经过在网上看各位前辈的代码和粘贴复制终于整理出来了
目录
DemoController类
package com.Config;
import java.io.IOException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.ModelAndView;
import com.Redis.RedisUtil;
@RestController
public class DemoController {
@Autowired
private RedisUtil redisUtil;
//调用地址http://localhost:8080/index
@GetMapping("index")
public ResponseEntity<String> index(){
//redisUtil.set("aaa","sss");
return ResponseEntity.ok("请求成功");
}
@GetMapping("page")
public ModelAndView page(){
return new ModelAndView("websocket");
}
@RequestMapping("/push/{toUserId}")
public ResponseEntity<String> pushToWeb(String message, @PathVariable String toUserId) throws IOException {
WebSocketServer.sendInfo(message,toUserId);
return ResponseEntity.ok("MSG SEND SUCCESS");
}
}
SpringUtil类
package com.Config;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
@Component
public class SpringUtil implements ApplicationContextAware {
private static ApplicationContext applicationContext;
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
SpringUtil.applicationContext = applicationContext;
}
public ApplicationContext getApplicationContext(){
return applicationContext;
}
public static Object getBean(String beanName){
return applicationContext.getBean(beanName);
}
public static <T> T getBean(Class<T> clazz){
return (T)applicationContext.getBean(clazz);
}
}
WebSocketServer类
package com.Config;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.concurrent.ConcurrentHashMap;
import javax.annotation.Resource;
import javax.websocket.OnClose;
import javax.websocket.OnError;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import com.Redis.RedisUtil;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import cn.hutool.log.Log;
import cn.hutool.log.LogFactory;
@ServerEndpoint("/imserver/{userId}")
@Component
public class WebSocketServer {
static Log log=LogFactory.get(WebSocketServer.class);
/**静态变量，用来记录当前在线连接数。应该把它设计成线程安全的。*/
private static int onlineCount = 0;
/**concurrent包的线程安全Set，用来存放每个客户端对应的MyWebSocket对象。*/
private static ConcurrentHashMap<String,WebSocketServer> webSocketMap = new ConcurrentHashMap<>();
/**与某个客户端的连接会话，需要通过它来给客户端发送数据*/
private Session session;
/**接收userId*/
private String userId="";
@Autowired
private RedisUtil redisUtil = SpringUtil.getBean(RedisUtil.class);
/**
* 连接建立成功调用的方法*/
@OnOpen
public void onOpen(Session session,@PathParam("userId") String userId) {
this.session = session;
this.userId=userId;
if(webSocketMap.containsKey(userId)){
webSocketMap.remove(userId);
webSocketMap.put(userId,this);
//加入set中
}else{
webSocketMap.put(userId,this);
//加入set中
addOnlineCount();
//在线数加1
}
log.info("用户连接:"+userId+",当前在线人数为:" + getOnlineCount());
try {
sendMessage("连接成功");
} catch (IOException e) {
log.error("用户:"+userId+",网络异常!!!!!!");
}
}
/**
* 连接关闭调用的方法
*/
@OnClose
public void onClose() {
if(webSocketMap.containsKey(userId)){
webSocketMap.remove(userId);
//从set中删除
subOnlineCount();
}
log.info("用户退出:"+userId+",当前在线人数为:" + getOnlineCount());
}
/**
* 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*/
@OnMessage
public void onMessage(String message, Session session) {
log.info("用户消息:"+userId+",报文:"+message);
//可以群发消息
//消息保存到数据库、redis
if(StringUtils.isNotBlank(message)){
try {
//解析发送的报文
JSONObject jsonObject = JSON.parseObject(message);
//追加发送人(防止串改)
jsonObject.put("fromUserId",this.userId);
String toUserId=jsonObject.getString("ToUserId");
SimpleDateFormat df = new SimpleDateFormat("yyyyMMddhhmmss");
String date=df.format(new Date());
System.out.println("Redis:"+date);
redisUtil.set(date,message);
System.out.println(redisUtil.get(date));
//传送给对应toUserId用户的websocket
if(StringUtils.isNotBlank(toUserId)&&webSocketMap.containsKey(toUserId)){
