Adding strings for all other languages

- Added WebConfiguration class to change language using url param
- Added text from messages to html files wherever required
- Added String to all other languages

Closes #1854

Signed-off-by: anizmo <potdar.anuj@gmail.com>

src/main/java/org/springframework/samples/petclinic/owner/Owner.java

@@ -57,7 +57,7 @@ public class Owner extends Person {
 
 	@Column(name = "telephone")
 	@NotBlank
-	@Pattern(regexp = "\\d{10}", message = "Telephone must be a 10-digit number")
+	@Pattern(regexp = "\\d{10}", message = "{telephone.invalid}")
 	private String telephone;
 
 	@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)

src/main/java/org/springframework/samples/petclinic/system/WebConfiguration.java

@@ -0,0 +1,60 @@
+package org.springframework.samples.petclinic.system;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.LocaleResolver;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
+import org.springframework.web.servlet.i18n.SessionLocaleResolver;
+
+import java.util.Locale;
+
+/**
+ * Configures internationalization (i18n) support for the application.
+ *
+ * <p>
+ * Handles loading language-specific messages, tracking the user's language, and allowing
+ * language changes via the URL parameter (e.g., <code>?lang=de</code>).
+ * </p>
+ *
+ * @author Anuj Ashok Potdar
+ */
+@Configuration
+@SuppressWarnings("unused")
+public class WebConfiguration implements WebMvcConfigurer {
+
+	/**
+	 * Uses session storage to remember the user’s language setting across requests.
+	 * Defaults to English if nothing is specified.
+	 * @return session-based {@link LocaleResolver}
+	 */
+	@Bean
+	public LocaleResolver localeResolver() {
+		SessionLocaleResolver resolver = new SessionLocaleResolver();
+		resolver.setDefaultLocale(Locale.ENGLISH);
+		return resolver;
+	}
+
+	/**
+	 * Allows the app to switch languages using a URL parameter like
+	 * <code>?lang=es</code>.
+	 * @return a {@link LocaleChangeInterceptor} that handles the change
+	 */
+	@Bean
+	public LocaleChangeInterceptor localeChangeInterceptor() {
+		LocaleChangeInterceptor interceptor = new LocaleChangeInterceptor();
+		interceptor.setParamName("lang");
+		return interceptor;
+	}
+
+	/**
+	 * Registers the locale change interceptor so it can run on each request.
+	 * @param registry where interceptors are added
+	 */
+	@Override
+	public void addInterceptors(InterceptorRegistry registry) {
+		registry.addInterceptor(localeChangeInterceptor());
+	}
+
+}

src/main/resources/messages/messages.properties

@@ -6,3 +6,28 @@ nonNumeric=must be all numeric
 duplicateFormSubmission=Duplicate form submission is not allowed
 typeMismatch.date=invalid date
 typeMismatch.birthDate=invalid date
+owner=Owner
+firstName=First Name
+lastName=Last Name
+address=Address
+city=City
+telephone=Telephone
+owners=Owners
+addOwner=Add Owner
+findOwner=Find Owner
+findOwners=Find Owners
+updateOwner=Update Owner
+vets=Veterinarians
+name=Name
+specialties=Specialties
+none=none
+pages=pages
+first=First
+next=Next
+previous=Previous
+last=Last
+somethingHappened=Something happened...
+pets=Pets
+home=Home
+error=Error
+telephone.invalid=Telephone must be a 10-digit number

src/main/resources/messages/messages_de.properties

@@ -6,4 +6,28 @@ nonNumeric=darf nur numerisch sein
 duplicateFormSubmission=Wiederholtes Absenden des Formulars ist nicht erlaubt
 typeMismatch.date=ung<EFBFBD>ltiges Datum
 typeMismatch.birthDate=ung<EFBFBD>ltiges Datum
-
+owner=Besitzer
+firstName=Vorname
+lastName=Nachname
+address=Adresse
+city=Stadt
+telephone=Telefon
+owners=Besitzer
+addOwner=Besitzer hinzufügen
+findOwner=Besitzer finden
+findOwners=Besitzer suchen
+updateOwner=Besitzer aktualisieren
+vets=Tierärzte
+name=Name
+specialties=Fachgebiete
+none=keine
+pages=Seiten
+first=Erste
+next=Nächste
+previous=Vorherige
+last=Letzte
+somethingHappened=Etwas ist passiert...
+pets=Haustiere
+home=Startseite
+error=Fehler
+telephone.invalid=Telefonnummer muss aus 10 Ziffern bestehen

