Question

尝试使用Java Servlets和tomcat 8.5通过WebSockets更新html / jsp文件中的某些信息以连接到RMI服务器。错误是：

VM281:164 WebSocket connection to 'ws://localhost:8080/sd/ws' failed: Error during WebSocket handshake: Unexpected response code: 200

这是我们的Javascript连接代码：

var websocket;
var elId = null;
window.onload = function() {
    connect("ws://"+document.location.host+"/sd/ws")
}
function connect(host) { // connect to the host websocket
if ('WebSocket' in window)
    websocket = new WebSocket(host);
else if ('MozWebSocket' in window)
    websocket = new MozWebSocket(host);
return;
websocket.onopen    = onOpen; // set the event listeners below
websocket.onclose   = onClose;
websocket.onmessage = onMessage;
websocket.onerror   = onError;
}

我们的Java Servlet代码是这样的：

package ws;

import java.io.IOException;
import java.rmi.RemoteException;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;

import javax.websocket.server.ServerEndpoint;

import rmi.Election;
import rmi.ServerInterface;

import javax.websocket.OnOpen;
import javax.websocket.OnClose;
import javax.websocket.OnMessage;
import javax.websocket.OnError;
import javax.websocket.Session;

@ServerEndpoint(value = "/ws")
public class ElectionInfoWebSocket {
    private Session session;
    private boolean isUp;
    private ServerInterface rmiCon;
    private String naming =  "//127.0.0.1:7000/server";
    private String elId = "";

    public ElectionInfoWebSocket() {

    }

    @OnOpen
    public void start(Session session) {
        this.session = session;
        isUp = true;
        sendMessage("meme");
    }
}

我已将java.websocket jar导入到lib文件中，但它仍无法正常工作。在这里尝试了所有的解决方案没有任何作用，并且URI似乎是正确的，因为我们已经测试了所有可能性。

Javascript和Java Servlet：WebSocket握手期间出错：意外的响应代码：200

0 个答案: