added example project for cookies

spring-boot/cookie-demo/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="target/classes" path="src/main/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry excluding="**" kind="src" output="target/classes" path="src/main/resources">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" output="target/test-classes" path="src/test/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+			<attribute name="test" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>

spring-boot/cookie-demo/.mvn/wrapper/MavenWrapperDownloader.java

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+/*
+ * Copyright 2007-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import java.net.*;
+import java.io.*;
+import java.nio.channels.*;
+import java.util.Properties;
+
+public class MavenWrapperDownloader {
+
+    private static final String WRAPPER_VERSION = "0.5.6";
+    /**
+     * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
+     */
+    private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+        + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
+
+    /**
+     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
+     * use instead of the default one.
+     */
+    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
+            ".mvn/wrapper/maven-wrapper.properties";
+
+    /**
+     * Path where the maven-wrapper.jar will be saved to.
+     */
+    private static final String MAVEN_WRAPPER_JAR_PATH =
+            ".mvn/wrapper/maven-wrapper.jar";
+
+    /**
+     * Name of the property which should be used to override the default download url for the wrapper.
+     */
+    private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
+
+    public static void main(String args[]) {
+        System.out.println("- Downloader started");
+        File baseDirectory = new File(args[0]);
+        System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
+
+        // If the maven-wrapper.properties exists, read it and check if it contains a custom
+        // wrapperUrl parameter.
+        File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
+        String url = DEFAULT_DOWNLOAD_URL;
+        if(mavenWrapperPropertyFile.exists()) {
+            FileInputStream mavenWrapperPropertyFileInputStream = null;
+            try {
+                mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
+                Properties mavenWrapperProperties = new Properties();
+                mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
+                url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
+            } catch (IOException e) {
+                System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
+            } finally {
+                try {
+                    if(mavenWrapperPropertyFileInputStream != null) {
+                        mavenWrapperPropertyFileInputStream.close();
+                    }
+                } catch (IOException e) {
+                    // Ignore ...
+                }
+            }
+        }
+        System.out.println("- Downloading from: " + url);
+
+        File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
+        if(!outputFile.getParentFile().exists()) {
+            if(!outputFile.getParentFile().mkdirs()) {
+                System.out.println(
+                        "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+            }
+        }
+        System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
+        try {
+            downloadFileFromURL(url, outputFile);
+            System.out.println("Done");
+            System.exit(0);
+        } catch (Throwable e) {
+            System.out.println("- Error downloading");
+            e.printStackTrace();
+            System.exit(1);
+        }
+    }
+
+    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+        if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
+            String username = System.getenv("MVNW_USERNAME");
+            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
+            Authenticator.setDefault(new Authenticator() {
+                @Override
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication(username, password);
+                }
+            });
+        }
+        URL website = new URL(urlString);
+        ReadableByteChannel rbc;
+        rbc = Channels.newChannel(website.openStream());
+        FileOutputStream fos = new FileOutputStream(destination);
+        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+        fos.close();
+        rbc.close();
+    }
+
+}

spring-boot/cookie-demo/.mvn/wrapper/maven-wrapper.properties

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+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.3/apache-maven-3.6.3-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar

spring-boot/cookie-demo/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>cookie-demo</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+	</natures>
+</projectDescription>

spring-boot/cookie-demo/.settings/org.eclipse.core.resources.prefs

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+eclipse.preferences.version=1
+encoding//src/main/java=UTF-8
+encoding//src/main/resources=UTF-8
+encoding/<project>=UTF-8

spring-boot/cookie-demo/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,9 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.methodParameters=generate
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
+org.eclipse.jdt.core.compiler.compliance=11
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=ignore
+org.eclipse.jdt.core.compiler.release=disabled
+org.eclipse.jdt.core.compiler.source=11

spring-boot/cookie-demo/.settings/org.eclipse.m2e.core.prefs

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+activeProfiles=
+eclipse.preferences.version=1
+resolveWorkspaceProjects=true
+version=1

spring-boot/cookie-demo/README.md

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+# Related Blog Posts
+
+* [Cookies]()

spring-boot/cookie-demo/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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	
+	<groupId>io.reflectoring</groupId>
+	<artifactId>cookie-demo</artifactId>
+	<version>1.0.0-SNAPSHOT</version>
+	<name>cookie-demo</name>
+	<packaging>jar</packaging>
+	<description>Demo project for Spring Boot</description>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.3.0.RELEASE</version>
+	</parent>
+	
+	<properties>
+		<java.version>11</java.version>
+		
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>4.13</version>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+			<exclusions>
+				<exclusion>
+					<groupId>org.junit.vintage</groupId>
+					<artifactId>junit-vintage-engine</artifactId>
+				</exclusion>
+			</exclusions>
+		</dependency>
+		<dependency>
+			<groupId>org.mockito</groupId>
+			<artifactId>mockito-core</artifactId>
+		</dependency>
+
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

spring-boot/cookie-demo/src/main/java/io/reflectoring/cookie/application/CookieDemoApplication.java

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+package io.reflectoring.cookie.application;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.scheduling.annotation.EnableAsync;
+
+@SpringBootApplication
+@ComponentScan(basePackages = { "io.reflectoring.cookie" })
+public class CookieDemoApplication {
+
+	public static void main(String[] args) {
+		SpringApplication springApplication = new SpringApplication(CookieDemoApplication.class);
+		springApplication.run(args);
+	}
+
+}

spring-boot/cookie-demo/src/main/java/io/reflectoring/cookie/controllers/ServletCookieController.java

