JAVA-3509: Moved spring-mvc-basics inside spring-web-modules

spring-web-modules/spring-mvc-basics/.gitignore

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+*.class
+
+#folders#
+/target
+/neoDb*
+/data
+/src/main/webapp/WEB-INF/classes
+*/META-INF/*
+
+# Packaged files #
+*.jar
+*.war
+*.ear

spring-web-modules/spring-mvc-basics/README.md

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+## Spring MVC Basics
+
+This module contains articles about the basics of Spring MVC. Articles about more specific areas of Spring MVC have
+their own module. 
+
+### The Course
+The "REST With Spring" Classes: http://bit.ly/restwithspring
+
+### Relevant Articles: 
+- [Spring MVC Tutorial](https://www.baeldung.com/spring-mvc-tutorial)
+- [An Intro to the Spring DispatcherServlet](https://www.baeldung.com/spring-dispatcherservlet)
+- [The Spring @Controller and @RestController Annotations](https://www.baeldung.com/spring-controller-vs-restcontroller)
+- [A Guide to the ViewResolver in Spring MVC](https://www.baeldung.com/spring-mvc-view-resolver-tutorial)
+- [Guide to Spring Handler Mappings](https://www.baeldung.com/spring-handler-mappings)
+- [Spring MVC Content Negotiation](https://www.baeldung.com/spring-mvc-content-negotiation-json-xml)
+- [Spring @RequestMapping New Shortcut Annotations](https://www.baeldung.com/spring-new-requestmapping-shortcuts)
+- [Spring MVC Custom Validation](https://www.baeldung.com/spring-mvc-custom-validator)
+- [Using Spring @ResponseStatus to Set HTTP Status Code](https://www.baeldung.com/spring-response-status)
+- [Spring MVC and the @ModelAttribute Annotation](https://www.baeldung.com/spring-mvc-and-the-modelattribute-annotation)
+- [The HttpMediaTypeNotAcceptableException in Spring MVC](https://www.baeldung.com/spring-httpmediatypenotacceptable)
+- More articles: [[more -->]](/spring-mvc-basics-2)

spring-web-modules/spring-mvc-basics/pom.xml

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+<?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>
+    <artifactId>spring-mvc-basics</artifactId>
+    <version>0.1-SNAPSHOT</version>
+    <name>spring-mvc-basics</name>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-boot-2</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-2</relativePath>
+    </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-validation</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>commons-fileupload</groupId>
+            <artifactId>commons-fileupload</artifactId>
+            <version>${commons-fileupload.version}</version>
+        </dependency>        
+        <!-- to enable JSP -->
+        <dependency>
+            <groupId>org.apache.tomcat.embed</groupId>
+            <artifactId>tomcat-embed-jasper</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>jstl</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>spring-mvc-basics</finalName>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <mainClass>com.baeldung.Application</mainClass>
+                    <layout>JAR</layout>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
+

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/Application.java

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+package com.baeldung;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/config/MainWebAppInitializer.java

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+package com.baeldung.config;
+
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRegistration;
+
+import org.springframework.web.WebApplicationInitializer;
+import org.springframework.web.context.ContextLoaderListener;
+import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
+import org.springframework.web.servlet.DispatcherServlet;
+
+public class MainWebAppInitializer implements WebApplicationInitializer {
+
+    @Override
+    public void onStartup(ServletContext container) throws ServletException {
+        AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
+
+        context.scan("com.baeldung");
+
+        container.addListener(new ContextLoaderListener(context));
+
+        ServletRegistration.Dynamic dispatcher = container.addServlet("mvc", new DispatcherServlet(context));
+        dispatcher.setLoadOnStartup(1);
+        dispatcher.addMapping("/");
+    }
+
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/customvalidator/ContactNumberConstraint.java

