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我正在嘗試按照this tutorial中給出的說明進行操作,並在Netbeans中創建示例應用程序。我已經達到了測試部分。當我在Chrome中運行應用程序,它說WebSocket握手期間出錯
WebSocket連接到 'WS://本地主機:8080/WhiteboardApp/whiteboardendpoint':WebSocket的握手過程中的錯誤 :失敗意外的響應代碼:404
的index.html
<!DOCTYPE html>
<html>
<head>
<title>Start Page</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<h1>Collaborative Whiteboard App</h1>
<div id="output"></div>
<script type="text/javascript" src="websocket.js"></script>
</body>
</html>
websocket.js
var wsUri = "ws://" + document.location.host + document.location.pathname + "whiteboardendpoint";
var websocket = new WebSocket(wsUri);
websocket.onerror = function(evt) { onError(evt) };
function onError(evt) {
writeToScreen('<span style="color: red;">ERROR:</span> ' + evt.data);
}
// For testing purposes
var output = document.getElementById("output");
websocket.onopen = function(evt) { onOpen(evt) };
function writeToScreen(message) {
output.innerHTML += message + "<br>";
}
function onOpen(evt) {
writeToScreen("Connected to " + wsUri);
}
// End test functions
MyWhiteboard.java
package org.myapps.whiteboardapp;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import javax.websocket.*;
import javax.websocket.server.ServerEndpoint;
@ServerEndpoint("/whiteboardendpoint ")
public class MyWhiteboard {
private static Set<Session> peers = Collections.synchronizedSet(new HashSet<Session>());
@OnMessage
public String onMessage(String message) {
return null;
}
@OnOpen
public void onOpen (Session peer) {
peers.add(peer);
}
@OnClose
public void onClose (Session peer) {
peers.remove(peer);
}
}
我在哪裏出了錯?我怎麼解決這個問題 ?
我從教程中唯一的變化是,在創建項目時,我使用包作爲'org.myapps.whiteboardapp'而不是'org.sample.whiteboardapp'。但是,這不是問題的原因,我認爲 – 2014-09-28 14:23:09
你設法解決這個問題? – Mj1992 2016-07-11 12:50:12