README.md

Spring JWT Authenticator

This library is a standalone implementation of JWT (Json Web Token) authentication into Spring Security.

Usage

Login:

To login, do a POST request to '/login'

{
    "username": "user"
    "password": "pwd"
}

Each response from the server, when successfully authenticated, contains the following header:

Authorization: Bearer eyJhbGciOiJIUz...

Refresh this token locally each response received to ensure you stay authenticated. Add this header to each request to the server.

Dependency

Maven:

<repositories>
    <repository>
    	<id>jitpack.io</id>
    	<url>https://jitpack.io</url>
	</repository>
</repositories>

<dependency>
    <groupId>com.github.ESchouten</groupId>
    <artifactId>Spring-Security-JWT-Plugin</artifactId>
    <version>${jwt.version}</version>
</dependency>

Gradle:

repositories {
	maven { url 'https://jitpack.io' }
}

dependencies {
	implementation 'com.github.ESchouten:Spring-Security-JWT-Plugin:$jwt.version'
}

Implementation

To use this library, you have to implement it into your Spring Security configuration.

Example:

    /**
     * The [JWTSecurityContextRepository] is responsible for
     * storing and retrieving JWTs in and from HTTP headers.
     */
    @Bean
    public JWTSecurityContextRepository jwtSecurityContextRepository() {
        return new JWTSecurityContextRepository(appUserUtil);
    }

    /**
     * The [APIAuthenticationFilter] is responsible for validating
     * username and password combinations when provided through the API.
     * (It is essentially the API version of a login form.)
     */
    @Bean
    public APIAuthenticationFilter apiAuthenticationFilter() throws Exception {
        APIAuthenticationFilter aaf = new APIAuthenticationFilter();
        aaf.setAuthenticationManager(super.authenticationManager());
        return aaf;
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                .securityContext().securityContextRepository(jwtSecurityContextRepository())
                .and()
                .csrf()
                .disable()
                .authorizeRequests()

                .mvcMatchers(HttpMethod.POST, "/login").permitAll()
                
                **Etc**

Built with

• Spring Security - https://spring.io/
• JJWT - https://www.jsonwebtoken.io/