使用websocket与redis实现主动推送数据（附配置）
使用websocket与redis实现主动推送数据（附配置）第一次写博客，写的不好，将就看先介绍一下整体项目，有一个数据接收服务器，一个数据展示服务器，所以使用redis来推送数据，本博客是介绍如何使用websocket与redis来实现主动的数据推送，框架部分使用Springboot,数据库使用mysql,数据库中间件使用ShardingSphere(顺便吐槽一下ShardingSpaere..
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使用websocket与redis实现主动推送数据（附配置）
第一次写博客，写的不好，将就看
先介绍一下整体项目，有一个数据接收服务器，一个数据展示服务器，所以使用redis来推送数据，本博客是介绍如何使用websocket与redis来实现主动的数据推送，框架部分使用Springboot,数据库使用mysql,数据库中间件使用ShardingSphere(顺便吐槽一下ShardingSpaere不支持子查询的问题)，，本文中会把功能如何实现，配置，思路等都写出来，也是防止自己时间长忘记了。
前段获取数据的几种方式
前端主动获取
一种就是前段主动获取数据，这种方式有很多，axios,jq,dwr，等等，有很多，我就不一一说明了，这种获取方式的特点就是后端被动（思想转变过来），只能由前端发起请求，后端被动的返回数据，平常情况下很好使，但是遇到需要实时获取数据的就有点麻烦，ajax虽然可以实时获取，但他也是采用寻轮的方式，通过不断的往后端发送请求来返回数据，虽然缓存的存在，可以省去一点性能消耗，但是对后端也是一种很大的开销，特别是数据量大，查询时间长的情况下，现在我写的后台就是，ajax广大朋友们应该就有个差不多的认识，不说了。
前端被动获取
还一种就是前端被动获取数据，这种方式我主要使用的的websocket来实现，特备适合于数据推送，节约性能消耗，websocket,采用ws协议，跟普通的http,https有很大的不同，当然ws协议也就安全的wss,对协议感兴趣的可以自行百度。废话不多少，上代码。
1.webscoket前端代码，数据是从thymleaf里面获取的，里面掺杂了我自己的代码逻辑，等下会贴出精简部分
yml里的webscoket路径配置下面代码会用到
#你自己的websocket路径
webscoketUrl:
url: ws://*.*.*.com/websocket
`
<script th:inline="javascript">
var wensocketUrl = [[${websocketUrl}]];
var websocket = null;
var Pressurearr = [];
var Battery = [];
var CH4arr = [];
var Humiturearr = [];
var Warnarr = [];
var SignalIntensityarr = [];
var Locationarr = [];
var converdata = {};
function createJson(prop, val) {
// 如果 val 被忽略
if(typeof val === "undefined") {
// 删除属性
delete converdata[prop];
}else {
// 添加 或 修改
converdata[prop] = val;
}
}
//判断当前浏览器是否支持WebSocket
if('WebSocket' in window){
websocket = new WebSocket(wensocketUrl);
} else{
alert('Not support websocket!当前浏览器版本过低，请使用高版本浏览器')
}
//连接发生错误的回调方法
websocket.onerror = function(){
alert("error:websocket连接发生问题！请检查网络连接！");
};
//连接成功建立的回调方法
websocket.onopen = function(event){
console.log("open：连接已打开");
}
//接收到消息的回调方法
websocket.onmessage = function(event){
setMessageInnerHTML(event.data);
}
//连接关闭的回调方法
websocket.onclose = function(){
console.log("close");
}
//监听窗口关闭事件，当窗口关闭时，主动去关闭websocket连接，防止连接还没断开就关闭窗口，server端会抛异常。
window.onbeforeunload = function(){
websocket.close();
}
//将消息显示在网页上
function setMessageInnerHTML(data){
// document.getElementById('message').innerHTML += innerHTML + '<br/>';
var jsonlist = JSON.parse(data);
if (jsonlist[0]=="Pressure"){
//Pressurearr.push(jsonlist[1]);
}else if(jsonlist[0]=="Battery"){
//Battery.push(jsonlist[1]);
var a = jsonlist[1].substr(1,jsonlist[1].length-2);
var ch4data = JSON.parse(a);
var redisdeviceid = ch4data.deviceId;
createJson("batteries",JSON.parse(jsonlist[1].substr(1,jsonlist[1].length-2)));
if (typeof converdata.signalIntensities!="undefined"&&typeof converdata.warns!="undefined"){
changeicondata(converdata);
for (var i = 0; i <deviceidArray.length ; i++) {
if (redisdeviceid == deviceidArray[i]){
if (resultPoint.length==deviceidArray.length){
$("#devicenum_cc").text("NO:"+deviceNumArray[i]);
}
}
}
}
}else if(jsonlist[0]=="CH4"){
//console.log("CH4数据"+jsonlist);
CH4arr.push(jsonlist[1]);
//console.log(jsonlist[1]);
var a = jsonlist[1].substr(1,jsonlist[1].length-2);
var ch4data = JSON.parse(a);
var sys_norm = [[${sysNorm}]];
var safety = sys_norm.safety;
var min_worn = sys_norm.minWarn;
var max_worn = sys_norm.maxWarn;
var redisdeviceid = ch4data.deviceId;
//如果数据小于安全数据
if (ch4data.concentration<safety){
//如果数据处于警戒位