src/main/resources/messages/messages_es.properties

@@ -6,4 +6,28 @@ nonNumeric=Sólo debe contener numeros
 duplicateFormSubmission=No se permite el envío de formularios duplicados
 typeMismatch.date=Fecha invalida
 typeMismatch.birthDate=Fecha invalida
-
+owner=Propietario
+firstName=Nombre
+lastName=Apellido
+address=Dirección
+city=Ciudad
+telephone=Teléfono
+owners=Propietarios
+addOwner=Añadir propietario
+findOwner=Buscar propietario
+findOwners=Buscar propietarios
+updateOwner=Actualizar propietario
+vets=Veterinarios
+name=Nombre
+specialties=Especialidades
+none=ninguno
+pages=páginas
+first=Primero
+next=Siguiente
+previous=Anterior
+last=Último
+somethingHappened=Algo pasó...
+pets=Mascotas
+home=Inicio
+error=Error
+telephone.invalid=El número de teléfono debe tener 10 dígitos

src/main/resources/messages/messages_fa.properties

@@ -6,4 +6,28 @@ nonNumeric=باید عددی باشد
 duplicateFormSubmission=ارسال تکراری فرم مجاز نیست
 typeMismatch.date=تاریخ نامعتبر
 typeMismatch.birthDate=تاریخ تولد نامعتبر
-
+owner=مالک
+firstName=نام
+lastName=نام خانوادگی
+address=آدرس
+city=شهر
+telephone=تلفن
+owners=مالکان
+addOwner=افزودن مالک
+findOwner=یافتن مالک
+findOwners=یافتن مالکان
+updateOwner=ویرایش مالک
+vets=دامپزشکان
+name=نام
+specialties=تخصص‌ها
+none=هیچ‌کدام
+pages=صفحات
+first=اول
+next=بعدی
+previous=قبلی
+last=آخر
+somethingHappened=مشکلی پیش آمد...
+pets=حیوانات خانگی
+home=خانه
+error=خطا
+telephone.invalid=شماره تلفن باید ۱۰ رقمی باشد

src/main/resources/messages/messages_ko.properties

@@ -6,3 +6,28 @@ nonNumeric=모두 숫자로 입력해야 합니다
 duplicateFormSubmission=중복 제출은 허용되지 않습니다
 typeMismatch.date=잘못된 날짜입니다
 typeMismatch.birthDate=잘못된 날짜입니다
+owner=소유자
+firstName=이름
+lastName=성
+address=주소
+city=도시
+telephone=전화번호
+owners=소유자 목록
+addOwner=소유자 추가
+findOwner=소유자 찾기
+findOwners=소유자들 찾기
+updateOwner=소유자 수정
+vets=수의사
+name=이름
+specialties=전문 분야
+none=없음
+pages=페이지
+first=첫 번째
+next=다음
+previous=이전
+last=마지막
+somethingHappened=문제가 발생했습니다...
+pets=반려동물
+home=홈
+error=오류
+telephone.invalid=전화번호는 10자리 숫자여야 합니다

src/main/resources/messages/messages_pt.properties

@@ -6,3 +6,28 @@ nonNumeric=Deve ser tudo numerico
 duplicateFormSubmission=O envio duplicado de formulario nao e permitido
 typeMismatch.date=Data invalida
 typeMismatch.birthDate=Data de nascimento invalida
+owner=Proprietário
+firstName=Primeiro Nome
+lastName=Sobrenome
+address=Endereço
+city=Cidade
+telephone=Telefone
+owners=Proprietários
+addOwner=Adicionar proprietário
+findOwner=Encontrar proprietário
+findOwners=Encontrar proprietários
+updateOwner=Atualizar proprietário
+vets=Veterinários
+name=Nome
+specialties=Especialidades
+none=nenhum
+pages=páginas
+first=Primeiro
+next=Próximo
+previous=Anterior
+last=Último
+somethingHappened=Algo aconteceu...
+pets=Animais de estimação
+home=Início
+error=Erro
+telephone.invalid=O número de telefone deve conter 10 dígitos