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+package io.reflectoring.cookie.controllers;
+
+import java.util.Arrays;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.http.HttpCookie;
+import org.springframework.web.bind.annotation.CookieValue;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import io.reflectoring.cookie.utils.CookieUtil;
+
+@RestController
+@RequestMapping("/")
+public class ServletCookieController {
+	
+
+	    @GetMapping("/create-servlet-cookie")
+	    public String setCookie(HttpServletRequest request, HttpServletResponse response) {
+            System.out.println("domain" + request.getServerName());
+	    	Cookie servletCookie = CookieUtil.createCookie("cookie-name", "servlet-cookie", 1 * 24 * 60 * 60, true, true, "/", request.getServerName());
+	        response.addCookie(servletCookie);
+
+	        return String.format("Cookie with name %s and value %s was created", servletCookie.getName(), servletCookie.getValue());
+	    }
+
+	    @GetMapping("/delete-servlet-cookie")
+	    public String deleteCookie(HttpServletRequest request, HttpServletResponse response) {
+
+	    	Cookie deleteServletookie = CookieUtil.createCookie("cookie-name", null, 0, true, true, "/", request.getServerName());
+	        response.addCookie(deleteServletookie);
+
+	        return String.format("Cookie with name %s was deleted", deleteServletookie.getName());
+	    }
+
+	    @GetMapping("/all-servlet-cookies")
+	    public String readAllCookies(HttpServletRequest request) {
+	    	
+	    	return CookieUtil.readCookie(request, "cookie-name").orElse("cookie with name \"cookie-name\" is missing");
+	    	
+	    }
+
+}

spring-boot/cookie-demo/src/main/java/io/reflectoring/cookie/controllers/SpringCookieController.java

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+package io.reflectoring.cookie.controllers;
+
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.ResponseCookie;
+import org.springframework.http.ResponseEntity;
+import org.springframework.util.StringUtils;
+import org.springframework.web.bind.annotation.CookieValue;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.util.WebUtils;
+
+@RestController
+public class SpringCookieController {
+	
+	 @GetMapping("/create-spring-cookie")
+	    public ResponseEntity setCookie() {
+		 
+		 ResponseCookie resCookie = ResponseCookie.from("cookie-name", "spring-cookie")
+		            .httpOnly(true)
+		            .secure(true)
+		            .path("/")
+		            .maxAge(1 * 24 * 60 * 60)
+		            .domain("localhost")
+		            .build();
+
+	        return ResponseEntity.ok().header(HttpHeaders.SET_COOKIE, resCookie.toString()).build();
+
+	    }
+
+	    @GetMapping("/delete-spring-cookie")
+	    public ResponseEntity deleteCookie() {
+
+	        // create a cookie
+	    	 ResponseCookie resCookie = ResponseCookie.from("cookie-name", null)
+			            .build();
+
+		        return ResponseEntity.ok().header(HttpHeaders.SET_COOKIE, resCookie.toString()).build();
+
+	    }
+	    
+	    @GetMapping("/read-spring-cookie")
+	    public String readCookie(@CookieValue(name = "cookie-name", defaultValue = "default-spring-cookie") String cookieName) {
+	        return String.format("value of the cookie with name cookie-name is: %s", cookieName);
+	    }
+
+}

spring-boot/cookie-demo/src/main/java/io/reflectoring/cookie/utils/CookieUtil.java

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+package io.reflectoring.cookie.utils;
+
+import java.util.Arrays;
+import java.util.Optional;
+
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServletRequest;
+
+public class CookieUtil {
+	
+	public static Cookie createCookie(String name, String value, int expiry, boolean isSecure, boolean httpOnly, String path, String domain ) {
+		Cookie cookie = new Cookie(name, value);
+		cookie.setMaxAge(expiry);
+        cookie.setSecure(true);
+        cookie.setHttpOnly(httpOnly);
+        cookie.setPath(path); 
+        cookie.setDomain(domain);
+        return cookie;
+	}
+	
+	public static Optional<String> readCookie(HttpServletRequest request, String name) {
+        return Arrays.stream(request.getCookies())
+          .filter(cookie -> name.equals(cookie.getName()))
+          .map(Cookie::getValue)
+          .findAny();
+    }
+
+}

spring-boot/cookie-demo/src/main/resources/application.properties

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+server.port=9000
+server.address=0.0.0.0

spring-boot/cookie-demo/target/classes/application.properties

@@ -0,0 +1,2 @@
+server.port=9000
+server.address=0.0.0.0

spring-boot/cookie-demo/target/maven-archiver/pom.properties

@@ -0,0 +1,3 @@
+artifactId=cookie-demo
+groupId=io.reflectoring
+version=1.0.0-SNAPSHOT

spring-boot/cookie-demo/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst

@@ -0,0 +1,4 @@
+/home/godeo/Documents/docs/cookie/git/cookie-demo/src/main/java/io/reflectoring/cookie/controllers/SpringCookieController.java
+/home/godeo/Documents/docs/cookie/git/cookie-demo/src/main/java/io/reflectoring/cookie/controllers/ServletCookieController.java
+/home/godeo/Documents/docs/cookie/git/cookie-demo/src/main/java/io/reflectoring/cookie/application/CookieDemoApplication.java
+/home/godeo/Documents/docs/cookie/git/cookie-demo/src/main/java/io/reflectoring/cookie/utils/CookieUtil.java