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Add Lesson 41 code
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‎Lesson41.SelectOption/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>spring-app</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.springframework</groupId>
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<artifactId>spring-jdbc</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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<dependency>
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<groupId>org.hibernate.validator</groupId>
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<artifactId>hibernate-validator</artifactId>
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<version>6.1.6.Final</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/org.postgresql/postgresql -->
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<dependency>
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<groupId>org.postgresql</groupId>
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<artifactId>postgresql</artifactId>
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<version>42.2.18</version>
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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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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<configuration>
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<source>8</source>
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<target>8</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎Lesson41.SelectOption/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.filter.CharacterEncodingFilter;
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import org.springframework.web.filter.HiddenHttpMethodFilter;
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import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
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import javax.servlet.DispatcherType;
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import javax.servlet.FilterRegistration;
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import javax.servlet.ServletContext;
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import javax.servlet.ServletException;
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import java.util.EnumSet;
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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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@Override
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public void onStartup(ServletContext aServletContext) throws ServletException {
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super.onStartup(aServletContext);
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registerCharacterEncodingFilter(aServletContext);
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registerHiddenFieldFilter(aServletContext);
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}
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private void registerHiddenFieldFilter(ServletContext aContext) {
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aContext.addFilter("hiddenHttpMethodFilter",
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new HiddenHttpMethodFilter()).addMappingForUrlPatterns(null ,true, "/*");
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}
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private void registerCharacterEncodingFilter(ServletContext aContext) {
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EnumSet<DispatcherType> dispatcherTypes = EnumSet.of(DispatcherType.REQUEST, DispatcherType.FORWARD);
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CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
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characterEncodingFilter.setEncoding("UTF-8");
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characterEncodingFilter.setForceEncoding(true);
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FilterRegistration.Dynamic characterEncoding = aContext.addFilter("characterEncoding", characterEncodingFilter);
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characterEncoding.addMappingForUrlPatterns(dispatcherTypes, true, "/*");
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}
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}

‎Lesson41.SelectOption/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.jdbc.core.JdbcTemplate;
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import org.springframework.jdbc.datasource.DriverManagerDataSource;
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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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import javax.sql.DataSource;
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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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templateResolver.setCharacterEncoding("UTF-8");
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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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resolver.setCharacterEncoding("UTF-8");
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registry.viewResolver(resolver);
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}
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@Bean
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public DataSource dataSource() {
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DriverManagerDataSource dataSource = new DriverManagerDataSource();
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dataSource.setDriverClassName("org.postgresql.Driver");
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dataSource.setUrl("jdbc:postgresql://localhost:5432/first_db");
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dataSource.setUsername("postgres");
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dataSource.setPassword("postgres");
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return dataSource;
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}
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@Bean
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public JdbcTemplate jdbcTemplate() {
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return new JdbcTemplate(dataSource());
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}
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}

‎Lesson41.SelectOption/src/main/java/ru/alishev/springcourse/controllers/AdminController.java‎

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package ru.alishev.springcourse.controllers;
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import org.springframework.beans.factory.annotation.Autowired;
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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.*;
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import ru.alishev.springcourse.dao.PersonDAO;
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import ru.alishev.springcourse.models.Person;
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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("/admin")
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public class AdminController {
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private final PersonDAO personDAO;
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@Autowired
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public AdminController(PersonDAO personDAO) {
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this.personDAO = personDAO;
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}
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@GetMapping()
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public String adminPage(Model model, @ModelAttribute("person") Person person) {
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model.addAttribute("people", personDAO.index());
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return "adminPage";
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}
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@PatchMapping("/add")
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public String makeAdmin(@ModelAttribute("person") Person person) {
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System.out.println(person.getId());
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return "redirect:/people";
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}
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}

‎Lesson41.SelectOption/src/main/java/ru/alishev/springcourse/controllers/PeopleController.java‎

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package ru.alishev.springcourse.controllers;
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import org.springframework.beans.factory.annotation.Autowired;
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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.validation.BindingResult;
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import org.springframework.web.bind.annotation.*;
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import ru.alishev.springcourse.dao.PersonDAO;
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import ru.alishev.springcourse.models.Person;
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import javax.validation.Valid;
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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("/people")
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public class PeopleController {
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private final PersonDAO personDAO;
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@Autowired
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public PeopleController(PersonDAO personDAO) {
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this.personDAO = personDAO;
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}
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@GetMapping()
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public String index(Model model) {
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model.addAttribute("people", personDAO.index());
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return "people/index";
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}
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@GetMapping("/{id}")
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public String show(@PathVariable("id") int id, Model model) {
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model.addAttribute("person", personDAO.show(id));
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return "people/show";
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}
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@GetMapping("/new")
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public String newPerson(@ModelAttribute("person") Person person) {
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return "people/new";
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}
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@PostMapping()
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public String create(@ModelAttribute("person") @Valid Person person,
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BindingResult bindingResult) {
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if (bindingResult.hasErrors())
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return "people/new";
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personDAO.save(person);
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return "redirect:/people";
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}
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@GetMapping("/{id}/edit")
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public String edit(Model model, @PathVariable("id") int id) {
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model.addAttribute("person", personDAO.show(id));
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return "people/edit";
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}
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@PatchMapping("/{id}")
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public String update(@ModelAttribute("person") @Valid Person person, BindingResult bindingResult,
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@PathVariable("id") int id) {
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if (bindingResult.hasErrors())
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return "people/edit";
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personDAO.update(id, person);
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return "redirect:/people";
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}
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@DeleteMapping("/{id}")
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public String delete(@PathVariable("id") int id) {
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personDAO.delete(id);
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return "redirect:/people";
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}
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}

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