openui-forge-java

Name: openui-forge-java
Author: OthmanAdi

1installs0forks

How to install openui-forge-java?

othmanadi/openui-forge/openui-forge-java

$npx -y skills add OthmanAdi/openui-forge --skill openui-forge-java

Installs into the current project.

Summary

OpenUI generative UI with a Java Spring Boot (WebFlux) backend. Streams the OpenAI API directly via WebClient as SSE.

Files · 1

View on GitHub

SKILL.md

1	# OpenUI Forge — Java
2
3	Build generative UI apps with a React frontend + Java Spring Boot (WebFlux) backend. The backend forwards OpenAI's SSE stream to the browser via a reactive `WebClient` and a `Flux<String>` controller, pairing with `openAIAdapter()` on the frontend.
4
5	## Activation Triggers
6
7	- "openui java", "openui spring", "openui spring boot backend"
8	- "generative ui java", "java streaming ui backend", "webflux openui"
9
10	## Prerequisites
11
12	- Node.js >= 22 (24 LTS recommended) + React >= 18.3.1 (19+ recommended) (frontend)
13	- Java 21 LTS recommended (Spring Boot 4.x requires Java 17+; it builds against Java up to 26)
14	- Maven 3.9+ (or Gradle 8+)
15	- Spring Boot 4.0.x (current stable line; 4.1.x is the latest). Boot 3.5.x also works but reached end of OSS support on 2026-06-30.
16	- `OPENAI_API_KEY` environment variable set
17
18	## Quick Start
19
20	1. Create the React frontend and install OpenUI deps:
21	```bash
22	npm install @openuidev/react-ui @openuidev/react-headless @openuidev/react-lang lucide-react zod
23	```
24	2. Generate the system prompt into the backend's resources:
25	```bash
26	npx @openuidev/cli generate ./src/lib/library.ts --out backend/src/main/resources/system-prompt.txt
27	```
28	3. Create the Spring Boot backend (see Full Code below)
29	4. Run: `mvn spring-boot:run` on `:8080`, frontend on `:3000`
30
31	## Full Code
32
33	### Backend: `backend/pom.xml`
34
35	```xml
36	<?xml version="1.0" encoding="UTF-8"?>
37	<project xmlns="http://maven.apache.org/POM/4.0.0"
38	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
39	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
40	<modelVersion>4.0.0</modelVersion>
41
42	<parent>
43	<groupId>org.springframework.boot</groupId>
44	<artifactId>spring-boot-starter-parent</artifactId>
45	<version>4.0.6</version>
46	<relativePath/>
47	</parent>
48
49	<groupId>com.example</groupId>
50	<artifactId>openui-backend</artifactId>
51	<version>0.0.1-SNAPSHOT</version>
52
53	<properties>
54	<java.version>21</java.version>
55	</properties>
56
57	<dependencies>
58	<!-- WebFlux pulls in the reactive web stack, WebClient, and Reactor Netty -->
59	<dependency>
60	<groupId>org.springframework.boot</groupId>
61	<artifactId>spring-boot-starter-webflux</artifactId>
62	</dependency>
63	</dependencies>
64
65	<build>
66	<plugins>
67	<plugin>
68	<groupId>org.springframework.boot</groupId>
69	<artifactId>spring-boot-maven-plugin</artifactId>
70	</plugin>
71	</plugins>
72	</build>
73	</project>
74	```
75
76	### Backend: `backend/src/main/resources/application.properties`
77
78	```properties
79	# Server port (override with SERVER_PORT env var). Frontend expects 8080.
80	server.port=${SERVER_PORT:8080}
81	```
82
83	### Backend: `backend/src/main/java/com/example/openui/Application.java`
84
85	```java
86	package com.example.openui;
87
88	import java.io.IOException;
89	import java.io.UncheckedIOException;
90	import java.nio.charset.StandardCharsets;
91	import java.util.ArrayList;
92	import java.util.List;
93	import java.util.Map;
94
95	import org.springframework.beans.factory.annotation.Value;
96	import org.springframework.boot.SpringApplication;
97	import org.springframework.boot.autoconfigure.SpringBootApplication;
98	import org.springframework.context.annotation.Bean;
99	import org.springframework.core.io.Resource;
100	import org.springframework.http.HttpHeaders;
101	import org.springframework.http.MediaType;
102	import org.springframework.web.bind.annotation.PostMapping;
103	import org.springframework.web.bind.annotation.RequestBody;
104	import org.springframework.web.bind.annotation.RestController;
105	import org.springframework.web.reactive.config.CorsRegistry;
106	import org.springframework.web.reactive.config.WebFluxConfigurer;
107	import org.springframework.web.reactive.function.client.WebClient;
108
109	import reactor.core.publisher.Flux;
110
111	@SpringBootApplication
112	public class Application {
113
114	public static void main(String[] args) {
115	SpringApplication.run(Application.class, args);
116	}
117
118	// CORS — lock to the configured frontend origin. Never use "*" here: the
119	// endpoint is browser-callable and a wildcard lets any site burn your key.
120	@Bean
121	public WebFluxConfigurer corsConfigurer(
122	@Value("${FRONTEND_ORIGIN:http://localhost:3000}") String frontendOrigin) {
123	return new WebFluxConfigurer() {
124	@Override
125	public void addCorsMappings(CorsRegistry registry) {
126	registry.addMapping("/api/**")
127	.allowedOrigins(frontendOrigin)
128	.allowedMethods("POST", "OPTIONS")
129	.allowedHeaders("Content-Type")
130	.allowCredentials(true);
131	}
132	};
133	}
134
135	// Shared non-blocking WebClient (Reactor Netty). Honors OPENA

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openui-forge-java

1installs0forks

View on GitHub

How to install openui-forge-java?

othmanadi/openui-forge/openui-forge-java

$npx -y skills add OthmanAdi/openui-forge --skill openui-forge-java

Installs into the current project.

