websocket 调用redis进行存储数据，实现分发信息

环境：spring boot 2.x

spring默认是单例模式，websocket是多对象模式，直接注入会冲突，空指针异常

首先我们写一个上下文管理

package cn.onefox.util;import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.stereotype.Repository;@Repository
public class SpringUtils implements BeanFactoryPostProcessor {//Spring应用上下文环境private static ConfigurableListableBeanFactory beanFactory;@Overridepublic void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {SpringUtils.beanFactory = beanFactory;}public static ConfigurableListableBeanFactory getBeanFactory() {return beanFactory;}@SuppressWarnings("unchecked")public static <T> T getBean(String name) throws BeansException {return (T) getBeanFactory().getBean(name);}public static <T> T getBean(Class<T> clz) throws BeansException {T result = (T) getBeanFactory().getBean(clz);return result;}
}

接下来在websocket中获取实例即可使用了

package cn.onefox.webScoket.config;import cn.onefox.core.sensor.pageModel.MsensorAlarm;
import cn.onefox.core.webSocket.pageModel.Message;
import cn.onefox.core.webSocket.pageModel.MsensorAlarmSocket;
import cn.onefox.core.webSocket.pageModel.MwebSocketCode;
import cn.onefox.util.SpringUtils;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeanUtils;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;import javax.websocket.*;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArraySet;/*** @author zgc*/
@ServerEndpoint("/webScoket")
@Component
public class WebScoket {private final Logger logger = LoggerFactory.getLogger(this.getClass());// 日志打印private RedisTemplate redisTemplate = SpringUtils.getBean(RedisTemplate.class);//获取redis实例/*** 开启时根据客户端名称将数据保存redis** @throws IOException*/@OnOpenpublic void onOpen(Session session) throws IOException {redisTemplate.opsForHash().put("测试添加","口罩","10");}/*** 客户端调用关闭方法时 在服务端删除该客户端*/@OnClosepublic void onClose() {}/*** 调用发送消息方法时 执行发送操作** @param message* @param session*/@OnMessagepublic void onMessage(String message, Session session) throws IOException {}/*** 发生错误时** @param session* @param error*/@OnErrorpublic void onError(Session session, Throwable error) {}
}

这样就可以在websocket中使用redis存储信息了，有问题欢迎指出来。