I am getting the following error :
Access to XMLHttpRequest at ‘http://localhost:8080/basicauth’ from origin ‘http://localhost:4200’ has been blocked by CORS policy: Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.

How do I resolve this issue…

Here is the Github link to my project:

https://github.com/nayaksofia/todoAppOne.git

For configuration, I did this:

package com.in28minutes.rest.webservices.restfulwebservices.basic.auth;


public class AuthenticationBean {

private String message;

public AuthenticationBean(String message) {
    this.message = message;
}

public String getMessage() {
    return message;
}

public void setMessage(String message) {
    this.message = message;
}

@Override
public String toString() {
    return String.format("HelloWorldBean [message=%s]", message);
}

}

package com.in28minutes.rest.webservices.restfulwebservices.basic.auth;

import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

//Controller
@CrossOrigin(origins="http://localhost:4200")
@RestController
public class BasicAuthenticationController {

    @GetMapping(path = "/basicauth")
    public AuthenticationBean helloWorldBean() {
        //throw new RuntimeException("Some Error has Happened! Contact Support at ***-***");
        return new AuthenticationBean("You are authenticated");
    }   
}

/*Remember:
 * We can replace RequestMapping() method with respective request like 
 * @GetMapping() , @PostMapping() etc. 
 * 
 */

package com.in28minutes.rest.webservices.restfulwebservices.basic.auth;
import static org.springframework.security.config.Customizer.withDefaults;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.web.SecurityFilterChain;

@Configuration
@EnableWebSecurity
@EnableMethodSecurity
public class SpringSecurityConfigurationBasicAuth {

    @Bean
    SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
        http.authorizeHttpRequests(auth -> auth.requestMatchers(HttpMethod.OPTIONS, "/**").permitAll());

        http.csrf(csrf -> csrf.disable());

        http.httpBasic(withDefaults());

        return http.build();
    }

}

package com.in28minutes.rest.webservices.restfulwebservices.basic.auth.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class WebConfig implements WebMvcConfigurer {

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOrigins("http://localhost:4200")
                .allowedMethods(HttpMethod.GET.name(),
                        HttpMethod.POST.name(),
                        HttpMethod.PUT.name(),
                        HttpMethod.DELETE.name())
                .allowedHeaders(HttpHeaders.CONTENT_TYPE,
                        HttpHeaders.AUTHORIZATION);
    }

-------------------------

My POM.XML File:

     <?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>
    
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.2.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    
    <groupId>com.sofi.rest.webservices</groupId>
    <artifactId>restful-web-services</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>restful-web-services</name>
    <description>Demo project for Spring Boot</description>
    
    <properties>
        <java.version>17</java.version>
    </properties>
    
    <dependencies>
        
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</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-security</artifactId>
        </dependency>
         
         
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>runtime</scope>
        </dependency>
        
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

Please help me to resolve this issue.
Thank you.