BAEL-7470 (#16035)

* BAEL-7470 initial commit

* BAEL-7470 changed file name

* BAEL-7470 new module

* BAEL-7470 new module

* BAEL-7470 remove spring-core 4

spring-boot-modules/spring-boot-basic-customization-3/README.md

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+## Spring Boot Basic Customization 3
+
+This module contains articles about Spring Boot customization 3
+
+### Relevant Articles:

spring-boot-modules/spring-boot-basic-customization-3/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>spring-boot-basic-customization-3</artifactId>
+    <name>spring-boot-basic-customization-3</name>
+    <packaging>jar</packaging>
+    <description>Module For Spring Boot Basic Customization 3</description>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-boot-3</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-3</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <finalName>springStartupApp</finalName>
+                    <mainClass>com.baeldung.springStart.SpringStartApplication</mainClass>
+                </configuration>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>repackage</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

spring-boot-modules/spring-boot-basic-customization-3/src/main/java/com/baeldung/filter/AppConfig.java

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+package com.baeldung.filter;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.web.servlet.FilterRegistrationBean;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.filter.DelegatingFilterProxy;
+
+@Configuration
+public class AppConfig {
+
+    @Bean
+    public FilterRegistrationBean<DelegatingFilterProxy> loggingFilterDelegatingProxy() {
+        FilterRegistrationBean<DelegatingFilterProxy> registrationBean = new FilterRegistrationBean<>();
+        registrationBean.setFilter(new DelegatingFilterProxy("loggingFilterDelegateProxy"));
+        registrationBean.addUrlPatterns("/*");
+        return registrationBean;
+    }
+
+    @Bean
+    @Autowired
+    public FilterRegistrationBean<LoggingFilterRegistrationBean> loggingFilterRegistration(LoggingService loggingService) {
+        FilterRegistrationBean<LoggingFilterRegistrationBean> registrationBean = new FilterRegistrationBean<>();
+        registrationBean.setFilter(new LoggingFilterRegistrationBean(loggingService));
+        registrationBean.addUrlPatterns("/*");
+        return registrationBean;
+    }
+
+
+}

spring-boot-modules/spring-boot-basic-customization-3/src/main/java/com/baeldung/filter/LoggingFilterAutowiringSupport.java

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+package com.baeldung.filter;
+
+import java.io.IOException;
+
+import jakarta.servlet.FilterChain;
+import jakarta.servlet.Filter;
+import jakarta.servlet.FilterConfig;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.ServletRequest;
+import jakarta.servlet.ServletResponse;
+import jakarta.servlet.http.HttpServletRequest;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.web.context.support.SpringBeanAutowiringSupport;
+
+@Component
+public class LoggingFilterAutowiringSupport implements Filter {
+
+    @Autowired
+    LoggingService loggingService;
+
+    @Override
+    public void init(FilterConfig filterConfig) {
+        SpringBeanAutowiringSupport.processInjectionBasedOnServletContext(this,
+            filterConfig.getServletContext());
+    }
+
+    @Override
+    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
+        HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
+        loggingService.log(httpServletRequest.getMethod(), httpServletRequest.getRequestURI());
+        filterChain.doFilter(servletRequest, servletResponse);
+    }
+}

spring-boot-modules/spring-boot-basic-customization-3/src/main/java/com/baeldung/filter/LoggingFilterDelegatingFilterProxy.java

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+package com.baeldung.filter;
+
+import java.io.IOException;
+
+import jakarta.servlet.FilterChain;
+import jakarta.servlet.Filter;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.ServletRequest;
+import jakarta.servlet.ServletResponse;
+import jakarta.servlet.http.HttpServletRequest;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component("loggingFilterDelegateProxy")
+public class LoggingFilterDelegatingFilterProxy implements Filter {
+
+    @Autowired
+    LoggingService loggingService;
+
+    @Override
+    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
+        HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
+        loggingService.log(httpServletRequest.getMethod(), httpServletRequest.getRequestURI());
+        filterChain.doFilter(servletRequest, servletResponse);
+    }
+}

spring-boot-modules/spring-boot-basic-customization-3/src/main/java/com/baeldung/filter/LoggingFilterRegistrationBean.java

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+package com.baeldung.filter;
+
+import java.io.IOException;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.web.context.support.SpringBeanAutowiringSupport;
+
+import jakarta.servlet.Filter;
+import jakarta.servlet.FilterChain;
+import jakarta.servlet.FilterConfig;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.ServletRequest;
+import jakarta.servlet.ServletResponse;
+import jakarta.servlet.http.HttpServletRequest;
+
+@Component
+public class LoggingFilterRegistrationBean implements Filter {
+
+    private LoggingService loggingService;
+
+    public LoggingFilterRegistrationBean(LoggingService loggingService) {
+        this.loggingService = loggingService;
+    }
+
+    @Override
+    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
+        HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
+        loggingService.log(httpServletRequest.getMethod(), httpServletRequest.getRequestURI());
+        filterChain.doFilter(servletRequest, servletResponse);
+    }
+}

spring-boot-modules/spring-boot-basic-customization-3/src/main/java/com/baeldung/filter/LoggingFilterWebApplicationContext.java

