Merge branch 'master' of https://github.com/eugenp/tutorials

2020-03-22 22:13:01 +02:00
parent adf1ee9b0d 538f07945a
commit 4ac705e532
489 changed files with 11377 additions and 1613 deletions
@@ -20,6 +20,7 @@
        <module>spring-boot-annotations</module>
        <module>spring-boot-artifacts</module>
        <module>spring-boot-autoconfiguration</module>
+        <module>spring-boot-basic-customization</module>
        <module>spring-boot-bootstrap</module>
        <module>spring-boot-client</module>
        <module>spring-boot-config-jpa-error</module>
@@ -0,0 +1,13 @@
+## Spring Boot Basic Customization
+
+This module contains articles about Spring Boot customization
+
+### Relevant Articles:
+
+ - [How to Change the Default Port in Spring Boot](https://www.baeldung.com/spring-boot-change-port)
+ - [Using Custom Banners in Spring Boot](https://www.baeldung.com/spring-boot-custom-banners)
+ - [Create a Custom FailureAnalyzer with Spring Boot](https://www.baeldung.com/spring-boot-failure-analyzer)
+ - [Spring Boot: Customize Whitelabel Error Page](https://www.baeldung.com/spring-boot-custom-error-page)
+ - [Spring Boot: Configuring a Main Class](https://www.baeldung.com/spring-boot-main-class)
+ - [How to Define a Spring Boot Filter?](https://www.baeldung.com/spring-boot-add-filter)
+ - [Guide to the Favicon in Spring Boot](https://www.baeldung.com/spring-boot-favicon)
@@ -0,0 +1,45 @@
+<?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-boot-basic-customization</artifactId>
+    <name>spring-boot-basic-customization</name>
+    <packaging>jar</packaging>
+    <description>Module For Spring Boot Basic Customization</description>
+
+    <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</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-thymeleaf</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <!-- The main class to start by executing "java -jar" -->
+        <start-class>com.baeldung.changeport.CustomApplication</start-class>
+    </properties>
+</project>
@@ -1,10 +1,8 @@
 package com.baeldung.bootcustomfilters;

-import org.springframework.boot.web.servlet.FilterRegistrationBean;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-
 import com.baeldung.bootcustomfilters.filters.RequestResponseLoggingFilter;
+import org.springframework.boot.web.servlet.FilterRegistrationBean;
+import org.springframework.context.annotation.Configuration;

@Configuration
 public class FilterConfig {
@@ -1,16 +1,15 @@
 package com.baeldung.bootcustomfilters.controller;

-import java.util.Arrays;
-import java.util.List;
-import java.util.UUID;
-
+import com.baeldung.bootcustomfilters.model.User;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;

-import com.baeldung.bootcustomfilters.model.User;
+import java.util.Arrays;
+import java.util.List;
+import java.util.UUID;

 /**
 * Rest controller for User
@@ -1,21 +1,15 @@
 package com.baeldung.bootcustomfilters.filters;

-import java.io.IOException;
-
-import javax.servlet.Filter;
-import javax.servlet.FilterChain;
-import javax.servlet.FilterConfig;
-import javax.servlet.ServletException;
-import javax.servlet.ServletRequest;
-import javax.servlet.ServletResponse;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.core.annotation.Order;
 import org.springframework.stereotype.Component;

+import javax.servlet.*;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
 /**
 * A servlet filter to log request and response
 * The logging implementation is pretty native and for demonstration only
@@ -1,20 +1,14 @@
 package com.baeldung.bootcustomfilters.filters;

-import java.io.IOException;
-
-import javax.servlet.Filter;
-import javax.servlet.FilterChain;
-import javax.servlet.FilterConfig;
-import javax.servlet.ServletException;
-import javax.servlet.ServletRequest;
-import javax.servlet.ServletResponse;
-import javax.servlet.http.HttpServletRequest;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.core.annotation.Order;
 import org.springframework.stereotype.Component;

+import javax.servlet.*;
+import javax.servlet.http.HttpServletRequest;
+import java.io.IOException;
+
 /**
 * A filter to create transaction before and commit it once request completes
 * The current implemenatation is just for demo
@@ -2,10 +2,8 @@ package com.baeldung.errorhandling;

 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.context.annotation.ComponentScan;

