SpringAI1.0的MCPServer自动暴露Tool

@Configuration
public class ToolAutoRegistrar {

    @Autowired
    private ListableBeanFactory beanFactory;

    @Bean
    public ToolCallbackProvider toolCallbackProvider() {
        List<Object> toolBeans = beanFactory.getBeansWithAnnotation(Service.class)
                .values().stream()
                .filter(bean -> Arrays.stream(bean.getClass().getMethods())
                        .anyMatch(method -> method.isAnnotationPresent(Tool.class)))
                .collect(Collectors.toList());

        return MethodToolCallbackProvider.builder()
                .toolObjects(toolBeans.toArray())
                .build();
    }
}

这段代码会自动查找所有 @Service Bean 中包含 @Tool 注解的方法，然后注册进去。

更加健壮的代码

package com.example.mcp.config;

import org.springframework.aop.framework.AopProxyUtils;
import org.springframework.beans.factory.ListableBeanFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.ai.tool.ToolCallbackProvider;
import org.springframework.ai.tool.MethodToolCallbackProvider;
import org.springframework.ai.tool.Tool;

import java.lang.reflect.Method;
import java.util.List;
import java.util.stream.Collectors;

@Configuration
public class ToolAutoRegistrar {

    @Bean
    public ToolCallbackProvider toolCallbackProvider(ListableBeanFactory beanFactory) {
        List<Object> toolBeans = beanFactory.getBeansOfType(Object.class)
                .values().stream()
                .filter(bean -> hasToolAnnotatedMethod(bean))
                .collect(Collectors.toList());

        return MethodToolCallbackProvider.builder()
                .toolObjects(toolBeans.toArray())
                .build();
    }

    private boolean hasToolAnnotatedMethod(Object bean) {
        Class<?> targetClass = AopProxyUtils.ultimateTargetClass(bean);
        for (Method method : targetClass.getDeclaredMethods()) {
            if (method.isAnnotationPresent(Tool.class)) {
                return true;
            }
        }
        return false;
    }
}