sendAsync()
this
transport
notificationHandlers
sseEndpoint
connect()
listTools()
sendRequest()
this.baseUrl + this.messageEndpoint + \"?sessionId=\" + sessionId
HttpClientSseClientTransport
requestHandlers初始化请求处理器（Ping处理器、Tools处理器、Resources处理器、Prompts处理器、Logging处理器、Completions处理器
POST messageEndpoint
setMessageEndpoint
sampling
url = this.baseUri + this.sseEndpoint
HttpServletSseServerTransportProvider
mcpAsyncClient
McpSchema.InitializeRequest
subscribe()
notificationHandlers初始化通知处理器（notifications/initialized、notifications/roots/list_changed）
doGet() 建立SSE连接
MCP Client
McpClientSession
method:initialize
获取MCP 工具列表响应
doPost() method: notifications/initialized
experimental
Cache-Control: no-cache
baseUri
Accept: text/event-stream
method: notifications/initialized
setLoggingLevel()
McpSyncClient
MCP客户端代码示例
mcpSyncClient
method: logging/setLevel
HttpRequest
@WebServlet(asyncSupported = true)public class McpClientServlet extends HttpServlet { private McpSyncClient mcpSyncClient; private final ObjectMapper objectMapper = new ObjectMapper(); @Override public void init(ServletConfig config) throws ServletException { super.init(config); HttpClientSseClientTransport httpClientSseClientTransport = HttpClientSseClientTransport.builder(\"http://localhost:8080\") .sseEndpoint(\"/mcp/mcp/sse\") .objectMapper(objectMapper) .build(); McpSchema.ClientCapabilities capabilities = McpSchema.ClientCapabilities.builder() .roots(true) // Enable filesystem roots support with list changes notifications .sampling() // Enable LLM sampling support .build(); // Create a sync client with custom configuration mcpSyncClient = McpClient.sync(httpClientSseClientTransport) .clientInfo(new McpSchema.Implementation(\"my-client\
客户端启动完成
Mcp Http Client源码分析
requestHandlers
sendNotification()
sendMessage()
roots
HttpClient
doPost() method:initialize
requestTimeout
requestId
FlowSseClient
获取MCP 工具列表
doPost() method: logging/setLevel
initialize()
doPost() method: tools/list
启动客户端
MCP Http Server
McpAsyncClient
httpClient
ClientCapabilities
initializeRequest
