Skip to content

can not run the mcp-server demo in ClientStdio #53

@huang7230468

Description

@huang7230468
  1. download the mcp-server sample code
  2. config
  3. run
  4. run result : timeout

err msg
Exception in thread "main" reactor.core.Exceptions$ReactiveException: java.util.concurrent.TimeoutException: Did not observe any item or terminal signal within 60000ms in 'source(MonoDeferContextual)' (and no fallback has been configured)
at reactor.core.Exceptions.propagate(Exceptions.java:410)
at reactor.core.publisher.BlockingSingleSubscriber.blockingGet(BlockingSingleSubscriber.java:102)
at reactor.core.publisher.Mono.block(Mono.java:1779)
at io.modelcontextprotocol.client.McpSyncClient.initialize(McpSyncClient.java:171)
at com.example.mcpserver.ClientStdio.main(ClientStdio.java:40)
Suppressed: java.lang.Exception: #block terminated with an error
at reactor.core.publisher.BlockingSingleSubscriber.blockingGet(BlockingSingleSubscriber.java:104)
... 3 more
Caused by: java.util.concurrent.TimeoutException: Did not observe any item or terminal signal within 60000ms in 'source(MonoDeferContextual)' (and no fallback has been configured)
at reactor.core.publisher.FluxTimeout$TimeoutMainSubscriber.handleTimeout(FluxTimeout.java:296)
at reactor.core.publisher.FluxTimeout$TimeoutMainSubscriber.doTimeout(FluxTimeout.java:281)
at reactor.core.publisher.FluxTimeout$TimeoutTimeoutSubscriber.onNext(FluxTimeout.java:420)
at reactor.core.publisher.FluxOnErrorReturn$ReturnSubscriber.onNext(FluxOnErrorReturn.java:162)
at reactor.core.publisher.MonoDelay$MonoDelayRunnable.propagateDelay(MonoDelay.java:270)
at reactor.core.publisher.MonoDelay$MonoDelayRunnable.run(MonoDelay.java:285)
at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:68)
at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:28)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:840)

`public class ClientStdio {
public static void main(String[] args) {

    var stdioParams = ServerParameters.builder("java")
            .args(
                    "-Dspring.ai.mcp.server.transport=STDIO",
                    "-Dspring.main.web-application-type=none",
                    "-Dspring.ai.mcp.server.type=SYNC",
                    "-Dspring.main.banner-mode=off",
                    "-Dlogging.level.root=ERROR",
                    "-Dlogging.pattern.console=%msg%n",
                    "-Dlogging.file.name=server.log",
                    "-jar",
                    "C:\\home\\workspace\\repository\\AI\\agent-demo\\mcp-server\\target\\mcpserver-0.0.1-SNAPSHOT.jar")
                    .build();

    var transport = new StdioClientTransport(stdioParams);
    var client = McpClient.sync(transport).requestTimeout(Duration.of(60, ChronoUnit.SECONDS)).build();

    client.initialize();

    // List and demonstrate tools
    McpSchema.ListToolsResult toolsList = client.listTools();
    System.out.println("Available Tools = " + toolsList);

    CallToolResult weatherForcastResult = client.callTool(new CallToolRequest("getWeatherForecastByLocation",
            Map.of("latitude", "47.6062", "longitude", "-122.3321")));
    System.out.println("Weather Forcast: " + weatherForcastResult);

    CallToolResult alertResult = client.callTool(new CallToolRequest("getAlerts", Map.of("state", "NY")));
    System.out.println("Alert Response = " + alertResult);

    client.closeGracefully();
}

}`

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions