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feat(console): add api guide for spring boot (#4517)

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import Tabs from '@mdx/components/Tabs';
import TabItem from '@mdx/components/TabItem';
import InlineNotification from '@/ds-components/InlineNotification';
import Steps from '@/mdx-components/Steps';
import Step from '@/mdx-components/Step';
import { appendPath } from '@silverhand/essentials';
<Steps>
<Step title="Start a Spring Boot project">
With [Spring Initializr](https://start.spring.io/), you can quickly start a Spring Boot project.
Use the following options:
- Gradle Project
- Language: Java
- Spring Boot: 2.7.2 or above
Generate and open the project.
</Step>
<Step title="Add dependencies">
Add the dependencies to your Gradle project build file `build.gradle`:
```groovy
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-web'
implementation 'org.springframework.boot:spring-boot-starter-oauth2-resource-server'
}
```
<InlineNotification>
Since Spring Boot and Spring Security have built-in support for both OAuth2 resource server and JWT validation,
you DO NOT need to add additional libraries from Logto to integrate.
See [Spring Security OAuth 2.0 Resource Server](https://docs.spring.io/spring-security/reference/servlet/oauth2/resource-server/index.html)
and [Spring Security Architecture](https://spring.io/guides/topicals/spring-security-architecture)
for more details.
</InlineNotification>
</Step>
<Step title="Get issuer and JWKS URI">
All tokens are issued by the [issuer](https://openid.net/specs/openid-connect-core-1_0.html#IssuerIdentifier),
and signed with [JWK](https://datatracker.ietf.org/doc/html/rfc7517)
(See [JWS](https://datatracker.ietf.org/doc/html/rfc7515) for more details).
Before moving on, you will need to get an issuer and a JWKS URI to verify the issuer and the signature of the Bearer Token (`access_token`).
<p>
All the Logto Authorization server configurations can be found by requesting <code>{appendPath(props.endpoint, '/oidc/.well-known/openid-configuration')}</code>, including the <strong>issuer</strong>, <strong>jwks_uri</strong> and other authorization configs.
</p>
An example of the response:
<pre>
<code className="language-json">
{`{
// ...
"issuer": "${appendPath(props.endpoint, '/oidc')}",
"jwks_uri": "${appendPath(props.endpoint, '/oidc/jwks')}"
// ...
}`}
</code>
</pre>
</Step>
<Step title="Configure application">
Use an `application.yml` file (instead of the default `application.properties`) to configure the server port, audience, and OAuth2 resource server.
<pre>
<code className="language-yaml">
{`# path/to/project/src/main/resources/application.yaml
server:
port: 3000
logto:
audience: ${props.audience}
spring:
security:
oauth2:
resourceserver:
jwt:
issuer-uri: ${appendPath(props.endpoint, '/oidc')}
jwk-set-uri: ${appendPath(props.endpoint, '/oidc/jwks')}`}
</code>
</pre>
- `audience`: The unique API identifier of your protected API resource.
- `spring.security.oauth2.resourceserver.jwt.issuer-uri`: The iss claim value and the issuer URI in the JWT issued by Logto.
- `spring.security.oauth2.resourceserver.jwt.jwk-set-uri`: Spring Security uses this URI to get the authorization server's public keys to validate JWT signatures.
</Step>
<Step title="Provide audience validator">
Provide your own `AudienceValidator` class that implements the `OAuth2TokenValidator` interface to validate whether the required audience is present in the JWT.
```java
// path/to/project/src/main/java/io/logto/springboot/sample/validator/AudienceValidator.java
package io.logto.springboot.sample.validator;
import org.springframework.security.oauth2.core.OAuth2Error;
import org.springframework.security.oauth2.core.OAuth2TokenValidator;
import org.springframework.security.oauth2.core.OAuth2TokenValidatorResult;
import org.springframework.security.oauth2.jwt.Jwt;
public class AudienceValidator implements OAuth2TokenValidator<Jwt> {
private final OAuth2Error oAuth2Error = new OAuth2Error("invalid_token", "Required audience not found", null);
private final String audience;
public AudienceValidator(String audience) {
this.audience = audience;
}
@Override
public OAuth2TokenValidatorResult validate(Jwt jwt) {
if (!jwt.getAudience().contains(audience)) {
return OAuth2TokenValidatorResult.failure(oAuth2Error);
}
return OAuth2TokenValidatorResult.success();
}
}
```
<InlineNotification>
For <a href="https://docs.logto.io/docs/recipes/rbac/" target="_blank" rel="noopener">🔐 RBAC</a>, scope validation is also required.
</InlineNotification>
</Step>
<Step title="Configure Spring Security">
Spring Security makes it easy to configure your application as a resource server and validate the JWT from the Bearer Token in the request header.
You need to provide instances of `JwtDecoder` and `SecurityFilterChain` (as Spring beans), and add the `@EnableWebSecurity` annotation.
```java
// path/to/project/src/main/java/io/logto/springboot/sample/configuration/SecurityConfiguration.java
package io.logto.springboot.sample.configuration;
import com.nimbusds.jose.JOSEObjectType;