webSocketMap.get(toUserId).sendMessage(jsonObject.toJSONString());
}else{
log.error("请求的userId:"+toUserId+"不在该服务器上");
//否则不在这个服务器上，发送到mysql或者redis
}
}catch (Exception e){
e.printStackTrace();
}
}
}
/**
*
* @param session
* @param error
*/
@OnError
public void onError(Session session, Throwable error) {
log.error("用户错误:"+this.userId+",原因:"+error.getMessage());
error.printStackTrace();
}
/**
* 实现服务器主动推送
*/
public void sendMessage(String message) throws IOException {
this.session.getBasicRemote().sendText(message);
}
/**
* 发送自定义消息
* */
public static void sendInfo(String message,@PathParam("userId") String userId) throws IOException {
log.info("发送消息到:"+userId+"，报文:"+message);
if(StringUtils.isNotBlank(userId)&&webSocketMap.containsKey(userId)){
webSocketMap.get(userId).sendMessage(message);
}else{
log.error("用户"+userId+",不在线！");
}
}
public static synchronized int getOnlineCount() {
return onlineCount;
}
public static synchronized void addOnlineCount() {
WebSocketServer.onlineCount++;
}
public static synchronized void subOnlineCount() {
WebSocketServer.onlineCount--;
}
public String GetXH(){
Date date = new Date();
String yearMonthDay = String.format("%tF",date);//获取年月日
String hourMinuteSecond = String.format("%tT",date);//获取时分秒
return yearMonthDay+hourMinuteSecond;
}
}
RedisConfig类
package com.Redis;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
@Configuration
public class RedisConfig {
@Bean
@SuppressWarnings("all")
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
template.setConnectionFactory(factory);
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
// key采用String的序列化方式
template.setKeySerializer(stringRedisSerializer);
// hash的key也采用String的序列化方式
template.setHashKeySerializer(stringRedisSerializer);
// value序列化方式采用jackson
template.setValueSerializer(jackson2JsonRedisSerializer);
// hash的value序列化方式采用jackson
template.setHashValueSerializer(jackson2JsonRedisSerializer);
template.afterPropertiesSet();
return template;
}
}
RedisUtil类
package com.Redis;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import javax.annotation.Resource;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;
@Component
public class RedisUtil {
@Resource
private RedisTemplate<String, Object> redisTemplate;
// =============================common============================
/**
* 指定缓存失效时间
* @param key 键
* @param time 时间(秒)
* @return
*/
public boolean expire(String key, long time) {
try {
if (time > 0) {
redisTemplate.expire(key, time, TimeUnit.SECONDS);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 根据key 获取过期时间
* @param key 键 不能为null
* @return 时间(秒) 返回0代表为永久有效
*/
public long getExpire(String key) {
return redisTemplate.getExpire(key, TimeUnit.SECONDS);
}
/**
* 判断key是否存在
* @param key 键
* @return true 存在 false不存在
*/
public boolean hasKey(String key) {
try {
return redisTemplate.hasKey(key);
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 删除缓存
* @param key 可以传一个值 或多个
*/
@SuppressWarnings("unchecked")
public void del(String... key) {
if (key != null && key.length > 0) {
if (key.length == 1) {
redisTemplate.delete(key[0]);
} else {
redisTemplate.delete(CollectionUtils.arrayToList(key));
}
}
}
// ============================String=============================
/**
* 普通缓存获取
* @param key 键
* @return 值
*/
public Object get(String key) {
return key == null ? null : redisTemplate.opsForValue().get(key);
}
/**
* 普通缓存放入
* @param key 键
* @param value 值
* @return true成功 false失败
*/
public boolean set(String key, Object value) {
try {
redisTemplate.opsForValue().set(key, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 普通缓存放入并设置时间
* @param key 键
* @param value 值
* @param time 时间(秒) time要大于0 如果time小于等于0 将设置无限期
* @return true成功 false 失败
*/
public boolean set(String key, Object value, long time) {