}else if(min_worn<=ch4data.concentration&&ch4data.concentration<max_worn){
for (var i = 0; i <deviceidArray.length ; i++) {
if (redisdeviceid == deviceidArray[i]){
if (resultPoint.length==deviceidArray.length){
// map.clearOverlays();
// var myIcon;
// //myIcon = new BMap.Icon("/img/red_point.png", new BMap.Size(32,32));
// myIcon = new BMap.Icon("/img/yellow_point.png", new BMap.Size(32,32));
// //myIcon = new BMap.Icon("/img/blue_point.png", new BMap.Size(32,32));
// var marker = new BMap.Marker(resultPoint[i],{icon:myIcon});
// marker.addEventListener("click", showInfo);
}
}
}
//如果数据处于报警位
}else if (ch4data.concentration>=max_worn){
for (var i = 0; i <deviceidArray.length ; i++) {
if (redisdeviceid == deviceidArray[i]){
if (resultPoint.length==deviceidArray.length){
// var myIcon;
// myIcon = new BMap.Icon("/img/red_point.png", new BMap.Size(32,32));
// //myIcon = new BMap.Icon("/img/yellow_point.png", new BMap.Size(32,32));
// //myIcon = new BMap.Icon("/img/blue_point.png", new BMap.Size(32,32));
// var marker = new BMap.Marker(resultPoint[i],{icon:myIcon});
// marker.addEventListener("click", showInfo);
$("#errorModleid").show();
//console.log("设备编号："+deviceNumArray[i]);
$("#devicenumerror").text("NO:"+deviceNumArray[i]);
playaudio();
$.get("/weixinTemplate/templateInfomation?devicenum="+deviceNumArray[i],function (data) {
})
}
}
}
}
}else if(jsonlist[0]=="Humiture"){
//Humiturearr.push(jsonlist[1]);
}else if(jsonlist[0]=="Warn"){
//Warnarr.push(jsonlist[1]);
var a = jsonlist[1].substr(1,jsonlist[1].length-2);
var ch4data = JSON.parse(a);
var redisdeviceid = ch4data.deviceId;
createJson("warns",JSON.parse(jsonlist[1].substr(1,jsonlist[1].length-2)));
if (typeof converdata.signalIntensities!="undefined"&&typeof converdata.batteries!="undefined"){
changeicondata(converdata);
for (var i = 0; i <deviceidArray.length ; i++) {
if (redisdeviceid == deviceidArray[i]){
if (resultPoint.length==deviceidArray.length){
$("#devicenum_cc").text("NO:"+deviceNumArray[i]);
}
}
}
}
}else if(jsonlist[0]=="SignalIntensity"){
//SignalIntensityarr.push(jsonlist[1]);
var a = jsonlist[1].substr(1,jsonlist[1].length-2);
var ch4data = JSON.parse(a);
var redisdeviceid = ch4data.deviceId;
createJson("signalIntensities",JSON.parse(jsonlist[1].substr(1,jsonlist[1].length-2)));
if (typeof converdata.warns!="undefined"&&typeof converdata.batteries!="undefined"){
changeicondata(converdata);
for (var i = 0; i <deviceidArray.length ; i++) {
if (redisdeviceid == deviceidArray[i]){
if (resultPoint.length==deviceidArray.length){
$("#devicenum_cc").text("NO:"+deviceNumArray[i]);
}
}
}
}
}else if(jsonlist[0]=="Location"){
//Locationarr.push(jsonlist[1]);
}
}
//关闭连接
function closeWebSocket(){
websocket.close();
}
//发送消息
// function send(){
// var message = document.getElementById('text').value;
// websocket.send(message);
// }
</script>`
前端精简websocket代码
<script type="text/javascript">
//判断当前浏览器是否支持WebSocket
if ('WebSocket' in window) {
//路径里的ws不要换，如果是安全协议可以使用wss,
//顺带说明ngrok跟nginx需要单独配
//路径写你websocket的路径，后面会有
websocket = new WebSocket("ws://localhost:8080/websocket");
//连接发生错误的回调方法
websocket.onerror = function () {
setMessageInnerHTML("WebSocket连接发生错误");
};
//连接成功建立的回调方法
websocket.onopen = function () {
setMessageInnerHTML("WebSocket连接成功");
}
//接收到消息的回调方法
websocket.onmessage = function (event) {
