Java MCP Example

Boot

java -jar /Volumes/source/ai/autodev-mcp-test/java-mcp/target/mcp-0.0.1-SNAPSHOT.jar

初始化 GRPC JSON：

{"id":1,"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{"experimental":{},"sampling":{}},"clientInfo":{"name":"weather","version":"1.0.0"},"jsonrpc":"2.0"}}

工具列表：

{"id":2,"method":"tools/list","params":{"protocolVersion":"2024-11-05","capabilities":{"experimental":{},"sampling":{}},"clientInfo":{"name":"weather","version":"1.0.0"}},"jsonrpc":"2.0"}

1. Setup Dependencies

<dependencies>
	<dependency>
		<groupId>org.springframework.ai</groupId>
		<artifactId>spring-ai-mcp-server-spring-boot-starter</artifactId>
	</dependency>

	<dependency>
		<groupId>io.modelcontextprotocol.sdk</groupId>
		<artifactId>mcp</artifactId>
		<version>0.8.1</version>
	</dependency>

	<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-test</artifactId>
		<scope>test</scope>
	</dependency>
</dependencies>

2. Create ToolCallbackProvider

@SpringBootApplication
public class McpApplication {

	public static void main(String[] args) {
		SpringApplication.run(McpApplication.class, args);
	}

	@Bean
	public ToolCallbackProvider weatherTools(WeatherService weatherService) {
		return MethodToolCallbackProvider.builder().toolObjects(weatherService).build();
	}
}

3. Create tool

@Service
public class WeatherService {
    @Tool(description = "Get weather forecast for a specific latitude/longitude")
    public String getWeatherForecastByLocation(double latitude, double longitude) {
        return String.format("Weather forecast for location (%f, %f): Sunny, 25°C", latitude, longitude);
    }
}