BAEL-1533 - Making a Spring MVC Form Remember Values

pom.xml

@@ -199,7 +199,8 @@
         <module>spring-ldap</module>
         <module>spring-mockito</module>
         <module>spring-mvc-email</module>
-        <module>spring-mvc-forms</module>
+        <module>spring-mvc-forms-jsp</module>
+        <module>spring-mvc-forms-thymeleaf</module>
         <module>spring-mvc-java</module>
         <module>spring-mvc-tiles</module>
         <module>spring-mvc-velocity</module>

spring-mvc-forms-jsp/pom.xml

@@ -6,9 +6,9 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.baeldung</groupId>
     <version>0.1-SNAPSHOT</version>
-    <artifactId>spring-mvc-forms</artifactId>
+    <artifactId>spring-mvc-forms-jsp</artifactId>
 
-    <name>spring-mvc-forms</name>
+    <name>spring-mvc-forms-jsp</name>
     <packaging>war</packaging>
 
     <parent>

spring-mvc-forms-thymeleaf/pom.xml

@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>com.baeldung</groupId>
+	<artifactId>spring-mvc-forms-thymeleaf</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<packaging>jar</packaging>
+
+	<name>spring-mvc-forms-thymeleaf</name>
+	<description>spring forms examples using thymeleaf</description>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.0.0.RELEASE</version>
+		<relativePath /> <!-- lookup parent from repository -->
+	</parent>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-thymeleaf</artifactId>
+		</dependency>
+
+		<!-- runtime and test scoped -->
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-devtools</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-surefire-plugin</artifactId>
+				<configuration>
+					<forkCount>3</forkCount>
+					<reuseForks>true</reuseForks>
+					<parallel>methods</parallel>
+					<useUnlimitedThreads>true</useUnlimitedThreads>
+					<excludes>
+						<exclude>**/*IntegrationTest.java</exclude>
+						<exclude>**/*LiveTest.java</exclude>
+					</excludes>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+	</properties>
+
+</project>

spring-mvc-forms-thymeleaf/src/main/java/com/baeldung/sessionattrs/Config.java

@@ -1,44 +1,44 @@
-package com.baeldung.sessionattrs;
-
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.context.annotation.Scope;
-import org.springframework.context.annotation.ScopedProxyMode;
-import org.springframework.core.Ordered;
-import org.springframework.web.context.WebApplicationContext;
-import org.springframework.web.servlet.config.annotation.EnableWebMvc;
-import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
-import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
-import org.thymeleaf.templatemode.TemplateMode;
-import org.thymeleaf.templateresolver.ClassLoaderTemplateResolver;
-import org.thymeleaf.templateresolver.ITemplateResolver;
-
-@EnableWebMvc
-@Configuration
-public class Config implements WebMvcConfigurer {
-
-    @Override
-    public void addViewControllers(ViewControllerRegistry registry) {
-        registry.addViewController("/").setViewName("index");
-        registry.setOrder(Ordered.HIGHEST_PRECEDENCE);
-    }
-
-    @Bean
-    @Scope(
-        value = WebApplicationContext.SCOPE_SESSION, 
-        proxyMode = ScopedProxyMode.TARGET_CLASS)
-    public TodoList todos() {
-        return new TodoList();
-    }
-
-    @Bean
-    public ITemplateResolver templateResolver() {
-        ClassLoaderTemplateResolver resolver 
-            = new ClassLoaderTemplateResolver();
-        resolver.setPrefix("templates/sessionattrs/");
-        resolver.setSuffix(".html");
-        resolver.setTemplateMode(TemplateMode.HTML);
-        resolver.setCharacterEncoding("UTF-8");
-        return resolver;
-    }
-}
+package com.baeldung.sessionattrs;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Scope;
+import org.springframework.context.annotation.ScopedProxyMode;
+import org.springframework.core.Ordered;
+import org.springframework.web.context.WebApplicationContext;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+import org.thymeleaf.templatemode.TemplateMode;
+import org.thymeleaf.templateresolver.ClassLoaderTemplateResolver;
+import org.thymeleaf.templateresolver.ITemplateResolver;
+
+@EnableWebMvc
+@Configuration
+public class Config implements WebMvcConfigurer {
+
+    @Override
+    public void addViewControllers(ViewControllerRegistry registry) {
+        registry.addViewController("/").setViewName("index");
+        registry.setOrder(Ordered.HIGHEST_PRECEDENCE);
+    }
+
+    @Bean
+    @Scope(
+        value = WebApplicationContext.SCOPE_SESSION, 
+        proxyMode = ScopedProxyMode.TARGET_CLASS)
+    public TodoList todos() {
+        return new TodoList();
+    }
+
+    @Bean
+    public ITemplateResolver templateResolver() {
+        ClassLoaderTemplateResolver resolver 
+            = new ClassLoaderTemplateResolver();
+        resolver.setPrefix("templates/sessionattrs/");
+        resolver.setSuffix(".html");
+        resolver.setTemplateMode(TemplateMode.HTML);
+        resolver.setCharacterEncoding("UTF-8");
+        return resolver;
+    }
+}

