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NeilAlishevNeilAlishev
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Add Lesson 20 code
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‎Lesson20.IntroToModel/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>ru.alishev.springcourse</groupId>
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<artifactId>intro-to-model</artifactId>
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<version>1.0-SNAPSHOT</version>
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<packaging>war</packaging>
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<name>spring-mvc-app1 Maven Webapp</name>
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<!-- FIXME change it to the project's website -->
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<url>http://www.example.com</url>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>1.7</maven.compiler.source>
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<maven.compiler.target>1.7</maven.compiler.target>
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<spring.version>5.2.1.RELEASE</spring.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.11</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-core</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-context</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-web</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-webmvc</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.thymeleaf</groupId>
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<artifactId>thymeleaf-spring5</artifactId>
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<version>3.0.11.RELEASE</version>
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</dependency>
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<dependency>
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<groupId>javax.servlet</groupId>
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<artifactId>javax.servlet-api</artifactId>
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<version>4.0.1</version>
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<scope>provided</scope>
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</dependency>
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</dependencies>
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<build>
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<finalName>spring-mvc-app1</finalName>
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<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
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<plugins>
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<plugin>
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<artifactId>maven-clean-plugin</artifactId>
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<version>3.1.0</version>
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</plugin>
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<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
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<plugin>
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<artifactId>maven-resources-plugin</artifactId>
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<version>3.0.2</version>
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</plugin>
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<plugin>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.8.0</version>
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</plugin>
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<plugin>
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<artifactId>maven-surefire-plugin</artifactId>
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<version>2.22.1</version>
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</plugin>
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<plugin>
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<artifactId>maven-war-plugin</artifactId>
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<version>3.2.2</version>
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</plugin>
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<plugin>
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<artifactId>maven-install-plugin</artifactId>
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<version>2.5.2</version>
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</plugin>
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<plugin>
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<artifactId>maven-deploy-plugin</artifactId>
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<version>2.8.2</version>
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</plugin>
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</plugins>
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</pluginManagement>
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</build>
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</project>

‎Lesson20.IntroToModel/src/main/java/ru/alishev/springcourse/config/MySpringMvcDispatcherSerlvetIntitializer.java‎

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package ru.alishev.springcourse.config;
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import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
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/**
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* @author Neil Alishev
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*/
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public class MySpringMvcDispatcherSerlvetIntitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
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@Override
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protected Class<?>[] getRootConfigClasses() {
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return null;
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}
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@Override
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protected Class<?>[] getServletConfigClasses() {
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return new Class[]{SpringConfig.class};
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}
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@Override
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protected String[] getServletMappings() {
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return new String[]{"/"};
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}
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}

‎Lesson20.IntroToModel/src/main/java/ru/alishev/springcourse/config/SpringConfig.java‎

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package ru.alishev.springcourse.config;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.ComponentScan;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.web.servlet.config.annotation.EnableWebMvc;
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import org.springframework.web.servlet.config.annotation.ViewResolverRegistry;
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import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
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import org.thymeleaf.spring5.SpringTemplateEngine;
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import org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver;
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import org.thymeleaf.spring5.view.ThymeleafViewResolver;
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/**
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* @author Neil Alishev
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*/
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@Configuration
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@ComponentScan("ru.alishev.springcourse")
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@EnableWebMvc
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public class SpringConfig implements WebMvcConfigurer {
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private final ApplicationContext applicationContext;
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@Autowired
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public SpringConfig(ApplicationContext applicationContext) {
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this.applicationContext = applicationContext;
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}
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@Bean
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public SpringResourceTemplateResolver templateResolver() {
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SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver();
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templateResolver.setApplicationContext(applicationContext);
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templateResolver.setPrefix("/WEB-INF/views/");
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templateResolver.setSuffix(".html");
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return templateResolver;
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}
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@Bean
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public SpringTemplateEngine templateEngine() {
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SpringTemplateEngine templateEngine = new SpringTemplateEngine();
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templateEngine.setTemplateResolver(templateResolver());
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templateEngine.setEnableSpringELCompiler(true);
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return templateEngine;
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}
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@Override
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public void configureViewResolvers(ViewResolverRegistry registry) {
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ThymeleafViewResolver resolver = new ThymeleafViewResolver();
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resolver.setTemplateEngine(templateEngine());
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registry.viewResolver(resolver);
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}
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}

‎Lesson20.IntroToModel/src/main/java/ru/alishev/springcourse/controllers/FirstController.java‎

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package ru.alishev.springcourse.controllers;
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import org.springframework.stereotype.Controller;
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import org.springframework.ui.Model;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestParam;
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/**
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* @author Neil Alishev
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*/
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@Controller
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@RequestMapping("/first")
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public class FirstController {
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@GetMapping("/hello")
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public String helloPage(@RequestParam(value = "name", required = false) String name,
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@RequestParam(value = "surname", required = false) String surname,
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Model model) {
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// System.out.println("Hello, " + name + " " + surname);
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model.addAttribute("message", "Hello, " + name + " " + surname);
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return "first/hello";
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}
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@GetMapping("/goodbye")
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public String goodByePage() {
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return "first/goodbye";
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}
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@GetMapping("/calculator")
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public String calculator(@RequestParam("a") int a, @RequestParam("b") int b,
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@RequestParam("action") String action, Model model) {
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double result;
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switch (action) {
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case "multiplication":
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result = a * b;
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break;
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case "division":
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result = a / (double) b;
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break;
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case "subtraction":
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result = a - b;
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break;
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case "addition":
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result = a + b;
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break;
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default:
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result = 0;
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break;
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}
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model.addAttribute("result", result);
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return "first/calculator";
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}
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}

‎Lesson20.IntroToModel/src/main/java/ru/alishev/springcourse/controllers/SecondController.java‎

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package ru.alishev.springcourse.controllers;
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import org.springframework.stereotype.Controller;
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import org.springframework.web.bind.annotation.GetMapping;
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/**
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* @author Neil Alishev
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*/
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@Controller
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public class SecondController {
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@GetMapping("/exit")
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public String exit() {
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return "second/exit";
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}
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}

‎Lesson20.IntroToModel/src/main/webapp/WEB-INF/views/first/calculator.html‎

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<!DOCTYPE html>
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<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
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<head>
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<meta charset="UTF-8">
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<title>Calculator</title>
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</head>
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<body>
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The result is: <p th:text="${result}"/>
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</body>
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</html>

‎Lesson20.IntroToModel/src/main/webapp/WEB-INF/views/first/goodbye.html‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>Goodbye</title>
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</head>
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<body>
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Goodbye!
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<a href="/first/hello">Say hello</a> or <a href="/exit">Exit</a>
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</body>
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</html>

‎Lesson20.IntroToModel/src/main/webapp/WEB-INF/views/first/hello.html‎

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<!DOCTYPE html>
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<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
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<head>
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<meta charset="UTF-8">
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<title>Hello</title>
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</head>
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<body>
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Hello!
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<a href="/first/goodbye">Say goodbye</a> or <a href="/exit">Exit</a>
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or <a href="/first/hello?name=Tom&surname=Jone">Request with parameters</a>
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<p th:text="${message}"/>
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</body>
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</html>

‎Lesson20.IntroToModel/src/main/webapp/WEB-INF/views/second/exit.html‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>Exit</title>
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</head>
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<body>
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No more links
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</body>
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</html>

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