-@SpringBootApplication
-@ComponentScan(basePackages = "com.baeldung.errorhandling")
+@SpringBootApplication(scanBasePackages = "com.baeldung.errorhandling")
 public class ErrorHandlingApplication {

    public static void main(String [] args) {
@@ -1,10 +1,10 @@
 package com.baeldung.failureanalyzer;

-import javax.annotation.security.RolesAllowed;
-
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;

+import javax.annotation.security.RolesAllowed;
+
@SpringBootApplication
 public class FailureAnalyzerApplication {
    @RolesAllowed("*")
@@ -1,9 +1,9 @@
 package com.baeldung.failureanalyzer;

-import javax.annotation.Resource;
-
 import org.springframework.stereotype.Service;

+import javax.annotation.Resource;
+
@Service
 public class MyService {

@@ -0,0 +1,12 @@
+package com.baeldung.favicon;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class FaviconApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(FaviconApplication.class, args);
+    }
+}
@@ -1,8 +1,4 @@
-package com.baeldung.springbootmvc.config;
-
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
+package com.baeldung.favicon.config;

 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -14,8 +10,13 @@ import org.springframework.web.bind.annotation.ResponseBody;
 import org.springframework.web.servlet.handler.SimpleUrlHandlerMapping;
 import org.springframework.web.servlet.resource.ResourceHttpRequestHandler;

+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
@Configuration
 public class FaviconConfiguration {
+
    @Bean
    public SimpleUrlHandlerMapping myFaviconHandlerMapping() {
        SimpleUrlHandlerMapping mapping = new SimpleUrlHandlerMapping();
@@ -33,7 +34,7 @@ public class FaviconConfiguration {
        return requestHandler;
    }

-    // @Controller
+    //    @Controller
    static class FaviconController {

        @RequestMapping(value = "favicon.ico", method = RequestMethod.GET)
@@ -0,0 +1,10 @@
+#server
+server.port=9000
+spring.mvc.servlet.path=/
+server.servlet.context-path=/
+server.error.whitelabel.enabled=false
+
+#spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration
+
+#for Spring Boot 2.0+
+#spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration
@@ -0,0 +1,7 @@
+#spring.banner.charset=UTF-8
+#spring.banner.location=classpath:banner.txt
+#spring.banner.image.location=classpath:banner.gif
+#spring.banner.image.width= //TODO
+#spring.banner.image.height= //TODO
+#spring.banner.image.margin= //TODO
+#spring.banner.image.invert= //TODO
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<html>
+<body>
+<h1> Sorry, we couldn't find the page you were looking for. </h1>
+<p><a href="/">Go Home</a></p>
+</body>
+</html>
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+<body>
+<h1> Sorry, something went wrong! </h1>
+
+<h2>We're fixing it.</h2>
+<p><a href="/">Go Home</a></p>
+</body>
+</html>
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<html>
+<body>
+<h1> Something went wrong! </h1>
+<h2>Our Engineers are on it.</h2>
+<p><a href="/">Go Home</a></p>
+</body>
+</html>
@@ -0,0 +1,8 @@
+<html>
+	<head>
+		<title>RESOURCE NOT FOUND</title>
+	</head>
+	<body>
+		<h1>404 RESOURCE NOT FOUND</h1>
+	</body>
+</html>
@@ -0,0 +1,6 @@
+<html>
+<body>
+<h1>Welcome Home</h1>
+<p><strong>Success!</strong> It is working as we expected.</p>
+</body>
+</html>
@@ -1,18 +1,16 @@
 package com.baeldung.failureanalyzer;

-import static org.assertj.core.api.Assertions.assertThat;
-
-import java.util.Collection;
-import java.util.stream.Collectors;
-
+import ch.qos.logback.classic.spi.ILoggingEvent;
+import com.baeldung.failureanalyzer.utils.ListAppender;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.BeanCreationException;
 import org.springframework.boot.SpringApplication;

-import com.baeldung.failureanalyzer.utils.ListAppender;
+import java.util.Collection;
+import java.util.stream.Collectors;

-import ch.qos.logback.classic.spi.ILoggingEvent;
+import static org.assertj.core.api.Assertions.assertThat;

 public class FailureAnalyzerAppIntegrationTest {

@@ -1,11 +1,11 @@
 package com.baeldung.failureanalyzer.utils;

-import java.util.ArrayList;
-import java.util.List;
-
 import ch.qos.logback.classic.spi.ILoggingEvent;
 import ch.qos.logback.core.AppenderBase;

