[英]Unable to connect via websocket connection
我正在尝试在我的项目中创建一个简单的Websocket连接。
Java代码:
@ServerEndpoint("/echo")
public class EchoEndpoint {
@OnMessage
public void onMessage(Session session,String message){
try{
System.out.println(message);
}
catch(Exception e){
System.out.println(e.getMessage());
}
}
}
html和javascript代码:
<button type="button" onclick="WebSocketTest()">Send</button>
<script type="text/javascript">
function WebSocketTest()
{
alert("WebSocket is supported by your Browser!");
// Let us open a web socket
var ws = new WebSocket("ws://localhost:8080/echo");
ws.onopen = function()
{
// Web Socket is connected, send data using send()
ws.send("Message to send");
alert("Message is sent...");
};
ws.onmessage = function (evt)
{
var received_msg = evt.data;
alert("Message is received...");
};
ws.onclose = function()
{
// websocket is closed.
alert("Connection is closed...");
};
}
</script>
按下按钮后,我得到与WebSocket connection to 'ws://localhost:8080/echo' failed: Error during WebSocket handshake: Unexpected response code: 404
的错误WebSocket connection to 'ws://localhost:8080/echo' failed: Error during WebSocket handshake: Unexpected response code: 404
Jboss Wildfly8用作应用程序服务器。
任何想法? 或任何可行的例子?
这是因为您在此处输入了错误的路径:
var ws = new WebSocket(“ ws:// localhost:8080 / echo”);
如果您的应用程序打包到例如:websocketapp.war(或者如果您在websocketapp上设置了上下文路径),则应使用:
var ws = new WebSocket(“ ws:// localhost:8080 / websocketapp / echo”);
连接到网络套接字例如
var webSocket= new WebSocket("ws://l92.168.1.27:50333/project name//serverendpointdemo");
var messagesTextArea=document.getElementsByClassId("messagesTextArea");
webSocket.onopen=function(message){processOpen(message);};
webSocket.onclose=function(message){processClose(message);};
webSocket.onmessage=function(message){processMessage(message);};
webSocket.onerror=function(message){processError(message);};
function processOpen(message){
messagesTextArea.value+="Server connected...."+"\n";
}
function processMessage(message){
messagesTextArea.value+="Received from server:...."+message.data+"\n";
}
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