try {
if (time > 0) {
redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
} else {
set(key, value);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 递增
* @param key 键
* @param delta 要增加几(大于0)
* @return
*/
public long incr(String key, long delta) {
if (delta < 0) {
throw new RuntimeException("递增因子必须大于0");
}
return redisTemplate.opsForValue().increment(key, delta);
}
/**
* 递减
* @param key 键
* @param delta 要减少几(小于0)
* @return
*/
public long decr(String key, long delta) {
if (delta < 0) {
throw new RuntimeException("递减因子必须大于0");
}
return redisTemplate.opsForValue().increment(key, -delta);
}
// ================================Map=================================
/**
* HashGet
* @param key 键 不能为null
* @param item 项 不能为null
* @return 值
*/
public Object hget(String key, String item) {
return redisTemplate.opsForHash().get(key, item);
}
/**
* 获取hashKey对应的所有键值
* @param key 键
* @return 对应的多个键值
*/
public Map<Object, Object> hmget(String key) {
return redisTemplate.opsForHash().entries(key);
}
/**
* HashSet
* @param key 键
* @param map 对应多个键值
* @return true 成功 false 失败
*/
public boolean hmset(String key, Map<String, Object> map) {
try {
redisTemplate.opsForHash().putAll(key, map);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* HashSet 并设置时间
* @param key 键
* @param map 对应多个键值
* @param time 时间(秒)
* @return true成功 false失败
*/
public boolean hmset(String key, Map<String, Object> map, long time) {
try {
redisTemplate.opsForHash().putAll(key, map);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 向一张hash表中放入数据,如果不存在将创建
* @param key 键
* @param item 项
* @param value 值
* @return true 成功 false失败
*/
public boolean hset(String key, String item, Object value) {
try {
redisTemplate.opsForHash().put(key, item, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 向一张hash表中放入数据,如果不存在将创建
* @param key 键
* @param item 项
* @param value 值
* @param time 时间(秒) 注意:如果已存在的hash表有时间,这里将会替换原有的时间
* @return true 成功 false失败
*/
public boolean hset(String key, String item, Object value, long time) {
try {
redisTemplate.opsForHash().put(key, item, value);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 删除hash表中的值
* @param key 键 不能为null
* @param item 项 可以使多个 不能为null
*/
public void hdel(String key, Object... item) {
redisTemplate.opsForHash().delete(key, item);
}
/**
* 判断hash表中是否有该项的值
* @param key 键 不能为null
* @param item 项 不能为null
* @return true 存在 false不存在
*/
public boolean hHasKey(String key, String item) {
return redisTemplate.opsForHash().hasKey(key, item);
}
/**
* hash递增 如果不存在,就会创建一个 并把新增后的值返回
* @param key 键
* @param item 项
* @param by 要增加几(大于0)
* @return
*/
public double hincr(String key, String item, double by) {
return redisTemplate.opsForHash().increment(key, item, by);
}
/**
* hash递减
* @param key 键
* @param item 项
* @param by 要减少记(小于0)
* @return
*/
public double hdecr(String key, String item, double by) {
return redisTemplate.opsForHash().increment(key, item, -by);
}
// ============================set=============================
/**
* 根据key获取Set中的所有值
* @param key 键
* @return
*/
public Set<Object> sGet(String key) {
try {
return redisTemplate.opsForSet().members(key);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 根据value从一个set中查询,是否存在
* @param key 键
* @param value 值
* @return true 存在 false不存在
*/
public boolean sHasKey(String key, Object value) {
try {
return redisTemplate.opsForSet().isMember(key, value);
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 将数据放入set缓存
* @param key 键
* @param values 值 可以是多个
* @return 成功个数
*/
public long sSet(String key, Object... values) {
try {
return redisTemplate.opsForSet().add(key, values);
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
/**
* 将set数据放入缓存
* @param key 键
* @param time 时间(秒)
* @param values 值 可以是多个