+import java.util.ArrayList;
+import java.util.List;
+
 public class ListAppender extends AppenderBase<ILoggingEvent> {
    
    static private List<ILoggingEvent> events = new ArrayList<>();
@@ -1,15 +1,15 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
    <include
-        resource="org/springframework/boot/logging/logback/base.xml" />
+            resource="org/springframework/boot/logging/logback/base.xml" />
    <appender name="LISTAPPENDER"
-        class="com.baeldung.failureanalyzer.utils.ListAppender">
+              class="com.baeldung.failureanalyzer.utils.ListAppender">
    </appender>
    <logger
-        name="org.springframework.boot.diagnostics.LoggingFailureAnalysisReporter">
+            name="org.springframework.boot.diagnostics.LoggingFailureAnalysisReporter">
        <appender-ref ref="LISTAPPENDER" />
    </logger>
    <root level="info">
        <appender-ref ref="CONSOLE" />
    </root>
-</configuration> 
+</configuration>
@@ -9,3 +9,4 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring

 - [Guide to ShedLock with Spring](https://www.baeldung.com/shedlock-spring)
 - [A Guide to the Problem Spring Web Library](https://www.baeldung.com/problem-spring-web)
+- [Generating Barcodes and QR Codes in Java](https://www.baeldung.com/java-generating-barcodes-qr-codes)
@@ -53,8 +53,41 @@
            <version>${shedlock.version}</version>
        </dependency>

+        <!-- Barcodes -->
+        <dependency>
+            <groupId>net.sourceforge.barbecue</groupId>
+            <artifactId>barbecue</artifactId>
+            <version>${barbecue.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>net.sf.barcode4j</groupId>
+            <artifactId>barcode4j</artifactId>
+            <version>${barcode4j.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.github.kenglxn.qrgen</groupId>
+            <artifactId>javase</artifactId>
+            <version>${qrgen.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.zxing</groupId>
+            <artifactId>core</artifactId>
+            <version>${zxing.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.zxing</groupId>
+            <artifactId>javase</artifactId>
+            <version>${zxing.version}</version>
+        </dependency>
    </dependencies>

+    <repositories>
+        <repository>
+            <id>jitpack.io</id>
+            <url>https://jitpack.io</url>
+        </repository>
+    </repositories>
+
    <build>
        <finalName>spring-boot-libraries</finalName>
        <resources>
@@ -153,6 +186,10 @@
        <modelmapper.version>2.3.2</modelmapper.version>
        <problem-spring-web.version>0.23.0</problem-spring-web.version>
        <shedlock.version>2.1.0</shedlock.version>
+        <barbecue.version>1.5-beta1</barbecue.version>
+        <barcode4j.version>2.1</barcode4j.version>
+        <qrgen.version>2.6.0</qrgen.version>
+        <zxing.version>3.3.0</zxing.version>
    </properties>

