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Spring AI 实现 STDIO和SSE MCP Server的过程详解

2025年05月20日 • Java •我要评论
spring ai 实现 stdio和sse mcp serverjava mcp 三层架构中,传输的方式有stdio和sse两种,如下图所示。stdio方式是基于进程间通信,mcp client和m

spring ai 实现 stdio和sse mcp server

java mcp 三层架构中,传输的方式有stdio和sse两种,如下图所示。

stdio方式是基于进程间通信,mcp client和mcp server运行在同一主机,主要用于本地集成、命令行工具等场景。

sse方式是基于http协议,mcp client远程调用mcp server提供的sse服务。实现客户端和服务端远程通信。

sse server

spring-ai-starter-mcp-server-webflux 基于webflux sse 实现sse server。

<dependency>
<groupid>org.springframework.ai</groupid>
<artifactid>spring-ai-starter-mcp-server-webflux</artifactid>
</dependency>

mcp 服务端功能支持基于 spring webflux 的 sse(服务器发送事件)服务器传输和可选的 stdio 传输。

1.新建spring boot项目

使用https://start.spring.io/新建项目,引入以下依赖。

<?xml version="1.0" encoding="utf-8"?>
<project xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"
	xsi:schemalocation="http://maven.apache.org/pom/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelversion>4.0.0</modelversion>
	<parent>
		<groupid>org.springframework.boot</groupid>
		<artifactid>spring-boot-starter-parent</artifactid>
		<version>3.4.4</version>
		<relativepath/> <!-- lookup parent from repository -->
	</parent>
	<groupid>com.mcp.example</groupid>
	<artifactid>mcp-webflux-server-example</artifactid>
	<version>0.0.1-snapshot</version>
	<name>mcp-webflux-server-example</name>
	<description>mcp-webflux-server-example</description>
	<dependencymanagement>
		<dependencies>
			<dependency>
				<groupid>org.springframework.ai</groupid>
				<artifactid>spring-ai-bom</artifactid>
				<version>1.0.0-snapshot</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencymanagement>
	<dependencies>
		<dependency>
			<groupid>org.springframework.ai</groupid>
			<artifactid>spring-ai-starter-mcp-server-webflux</artifactid>
		</dependency>
		<dependency>
			<groupid>org.springframework.boot</groupid>
			<artifactid>spring-boot-starter-test</artifactid>
		</dependency>
	</dependencies>
	<build>
		<plugins>
			<plugin>
				<groupid>org.springframework.boot</groupid>
				<artifactid>spring-boot-maven-plugin</artifactid>
			</plugin>
		</plugins>
	</build>
	<repositories>
		<repository>
			<name>central portal snapshots</name>
			<id>central-portal-snapshots</id>
			<url>https://central.sonatype.com/repository/maven-snapshots/</url>
			<releases>
				<enabled>false</enabled>
			</releases>
			<snapshots>
				<enabled>true</enabled>
			</snapshots>
		</repository>
		<repository>
			<id>spring-milestones</id>
			<name>spring milestones</name>
			<url>https://repo.spring.io/milestone</url>
			<snapshots>
				<enabled>false</enabled>
			</snapshots>
		</repository>
		<repository>
			<id>spring-snapshots</id>
			<name>spring snapshots</name>
			<url>https://repo.spring.io/snapshot</url>
			<releases>
				<enabled>false</enabled>
			</releases>
		</repository>
	</repositories>
</project>

2.application.yaml配置

spring:
  ai:
    mcp:
      server:
        name: webflux-mcp-server
        version: 1.0.0
        type: async  # recommended for reactive applications
        sse-message-endpoint: /mcp/messages

定义mcp名称和版本号以及同步或异步配置。

3.定义工具类

@service
public class datetimeservice {
    @tool(description = "get the current date and time in the user's timezone")
    string getcurrentdatetime() {
        return localdatetime.now().atzone(localecontextholder.gettimezone().tozoneid()).tostring();
    }
    @tool(description = "set a user alarm for the given time, provided in iso-8601 format")
     string setalarm(string time) {
        localdatetime alarmtime = localdatetime.parse(time, datetimeformatter.iso_date_time);
        return "alarm set for " + alarmtime;
    }
}

定义二个工具:

1.获取当前日期和时间

2.设置提醒功能

4.暴露工具

@configuration
public class mcpwebfluxserviceexampleconfig {
    @bean
    public toolcallbackprovider datetimetools(datetimeservice datetimeservice) {
        return methodtoolcallbackprovider.builder().toolobjects(datetimeservice).build();
    }
}