* @return 成功个数
*/
public long sSetAndTime(String key, long time, Object... values) {
try {
Long count = redisTemplate.opsForSet().add(key, values);
if (time > 0)
expire(key, time);
return count;
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
/**
* 获取set缓存的长度
* @param key 键
* @return
*/
public long sGetSetSize(String key) {
try {
return redisTemplate.opsForSet().size(key);
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
/**
* 移除值为value的
* @param key 键
* @param values 值 可以是多个
* @return 移除的个数
*/
public long setRemove(String key, Object... values) {
try {
Long count = redisTemplate.opsForSet().remove(key, values);
return count;
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
// ===============================list=================================
/**
* 获取list缓存的内容
* @param key 键
* @param start 开始
* @param end 结束 0 到 -1代表所有值
* @return
*/
public List<Object> lGet(String key, long start, long end) {
try {
return redisTemplate.opsForList().range(key, start, end);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 获取list缓存的长度
* @param key 键
* @return
*/
public long lGetListSize(String key) {
try {
return redisTemplate.opsForList().size(key);
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
/**
* 通过索引 获取list中的值
* @param key 键
* @param index 索引 index>=0时， 0 表头，1 第二个元素，依次类推；index<0时，-1，表尾，-2倒数第二个元素，依次类推
* @return
*/
public Object lGetIndex(String key, long index) {
try {
return redisTemplate.opsForList().index(key, index);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 将list放入缓存
* @param key 键
* @param value 值
* @param time 时间(秒)
* @return
*/
public boolean lSet(String key, Object value) {
try {
redisTemplate.opsForList().rightPush(key, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 将list放入缓存
* @param key 键
* @param value 值
* @param time 时间(秒)
* @return
*/
public boolean lSet(String key, Object value, long time) {
try {
redisTemplate.opsForList().rightPush(key, value);
if (time > 0)
expire(key, time);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 将list放入缓存
* @param key 键
* @param value 值
* @param time 时间(秒)
* @return
*/
public boolean lSet(String key, List<Object> value) {
try {
redisTemplate.opsForList().rightPushAll(key, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 将list放入缓存
*
* @param key 键
* @param value 值
* @param time 时间(秒)
* @return
*/
public boolean lSet(String key, List<Object> value, long time) {
try {
redisTemplate.opsForList().rightPushAll(key, value);
if (time > 0)
expire(key, time);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 根据索引修改list中的某条数据
* @param key 键
* @param index 索引
* @param value 值
* @return
*/
public boolean lUpdateIndex(String key, long index, Object value) {
try {
redisTemplate.opsForList().set(key, index, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 移除N个值为value
* @param key 键
* @param count 移除多少个
* @param value 值
* @return 移除的个数
*/
public long lRemove(String key, long count, Object value) {
try {
Long remove = redisTemplate.opsForList().remove(key, count, value);
return remove;
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
}
MainRun启动类
package com.Run;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.server.standard.ServerEndpointExporter;
@ComponentScan("com.Config")
@EnableAutoConfiguration
@Configuration
@ComponentScan("com.Redis")
public class MainRun extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(MainRun.class, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder){
return builder.sources(MainRun.class);
}
@Bean
public ServerEndpointExporter serverEndpointExporter() {
return new ServerEndpointExporter();
}
}
application.properties
spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.password=
spring.redis.pool.max-active=200