 </project>
@@ -0,0 +1,99 @@
+package com.baeldung.barcodes;
+
+import com.baeldung.barcodes.generators.BarbecueBarcodeGenerator;
+import com.baeldung.barcodes.generators.Barcode4jBarcodeGenerator;
+import com.baeldung.barcodes.generators.QRGenBarcodeGenerator;
+import com.baeldung.barcodes.generators.ZxingBarcodeGenerator;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.awt.image.BufferedImage;
+
+@RestController
+@RequestMapping("/barcodes")
+public class BarcodesController {
+
+    //Barbecue library
+
+    @GetMapping(value = "/barbecue/upca/{barcode}", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<BufferedImage> barbecueUPCABarcode(@PathVariable("barcode") String barcode) throws Exception {
+        return okResponse(BarbecueBarcodeGenerator.generateUPCABarcodeImage(barcode));
+    }
+
+    @GetMapping(value = "/barbecue/ean13/{barcode}", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<BufferedImage> barbecueEAN13Barcode(@PathVariable("barcode") String barcode) throws Exception {
+        return okResponse(BarbecueBarcodeGenerator.generateEAN13BarcodeImage(barcode));
+    }
+
+    @PostMapping(value = "/barbecue/code128", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<BufferedImage> barbecueCode128Barcode(@RequestBody String barcode) throws Exception {
+        return okResponse(BarbecueBarcodeGenerator.generateCode128BarcodeImage(barcode));
+    }
+
+    @PostMapping(value = "/barbecue/pdf417", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<BufferedImage> barbecuePDF417Barcode(@RequestBody String barcode) throws Exception {
+        return okResponse(BarbecueBarcodeGenerator.generatePDF417BarcodeImage(barcode));
+    }
+
+    //Barcode4j library
+
+    @GetMapping(value = "/barcode4j/upca/{barcode}", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<BufferedImage> barcode4jUPCABarcode(@PathVariable("barcode") String barcode) {
+        return okResponse(Barcode4jBarcodeGenerator.generateUPCABarcodeImage(barcode));
+    }
+
+    @GetMapping(value = "/barcode4j/ean13/{barcode}", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<BufferedImage> barcode4jEAN13Barcode(@PathVariable("barcode") String barcode) {
+        return okResponse(Barcode4jBarcodeGenerator.generateEAN13BarcodeImage(barcode));
+    }
+
+    @PostMapping(value = "/barcode4j/code128", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<BufferedImage> barcode4jCode128Barcode(@RequestBody String barcode) {
+        return okResponse(Barcode4jBarcodeGenerator.generateCode128BarcodeImage(barcode));
+    }
+
+    @PostMapping(value = "/barcode4j/pdf417", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<BufferedImage> barcode4jPDF417Barcode(@RequestBody String barcode) {
+        return okResponse(Barcode4jBarcodeGenerator.generatePDF417BarcodeImage(barcode));
+    }
+
+    //Zxing library
+
+    @GetMapping(value = "/zxing/upca/{barcode}", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<BufferedImage> zxingUPCABarcode(@PathVariable("barcode") String barcode) throws Exception {
+        return okResponse(ZxingBarcodeGenerator.generateUPCABarcodeImage(barcode));
+    }
+
+    @GetMapping(value = "/zxing/ean13/{barcode}", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<BufferedImage> zxingEAN13Barcode(@PathVariable("barcode") String barcode) throws Exception {
+        return okResponse(ZxingBarcodeGenerator.generateEAN13BarcodeImage(barcode));
+    }
+
+    @PostMapping(value = "/zxing/code128", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<BufferedImage> zxingCode128Barcode(@RequestBody String barcode) throws Exception {
+        return okResponse(ZxingBarcodeGenerator.generateCode128BarcodeImage(barcode));
+    }
+
+    @PostMapping(value = "/zxing/pdf417", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<BufferedImage> zxingPDF417Barcode(@RequestBody String barcode) throws Exception {
+        return okResponse(ZxingBarcodeGenerator.generatePDF417BarcodeImage(barcode));
+    }
+
+    @PostMapping(value = "/zxing/qrcode", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<BufferedImage> zxingQRCode(@RequestBody String barcode) throws Exception {
+        return okResponse(ZxingBarcodeGenerator.generateQRCodeImage(barcode));
+    }
+
+    //QRGen
+
+    @PostMapping(value = "/qrgen/qrcode", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<BufferedImage> qrgenQRCode(@RequestBody String barcode) throws Exception {
+        return okResponse(QRGenBarcodeGenerator.generateQRCodeImage(barcode));
+    }
+
+    private ResponseEntity<BufferedImage> okResponse(BufferedImage image) {
+        return new ResponseEntity<>(image, HttpStatus.OK);
+    }
+}
@@ -0,0 +1,23 @@
+package com.baeldung.barcodes;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.http.converter.BufferedImageHttpMessageConverter;
+import org.springframework.http.converter.HttpMessageConverter;
+
+import java.awt.image.BufferedImage;
+
+@SpringBootApplication
+public class SpringBootApp {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringBootApp.class, args);
+    }
+
+    @Bean
+    public HttpMessageConverter<BufferedImage> createImageHttpMessageConverter() {
+        return new BufferedImageHttpMessageConverter();
+    }
+
+}
@@ -0,0 +1,43 @@
+package com.baeldung.barcodes.generators;
+
+import net.sourceforge.barbecue.Barcode;
+import net.sourceforge.barbecue.BarcodeFactory;
+import net.sourceforge.barbecue.BarcodeImageHandler;
+
+import java.awt.*;
+import java.awt.image.BufferedImage;
+
+public class BarbecueBarcodeGenerator {
+
+    private static final Font BARCODE_TEXT_FONT = new Font(Font.SANS_SERIF, Font.PLAIN, 14);
+
+    public static BufferedImage generateUPCABarcodeImage(String barcodeText) throws Exception {
+        Barcode barcode = BarcodeFactory.createUPCA(barcodeText); //checksum is automatically added