5.启动mcp server项目

启动项目发现注册的两个工具成功,可以端可以发现两个工具。到此mcp server服务完成,sse的端点路径:http://localhost:9090,接下来是客户端连接使用服务端提供的工具。

6.mcp client连接mcp server

1.新建spring boot项目,然后引入starter

     <dependency>
            <groupid>org.springframework.ai</groupid>
            <artifactid>spring-ai-starter-mcp-client</artifactid>
        </dependency>

完整pom.xml

<?xml version="1.0" encoding="utf-8"?>
<project xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"
         xsi:schemalocation="http://maven.apache.org/pom/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelversion>4.0.0</modelversion>
    <parent>
        <groupid>org.springframework.boot</groupid>
        <artifactid>spring-boot-starter-parent</artifactid>
        <version>3.4.4</version>
        <relativepath/> <!-- lookup parent from repository -->
    </parent>
    <groupid>com.mcp.example</groupid>
    <artifactid>mcp-client-example</artifactid>
    <version>0.0.1-snapshot</version>
    <name>mcp-client-example</name>
    <description>mcp-client-example</description>
    <dependencymanagement>
        <dependencies>
            <dependency>
                <groupid>org.springframework.ai</groupid>
                <artifactid>spring-ai-bom</artifactid>
                <version>1.0.0-snapshot</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencymanagement>
    <dependencies>
        <dependency>
            <groupid>org.springframework.ai</groupid>
            <artifactid>spring-ai-openai-spring-boot-starter</artifactid>
            <version>1.0.0-snapshot</version>
        </dependency>
        <dependency>
            <groupid>org.springframework.boot</groupid>
            <artifactid>spring-boot-starter-web</artifactid>
        </dependency>
        <dependency>
            <groupid>org.springframework.ai</groupid>
            <artifactid>spring-ai-starter-mcp-client</artifactid>
        </dependency>
        <dependency>
            <groupid>org.springframework.boot</groupid>
            <artifactid>spring-boot-starter-test</artifactid>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupid>org.springframework.boot</groupid>
                <artifactid>spring-boot-maven-plugin</artifactid>
            </plugin>
        </plugins>
    </build>
    <repositories>
        <repository>
            <name>central portal snapshots</name>
            <id>central-portal-snapshots</id>
            <url>https://central.sonatype.com/repository/maven-snapshots/</url>
            <releases>
                <enabled>false</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <name>spring milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-snapshots</id>
            <name>spring snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <releases>
                <enabled>false</enabled>
            </releases>
        </repository>
    </repositories>
</project>

2.配置

spring:
  ai:
    openai:
      api-key: 你自己密钥
      base-url: https://api.siliconflow.cn
      chat:
        options:
          model: qwen/qwen2.5-72b-instruct
    mcp:
      client:
        sse:
          connections:
            server1:
              url: http://localhost:9090
        toolcallback:
          enabled: true
server:
  port: 9091

配置文件内容,大模型配置方便测试工具使用,mcp服务端设置就是mcp server提供的sse端点。

toolcalback.enable=true 自动注入spring ai toolcallbackprovider。

3.测试

package com.mcp.example.mcpclientexample;
import io.modelcontextprotocol.client.mcpasyncclient;
import jakarta.annotation.resource;
import org.springframework.ai.chat.client.chatclient;
import org.springframework.ai.mcp.syncmcptoolcallbackprovider;
import org.springframework.ai.tool.toolcallback;
import org.springframework.ai.tool.toolcallbackprovider;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.boot.commandlinerunner;
import org.springframework.boot.springapplication;
import org.springframework.boot.autoconfigure.springbootapplication;
import java.util.arrays;
import java.util.list;
@springbootapplication
public class mcpclientexampleapplication implements commandlinerunner {
    @resource
    private toolcallbackprovider tools;
    @resource
    chatclient.builder chatclientbuilder;
    public static void main(string[] args) {
        springapplication.run(mcpclientexampleapplication.class, args);
    }
    @override
    public void run(string... args) throws exception {
        var chatclient = chatclientbuilder
                .defaulttools(tools)
                .build();
        string content = chatclient.prompt("10分钟后,设置一个闹铃。").call().content();
        system.out.println(content);
        string content1 = chatclient.prompt("明天星期几?").call().content();
        system.out.println(content1);
    }
}