spring.redis.pool.max-wait=-1
spring.redis.pool.max-idle=10
spring.redis.pool.min-idle=0
spring.redis.timeout=1000
spring.jackson.date-format=yyyy-MM-dd HH:mm:ss
spring.jackson.time-zone=GMT+8
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.boot</groupId>
<artifactId>WebSocket</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<dependencies>
<!-- SpringBoot 核心组件 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- json -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.58</version>
</dependency>
<!-- WebSocket -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
<!-- 工具类 -->
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-log</artifactId>
<version>5.4.3</version>
</dependency>
<!-- 提供了许多许多通用的工具类集，提供了一些java.lang中类的扩展功能 -->
<dependency>
<groupId>org.mod4j.org.apache.commons</groupId>
<artifactId>lang</artifactId>
<version>2.1.0</version>
</dependency>
<!-- Redis -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
</dependencies>
</project>写一个HTML(不用写在SpringBoot中)
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>websocket通讯</title>
</head>
<script src="./Test/jquery-2.2.4.min.js"></script>
<script>
var socket;
function openSocket() {
if(typeof(WebSocket) == "undefined") {
console.log("您的浏览器不支持WebSocket");
}else{
console.log("您的浏览器支持WebSocket");
//实现化WebSocket对象，指定要连接的服务器地址与端口 建立连接
//等同于socket = new WebSocket("ws://localhost:8888/xxxx/im/25");
//var socketUrl="${request.contextPath}/im/"+$("#userId").val();
var socketUrl="http://localhost:8080/imserver/"+$("#userId").val();
socketUrl=socketUrl.replace("https","ws").replace("http","ws");
if(socket!=null){
socket.close();
socket=null;
}
socket = new WebSocket(socketUrl);
//打开事件
socket.onopen = function() {
console.log("websocket已打开");
//socket.send("这是来自客户端的消息" + location.href + new Date());
};
//获得消息事件
socket.onmessage = function(msg) {
if(msg.data!="连接成功"){
var json=JSON.parse(msg.data);
$("ol").append("<li>"+json.fromUserId+":"+json.ContentText+"</li>");
}
console.log(msg.data);
//发现消息进入 开始处理前端触发逻辑
};
//关闭事件
socket.onclose = function() {
console.log("websocket已关闭");
};
//发生了错误事件
socket.onerror = function() {
console.log("websocket发生了错误");
}
}
}
function closeSocket(){
socket.close();
console.log("websocket已关闭");
}
function sendMessage() {
if(typeof(WebSocket) == "undefined") {
console.log("您的浏览器不支持WebSocket");
}else {
var message = new Object();
message.ToUserId = $("#toUserId").val();
message.ContentText = $("#contentText").val()
message.SendTime = CurentTime();
var json = JSON.stringify(message);
$("ol").append("<li>"+$("#userId").val()+":"+$("#contentText").val()+"</li>");
console.log("您的浏览器支持WebSocket");
console.log(json);
socket.send(json);
}
}
</script>
<body>
<p>【当前Id】：<div><input id="userId" name="userId" type="text" value="10"></div>
<p>【发送到Id】：<div><input id="toUserId" name="toUserId" type="text" value="20"></div>
<p>【内容】：<div><input id="contentText" name="contentText" type="text" value=""></div>
<p>【聊天内容】：<div><ol></ol></div>
<p>【操作】：<div><a onclick="openSocket()">开启socket</a> <a onclick="closeSocket()">退出socket</a></div>
<p>【操作】：<div><a onclick="sendMessage()">发送消息</a></div>
</body>
<script>
function CurentTime(){
var now = new Date();
var year = now.getFullYear(); //年
var month = now.getMonth() + 1; //月
var day = now.getDate(); //日
var hh = now.getHours(); //时
var mm = now.getMinutes(); //分
var ss=now.getSeconds();
var clock = year + "-";
if(month < 10)
clock += "0";
clock += month + "-";
if(day < 10)
clock += "0";
clock += day + " ";
if(hh < 10)
clock += "0";
clock += hh + ":";
if (mm < 10) clock += '0';
clock += mm+":"+ss;
return(clock);
}
</script>
</html>
下载Redis开启 配置不一样 在application.properties改即可
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