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+package com.baeldung.customvalidator;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import javax.validation.Constraint;
+import javax.validation.Payload;
+
+@Documented
+@Constraint(validatedBy = ContactNumberValidator.class)
+@Target({ ElementType.METHOD, ElementType.FIELD })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface ContactNumberConstraint {
+
+    String message() default "Invalid phone number";
+
+    Class<?>[] groups() default {};
+
+    Class<? extends Payload>[] payload() default {};
+
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/customvalidator/ContactNumberValidator.java

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+package com.baeldung.customvalidator;
+
+import javax.validation.ConstraintValidator;
+import javax.validation.ConstraintValidatorContext;
+
+public class ContactNumberValidator implements ConstraintValidator<ContactNumberConstraint, String> {
+
+    @Override
+    public void initialize(ContactNumberConstraint contactNumber) {
+    }
+
+    @Override
+    public boolean isValid(String contactField, ConstraintValidatorContext cxt) {
+        return contactField != null && contactField.matches("[0-9]+") && (contactField.length() > 8) && (contactField.length() < 14);
+    }
+
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/customvalidator/FieldsValueMatch.java

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+package com.baeldung.customvalidator;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import javax.validation.Constraint;
+import javax.validation.Payload;
+
+@Constraint(validatedBy = FieldsValueMatchValidator.class)
+@Target({ ElementType.TYPE })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface FieldsValueMatch {
+
+    String message() default "Fields values don't match!";
+
+    Class<?>[] groups() default {};
+
+    Class<? extends Payload>[] payload() default {};
+
+    String field();
+
+    String fieldMatch();
+
+    @Target({ ElementType.TYPE })
+    @Retention(RetentionPolicy.RUNTIME)
+    @interface List {
+        FieldsValueMatch[] value();
+    }
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/customvalidator/FieldsValueMatchValidator.java

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+package com.baeldung.customvalidator;
+
+import javax.validation.ConstraintValidator;
+import javax.validation.ConstraintValidatorContext;
+
+import org.springframework.beans.BeanWrapperImpl;
+
+public class FieldsValueMatchValidator implements ConstraintValidator<FieldsValueMatch, Object> {
+
+    private String field;
+    private String fieldMatch;
+
+    public void initialize(FieldsValueMatch constraintAnnotation) {
+        this.field = constraintAnnotation.field();
+        this.fieldMatch = constraintAnnotation.fieldMatch();
+    }
+
+    public boolean isValid(Object value, ConstraintValidatorContext context) {
+
+        Object fieldValue = new BeanWrapperImpl(value).getPropertyValue(field);
+        Object fieldMatchValue = new BeanWrapperImpl(value).getPropertyValue(fieldMatch);
+        
+        if (fieldValue != null) {
+            return fieldValue.equals(fieldMatchValue);
+        } else {
+            return fieldMatchValue == null;
+        }
+
+    }
+
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/exception/HttpMediaTypeNotAcceptableExceptionExampleController.java

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+package com.baeldung.exception;
+
+import java.util.Collections;
+import java.util.Map;
+
+import org.springframework.http.MediaType;
+import org.springframework.web.HttpMediaTypeNotAcceptableException;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@ControllerAdvice
+public class HttpMediaTypeNotAcceptableExceptionExampleController {
+
+    @PostMapping(value = "/test", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
+    public Map<String, String> test() {
+        return Collections.singletonMap("key", "value");
+    }
+
+    @ResponseBody
+    @ExceptionHandler(HttpMediaTypeNotAcceptableException.class)
+    public String handleHttpMediaTypeNotAcceptableException() {
+        return "acceptable MIME type:" + MediaType.APPLICATION_JSON_VALUE;
+    }
+
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/model/Book.java

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+package com.baeldung.model;
+
+public class Book {
+
+    private int id;
+    private String author;
+    private String title;
+
+    public Book() {
+    }
+
+    public Book(int id, String author, String title) {
+        this.id = id;
+        this.author = author;
+        this.title = title;
+    }
+
+    public int getId() {
+        return id;
+    }
+    
+    public void setId(int id) {
+        this.id = id;
+    }
+    
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+    
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/model/Employee.java