+        barcode.setFont(BARCODE_TEXT_FONT);
+        barcode.setResolution(400);
+
+        return BarcodeImageHandler.getImage(barcode);
+    }
+
+    public static BufferedImage generateEAN13BarcodeImage(String barcodeText) throws Exception {
+        Barcode barcode = BarcodeFactory.createEAN13(barcodeText); //checksum is automatically added
+        barcode.setFont(BARCODE_TEXT_FONT);
+
+        return BarcodeImageHandler.getImage(barcode);
+    }
+
+    public static BufferedImage generateCode128BarcodeImage(String barcodeText) throws Exception {
+        Barcode barcode = BarcodeFactory.createCode128(barcodeText);
+        barcode.setFont(BARCODE_TEXT_FONT);
+
+        return BarcodeImageHandler.getImage(barcode);
+    }
+
+    public static BufferedImage generatePDF417BarcodeImage(String barcodeText) throws Exception {
+        Barcode barcode = BarcodeFactory.createPDF417(barcodeText);
+        barcode.setFont(BARCODE_TEXT_FONT);
+
+        return BarcodeImageHandler.getImage(barcode);
+    }
+
+}
@@ -0,0 +1,46 @@
+package com.baeldung.barcodes.generators;
+
+import org.krysalis.barcode4j.impl.code128.Code128Bean;
+import org.krysalis.barcode4j.impl.pdf417.PDF417Bean;
+import org.krysalis.barcode4j.impl.upcean.EAN13Bean;
+import org.krysalis.barcode4j.impl.upcean.UPCABean;
+import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;
+
+import java.awt.image.BufferedImage;
+
+public class Barcode4jBarcodeGenerator {
+
+    public static BufferedImage generateUPCABarcodeImage(String barcodeText) {
+        UPCABean barcodeGenerator = new UPCABean();
+        BitmapCanvasProvider canvas = new BitmapCanvasProvider(160, BufferedImage.TYPE_BYTE_BINARY, false, 0);
+
+        barcodeGenerator.generateBarcode(canvas, barcodeText);
+        return canvas.getBufferedImage();
+    }
+
+    public static BufferedImage generateEAN13BarcodeImage(String barcodeText) {
+        EAN13Bean barcodeGenerator = new EAN13Bean();
+        BitmapCanvasProvider canvas = new BitmapCanvasProvider(160, BufferedImage.TYPE_BYTE_BINARY, false, 0);
+
+        barcodeGenerator.generateBarcode(canvas, barcodeText);
+        return canvas.getBufferedImage();
+    }
+
+    public static BufferedImage generateCode128BarcodeImage(String barcodeText) {
+        Code128Bean barcodeGenerator = new Code128Bean();
+        BitmapCanvasProvider canvas = new BitmapCanvasProvider(160, BufferedImage.TYPE_BYTE_BINARY, false, 0);
+
+        barcodeGenerator.generateBarcode(canvas, barcodeText);
+        return canvas.getBufferedImage();
+    }
+
+    public static BufferedImage generatePDF417BarcodeImage(String barcodeText) {
+        PDF417Bean barcodeGenerator = new PDF417Bean();
+        BitmapCanvasProvider canvas = new BitmapCanvasProvider(160, BufferedImage.TYPE_BYTE_BINARY, false, 0);
+        barcodeGenerator.setColumns(10);
+
+        barcodeGenerator.generateBarcode(canvas, barcodeText);
+        return canvas.getBufferedImage();
+    }
+
+}
@@ -0,0 +1,21 @@
+package com.baeldung.barcodes.generators;
+
+import net.glxn.qrgen.javase.QRCode;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+
+public class QRGenBarcodeGenerator {
+
+    public static BufferedImage generateQRCodeImage(String barcodeText) throws Exception {
+        ByteArrayOutputStream stream = QRCode
+                .from(barcodeText)
+                .withSize(250, 250)
+                .stream();
+        ByteArrayInputStream bis = new ByteArrayInputStream(stream.toByteArray());
+
+        return ImageIO.read(bis);
+    }
+}
@@ -0,0 +1,51 @@
+package com.baeldung.barcodes.generators;
+
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.client.j2se.MatrixToImageWriter;
+import com.google.zxing.common.BitMatrix;
+import com.google.zxing.oned.Code128Writer;
+import com.google.zxing.oned.EAN13Writer;
+import com.google.zxing.oned.UPCAWriter;
+import com.google.zxing.pdf417.PDF417Writer;
+import com.google.zxing.qrcode.QRCodeWriter;
+
+import java.awt.image.BufferedImage;
+
+public class ZxingBarcodeGenerator {
+
+    public static BufferedImage generateUPCABarcodeImage(String barcodeText) throws Exception {
+        UPCAWriter barcodeWriter = new UPCAWriter();
+        BitMatrix bitMatrix = barcodeWriter.encode(barcodeText, BarcodeFormat.UPC_A, 300, 150);
+
+        return MatrixToImageWriter.toBufferedImage(bitMatrix);
+    }
+
+    public static BufferedImage generateEAN13BarcodeImage(String barcodeText) throws Exception {
+        EAN13Writer barcodeWriter = new EAN13Writer();
+        BitMatrix bitMatrix = barcodeWriter.encode(barcodeText, BarcodeFormat.EAN_13, 300, 150);
+
+        return MatrixToImageWriter.toBufferedImage(bitMatrix);
+    }
+
+    public static BufferedImage generateCode128BarcodeImage(String barcodeText) throws Exception {
+        Code128Writer barcodeWriter = new Code128Writer();
+        BitMatrix bitMatrix = barcodeWriter.encode(barcodeText, BarcodeFormat.CODE_128, 300, 150);
+
+        return MatrixToImageWriter.toBufferedImage(bitMatrix);
+    }
+
+    public static BufferedImage generatePDF417BarcodeImage(String barcodeText) throws Exception {
+        PDF417Writer barcodeWriter = new PDF417Writer();
+        BitMatrix bitMatrix = barcodeWriter.encode(barcodeText, BarcodeFormat.PDF_417, 700, 700);
+
+        return MatrixToImageWriter.toBufferedImage(bitMatrix);
+    }
+
+    public static BufferedImage generateQRCodeImage(String barcodeText) throws Exception {
+        QRCodeWriter barcodeWriter = new QRCodeWriter();
+        BitMatrix bitMatrix = barcodeWriter.encode(barcodeText, BarcodeFormat.QR_CODE, 200, 200);
+
+        return MatrixToImageWriter.toBufferedImage(bitMatrix);
+    }
+
+}
@@ -4,7 +4,6 @@ This module contains articles about Spring Web MVC in Spring Boot projects.

