websocket发起链接时找不到方法! 求大神搭救!!!

使用springmvc+spring+websocket搭建环境.
启动Tomcat时运行正常, 使用WebSocket创建链接时报异常.
在Myeclipse 下使用Ctrl+Shift+T 查找到 ReflectionUtils 类
进入里面发现并没有 doWithLocalFields()方法!

严重: StandardWrapper.Throwable
java.lang.NoSuchMethodError: org.springframework.util.ReflectionUtils.doWithLocalFields(Ljava/lang/Class;Lorg/springframework/util/ReflectionUtils$FieldCallback;)V
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.buildPersistenceMetadata(PersistenceAnnotationBeanPostProcessor.java:418)
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findPersistenceMetadata(PersistenceAnnotationBeanPostProcessor.java:397)
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(PersistenceAnnotationBeanPostProcessor.java:333)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyMergedBeanDefinitionPostProcessors(AbstractAutowireCapableBeanFactory.java:924)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198)
at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:220)
at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:615)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:465)
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:624)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:672)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:543)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
at javax.servlet.GenericServlet.init(GenericServlet.java:160)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1235)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1148)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:830)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:137)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:107)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:75)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:934)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:90)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:494)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1009)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:632)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1592)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1550)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

https://www.zhihu.com/question/20215561

tomcat不是自带了实例么，，，直接用它的不就好了

 package com.Socket;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import javax.websocket.*;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import net.sf.json.JSONObject;

@ServerEndpoint("/websocket/{username}/{_files}/{_img}")
public class WebSocket {

    private static int onlineCount = 0;
    private static Map<String, WebSocket> clients = new ConcurrentHashMap<String, WebSocket>();
    private static List<JSONObject> list = new ArrayList<JSONObject>();
    private Session session;
    private JSONObject json;
    private String username;
    private String path;
    private JSONObject listJSON;

    @OnOpen
    public void onOpen(@PathParam("username") String username,@PathParam("_files")String _path,@PathParam("_img")String img, Session session) throws IOException {

        this.username = username;
        this.session = session;
        this.path=_path+"/"+img;

        listJSON=new JSONObject();
        listJSON.element("src", path);
        listJSON.element("username", username);
        addOnlineCount();
        list.add(listJSON);

        json = new JSONObject();
        json.element("onlineCount", getOnlineCount());
        json.element("img", path);
        json.element("onstatus", 1);
        json.element("list", list);
        json.element("username", username);
        json.element("To", "All");
        clients.put(username, this);
        sendMessageAll(json.toString());
        json.element("onstatus", 0);
    }

    @OnClose
    public void onClose() throws IOException {
        json.element("onstatus", -1);
        list.remove(listJSON);
        clients.remove(username);
        subOnlineCount();
        json.element("onlineCount", getOnlineCount());
        json.element("list", list);
        json.element("To", "All");
        sendMessageAll(json.toString());
    }

    @OnMessage
    public void onMessage(String message) throws IOException {

        JSONObject jsonTo = JSONObject.fromObject(message);
        json.element("message", jsonTo.get("message"));

        if (!jsonTo.get("To").equals("All")){
            json.element("To", "One");
            sendMessageTo(json.toString(), jsonTo.get("To").toString());
        }else{
            json.element("To", "All");
            sendMessageAll(json.toString());
        }
    }

    @OnError
    public void onError(Session session, Throwable error) {
        error.printStackTrace();
    }

    public void sendMessageTo(String message, String To) throws IOException {
        // session.getBasicRemote().sendText(message);
        //session.getAsyncRemote().sendText(message);
        for (WebSocket item : clients.values()) {
            if (item.username.equals(To) )
                item.session.getAsyncRemote().sendText(message);
        }
    }

    public void sendMessageAll(String message) throws IOException {
        for (WebSocket item : clients.values()) {
            item.session.getAsyncRemote().sendText(message);
        }
    }



    public static synchronized int getOnlineCount() {
        return onlineCount;
    }

    public static synchronized void addOnlineCount() {
        WebSocket.onlineCount++;
    }

    public static synchronized void subOnlineCount() {
        WebSocket.onlineCount--;
    }

    public static synchronized Map<String, WebSocket> getClients() {
        return clients;
    }
}

前阵子弄得，，挺乱的，，不过大概就是这么用
https://git.oschina.net/zzhao114/WebChat_websocket.git 这是我用websocket写的聊天器