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+package com.baeldung.model;
+
+import javax.xml.bind.annotation.XmlRootElement;
+
+@XmlRootElement
+public class Employee {
+
+    private long id;
+    private String name;
+    private String contactNumber;
+    private String workingArea;
+
+    public Employee() {
+        super();
+    }
+
+    public Employee(final long id, final String name, final String contactNumber, final String workingArea) {
+        this.id = id;
+        this.name = name;
+        this.contactNumber = contactNumber;
+        this.workingArea = workingArea;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(final String name) {
+        this.name = name;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(final long id) {
+        this.id = id;
+    }
+
+    public String getContactNumber() {
+        return contactNumber;
+    }
+
+    public void setContactNumber(final String contactNumber) {
+        this.contactNumber = contactNumber;
+    }
+
+    public String getWorkingArea() {
+        return workingArea;
+    }
+
+    public void setWorkingArea(final String workingArea) {
+        this.workingArea = workingArea;
+    }
+
+    @Override
+    public String toString() {
+        return "Employee [id=" + id + ", name=" + name + ", contactNumber=" + contactNumber + ", workingArea=" + workingArea + "]";
+    }
+
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/model/NewUserForm.java

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+package com.baeldung.model;
+
+import com.baeldung.customvalidator.FieldsValueMatch;
+
+@FieldsValueMatch.List({ @FieldsValueMatch(field = "password", fieldMatch = "verifyPassword", message = "Passwords do not match!"), @FieldsValueMatch(field = "email", fieldMatch = "verifyEmail", message = "Email addresses do not match!") })
+public class NewUserForm {
+    private String email;
+    private String verifyEmail;
+    private String password;
+    private String verifyPassword;
+
+    public NewUserForm() {
+    }
+
+    public NewUserForm(String email, String verifyEmail, String password, String verifyPassword) {
+        super();
+        this.email = email;
+        this.verifyEmail = verifyEmail;
+        this.password = password;
+        this.verifyPassword = verifyPassword;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getVerifyEmail() {
+        return verifyEmail;
+    }
+
+    public void setVerifyEmail(String verifyEmail) {
+        this.verifyEmail = verifyEmail;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getVerifyPassword() {
+        return verifyPassword;
+    }
+
+    public void setVerifyPassword(String verifyPassword) {
+        this.verifyPassword = verifyPassword;
+    }
+
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/model/User.java

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+package com.baeldung.model;
+
+
+public class User {
+    private long id;
+    private String firstName;
+    private String lastName;
+
+    public User(long id, String firstName, String lastName) {
+        this.id = id;
+        this.firstName = firstName;
+        this.lastName = lastName;
+    }
+
+    public User() {
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/model/ValidatedPhone.java

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+package com.baeldung.model;
+
+import com.baeldung.customvalidator.ContactNumberConstraint;
+
+public class ValidatedPhone {
+
+    @ContactNumberConstraint
+    private String phone;
+
+    public String getPhone() {
+        return phone;
+    }
+
+    public void setPhone(String phone) {
+        this.phone = phone;
+    }
+
+    @Override
+    public String toString() {
+        return phone;
+    }
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/services/UserService.java

@@ -0,0 +1,17 @@
+package com.baeldung.services;
+
+import org.springframework.stereotype.Service;
+
+import com.baeldung.model.User;
+
+@Service
+public class UserService {
+
+    public User fetchUserByFirstName(String firstName) {
+        return new User(1, firstName, "Everyperson");
+    }
+
+    public User exampleUser() {
+        return new User(1, "Example", "Everyperson");
+    }
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/spring/web/config/WebConfig.java

