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=== Java控制檯日誌===的Jboss EAP 6.4 - WebSocket的500內部服務器錯誤
JBWEB000236: Servlet.service() for servlet default threw exception: java.lang.IllegalStateException: JBWEB000034: Cannot upgrade from HTTP/1.1 without IO events
=== HTML代碼===
<body>
<div>
<div id="connect-container">
<div>
<fieldset>
<legend>Connect or disconnect using WebSocket :</legend>
<input type="button" id="connect" onclick="connect();"
value="Open Connection" /> <input type="button" id="disconnect"
onclick="disconnect();" value="Close Connection" />
</fieldset>
</div>
<div>
<fieldset>
<legend>Type your name below. then click the `Say Hello`
button :</legend>
<input id="name" type="text" size="40" style="width: 40%" /> <input
type="button" id="sayHello" onclick="sendMessage();"
value="Say Hello" disabled="disabled" />
</fieldset>
</div>
<div>
Current WebSocket Connection Status:
<output id="currentstatus" class="message">Closed</output>
</div>
<div>
<output id="hellomessage" />
</div>
</div>
</div>
</body>
=== JavaScript代碼===
var websocket = null;
function connect() {
var wsURI = "ws://localhost:8380/websockets-server/helloName";
websocket = new WebSocket(wsURI);
websocket.onopen = function() {
displayStatus('Open');
document.getElementById('sayHello').disabled = false;
displayMessage('Connection is now open. Type a name and click Say Hello to send a message.');
};
websocket.onmessage = function(event) {
// log the event
displayMessage('The response was received! ' + event.data,
'success');
};
websocket.onerror = function(event) {
// log the event
displayMessage('Error! ' + event.data, 'error');
};
websocket.onclose = function() {
displayStatus('Closed');
displayMessage('The connection was closed or timed out. Please click the Open Connection button to reconnect.');
document.getElementById('sayHello').disabled = true;
};
}
function disconnect() {
if (websocket !== null) {
websocket.close();
websocket = null;
}
message.setAttribute("class", "message");
message.value = 'WebSocket closed.';
// log the event
}
function sendMessage() {
if (websocket !== null) {
var content = document.getElementById('name').value;
websocket.send(content);
} else {
displayMessage(
'WebSocket connection is not established. Please click the Open Connection button.',
'error');
}
}
function displayMessage(data, style) {
var message = document.getElementById('hellomessage');
message.setAttribute("class", style);
message.value = data;
}
function displayStatus(status) {
var currentStatus = document.getElementById('currentstatus');
currentStatus.value = status;
}
=== Java的類代碼===
package org.jboss.as.quickstarts.websocket_hello;
import javax.websocket.CloseReason;
import javax.websocket.OnClose;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;
@ServerEndpoint("/helloName")
public class HelloName {
@OnMessage
public String sayHello(String name) {
System.out.println("Say hello to '" + name + "'");
return ("Hello" + name);
}
@OnOpen
public void helloOnOpen(Session session) {
System.out.println("WebSocket opened: " + session.getId());
}
@OnClose
public void helloOnClose(CloseReason reason) {
System.out.println("Closing a WebSocket due to " + reason.getReasonPhrase());
}
}
庫和XML文件
WEB-INF/lib/jboss-websocket-api_1.0_spec-1.0.0.Final.jar
WEB-INF/jboss-web.xml
的jboss-web.xml中
<?xml version="1.0" encoding="UTF-8"?>
<jboss-web>
<enable-websockets>true</enable-websockets>
</jboss-web>
瀏覽器：網絡> WS>頁眉
===一般===
Request URL:ws://localhost:8380/websockets-server/helloName
Request Method:GET
Status Code:500 Internal Server Error
===請求頭===
Accept-Encoding:gzip, deflate, sdch, br
Accept-Language:th-TH,th;q=0.8,en;q=0.6
Cache-Control:no-cache
Connection:Upgrade
Cookie:JSESSIONID=b+Xfkitt-KYWiRl99vmbubUN
Host:localhost:8380
Origin:http://localhost:8380
Pragma:no-cache
Sec-WebSocket-Extensions:permessage-deflate; client_max_window_bits
Sec-WebSocket-Key:NH/fCYRMJge2+3WGz9gcLg==
Sec-WebSocket-Version:13
Upgrade:websocket
User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36
===響應頭===
Connection:close
Content-Length:1885
Content-Type:text/html;charset=utf-8
Date:Mon, 30 Jan 2017 08:54:00 GMT
Server:Apache-Coyote/1.1
===標籤框架===
(Opcode -1)