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+package com.baeldung.filter;
+
+import java.io.IOException;
+
+import jakarta.servlet.FilterChain;
+import jakarta.servlet.Filter;
+import jakarta.servlet.FilterConfig;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.ServletRequest;
+import jakarta.servlet.ServletResponse;
+import jakarta.servlet.http.HttpServletRequest;
+
+import org.springframework.stereotype.Component;
+import org.springframework.web.context.support.WebApplicationContextUtils;
+
+@Component
+public class LoggingFilterWebApplicationContext implements Filter {
+
+    private LoggingService loggingService;
+
+    @Override
+    public void init(FilterConfig filterConfig) {
+        loggingService = WebApplicationContextUtils
+            .getRequiredWebApplicationContext(filterConfig.getServletContext())
+            .getBean(LoggingService.class);
+    }
+
+    @Override
+    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
+        HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
+        loggingService.log(httpServletRequest.getMethod(), httpServletRequest.getRequestURI());
+        filterChain.doFilter(servletRequest, servletResponse);
+    }
+}

spring-boot-modules/spring-boot-basic-customization-3/src/main/java/com/baeldung/filter/LoggingService.java

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+package com.baeldung.filter;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+
+@Service
+public class LoggingService {
+
+    private final Logger logger = LoggerFactory.getLogger(this.getClass());
+    public void log(String message,String url){
+        logger.info("Logging Request {} for URI : {}",message,url);
+    }
+}

spring-boot-modules/spring-boot-basic-customization-3/src/main/java/com/baeldung/filter/SpringBootFilterStartApp.java

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

spring-boot-modules/spring-boot-basic-customization-3/src/main/java/com/baeldung/filter/User.java

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+package com.baeldung.filter;
+
+public class User {
+
+    private String id;
+    private String name;
+    private String email;
+
+    public User(String id, String name, String email) {
+        this.id = id;
+        this.name = name;
+        this.email = email;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+}

spring-boot-modules/spring-boot-basic-customization-3/src/main/java/com/baeldung/filter/UserController.java

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+package com.baeldung.filter;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class UserController {
+
+    @GetMapping("/users")
+    public List<User> getUsers(){
+        return Arrays.asList(new User("1","John","john@email.com"),
+            new User("2","Smith","smith@email.com"));
+    }
+}

spring-boot-modules/spring-boot-basic-customization-3/src/main/java/com/baeldung/springStart/SpringStartApplication.java

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

spring-boot-modules/spring-boot-basic-customization-3/src/test/java/com/baeldung/filter/LoggingFilterAutowiringSupportUnitTest.java

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+package com.baeldung.filter;
+
+import java.lang.reflect.Field;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class LoggingFilterAutowiringSupportUnitTest {
+
+    @Autowired
+    private LoggingFilterAutowiringSupport loggingFilter;
+
+    @Test
+    public void givenFilter_whenAutowired_thenDependencyInjected() throws Exception {
+        Assert.assertNotNull(loggingFilter);
+        Assert.assertNotNull(getField(loggingFilter,"loggingService"));
+    }
+
+    private Object getField(Object target, String fieldName) throws NoSuchFieldException, IllegalAccessException {
+        Field field = target.getClass().getDeclaredField(fieldName);
+        field.setAccessible(true);
+        return field.get(target);
+    }
+}

spring-boot-modules/spring-boot-basic-customization-3/src/test/java/com/baeldung/filter/LoggingFilterDelegatingFilterProxyUnitTest.java

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+package com.baeldung.filter;
+
+import java.lang.reflect.Field;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class LoggingFilterDelegatingFilterProxyUnitTest {
+
+    @Autowired
+    private LoggingFilterDelegatingFilterProxy loggingFilter;
+
+    @Test
+    public void testLoggingFilter() throws Exception {
+        Assert.assertNotNull(loggingFilter);
+        Assert.assertNotNull(getField(loggingFilter,"loggingService"));
+    }
+
+    private Object getField(Object target, String fieldName) throws NoSuchFieldException, IllegalAccessException {
+        Field field = target.getClass().getDeclaredField(fieldName);
+        field.setAccessible(true);
+        return field.get(target);
+    }
+}

spring-boot-modules/spring-boot-basic-customization-3/src/test/java/com/baeldung/filter/LoggingFilterRegistrationBeanUnitTest.java

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+package com.baeldung.filter;
+
+import java.lang.reflect.Field;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class LoggingFilterRegistrationBeanUnitTest {
+
+    @Autowired
+    private LoggingFilterRegistrationBean loggingFilter;
+
+    @Test
+    public void testLoggingFilter() throws Exception {
+        Assert.assertNotNull(loggingFilter);
+        Assert.assertNotNull(getField(loggingFilter,"loggingService"));
+    }
+
+    private Object getField(Object target, String fieldName) throws NoSuchFieldException, IllegalAccessException {
+        Field field = target.getClass().getDeclaredField(fieldName);
+        field.setAccessible(true);
+        return field.get(target);
+    }
+}