@@ -0,0 +1,125 @@
+package com.baeldung.spring.web.config;
+
+import java.io.IOException;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.http.MediaType;
+import org.springframework.ui.context.support.ResourceBundleThemeSource;
+import org.springframework.web.multipart.commons.CommonsMultipartResolver;
+import org.springframework.web.servlet.ViewResolver;
+import org.springframework.web.servlet.config.annotation.ContentNegotiationConfigurer;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+import org.springframework.web.servlet.resource.PathResourceResolver;
+import org.springframework.web.servlet.theme.CookieThemeResolver;
+import org.springframework.web.servlet.theme.ThemeChangeInterceptor;
+import org.springframework.web.servlet.view.InternalResourceViewResolver;
+import org.springframework.web.servlet.view.JstlView;
+import org.springframework.web.servlet.view.ResourceBundleViewResolver;
+import org.springframework.web.servlet.view.XmlViewResolver;
+
+//@EnableWebMvc
+//@ComponentScan(basePackages = { "com.baeldung.web.controller" })
+@Configuration
+public class WebConfig implements WebMvcConfigurer {
+
+    @Override
+    public void addViewControllers(final ViewControllerRegistry registry) {
+        registry.addViewController("/")
+            .setViewName("index");
+    }
+
+    /** Multipart file uploading configuratioin */
+    @Bean
+    public CommonsMultipartResolver multipartResolver() throws IOException {
+        CommonsMultipartResolver resolver = new CommonsMultipartResolver();
+        resolver.setMaxUploadSize(10000000);
+        return resolver;
+    }
+
+    @Bean
+    public ViewResolver viewResolver() {
+        final InternalResourceViewResolver bean = new InternalResourceViewResolver();
+        bean.setViewClass(JstlView.class);
+        bean.setPrefix("/WEB-INF/view/");
+        bean.setSuffix(".jsp");
+        bean.setOrder(2);
+        return bean;
+    }
+
+    /** Static resource locations including themes*/
+    @Override
+    public void addResourceHandlers(ResourceHandlerRegistry registry) {
+        registry.addResourceHandler("/resources/**/*")
+            .addResourceLocations("/", "/resources/")
+            .setCachePeriod(3600)
+            .resourceChain(true)
+            .addResolver(new PathResourceResolver());
+    }
+
+    /** BEGIN theme configuration */
+    @Bean
+    public ResourceBundleThemeSource themeSource() {
+        ResourceBundleThemeSource themeSource = new ResourceBundleThemeSource();
+        themeSource.setDefaultEncoding("UTF-8");
+        themeSource.setBasenamePrefix("themes.");
+        return themeSource;
+    }
+
+    @Bean
+    public CookieThemeResolver themeResolver() {
+        CookieThemeResolver resolver = new CookieThemeResolver();
+        resolver.setDefaultThemeName("default");
+        resolver.setCookieName("example-theme-cookie");
+        return resolver;
+    }
+
+    @Bean
+    public ThemeChangeInterceptor themeChangeInterceptor() {
+        ThemeChangeInterceptor interceptor = new ThemeChangeInterceptor();
+        interceptor.setParamName("theme");
+        return interceptor;
+    }
+
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        registry.addInterceptor(themeChangeInterceptor());
+    }
+
+    /** END theme configuration */
+
+    @Bean
+    public ViewResolver resourceBundleViewResolver() {
+        final ResourceBundleViewResolver bean = new ResourceBundleViewResolver();
+        bean.setBasename("views");
+        bean.setOrder(0);
+        return bean;
+    }
+
+    @Bean
+    public ViewResolver xmlViewResolver() {
+        final XmlViewResolver bean = new XmlViewResolver();
+        bean.setLocation(new ClassPathResource("views.xml"));
+        bean.setOrder(1);
+        return bean;
+    }
+
+    /**
+     * Spring Boot allows configuring Content Negotiation using properties
+     */
+    @Override
+    public void configureContentNegotiation(final ContentNegotiationConfigurer configurer) {
+        configurer.favorPathExtension(true)
+            .favorParameter(true)
+            .parameterName("mediaType")
+            .ignoreAcceptHeader(false)
+            .useRegisteredExtensionsOnly(false)
+            .defaultContentType(MediaType.APPLICATION_JSON)
+            .mediaType("xml", MediaType.APPLICATION_XML)
+            .mediaType("json", MediaType.APPLICATION_JSON);
+    }
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/web/controller/EmployeeController.java

