spring template engines (#2326)

* spring template engines

* formatting

spring-mvc-simple/src/main/java/com/baeldung/spring/configuration/ApplicationConfiguration.java

@@ -12,7 +12,7 @@ import org.springframework.web.servlet.view.InternalResourceViewResolver;
 
 @Configuration
 @EnableWebMvc
-@ComponentScan(basePackages = "com.baeldung.springmvcforms")
+@ComponentScan(basePackages = { "com.baeldung.springmvcforms", "com.baeldung.spring.controller", "com.baeldung.spring.validator" })
 class ApplicationConfiguration extends WebMvcConfigurerAdapter {
 
     @Override

spring-mvc-simple/src/main/java/com/baeldung/spring/configuration/FreemarkerConfiguration.java

@@ -0,0 +1,29 @@
+package com.baeldung.spring.configuration;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;
+import org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver;
+
+@Configuration
+@EnableWebMvc
+@ComponentScan(basePackages = { "com.baeldung.springmvcforms", "com.baeldung.spring.controller", "com.baeldung.spring.validator" })
+public class FreemarkerConfiguration {
+    @Bean 
+    public FreeMarkerConfigurer freemarkerConfig() { 
+        FreeMarkerConfigurer freeMarkerConfigurer = new FreeMarkerConfigurer(); 
+        freeMarkerConfigurer.setTemplateLoaderPath("/WEB-INF/views/");
+        return freeMarkerConfigurer; 
+    }
+    
+    @Bean 
+    public FreeMarkerViewResolver freemarkerViewResolver() { 
+        FreeMarkerViewResolver resolver = new FreeMarkerViewResolver(); 
+        resolver.setCache(true); 
+        resolver.setPrefix(""); 
+        resolver.setSuffix(".ftl"); 
+        return resolver; 
+    }
+}

spring-mvc-simple/src/main/java/com/baeldung/spring/configuration/GroovyConfiguration.java

@@ -0,0 +1,29 @@
+package com.baeldung.spring.configuration;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.view.groovy.GroovyMarkupConfigurer;
+import org.springframework.web.servlet.view.groovy.GroovyMarkupViewResolver;
+
+@Configuration
+@EnableWebMvc
+@ComponentScan(basePackages = { "com.baeldung.springmvcforms", "com.baeldung.spring.controller", "com.baeldung.spring.validator" })
+public class GroovyConfiguration {
+    
+    @Bean
+    public GroovyMarkupConfigurer groovyMarkupConfigurer() {
+        GroovyMarkupConfigurer configurer = new GroovyMarkupConfigurer();
+        configurer.setResourceLoaderPath("/WEB-INF/views/");
+        return configurer;
+    }
+    
+    @Bean
+    public GroovyMarkupViewResolver thymeleafViewResolver() {
+        GroovyMarkupViewResolver viewResolver = new GroovyMarkupViewResolver();
+        viewResolver.setSuffix(".tpl");
+        return viewResolver;
+    }
+
+}

spring-mvc-simple/src/main/java/com/baeldung/spring/configuration/ThymeleafConfiguration.java

@@ -0,0 +1,38 @@
+package com.baeldung.spring.configuration;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.thymeleaf.spring4.SpringTemplateEngine;
+import org.thymeleaf.spring4.templateresolver.SpringResourceTemplateResolver;
+import org.thymeleaf.spring4.view.ThymeleafViewResolver;
+
+@Configuration
+@EnableWebMvc
+@ComponentScan(basePackages = { "com.baeldung.springmvcforms", "com.baeldung.spring.controller", "com.baeldung.spring.validator" })
+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;
+    }
+
+    @Bean
+    public ThymeleafViewResolver thymeleafViewResolver() {
+        ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
+        viewResolver.setTemplateEngine(templateEngine());
+        return viewResolver;
+    }
+
+}

spring-mvc-simple/src/main/java/com/baeldung/spring/configuration/WebInitializer.java

@@ -15,6 +15,9 @@ public class WebInitializer implements WebApplicationInitializer {
 
 		AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
 		ctx.register(ApplicationConfiguration.class);
+		//ctx.register(ThymeleafConfiguration.class);
+		//ctx.register(FreemarkerConfiguration.class);
+		//ctx.register(GroovyConfiguration.class);
 		ctx.setServletContext(container);
 
 		// Manage the lifecycle of the root application context

spring-mvc-simple/src/main/java/com/baeldung/spring/controller/UserController.java

@@ -0,0 +1,44 @@
+package com.baeldung.spring.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+import com.baeldung.spring.domain.User;
+
+@Controller
+public class UserController {
+
+    @GetMapping("/registration")
+    public String getRegistration(Model model) {
+        model.addAttribute("user", new User());
+        return "registration";
+    }
+
+    @GetMapping("/registration-thymeleaf")
+    public String getRegistrationThymeleaf(Model model) {
+        model.addAttribute("user", new User());
+        return "registration-thymeleaf";
+    }
+    
+    @GetMapping("/registration-freemarker")
+    public String getRegistrationFreemarker(Model model) {
+        model.addAttribute("user", new User());
+        return "registration-freemarker";
+    }
+    
+    @GetMapping("/registration-groovy")
+    public String getRegistrationGroovy(Model model) {
+        model.addAttribute("user", new User());
+        return "registration-groovy";
+    }
+    
+    @PostMapping("/register")
+    @ResponseBody
+    public void register(User user){
+        System.out.println(user.getEmail());
+    }
+
+}

spring-mvc-simple/src/main/java/com/baeldung/spring/domain/User.java

@@ -0,0 +1,23 @@
+package com.baeldung.spring.domain;
+
+public class User {
+    private String email;
+    private String password;
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+}