MCP没你想的复杂！Java开发 MCP 服务端实战

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

@Service
public class MeilisearchService {
    
    /**
     * 智能文档检索（支持语义匹配）
     * @param question 用户自然语言提问
     * @return 结构化知识内容
     */
    @Tool(description = "PIG ISSUE 知识库检索，解决用户技术问题")
    public String queryQuestion(@ToolParam(description = "用户的技术问题描述") String question) {
        Client client = new Client(new Config("https://search.pig4cloud.com", "Aii1ERRT9-e1HHUsyTgzrljQFmHgnsC1iCa9_css5e4"));
        
        SearchResult results = client.index("pigx-doc")
            .search(new SearchRequest(question)
                .setShowMatchesPosition(true)
                .setSort(new String[]{"lvl2:desc"})
                .setLimit(1));

        return results.getHits().stream()
            .map(hit -> "【"+hit.get("lvl0")+"】"+hit.get("text"))
            .collect(Collectors.joining("\n\n"));
    }
}

@Configuration
public class McpConfig {

    @Bean
    public ToolCallbackProvider documentTools(MeilisearchService searchService) {
        return MethodToolCallbackProvider.builder()
               .toolObjects(searchService)
               .build();
    }
}

{
  "mcpServers": {
    "pig-issue": {
      "isActive": true,
      "command": "java",
      "args": [
        "-Dspring.ai.mcp.server.stdio=true",
        "-jar",
        "/Users/lengleng/env/repository/io/github/pig-mesh/pig-issue-query-mcp/0.0.1-SNAPSHOT/pig-issue-query-mcp-0.0.1-SNAPSHOT.jar"
      ]
    }
  }
}