setMessageInnerHTML(event.data);
}
//连接关闭的回调方法
websocket.onclose = function () {
setMessageInnerHTML("WebSocket连接关闭");
}
//监听窗口关闭事件，当窗口关闭时，主动去关闭websocket连接，防止连接还没断开就关闭窗口，server端会抛异常。
window.onbeforeunload = function () {
closeWebSocket();
}
}
else {
alert('当前浏览器 Not support websocket')
}
};
//将消息显示在网页上
function setMessageInnerHTML(innerHTML) {
document.getElementById('message').innerHTML += innerHTML + '<br/>';
}
//关闭WebSocket连接
function closeWebSocket() {
websocket.close();
}
//发送消息
function send() {
var message = document.getElementById('text').value;
websocket.send(message);
}
</script>
前端到这就结束了，开始后端配置，定义配置类
package com.zkjh.subservice_web.iot.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.server.standard.ServerEndpointExporter;
@Configuration
public class WebSocketConfig {
@Bean
public ServerEndpointExporter serverEndpointExporter() {
return new ServerEndpointExporter();
}
}
package com.zkjh.subservice_web.iot.config;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import javax.websocket.*;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.concurrent.CopyOnWriteArraySet;
//前端路径
@ServerEndpoint(value = "/websocket")
@Component
@Slf4j
public class WebSocketServer {
//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 CopyOnWriteArraySet<WebSocketServer> webSocketSet = new CopyOnWriteArraySet<WebSocketServer>();
//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;
/**
* 收到客户端消息后调用的方法
* 在此处已预留可以添加需要推送的硬件信息 目前来看项目不需要选择推送温湿度，浓度，压强等数据
* @param message 客户端发送过来的消息
* @functionname onMassage
* @author zhp
* */
@OnMessage
public void onMessage(String message, Session session) {
//群发消息
for (WebSocketServer item : webSocketSet) {
try {
item.sendMessage(message);
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* 实现服务器主动推送
*/
public void sendMessage(String message) throws IOException {
synchronized (session) {
this.session.getBasicRemote().sendText(message);
}
}
/**
* 群发自定义消息
* */
public static void sendInfo(String message) {
log.info("推送消息到窗口");
for (WebSocketServer item : webSocketSet) {
try {
//这里可以设定全部推送
item.sendMessage(message);
} catch (IOException e) {
continue;
}
}
}
/**
*
* @param session
* @param error
*/
@OnError
public void onError(Session session, Throwable error) {
log.error("websocket发生错误" + error);
error.printStackTrace();
}
@OnOpen
public void onOpen(Session session) {
this.session = session;
webSocketSet.add(this); //加入set中
log.info("websocket:有新连接开始监听!");
}
/**
* 连接关闭调用的方法
*/
@OnClose
public void onClose() {
webSocketSet.remove(this); //从set中删除
log.info("连接关闭！");
}
}
websocket后端配置结束
redis配置
package com.zkjh.subservice_web.iot.config;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
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.*;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {
/**
* retemplate相关配置
* @param factory
* @return
*/
@Bean
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
RedisTemplate<String, Object> template = new RedisTemplate<>();
// 配置连接工厂
template.setConnectionFactory(factory);
//使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值（默认使用JDK的序列化方式）
Jackson2JsonRedisSerializer jacksonSeial = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper om = new ObjectMapper();
// 指定要序列化的域，field,get和set,以及修饰符范围，ANY是都有包括private和public
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
// 指定序列化输入的类型，类必须是非final修饰的，final修饰的类，比如String,Integer等会跑出异常