 ### Relevant Articles:

- [Guide to the Favicon in Spring Boot](https://www.baeldung.com/spring-boot-favicon)
 - [Custom Validation MessageSource in Spring Boot](https://www.baeldung.com/spring-custom-validation-message-source)
 - [Display RSS Feed with Spring MVC](https://www.baeldung.com/spring-mvc-rss-feed)
 - [A Controller, Service and DAO Example with Spring Boot and JSF](https://www.baeldung.com/jsf-spring-boot-controller-service-dao)
@@ -8,7 +8,6 @@ This module contains articles about administering a Spring Boot runtime
 - [Logging HTTP Requests with Spring Boot Actuator HTTP Tracing](https://www.baeldung.com/spring-boot-actuator-http)
 - [How to Disable Console Logging in Spring Boot](https://www.baeldung.com/spring-boot-disable-console-logging)
 - [Spring Boot Embedded Tomcat Logs](https://www.baeldung.com/spring-boot-embedded-tomcat-logs) 
- - [How to Change the Default Port in Spring Boot](https://www.baeldung.com/spring-boot-change-port)
 - [Project Configuration with Spring](https://www.baeldung.com/project-configuration-with-spring)
 - [CORS with Spring](https://www.baeldung.com/spring-cors)
 - [Spring – Log Incoming Requests](https://www.baeldung.com/spring-http-logging)
@@ -1,7 +1,8 @@
 <?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">
+<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>
    <artifactId>spring-boot-springdoc</artifactId>
    <version>0.0.1-SNAPSHOT</version>
@@ -16,11 +17,6 @@
        <relativePath>../../parent-boot-2</relativePath>
    </parent>