@@ -0,0 +1,60 @@
+package com.baeldung.web.controller;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.ui.ModelMap;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.servlet.ModelAndView;
+
+import com.baeldung.model.Employee;
+
+@Controller
+public class EmployeeController {
+
+    Map<Long, Employee> employeeMap = new HashMap<>();
+
+    @ModelAttribute("employees")
+    public void initEmployees() {
+        employeeMap.put(1L, new Employee(1L, "John", "223334411", "rh"));
+        employeeMap.put(2L, new Employee(2L, "Peter", "22001543", "informatics"));
+        employeeMap.put(3L, new Employee(3L, "Mike", "223334411", "admin"));
+    }
+
+    @RequestMapping(value = "/employee", method = RequestMethod.GET)
+    public ModelAndView showForm() {
+        return new ModelAndView("employeeHome", "employee", new Employee());
+    }
+
+    @RequestMapping(value = "/employee/{Id}", produces = { "application/json", "application/xml" }, method = RequestMethod.GET)
+    public @ResponseBody Employee getEmployeeById(@PathVariable final Long Id) {
+        return employeeMap.get(Id);
+    }
+
+    @RequestMapping(value = "/addEmployee", method = RequestMethod.POST)
+    public String submit(@ModelAttribute("employee") final Employee employee, final BindingResult result, final ModelMap model) {
+        if (result.hasErrors()) {
+            return "error";
+        }
+        model.addAttribute("name", employee.getName());
+        model.addAttribute("contactNumber", employee.getContactNumber());
+        model.addAttribute("workingArea", employee.getWorkingArea());
+        model.addAttribute("id", employee.getId());
+
+        employeeMap.put(employee.getId(), employee);
+
+        return "employeeView";
+    }
+
+    @ModelAttribute
+    public void addAttributes(final Model model) {
+        model.addAttribute("msg", "Welcome to the Netherlands!");
+    }
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/web/controller/MultipartController.java

@@ -0,0 +1,47 @@
+package com.baeldung.web.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.multipart.MultipartFile;
+import org.springframework.web.servlet.ModelAndView;
+
+import javax.servlet.ServletContext;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+
+@Controller
+public class MultipartController {
+
+    @Autowired
+    ServletContext context;
+
+    @RequestMapping(value = "/upload", method = RequestMethod.POST)
+    public ModelAndView FileuploadController(@RequestParam("file") MultipartFile file) {
+        ModelAndView modelAndView = new ModelAndView("index");
+        try {
+            InputStream in = file.getInputStream();
+            String path = new File(".").getAbsolutePath();
+            FileOutputStream f = new FileOutputStream(path.substring(0, path.length() - 1) + "/uploads/" + file.getOriginalFilename());
+            try {
+                int ch;
+                while ((ch = in.read()) != -1) {
+                    f.write(ch);
+                }
+                modelAndView.getModel().put("message", "File uploaded successfully!");
+            } catch (Exception e) {
+                System.out.println("Exception uploading multipart: " + e);
+            } finally {
+                f.flush();
+                f.close();
+                in.close();
+            }
+        } catch (Exception e) {
+            System.out.println("Exception uploading multipart: " + e);
+        }
+        return modelAndView;
+    }
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/web/controller/NewUserController.java

@@ -0,0 +1,31 @@
+package com.baeldung.web.controller;
+
+import javax.validation.Valid;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+
+import com.baeldung.model.NewUserForm;
+
+@Controller
+public class NewUserController {
+
+    @GetMapping("/user")
+    public String loadFormPage(Model model) {
+        model.addAttribute("newUserForm", new NewUserForm());
+        return "userHome";
+    }
+
+    @PostMapping("/user")
+    public String submitForm(@Valid NewUserForm newUserForm, BindingResult result, Model model) {
+        if (result.hasErrors()) {
+            return "userHome";
+        }
+
+        model.addAttribute("message", "Valid form");
+        return "userHome";
+    }
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/web/controller/RequestMappingShortcutsController.java