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jacksonSeial.setObjectMapper(om);
// 值采用json序列化
template.setValueSerializer(jacksonSeial);
//使用StringRedisSerializer来序列化和反序列化redis的key值
template.setKeySerializer(new StringRedisSerializer());
// 设置hash key 和value序列化模式
template.setHashKeySerializer(new StringRedisSerializer());
template.setHashValueSerializer(jacksonSeial);
template.afterPropertiesSet();
return template;
}
/**
* 对hash类型的数据操作
*
* @param redisTemplate
* @return
*/
@Bean
public HashOperations<String, String, Object> hashOperations(RedisTemplate<String, Object> redisTemplate) {
return redisTemplate.opsForHash();
}
/**
* 对redis字符串类型数据操作
*
* @param redisTemplate
* @return
*/
@Bean
public ValueOperations<String, Object> valueOperations(RedisTemplate<String, Object> redisTemplate) {
return redisTemplate.opsForValue();
}
/**
* 对链表类型的数据操作
*
* @param redisTemplate
* @return
*/
@Bean
public ListOperations<String, Object> listOperations(RedisTemplate<String, Object> redisTemplate) {
return redisTemplate.opsForList();
}
/**
* 对无序集合类型的数据操作
*
* @param redisTemplate
* @return
*/
@Bean
public SetOperations<String, Object> setOperations(RedisTemplate<String, Object> redisTemplate) {
return redisTemplate.opsForSet();
}
/**
* 对有序集合类型的数据操作
*
* @param redisTemplate
* @return
*/
@Bean
public ZSetOperations<String, Object> zSetOperations(RedisTemplate<String, Object> redisTemplate) {
return redisTemplate.opsForZSet();
}
}
封装从redis获取数据的工具类
package com.zkjh.subservice_web.iot.config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;
@Component
public class RedisUtils {
@Autowired
private RedisTemplate<String, Object> redisTemplate;
public RedisUtils(RedisTemplate<String, Object> redisTemplate) {
this.redisTemplate = redisTemplate;
}
/**
* 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
* @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
* @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;
}
}
}
redis的properties配置
########redis##########
# Redis默认数据库索引
spring.redis.database=0
# Redis数据库连接路径
#spring.redis.host=127.0.0.1
spring.redis.host=192.168.2.155
# Redis端口号
spring.redis.port=6379
# Redis密码
spring.redis.password=
# 最大超时时间
spring.redis.timeout=30000
从redis消息队列中读取消息
package com.zkjh.subservice_web.iot.RedisMessageListener;
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.StringRedisTemplate;
import org.springframework.data.redis.listener.PatternTopic;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.data.redis.listener.adapter.MessageListenerAdapter;
@Configuration
public class RedisMessageListener{
//不同的频道名
private static final String channel = "Battery";
private static final String channel2 = "CH4";
private static final String channel3 = "Humiture";
private static final String channel4 = "Location";
private static final String channel5 = "Pressure";
private static final String channel6 = "SignalIntensity";
private static final String channel7 = "Warn";
private static final String channeTimeOut = "__key*@0__:expired";
/**
* redis消息监听器容器
* 可以添加多个监听不同话题的redis监听器，只需要把消息监听器和相应的消息订阅处理器绑定，该消息监听器
* 通过反射技术调用消息订阅处理器的相关方法进行一些业务处理
* @param connectionFactory
* @param listenerAdapter
* @return
*/
@Bean//相当于xml中的bean
RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory,
MessageListenerAdapter listenerAdapter, MessageListenerAdapter listenerAdapter2,MessageListenerAdapter listenerAdapter3,
