi. Bu web-ilovada taqdimot darajasi va biznes darajalari o`rtasida aniq ajratishni ta`minlashga qaratilgan ( MVC dizayn namunasi). Velocity ochiq kodli dasturiy ta`minot loyihasi bo`lib, Apache Software Foundation tomonidan joylashtirilgan . U Apache litsenziyasi ostida chiqariladi. Velocity |