@@ -0,0 +1,47 @@
+package com.baeldung.web.controller;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class RequestMappingShortcutsController {
+
+    @GetMapping("/get")
+    public @ResponseBody ResponseEntity<String> get() {
+        return new ResponseEntity<String>("GET Response", HttpStatus.OK);
+    }
+
+    @GetMapping("/get/{id}")
+    public @ResponseBody ResponseEntity<String> getById(@PathVariable String id) {
+        return new ResponseEntity<String>("GET Response : " + id, HttpStatus.OK);
+    }
+
+    @PostMapping("/post")
+    public @ResponseBody ResponseEntity<String> post() {
+        return new ResponseEntity<String>("POST Response", HttpStatus.OK);
+    }
+
+    @PutMapping("/put")
+    public @ResponseBody ResponseEntity<String> put() {
+        return new ResponseEntity<String>("PUT Response", HttpStatus.OK);
+    }
+
+    @DeleteMapping("/delete")
+    public @ResponseBody ResponseEntity<String> delete() {
+        return new ResponseEntity<String>("DELETE Response", HttpStatus.OK);
+    }
+
+    @PatchMapping("/patch")
+    public @ResponseBody ResponseEntity<String> patch() {
+        return new ResponseEntity<String>("PATCH Response", HttpStatus.OK);
+    }
+
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/web/controller/ResponseStatusRestController.java

@@ -0,0 +1,48 @@
+package com.baeldung.web.controller;
+
+import java.util.concurrent.ThreadLocalRandom;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.baeldung.model.Book;
+
+@RestController
+public class ResponseStatusRestController {
+
+    @GetMapping("/teapot")
+    @ResponseStatus(HttpStatus.I_AM_A_TEAPOT)
+    public void teaPot() {
+    }
+
+    @GetMapping("empty")
+    @ResponseStatus(HttpStatus.NO_CONTENT)
+    public void emptyResponse() {
+    }
+
+    @GetMapping("empty-no-responsestatus")
+    public void emptyResponseWithoutResponseStatus() {
+    }
+
+    @PostMapping("create")
+    @ResponseStatus(HttpStatus.CREATED)
+    public Book createEntity() {
+        // here we would create and persist an entity
+        int randomInt = ThreadLocalRandom.current()
+            .nextInt(1, 100);
+        Book entity = new Book(randomInt, "author" + randomInt, "title" + randomInt);
+        return entity;
+    }
+    
+    @PostMapping("create-no-responsestatus")
+    public Book createEntityWithoutResponseStatus() {
+        // here we would create and persist an entity
+        int randomInt = ThreadLocalRandom.current()
+            .nextInt(1, 100);
+        Book entity = new Book(randomInt, "author" + randomInt, "title" + randomInt);
+        return entity;
+    }
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/web/controller/SampleController.java

@@ -0,0 +1,24 @@
+package com.baeldung.web.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+
+@Controller
+public class SampleController {
+
+    @GetMapping("/sample")
+    public String showForm() {
+        return "sample";
+    }
+    
+    @GetMapping("/sample2")
+    public String showForm2() {
+        return "sample2";
+    }
+    
+    @GetMapping("/sample3")
+    public String showForm3() {
+        return "sample3";
+    }
+
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/web/controller/SimpleBookController.java

@@ -0,0 +1,31 @@
+package com.baeldung.web.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+import com.baeldung.model.Book;
+
+@Controller
+@RequestMapping("books")
+public class SimpleBookController {
+
+    @RequestMapping(value = "/{id}", method = RequestMethod.GET, produces = "application/json")
+    public @ResponseBody Book getBook(@PathVariable int id) {
+        return findBookById(id);
+    }
+
+    private Book findBookById(int id) {
+        Book book = null;
+        if (id == 42) {
+            book = new Book();
+            book.setId(id);
+            book.setAuthor("Douglas Adamas");
+            book.setTitle("Hitchhiker's guide to the galaxy");
+        }
+        return book;
+    }
+
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/web/controller/SimpleBookRestController.java