MessageListenerAdapter listenerAdapter4,MessageListenerAdapter listenerAdapter5,MessageListenerAdapter listenerAdapter6,
MessageListenerAdapter listenerAdapter7,MessageListenerAdapter listenerAdapterTimeOut) {
RedisMessageListenerContainer container = new RedisMessageListenerContainer();
container.setConnectionFactory(connectionFactory);
//listenerAdapter的通道
container.addMessageListener(listenerAdapter, new PatternTopic(RedisMessageListener.channel));
container.addMessageListener(listenerAdapter2, new PatternTopic(RedisMessageListener.channel2));
container.addMessageListener(listenerAdapter3, new PatternTopic(RedisMessageListener.channel3));
container.addMessageListener(listenerAdapter4, new PatternTopic(RedisMessageListener.channel4));
container.addMessageListener(listenerAdapter5, new PatternTopic(RedisMessageListener.channel5));
container.addMessageListener(listenerAdapter6, new PatternTopic(RedisMessageListener.channel6));
container.addMessageListener(listenerAdapter7, new PatternTopic(RedisMessageListener.channel7));
container.addMessageListener(listenerAdapterTimeOut, new PatternTopic(RedisMessageListener.channeTimeOut));
return container;
}
/**
* 消息监听器适配器，绑定消息处理器，利用反射技术调用消息处理器的业务方法
* @param receiver
* @return
*/
@Bean
MessageListenerAdapter listenerAdapter(MessageReceiver receiver) {
return new MessageListenerAdapter(receiver, "receiveMessage");
}
@Bean
MessageListenerAdapter listenerAdapter2(MessageReceiver receiver) {
return new MessageListenerAdapter(receiver, "receiveMessage2");
}
@Bean
MessageListenerAdapter listenerAdapter3(MessageReceiver receiver) {
return new MessageListenerAdapter(receiver, "receiveMessage3");
}
@Bean
MessageListenerAdapter listenerAdapter4(MessageReceiver receiver) {
return new MessageListenerAdapter(receiver, "receiveMessage4");
}
@Bean
MessageListenerAdapter listenerAdapter5(MessageReceiver receiver) {
return new MessageListenerAdapter(receiver, "receiveMessage5");
}
@Bean
MessageListenerAdapter listenerAdapter6(MessageReceiver receiver) {
return new MessageListenerAdapter(receiver, "receiveMessage6");
}
@Bean
MessageListenerAdapter listenerAdapter7(MessageReceiver receiver) {
return new MessageListenerAdapter(receiver, "receiveMessage7");
}
/**redis 读取内容的template */
@Bean
StringRedisTemplate template(RedisConnectionFactory connectionFactory) {
return new StringRedisTemplate(connectionFactory);
}
/**
* 监听redis超时
* @param receiver
* @return
*/
@Bean
MessageListenerAdapter listenerAdapterTimeOut(MessageReceiver receiver) {
return new MessageListenerAdapter(receiver, "receiveMessageTimeOut");
}
}
消息监听器配置完成，写发送消息的类
package com.zkjh.subservice_web.iot.RedisMessageListener;
import com.alibaba.fastjson.JSONObject;
import com.zkjh.subservice_web.iot.config.WebSocketServer;
import com.zkjh.subservice_web.iot.nb_iot.api.Authorization.AppAuthorization;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import java.util.ArrayList;
import java.util.List;
@Component
@Slf4j
public class MessageReceiver {
@Autowired
private AppAuthorization appAuthorization;
// String Battery;
// String CH4;
// String Humiture;
// String Location;
// String Pressure;
// String SignalIntensity;
// String Warn;
WebSocketServer webSocketServer = new WebSocketServer();
/**Battery*/
public void receiveMessage(String message){