spring-mvc-forms-thymeleaf/src/main/java/com/baeldung/sessionattrs/TodoControllerWithScopedProxy.java

@@ -1,45 +1,45 @@
-package com.baeldung.sessionattrs;
-
-import java.time.LocalDateTime;
-
-import org.springframework.stereotype.Controller;
-import org.springframework.ui.Model;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.ModelAttribute;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-
-@Controller
-@RequestMapping("/scopedproxy")
-public class TodoControllerWithScopedProxy {
-
-    private TodoList todos;
-
-    public TodoControllerWithScopedProxy(TodoList todos) {
-        this.todos = todos;
-    }
-
-    @GetMapping("/form")
-    public String showForm(Model model) {
-        if (!todos.isEmpty()) {
-            model.addAttribute("todo", todos.peekLast());
-        } else {
-            model.addAttribute("todo", new TodoItem());
-        }
-
-        return "scopedproxyform";
-    }
-
-    @PostMapping("/form")
-    public String create(@ModelAttribute TodoItem todo) {
-        todo.setCreateDate(LocalDateTime.now());
-        todos.add(todo);
-        return "redirect:/scopedproxy/todos.html";
-    }
-
-    @GetMapping("/todos.html")
-    public String list(Model model) {
-        model.addAttribute("todos", todos);
-        return "scopedproxytodos";
-    }
-}
+package com.baeldung.sessionattrs;
+
+import java.time.LocalDateTime;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+@RequestMapping("/scopedproxy")
+public class TodoControllerWithScopedProxy {
+
+    private TodoList todos;
+
+    public TodoControllerWithScopedProxy(TodoList todos) {
+        this.todos = todos;
+    }
+
+    @GetMapping("/form")
+    public String showForm(Model model) {
+        if (!todos.isEmpty()) {
+            model.addAttribute("todo", todos.peekLast());
+        } else {
+            model.addAttribute("todo", new TodoItem());
+        }
+
+        return "scopedproxyform";
+    }
+
+    @PostMapping("/form")
+    public String create(@ModelAttribute TodoItem todo) {
+        todo.setCreateDate(LocalDateTime.now());
+        todos.add(todo);
+        return "redirect:/scopedproxy/todos.html";
+    }
+
+    @GetMapping("/todos.html")
+    public String list(Model model) {
+        model.addAttribute("todos", todos);
+        return "scopedproxytodos";
+    }
+}

spring-mvc-forms-thymeleaf/src/main/java/com/baeldung/sessionattrs/TodoControllerWithSessionAttributes.java