运行客户端项目:

结果表明定义的工具大模型根据用户的提问,选择了合适的工具进行回答。

stdio server

标准 mcp 服务器,通过 stdio 服务器传输支持完整的 mcp 服务器功能。

<dependency>
    <groupid>org.springframework.ai</groupid>
    <artifactid>spring-ai-starter-mcp-server</artifactid>
</dependency>

1.创建server项目

新建spring boot项目引入以下依赖

<?xml version="1.0" encoding="utf-8"?>
<project xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"
	xsi:schemalocation="http://maven.apache.org/pom/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelversion>4.0.0</modelversion>
	<parent>
		<groupid>org.springframework.boot</groupid>
		<artifactid>spring-boot-starter-parent</artifactid>
		<version>3.4.4</version>
		<relativepath/> <!-- lookup parent from repository -->
	</parent>
	<groupid>com.mcp.example</groupid>
	<artifactid>mcp-stdio-server-example</artifactid>
	<version>0.0.1-snapshot</version>
	<name>mcp-stdio-server-example</name>
	<description>mcp-stdio-server-example</description>
	<dependencymanagement>
		<dependencies>
			<dependency>
				<groupid>org.springframework.ai</groupid>
				<artifactid>spring-ai-bom</artifactid>
				<version>1.0.0-snapshot</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencymanagement>
	<dependencies>
		<dependency>
			<groupid>org.springframework.ai</groupid>
			<artifactid>spring-ai-starter-mcp-server</artifactid>
		</dependency>
	</dependencies>
	<build>
		<plugins>
			<plugin>
				<groupid>org.springframework.boot</groupid>
				<artifactid>spring-boot-maven-plugin</artifactid>
			</plugin>
		</plugins>
	</build>
	<repositories>
		<repository>
			<name>central portal snapshots</name>
			<id>central-portal-snapshots</id>
			<url>https://central.sonatype.com/repository/maven-snapshots/</url>
			<releases>
				<enabled>false</enabled>
			</releases>
			<snapshots>
				<enabled>true</enabled>
			</snapshots>
		</repository>
		<repository>
			<id>spring-milestones</id>
			<name>spring milestones</name>
			<url>https://repo.spring.io/milestone</url>
			<snapshots>
				<enabled>false</enabled>
			</snapshots>
		</repository>
		<repository>
			<id>spring-snapshots</id>
			<name>spring snapshots</name>
			<url>https://repo.spring.io/snapshot</url>
			<releases>
				<enabled>false</enabled>
			</releases>
		</repository>
	</repositories>
</project>

配置文件application.yaml

spring:
  ai:
    mcp:
      server:
        name: stdio-mcp-server
        version: 1.0.0
        stdio: true
  main:
    banner-mode: off
    web-application-type: none
logging:
  pattern:
    console:
server:
  port: 9090

main:
banner-mode: off
web-application-type: none 这个配置非常关键,否则client与server通信会提示json解析有问题。这个必须关掉。

2.新建工具

与sse server一样,新建datetimetool并注册。

3.打包项目

stdio方式server和client之间是进程间通信,所以需要把server打包成jar,以便client命令启动执行,或者三方客户端命令启动执行。将server jar放到一个指定目录,如下所示:

target/mcp-stdio-server-example.jar

4.创建client项目

直接使用上面sse server使用的 clinet,修改对应配置文件application.yaml和新建mcp-server配置json。
mcp-servers-config.json。

{
  "mcpservers": {
    "stdio-mcp-server": {
      "command": "java",
      "args": [
        "-dspring.ai.mcp.server.stdio=true",
        "-dspring.main.web-application-type=none",
        "-jar",
        "mcp server正确的路径 ../mcp-stdio-server-example-0.0.1-snapshot.jar"
      ],
      "env": {}
    }
  }
}

application.yaml

spring:
  ai:
    openai:
      api-key: sk-qwkegvacbfpsctyhfgakxlwfnklinwjunjyfmonnxddmcixr
      base-url: https://api.siliconflow.cn
      chat:
        options:
          model: qwen/qwen2.5-72b-instruct
    mcp:
      client:
#        sse:
#          connections:
#            server1:
#              url: http://localhost:9090
         stdio:
           root-change-notification: false
           servers-configuration: classpath:/mcp-servers-config.json
         toolcallback:
          enabled: true
server:
  port: 9091

5.启动客户端

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