System.out.println("Battery："+message);
// Battery = message;
List list = new ArrayList();
list.add("Battery");
list.add(message.replaceAll("\\\\",""));
String json = JSONObject.toJSONString(list);
log.info("Battery Data is loading out");
try {
webSocketServer.sendInfo(json);
} catch (Exception e) {
log.info("消息发送失败！IO异常"+e);
e.printStackTrace();
}
//return message;
}
/**CH4*/
public void receiveMessage2(String message){
System.out.println("CH4："+message);
//CH4.add(message);
List list = new ArrayList();
list.add("CH4");
list.add(message.replaceAll("\\\\",""));
String json = JSONObject.toJSONString(list);
log.info("CH4 Data is loading out");
try {
webSocketServer.sendInfo(json);
} catch (Exception e) {
log.info("消息发送失败！IO异常"+e);
e.printStackTrace();
}
//return message;
}
/**Humiture*/
public void receiveMessage3(String message){
System.out.println("Humiture："+message);
//Humiture.add(message);
List list = new ArrayList();
list.add("Humiture");
list.add(message.replaceAll("\\\\",""));
String json = JSONObject.toJSONString(list);
log.info("Humiture Data is loading out");
try {
webSocketServer.sendInfo(json);
} catch (Exception e) {
log.info("消息发送失败！IO异常"+e);
e.printStackTrace();
}
//return message;
}
/**Location*/
public void receiveMessage4(String message){
System.out.println("Location："+message);
//Location.add(message);
List list = new ArrayList();
list.add("Location");
list.add(message.replaceAll("\\\\",""));
String json = JSONObject.toJSONString(list);
log.info("Location Data is loading out");
try {
webSocketServer.sendInfo(json);
} catch (Exception e) {
log.info("消息发送失败！IO异常"+e);
e.printStackTrace();
}
//return message;
}
/**Pressure*/
public void receiveMessage5(String message){
System.out.println("Pressure："+message);
//Pressure.add(message);
List list = new ArrayList();
list.add("Pressure");
list.add(message.replaceAll("\\\\",""));
String json = JSONObject.toJSONString(list);
log.info("Pressure Data is loading out");
try {
webSocketServer.sendInfo(json);
} catch (Exception e) {
log.info("消息发送失败！IO异常"+e);
e.printStackTrace();
}
//return message;
}
/**SignalIntensity*/
public void receiveMessage6(String message){
System.out.println("SignalIntensity："+message);
//SignalIntensity.add(message);
List list = new ArrayList();
list.add("SignalIntensity");
list.add(message.replaceAll("\\\\",""));
String json = JSONObject.toJSONString(list);
log.info("SignalIntensity Data is loading out");
try {
webSocketServer.sendInfo(json);
} catch (Exception e) {
log.info("消息发送失败！IO异常"+e);
e.printStackTrace();
}
//return message;
}
/**Warn*/
public void receiveMessage7(String message){
System.out.println("Warn："+message);
//Warn.add(message);
List list = new ArrayList();
list.add("Warn");
list.add(message.replaceAll("\\\\",""));
String json = JSONObject.toJSONString(list);
log.info("Warn Data is loading out");
try {
webSocketServer.sendInfo(json);
} catch (Exception e) {
log.info("消息发送失败！IO异常"+e);
e.printStackTrace();
}
//return message;
}
public void receiveMessageTimeOut(String message){
if(message.equals("accessToken")){
// 1小时超时
// 调用刷新accessToken接口
log.info("accessToken超时");
try {
appAuthorization.getRefreshToken();
} catch (Exception e) {
log.info("accessToken超时:刷新accessToken失败！");
e.printStackTrace();
}
}
if( message.equals("refreshToken")){
// 1天超时