src/main/resources/messages/messages_ru.properties

@@ -6,4 +6,28 @@ nonNumeric=должно быть все числовое значение
 duplicateFormSubmission=Дублирование формы не допускается
 typeMismatch.date=неправильная даные
 typeMismatch.birthDate=неправильная дата
-
+owner=Владелец
+firstName=Имя
+lastName=Фамилия
+address=Адрес
+city=Город
+telephone=Телефон
+owners=Владельцы
+addOwner=Добавить владельца
+findOwner=Найти владельца
+findOwners=Найти владельцев
+updateOwner=Обновить владельца
+vets=Ветеринары
+name=Имя
+specialties=Специальности
+none=нет
+pages=страницы
+first=Первый
+next=Следующий
+previous=Предыдущий
+last=Последний
+somethingHappened=Что-то пошло не так...
+pets=Питомцы
+home=Главная
+error=Ошибка
+telephone.invalid=Телефон должен содержать 10 цифр

src/main/resources/messages/messages_tr.properties

@@ -6,4 +6,28 @@ nonNumeric=sadece sayısal olmalıdır
 duplicateFormSubmission=Formun tekrar gönderilmesine izin verilmez
 typeMismatch.date=geçersiz tarih
 typeMismatch.birthDate=geçersiz tarih
-
+owner=Sahip
+firstName=Ad
+lastName=Soyad
+address=Adres
+city=Şehir
+telephone=Telefon
+owners=Sahipler
+addOwner=Sahip Ekle
+findOwner=Sahip Bul
+findOwners=Sahipleri Bul
+updateOwner=Sahip Güncelle
+vets=Veterinerler
+name=İsim
+specialties=Uzmanlıklar
+none=yok
+pages=sayfalar
+first=İlk
+next=Sonraki
+previous=Önceki
+last=Son
+somethingHappened=Bir şey oldu...
+pets=Evcil Hayvanlar
+home=Ana Sayfa
+error=Hata
+telephone.invalid=Telefon numarası 10 basamaklı olmalıdır

src/main/resources/templates/error.html

@@ -4,7 +4,7 @@
 
   <body>
     <img src="../static/resources/images/pets.png" th:src="@{/resources/images/pets.png}"/>
-    <h2>Something happened...</h2>
+    <h2 th:text="#{somethingHappened}">Something happened...</h2>
     <p th:text="${message}">Exception message</p>
   </body>
 

src/main/resources/templates/fragments/layout.html

@@ -45,25 +45,25 @@
 
         <ul class="nav navbar-nav me-auto">
 
-          <li th:replace="~{::menuItem ('/','home','home page','home','Home')}">
+          <li th:replace="~{::menuItem ('/','home','home page','home',#{home})}">
             <span class="fa fa-home" aria-hidden="true"></span>
-            <span>Home</span>
+            <span th:text="#{home}">Home</span>
           </li>
 
-          <li th:replace="~{::menuItem ('/owners/find','owners','find owners','search','Find owners')}">
+          <li th:replace="~{::menuItem ('/owners/find','owners','find owners','search',#{findOwners})}">
             <span class="fa fa-search" aria-hidden="true"></span>
-            <span>Find owners</span>
+            <span th:text="#{findOwners}">Find owners</span>
           </li>
 
-          <li th:replace="~{::menuItem ('/vets.html','vets','veterinarians','th-list','Veterinarians')}">
+          <li th:replace="~{::menuItem ('/vets.html','vets','veterinarians','th-list',#{vets})}">
             <span class="fa fa-th-list" aria-hidden="true"></span>
-            <span>Veterinarians</span>
+            <span th:text="#{vets}">Veterinarians</span>
           </li>
 