@@ -0,0 +1,29 @@
+package com.baeldung.web.controller;
+
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.baeldung.model.Book;
+
+@RestController
+@RequestMapping("books-rest")
+public class SimpleBookRestController {
+    
+    @RequestMapping(value = "/{id}", method = RequestMethod.GET, produces = "application/json")
+    public Book getBook(@PathVariable int id) {
+        return findBookById(id);
+    }
+
+    private Book findBookById(int id) {
+        Book book = null;
+        if (id == 42) {
+            book = new Book();
+            book.setId(id);
+            book.setAuthor("Douglas Adamas");
+            book.setTitle("Hitchhiker's guide to the galaxy");
+        }
+        return book;
+    }
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/web/controller/UserController.java

@@ -0,0 +1,31 @@
+package com.baeldung.web.controller;
+
+import com.baeldung.model.User;
+import com.baeldung.services.UserService;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+@Controller
+@RequestMapping("/user")
+public class UserController {
+
+    @Autowired
+    private UserService userService;
+
+    @RequestMapping(value = "/example", method = RequestMethod.GET)
+    @ResponseBody
+    public User fetchUserExample() {
+        return userService.exampleUser();
+    }
+
+    @RequestMapping(value = "/name", method = RequestMethod.GET)
+    @ResponseBody
+    public User fetchUserByFirstName(@RequestParam(value = "firstName") String firstName) {
+        return userService.fetchUserByFirstName(firstName);
+    }
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/web/controller/UserRestController.java

@@ -0,0 +1,28 @@
+package com.baeldung.web.controller;
+
+import com.baeldung.model.User;
+import com.baeldung.services.UserService;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/rest/user")
+public class UserRestController {
+
+    @Autowired
+    private UserService userService;
+
+    @RequestMapping(value = "/example", method = RequestMethod.GET)
+    public User fetchUserExample() {
+        return userService.exampleUser();
+    }
+
+    @RequestMapping(value = "/name", method = RequestMethod.GET)
+    public User fetchUserByFirstName(@RequestParam(value = "firstName") String firstName) {
+        return userService.fetchUserByFirstName(firstName);
+    }
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/web/controller/ValidatedPhoneController.java

@@ -0,0 +1,32 @@
+package com.baeldung.web.controller;
+
+import javax.validation.Valid;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+
+import com.baeldung.model.ValidatedPhone;
+
+@Controller
+public class ValidatedPhoneController {
+
+    @GetMapping("/validatePhone")
+    public String loadFormPage(Model m) {
+        m.addAttribute("validatedPhone", new ValidatedPhone());
+        return "phoneHome";
+    }
+
+    @PostMapping("/addValidatePhone")
+    public String submitForm(@Valid ValidatedPhone validatedPhone, BindingResult result, Model m) {
+        if (result.hasErrors()) {
+            return "phoneHome";
+        }
+
+        m.addAttribute("message", "Successfully saved phone: " + validatedPhone.toString());
+        return "phoneHome";
+    }
+
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/web/controller/handlermapping/BeanNameHandlerMappingController.java

@@ -0,0 +1,16 @@
+package com.baeldung.web.controller.handlermapping;
+
+import org.springframework.web.servlet.ModelAndView;
+import org.springframework.web.servlet.mvc.AbstractController;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class BeanNameHandlerMappingController extends AbstractController {
+    @Override
+    protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {
+         ModelAndView model = new ModelAndView("bean-name-handler-mapping");
+        return model;
+    }
+
+}

spring-web-modules/spring-mvc-basics/src/main/java/com/baeldung/web/controller/handlermapping/SimpleUrlMappingController.java

@@ -0,0 +1,16 @@
+package com.baeldung.web.controller.handlermapping;
+
+import org.springframework.web.servlet.ModelAndView;
+import org.springframework.web.servlet.mvc.AbstractController;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class SimpleUrlMappingController extends AbstractController {
+    @Override
+    protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {
+        ModelAndView model = new ModelAndView("simple-url-handler-mapping");
+        return model;
+    }
+
+}