// 调用刷新鉴权接口获取 accessToken 和 refreshToken
log.info("refreshToken超时");
try {
appAuthorization.getAppAuthorizationInfo();
} catch (Exception e) {
log.info("refreshToken超时:重新获取accessToken失败！");
e.printStackTrace();
}
}
}
}
至此接收端所有配置完成，最后一步还需要主动发送数据部分，因为我的这项目还有一个数据接收服务器，所以往消息队列中存数据的点在另外一个服务器，其中redis的配置都一样，相关代码都已经去掉，只填了一些测试数据
package com.zkjh.znwlw_service.service.redisPublish;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
@Service
public class Publish {
@Autowired
//这个地方需要配置redis,领起一个项目配置都一样，另起一个项目配一下 就行
private RedisTemplate<String, Object> redisTemplate;
public void sendMessage(String aa,String bb) {
String channel = "Battery";//在哪个频道里发数据
String msg = "{" +//发什么数据
"\"deviceId\":\"e9584627ad1711e9910500d861316026\"," +
"\"gatewayId\":\"8280c8ec-cbb9-4385-98b0-96cbebcded1d\"," +
"\"batteryLevel\":\"3\"," +
"\"EventTime\":\"2019-07-23 21:15:55\"" +
"}";
// JSONObject jsonObject = JSONObject.parseObject(msg);
// String json = JSON.toJSONString(jsonObject);
// Map map = new HashMap();
// map.put(channel,jsonObject);
redisTemplate.convertAndSend(channel, msg);
String CH4 = "CH4";
String msg1 = "{" +
"\"deviceId\":\"e9584627ad1711e9910500d861316026\"," +
"\"gatewayId\":\"8280c8ec-cbb9-4385-98b0-96cbebcded1d\"," +
"\"concentration\":\"3\"," +
"\"faultCodeNum\":\"01\"," +
"\"EventTime\":\"2019-07-23 21:15:55\"" +
"}";
//JSONObject jsonObject1 = JSONObject.parseObject(msg1);
redisTemplate.convertAndSend(CH4, msg1);
String Humiture = "Humiture";
String msg2 = "{" +
"\"deviceId\":\"e9584627ad1711e9910500d861316026\"," +
"\"gatewayId\":\"8280c8ec-cbb9-4385-98b0-96cbebcded1d\"," +
"\"temp\":\"0.2\"," +
"\"EventTime\":\"2019-07-23 21:15:55\"" +
"}";
//JSONObject jsonObject2 = JSONObject.parseObject(msg2);
redisTemplate.convertAndSend(Humiture, msg2);
String Location = "Location";
String msg3 = "{" +
"\"deviceId\":\"e9584627ad1711e9910500d861316026\"," +
"\"gatewayId\":\"8280c8ec-cbb9-4385-98b0-96cbebcded1d\"," +
"\"latitude\":\"31.244163\"," +
"\"longtitude\":\"119.077009\"," +
"\"EventTime\":\"2019-07-23 21:15:55\"" +
"}";
//JSONObject jsonObject3 = JSONObject.parseObject(msg3);
redisTemplate.convertAndSend(Location, msg3);
String Pressure = "Pressure";
String msg4 ="{" +
"\"deviceId\":\"e9584627ad1711e9910500d861316026\"," +
"\"gatewayId\":\"8280c8ec-cbb9-4385-98b0-96cbebcded1d\"," +
"\"atmoPressure\":\"70.51\"," +
"\"EventTime\":\"2019-07-23 21:15:55\"" +
"}";
//JSONObject jsonObject4 = JSONObject.parseObject(msg4);
redisTemplate.convertAndSend(Pressure, msg4);
String SignalIntensity = "SignalIntensity";
String msg5 = "{"+
"\"deviceId\":\"e9584627ad1711e9910500d861316026\"," +
"\"gatewayId\":\"8280c8ec-cbb9-4385-98b0-96cbebcded1d\"," +
"\"rssi\":\"8\"," +
"\"EventTime\":\"2019-07-23 21:15:55\"" +
"}";
//JSONObject jsonObject5 = JSONObject.parseObject(msg5);
redisTemplate.convertAndSend(SignalIntensity, msg5);
String Warn = "Warn";
String msg6 = "{"+
"\"deviceId\":\"e9584627ad1711e9910500d861316026\"," +
"\"gatewayId\":\"8280c8ec-cbb9-4385-98b0-96cbebcded1d\"," +
"\"toppleFall\":\"0\"," +
"\"waterPenetration\":\"5\"," +
"\"EventTime\":\"2019-07-23 21:15:55\"" +
"}";
//JSONObject jsonObject6 = JSONObject.parseObject(msg6);
redisTemplate.convertAndSend(Warn, msg6);
}
}
调用sendMessage方法，发送数据，测试成功，至此，使用websocket+redis实现主动的数据推送完成。码字不易，不喜勿喷，手动滑稽脸
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