Tomcat7 搭建 websocket服务
pom.xml (虽然配置了maven tomcat7插件,但是直接从maven中启动web服务，websocket服务启动不了。要将web服务部署到tomcat7 server上。可以直接打包war，也可以在开发工具中引入tomcat7)4.0.0
web
web
war
1.0-SNAPSHOT
web Maven Webapp
http://maven.apache.org
javax.websocket
javax.websocket-api
1.1
provided
web
org.apache.tomcat.maven
tomcat7-maven-plugin
2.1
8077
/web
UTF-8
web
tomcat7
websocket.server.SimpleServer
package websocket.server;
import javax.websocket.*;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.logging.Logger;
/**
* Created by Administrator on 2016/4/17.
*/
@ServerEndpoint("/SimpleWebSocket")
public class SimpleServer {
private Logger logger = Logger.getLogger(this.getClass().getName());
@OnOpen
public void onOpen(Session session){
logger.info("websocket open ... ");
System.out.println(session);
}
/**
* 连接关闭调用的方法
*/
@OnClose
public void onClose(){
logger.info("websocket close .... ");
}
@OnError
public void onError(Throwable e){
logger.severe("error～～～～"+e.getMessage());
}
/**
* 收到客户端消息后调用的方法
* @param message 客户端发送过来的消息
* @param session 可选的参数
*/
@OnMessage
public void onMessage(String message, Session session) throws IOException {
logger.info("receive the message from client ["+message+"]");
session.getBasicRemote().sendText("服务器收到客户端的信息:"+message);
}
} simple.html
Testing websockets
var webSocket =new WebSocket('ws://localhost:8077/web/SimpleWebSocket');
webSocket.onerror = function(event) {
console.log("error ... ");
console.log(event.data);
};
webSocket.onopen = function(event) {
console.log("open ... ");
console.log(event.data)
};
webSocket.onmessage = function(event) {
console.log(":"+event.data);
};
var btn = document.getElementById("button");
var input = document.getElementById("input");
btn.onclick = function(){
var value = input.value;
webSocket.send(value);
input.value="";
};
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