import com.nimbusds.jose.proc.DefaultJOSEObjectTypeVerifier;
import com.nimbusds.jose.proc.SecurityContext;
import io.logto.springboot.sample.validator.AudienceValidator;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configurers.oauth2.server.resource.OAuth2ResourceServerConfigurer;
import org.springframework.security.oauth2.core.DelegatingOAuth2TokenValidator;
import org.springframework.security.oauth2.core.OAuth2TokenValidator;
import org.springframework.security.oauth2.jwt.Jwt;
import org.springframework.security.oauth2.jwt.JwtDecoder;
import org.springframework.security.oauth2.jwt.JwtValidators;
import org.springframework.security.oauth2.jwt.NimbusJwtDecoder;
import org.springframework.security.web.SecurityFilterChain;
@EnableWebSecurity
public class SecurityConfiguration {
@Value("${logto.audience}")
private String audience;
@Value("${spring.security.oauth2.resourceserver.jwt.issuer-uri}")
private String issuer;
@Value("${spring.security.oauth2.resourceserver.jwt.jwk-set-uri}")
private String jwksUri;
@Bean
public JwtDecoder jwtDecoder() {
NimbusJwtDecoder jwtDecoder = NimbusJwtDecoder.withJwkSetUri(jwksUri)
// The decoder should support the token type: Access Token + JWT.
.jwtProcessorCustomizer(customizer -> customizer.setJWSTypeVerifier(
new DefaultJOSEObjectTypeVerifier<SecurityContext>(new JOSEObjectType("at+jwt"))))
.build();
jwtDecoder.setJwtValidator(new DelegatingOAuth2TokenValidator<>(
new AudienceValidator(audience),
new JwtIssuerValidator(issuer),
new JwtTimestampValidator()));
return jwtDecoder;
}
@Bean
public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
http.oauth2ResourceServer(OAuth2ResourceServerConfigurer::jwt).cors().and()
.authorizeRequests(customizer -> customizer
// Only authenticated requests can access your protected APIs
.mvcMatchers("/", "/secret").authenticated()
// Anyone can access the public profile.
.mvcMatchers("/profile").permitAll()
);
return http.build();
}
}
```
</Step>
<Step title="Add APIs">
Add a controller to provide the protected and public APIs:
```java
// path/to/project/src/main/java/io/logto/springboot/sample/controller/ProtectedController.java
package io.logto.springboot.sample.controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
// Only allow all origins for the sample.
// (Production applications should configure CORS carefully.)
@CrossOrigin(origins = "*")
@RestController
public class ProtectedController {
@GetMapping("/")
public String protectedRoot() {
return "Protected root.";
}
@GetMapping("/secret")
public String protectedSecret() {
return "Protected secret.";
}
@GetMapping("/profile")
public String publicProfile() {
return "Public profile.";
}
}
```
</Step>
<Step title="Access protected API">
Build and run your Spring Boot web application, e.g. execute the bootRun Gradle task.
<Tabs>
<TabItem value="linux" label="Linux or macOS">
```bash
./gradlew bootRun
```
</TabItem>
<TabItem value="windows" label="Windows">
```bash
gradlew.bat bootRun
```
</TabItem>
</Tabs>
Request your protected API with the Access Token as the Bearer token in the Authorization header, e.g. execute the `curl` command.
<pre>
<code className="language-bash">
{`curl --include '${appendPath(props.endpoint, '/secret')}' \\
--header 'Authorization: Bearer <your-access-token>'`}
</code>
</pre>
If successful, you will get a response with 200 status:
```bash
HTTP/1.1 200
...
```
Otherwise, you will get a response with 401 status like this:
```bash
HTTP/1.1 401
...
WWW-Authenticate: Bearer error="invalid_token", error_description="An error occurred while attempting to decode the Jwt: Signed JWT rejected: Invalid signature", error_uri="https://tools.ietf.org/html/rfc6750#section-3.1"
...
```
</Step>
<Step title="Further readings">
- [Protect your API](https://docs.logto.io/docs/recipes/protect-your-api/)
- [Spring Security OAuth 2.0 Resource Server](https://docs.spring.io/spring-security/reference/servlet/oauth2/resource-server/index.html)
- [Spring Security Architecture](https://spring.io/guides/topicals/spring-security-architecture)
</Step>
</Steps>

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import { type GuideMetadata } from '../types';
const metadata: Readonly<GuideMetadata> = Object.freeze({
name: 'Spring Boot',
description: 'Spring Boot is an open source Java-based framework used to create a micro Service.',
target: 'API',
});
export default metadata;

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import { lazy } from 'react';
import apiExpress from './api-express/index';
import apiSpringBoot from './api-spring-boot/index';
import m2mGeneral from './m2m-general/index';
import nativeAndroidJava from './native-android-java/index';
import nativeAndroidKt from './native-android-kt/index';
@ -173,6 +174,13 @@ const guides: Readonly<Guide[]> = Object.freeze([
Component: lazy(async () => import('./api-express/README.mdx')),
metadata: apiExpress,
},
{
order: Number.POSITIVE_INFINITY,
id: 'api-spring-boot',
Logo: lazy(async () => import('./api-spring-boot/logo.svg')),
Component: lazy(async () => import('./api-spring-boot/README.mdx')),
metadata: apiSpringBoot,
},
]);
export default guides;