-    <properties>
-        <java.version>1.8</java.version>
-        <springdoc.version>1.2.32</springdoc.version>
-    </properties>
-
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
@@ -63,6 +59,11 @@
        </plugins>
    </build>

+    <properties>
+        <java.version>1.8</java.version>
+        <springdoc.version>1.2.32</springdoc.version>
+    </properties>
+
    <profiles>
        <profile>
            <id>integration</id>
@@ -11,9 +11,7 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
 - [The @ServletComponentScan Annotation in Spring Boot](https://www.baeldung.com/spring-servletcomponentscan)
 - [How to Register a Servlet in Java](https://www.baeldung.com/register-servlet)
 - [Guide to Spring WebUtils and ServletRequestUtils](https://www.baeldung.com/spring-webutils-servletrequestutils)
- [Using Custom Banners in Spring Boot](https://www.baeldung.com/spring-boot-custom-banners)
 - [Guide to Internationalization in Spring Boot](https://www.baeldung.com/spring-boot-internationalization)
- [Create a Custom FailureAnalyzer with Spring Boot](https://www.baeldung.com/spring-boot-failure-analyzer)
 - [Dynamic DTO Validation Config Retrieved from the Database](https://www.baeldung.com/spring-dynamic-dto-validation)
 - [Custom Information in Spring Boot Info Endpoint](https://www.baeldung.com/spring-boot-info-actuator-custom)
 - [Testing in Spring Boot](https://www.baeldung.com/spring-boot-testing)
@@ -22,11 +20,8 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
 - [Getting Started with GraphQL and Spring Boot](https://www.baeldung.com/spring-graphql)
 - [Guide to Spring Type Conversions](https://www.baeldung.com/spring-type-conversions)
 - [An Introduction to Kong](https://www.baeldung.com/kong)
- [Spring Boot: Customize Whitelabel Error Page](https://www.baeldung.com/spring-boot-custom-error-page)
 - [Spring Boot: Configuring a Main Class](https://www.baeldung.com/spring-boot-main-class)
 - [A Quick Intro to the SpringBootServletInitializer](https://www.baeldung.com/spring-boot-servlet-initializer)
- [How to Define a Spring Boot Filter?](https://www.baeldung.com/spring-boot-add-filter)
- [Spring Boot Exit Codes](https://www.baeldung.com/spring-boot-exit-codes)
 - [Guide to the Favicon in Spring Boot](https://www.baeldung.com/spring-boot-favicon)
 - [Spring Shutdown Callbacks](https://www.baeldung.com/spring-shutdown-callbacks)
 - [Container Configuration in Spring Boot 2](https://www.baeldung.com/embeddedservletcontainercustomizer-configurableembeddedservletcontainer-spring-boot)
@@ -1,10 +1,4 @@
 #server
 server.port=9000
 server.servlet-path=/
-server.context-path=/
-#server.error.whitelabel.enabled=false
-
-#spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration
-
-#for Spring Boot 2.0+
-#spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration
+server.context-path=/
@@ -33,12 +33,4 @@ logging.level.org.springframework=INFO
 servlet.name=dispatcherExample
 servlet.mapping=/dispatcherExampleURL

-#spring.banner.charset=UTF-8
-#spring.banner.location=classpath:banner.txt
-#spring.banner.image.location=classpath:banner.gif
-#spring.banner.image.width= //TODO
-#spring.banner.image.height= //TODO
-#spring.banner.image.margin= //TODO
-#spring.banner.image.invert= //TODO
-
 contactInfoType=email
@@ -1,14 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous" />
-	<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" />
-</head>
-<body>
-<div class="container">
-<div class="jumbotron" >
-<h1 class="text-center"><i class="fa fa-frown-o"> </i>   Sorry, we couldn't find the page you were looking for. </h1>
-<p class="text-center"><a class="btn btn-primary" href="/"><i class="fa fa-home"></i>Go Home</a></p>
-</div></div>
-</body>
-</html>
@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous" />
-	<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" />
-</head>
-<body>
-<div class="container">
-<div class="jumbotron" >
-<h1 class="text-center"><i class="fa fa-frown-o"> </i>   Sorry, something went wrong! </h1>
-
-<h2 class="text-center">We're fixing it.</h2>
-<p class="text-center"><a class="btn btn-primary" href="/"><i class="fa fa-home"></i>Go Home</a></p>
-</div></div>
-</body>
-</html>