@@ -1,55 +1,55 @@
-package com.baeldung.sessionattrs;
-
-import java.time.LocalDateTime;
-
-import org.springframework.stereotype.Controller;
-import org.springframework.ui.Model;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.ModelAttribute;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.SessionAttributes;
-import org.springframework.web.servlet.mvc.support.RedirectAttributes;
-import org.springframework.web.servlet.view.RedirectView;
-
-@Controller
-@RequestMapping("/sessionattributes")
-@SessionAttributes("todos")
-public class TodoControllerWithSessionAttributes {
-
-    @GetMapping("/form")
-    public String showForm(
-            Model model,
-            @ModelAttribute("todos") TodoList todos) {
-        if (!todos.isEmpty()) {
-            model.addAttribute("todo", todos.peekLast());
-        } else {
-            model.addAttribute("todo", new TodoItem());
-        }
-        return "sessionattributesform";
-    }
-
-    @PostMapping("/form")
-    public RedirectView create(
-            @ModelAttribute TodoItem todo, 
-            @ModelAttribute("todos") TodoList todos, 
-            RedirectAttributes attributes) {
-        todo.setCreateDate(LocalDateTime.now());
-        todos.add(todo);
-        attributes.addFlashAttribute("todos", todos);
-        return new RedirectView("/sessionattributes/todos.html");
-    }
-
-    @GetMapping("/todos.html")
-    public String list(
-            Model model, 
-            @ModelAttribute("todos") TodoList todos) {
-        model.addAttribute("todos", todos);
-        return "sessionattributestodos";
-    }
-
-    @ModelAttribute("todos")
-    public TodoList todos() {
-        return new TodoList();
-    }
-}
+package com.baeldung.sessionattrs;
+
+import java.time.LocalDateTime;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.SessionAttributes;
+import org.springframework.web.servlet.mvc.support.RedirectAttributes;
+import org.springframework.web.servlet.view.RedirectView;
+
+@Controller
+@RequestMapping("/sessionattributes")
+@SessionAttributes("todos")
+public class TodoControllerWithSessionAttributes {
+
+    @GetMapping("/form")
+    public String showForm(
+            Model model,
+            @ModelAttribute("todos") TodoList todos) {
+        if (!todos.isEmpty()) {
+            model.addAttribute("todo", todos.peekLast());
+        } else {
+            model.addAttribute("todo", new TodoItem());
+        }
+        return "sessionattributesform";
+    }
+
+    @PostMapping("/form")
+    public RedirectView create(
+            @ModelAttribute TodoItem todo, 
+            @ModelAttribute("todos") TodoList todos, 
+            RedirectAttributes attributes) {
+        todo.setCreateDate(LocalDateTime.now());
+        todos.add(todo);
+        attributes.addFlashAttribute("todos", todos);
+        return new RedirectView("/sessionattributes/todos.html");
+    }
+
+    @GetMapping("/todos.html")
+    public String list(
+            Model model, 
+            @ModelAttribute("todos") TodoList todos) {
+        model.addAttribute("todos", todos);
+        return "sessionattributestodos";
+    }
+
+    @ModelAttribute("todos")
+    public TodoList todos() {
+        return new TodoList();
+    }
+}

spring-mvc-forms-thymeleaf/src/main/java/com/baeldung/sessionattrs/TodoItem.java

@@ -1,39 +1,39 @@
-package com.baeldung.sessionattrs;
-
-import java.time.LocalDateTime;
-
-public class TodoItem {
-
-    private String description;
-    private LocalDateTime createDate;
-
-    public TodoItem(String description, LocalDateTime createDate) {
-        this.description = description;
-        this.createDate = createDate;
-    }
-
-    public TodoItem() {
-        // default no arg constructor
-    }
-
-    public String getDescription() {
-        return description;
-    }
-
-    public void setDescription(String description) {
-        this.description = description;
-    }
-
-    public LocalDateTime getCreateDate() {
-        return createDate;
-    }
-
-    public void setCreateDate(LocalDateTime createDate) {
-        this.createDate = createDate;
-    }
-
-    @Override
-    public String toString() {
-        return "TodoItem [description=" + description + ", createDate=" + createDate + "]";
-    }
-}
+package com.baeldung.sessionattrs;
+
+import java.time.LocalDateTime;
+
+public class TodoItem {
+
+    private String description;
+    private LocalDateTime createDate;
+
+    public TodoItem(String description, LocalDateTime createDate) {
+        this.description = description;
+        this.createDate = createDate;
+    }
+
+    public TodoItem() {
+        // default no arg constructor
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public LocalDateTime getCreateDate() {
+        return createDate;
+    }
+
+    public void setCreateDate(LocalDateTime createDate) {
+        this.createDate = createDate;
+    }
+
+    @Override
+    public String toString() {
+        return "TodoItem [description=" + description + ", createDate=" + createDate + "]";
+    }
+}