Summary

OpenUI generative UI with a Java Spring Boot (WebFlux) backend. Streams the OpenAI API directly via WebClient as SSE.

Files · 1

View on GitHub

SKILL.md

1	# OpenUI Forge — Java
2
3	Build generative UI apps with a React frontend + Java Spring Boot (WebFlux) backend. The backend forwards OpenAI's SSE stream to the browser via a reactive `WebClient` and a `Flux<String>` controller, pairing with `openAIAdapter()` on the frontend.
4
5	## Activation Triggers
6
7	- "openui java", "openui spring", "openui spring boot backend"
8	- "generative ui java", "java streaming ui backend", "webflux openui"
9
10	## Prerequisites
11
12	- Node.js >= 22 (24 LTS recommended) + React >= 18.3.1 (19+ recommended) (frontend)
13	- Java 21 LTS recommended (Spring Boot 4.x requires Java 17+; it builds against Java up to 26)
14	- Maven 3.9+ (or Gradle 8+)
15	- Spring Boot 4.0.x (current stable line; 4.1.x is the latest). Boot 3.5.x also works but reached end of OSS support on 2026-06-30.
16	- `OPENAI_API_KEY` environment variable set
17
18	## Quick Start
19
20	1. Create the React frontend and install OpenUI deps:
21	```bash
22	npm install @openuidev/react-ui @openuidev/react-headless @openuidev/react-lang lucide-react zod
23	```
24	2. Generate the system prompt into the backend's resources:
25	```bash
26	npx @openuidev/cli generate ./src/lib/library.ts --out backend/src/main/resources/system-prompt.txt
27	```
28	3. Create the Spring Boot backend (see Full Code below)
29	4. Run: `mvn spring-boot:run` on `:8080`, frontend on `:3000`
30
31	## Full Code
32
33	### Backend: `backend/pom.xml`
34
35	```xml
36	<?xml version="1.0" encoding="UTF-8"?>
37	<project xmlns="http://maven.apache.org/POM/4.0.0"
38	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
39	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
40	<modelVersion>4.0.0</modelVersion>
41
42	<parent>
43	<groupId>org.springframework.boot</groupId>
44	<artifactId>spring-boot-starter-parent</artifactId>
45	<version>4.0.6</version>
46	<relativePath/>
47	</parent>
48
49	<groupId>com.example</groupId>
50	<artifactId>openui-backend</artifactId>
51	<version>0.0.1-SNAPSHOT</version>
52
53	<properties>
54	<java.version>21</java.version>
55	</properties>
56
57	<dependencies>
58	<!-- WebFlux pulls in the reactive web stack, WebClient, and Reactor Netty -->
59	<dependency>
60	<groupId>org.springframework.boot</groupId>
61	<artifactId>spring-boot-starter-webflux</artifactId>
62	</dependency>
63	</dependencies>
64
65	<build>
66	<plugins>
67	<plugin>
68	<groupId>org.springframework.boot</groupId>
69	<artifactId>spring-boot-maven-plugin</artifactId>
70	</plugin>
71	</plugins>
72	</build>
73	</project>
74	```
75
76	### Backend: `backend/src/main/resources/application.properties`
77
78	```properties
79	# Server port (override with SERVER_PORT env var). Frontend expects 8080.
80	server.port=${SERVER_PORT:8080}
81	```
82
83	### Backend: `backend/src/main/java/com/example/openui/Application.java`
84
85	```java
86	package com.example.openui;
87
88	import java.io.IOException;
89	import java.io.UncheckedIOException;
90	import java.nio.charset.StandardCharsets;
91	import java.util.ArrayList;
92	import java.util.List;
93	import java.util.Map;
94
95	import org.springframework.beans.factory.annotation.Value;
96	import org.springframework.boot.SpringApplication;
97	import org.springframework.boot.autoconfigure.SpringBootApplication;
98	import org.springframework.context.annotation.Bean;
99	import org.springframework.core.io.Resource;
100	import org.springframework.http.HttpHeaders;
101	import org.springframework.http.MediaType;
102	import org.springframework.web.bind.annotation.PostMapping;
103	import org.springframework.web.bind.annotation.RequestBody;
104	import org.springframework.web.bind.annotation.RestController;
105	import org.springframework.web.reactive.config.CorsRegistry;
106	import org.springframework.web.reactive.config.WebFluxConfigurer;
107	import org.springframework.web.reactive.function.client.WebClient;
108
109	import reactor.core.publisher.Flux;
110
111	@SpringBootApplication
112	public class Application {
113
114	public static void main(String[] args) {
115	SpringApplication.run(Application.class, args);
116	}
117
118	// CORS — lock to the configured frontend origin. Never use "*" here: the
119	// endpoint is browser-callable and a wildcard lets any site burn your key.
120	@Bean
121	public WebFluxConfigurer corsConfigurer(
122	@Value("${FRONTEND_ORIGIN:http://localhost:3000}") String frontendOrigin) {
123	return new WebFluxConfigurer() {
124	@Override
125	public void addCorsMappings(CorsRegistry registry) {
126	registry.addMapping("/api/**")
127	.allowedOrigins(frontendOrigin)
128	.allowedMethods("POST", "OPTIONS")
129	.allowedHeaders("Content-Type")
130	.allowCredentials(true);
131	}
132	};
133	}
134
135	// Shared non-blocking WebClient (Reactor Netty). Honors OPENA

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6 picks

Type