           <li
-            th:replace="~{::menuItem ('/oups','error','trigger a RuntimeException to see how it is handled','exclamation-triangle','Error')}">
+            th:replace="~{::menuItem ('/oups','error','trigger a RuntimeException to see how it is handled','exclamation-triangle',#{error})}">
             <span class="fa exclamation-triangle" aria-hidden="true"></span>
-            <span>Error</span>
+            <span th:text="#{error}">Error</span>
           </li>
 
         </ul>

src/main/resources/templates/owners/createOrUpdateOwnerForm.html

@@ -3,24 +3,24 @@
 
 <body>
 
-  <h2>Owner</h2>
+  <h2 th:text="#{owner}">Owner</h2>
   <form th:object="${owner}" class="form-horizontal" id="add-owner-form" method="post">
     <div class="form-group has-feedback">
       <input
-        th:replace="~{fragments/inputField :: input ('First Name', 'firstName', 'text')}" />
+        th:replace="~{fragments/inputField :: input (#{firstName}, 'firstName', 'text')}" />
       <input
-        th:replace="~{fragments/inputField :: input ('Last Name', 'lastName', 'text')}" />
+        th:replace="~{fragments/inputField :: input (#{lastName}, 'lastName', 'text')}" />
       <input
-        th:replace="~{fragments/inputField :: input ('Address', 'address', 'text')}" />
+        th:replace="~{fragments/inputField :: input (#{address}, 'address', 'text')}" />
       <input
-        th:replace="~{fragments/inputField :: input ('City', 'city', 'text')}" />
+        th:replace="~{fragments/inputField :: input (#{city}, 'city', 'text')}" />
       <input
-        th:replace="~{fragments/inputField :: input ('Telephone', 'telephone', 'text')}" />
+        th:replace="~{fragments/inputField :: input (#{telephone}, 'telephone', 'text')}" />
     </div>
     <div class="form-group">
       <div class="col-sm-offset-2 col-sm-10">
         <button
-          th:with="text=${owner['new']} ? 'Add Owner' : 'Update Owner'"
+          th:with="text=${owner['new']} ? #{addOwner} : #{updateOwner}"
           class="btn btn-primary" type="submit" th:text="${text}">Add
           Owner</button>
       </div>

src/main/resources/templates/owners/findOwners.html

@@ -3,13 +3,13 @@
 
 <body>
 
-  <h2>Find Owners</h2>
+  <h2 th:text="#{findOwners}">Find Owners</h2>
 
   <form th:object="${owner}" th:action="@{/owners}" method="get"
     class="form-horizontal" id="search-owner-form">
     <div class="form-group">
       <div class="control-group" id="lastNameGroup">
-        <label class="col-sm-2 control-label">Last name </label>
+        <label class="col-sm-2 control-label" th:text="#{lastName}">Last name </label>
         <div class="col-sm-10">
           <input class="form-control" th:field="*{lastName}" size="30"
             maxlength="80" /> <span class="help-inline"><div
@@ -21,12 +21,11 @@
     </div>
     <div class="form-group">
       <div class="col-sm-offset-2 col-sm-10">
-        <button type="submit" class="btn btn-primary">Find
-          Owner</button>
+        <button type="submit" class="btn btn-primary" th:text="#{findOwner}">Find Owner</button>
       </div>
     </div>
 
-    <a class="btn btn-primary" th:href="@{/owners/new}">Add Owner</a>
+    <a class="btn btn-primary" th:href="@{/owners/new}" th:text="#{addOwner}">Add Owner</a>
 
   </form>
 

src/main/resources/templates/owners/ownersList.html

@@ -4,16 +4,16 @@
 
 <body>
 
-<h2>Owners</h2>
+<h2 th:text="#{owners}">Owners</h2>
 
 <table id="owners" class="table table-striped">
   <thead>
   <tr>
-    <th style="width: 150px;">Name</th>
-    <th style="width: 200px;">Address</th>
-    <th>City</th>
-    <th style="width: 120px">Telephone</th>
-    <th>Pets</th>
+    <th th:text="#{name}" style="width: 150px;">Name</th>
+    <th th:text="#{address}" style="width: 200px;">Address</th>
+    <th th:text="#{city}">City</th>
+    <th th:text="#{telephone}" style="width: 120px">Telephone</th>
+    <th th:text="#{pets}">Pets</th>
   </tr>
   </thead>
   <tbody>
@@ -29,7 +29,7 @@
   </tbody>
 </table>
 <div th:if="${totalPages > 1}">
-  <span>Pages:</span>
+  <span th:text="#{pages}">Pages:</span>
   <span>[</span>
   <span th:each="i: ${#numbers.sequence(1, totalPages)}">
       <a th:if="${currentPage != i}" th:href="@{'/owners?page=' + ${i}}">[[${i}]]</a>

src/main/resources/templates/vets/vetList.html

@@ -5,13 +5,13 @@
 
 <body>
 
-<h2>Veterinarians</h2>
+<h2 th:text="#{vets}">Veterinarians</h2>
 
 <table id="vets" class="table table-striped">
   <thead>
   <tr>
-    <th>Name</th>
-    <th>Specialties</th>
+    <th th:text="#{name}">Name</th>
+    <th th:text="#{specialties}">Specialties</th>
   </tr>
   </thead>
   <tbody>
@@ -19,13 +19,13 @@
     <td th:text="${vet.firstName + ' ' + vet.lastName}"></td>
     <td><span th:each="specialty : ${vet.specialties}"
               th:text="${specialty.name + ' '}"/> <span
-      th:if="${vet.nrOfSpecialties == 0}">none</span></td>
+      th:if="${vet.nrOfSpecialties == 0}" th:text="#{none}">none</span></td>
   </tr>
   </tbody>
 </table>
 
 <div th:if="${totalPages > 1}">
-  <span>Pages:</span>
+  <span th:text="#{pages}">Pages:</span>
   <span>[</span>
   <span th:each="i: ${#numbers.sequence(1, totalPages)}">
       <a th:if="${currentPage != i}" th:href="@{'/vets.html?page=__${i}__'}">[[${i}]]</a>
@@ -33,24 +33,24 @@
     </span>
   <span>]&nbsp;</span>
   <span>
-      <a th:if="${currentPage > 1}" th:href="@{'/vets.html?page=1'}" title="First"
+      <a th:if="${currentPage > 1}" th:href="@{'/vets.html?page=1'}" title=#{first}
          class="fa fa-fast-backward"></a>
-      <span th:unless="${currentPage > 1}" title="First" class="fa fa-fast-backward"></span>
+      <span th:unless="${currentPage > 1}" th:text="#{first}" title=#{first} class="fa fa-fast-backward"></span>
     </span>
   <span>
-      <a th:if="${currentPage > 1}" th:href="@{'/vets.html?page=__${currentPage - 1}__'}" title="Previous"
+      <a th:if="${currentPage > 1}" th:href="@{'/vets.html?page=__${currentPage - 1}__'}" title=#{previous}
          class="fa fa-step-backward"></a>
-      <span th:unless="${currentPage > 1}" title="Previous" class="fa fa-step-backward"></span>
+      <span th:unless="${currentPage > 1}" th:text="#{previous}" title=#{previous} class="fa fa-step-backward"></span>
     </span>
   <span>
-      <a th:if="${currentPage < totalPages}" th:href="@{'/vets.html?page=__${currentPage + 1}__'}" title="Next"
+      <a th:if="${currentPage < totalPages}" th:href="@{'/vets.html?page=__${currentPage + 1}__'}" title=#{next}
          class="fa fa-step-forward"></a>
-      <span th:unless="${currentPage < totalPages}" title="Next" class="fa fa-step-forward"></span>
+      <span th:unless="${currentPage < totalPages}" th:text="#{next}" title=#{next} class="fa fa-step-forward"></span>
     </span>
   <span>
-      <a th:if="${currentPage < totalPages}" th:href="@{'/vets.html?page=__${totalPages}__'}" title="Last"
+      <a th:if="${currentPage < totalPages}" th:href="@{'/vets.html?page=__${totalPages}__'}" title=#{last}
          class="fa fa-fast-forward"></a>
-      <span th:unless="${currentPage < totalPages}" title="Last" class="fa fa-fast-forward"></span>
+      <span th:unless="${currentPage < totalPages}" th:text="#{last}" class="fa fa-fast-forward"></span>
     </span>
 </div>
 </body>