java学习者

// 查询出没有的需要插入的// 1:将查询出的list转为mapMap<Long, ImCategoryBean> imCategoryMap = imCategoryBeanList.stream().collect(Collectors.toMap(ImCategoryBean::getfCategoryId, imCategoryBean -> imCategory...

首先复制来下面的xml文件：<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"><...

在项目中打包，遇到报错信息java.io.IOException: invalid constant type: 18是缺少javassist的包，在pom.xml中引入<dependency> <groupId>org.javassist</groupId> <artifactId>javassist</artifact...

//1 查出来当前在线的人员Set<String> keySet = redisCacheUtil.getCacheObjectAll(ImEnum.REDIS_ONLINE.getName() + "*");ArrayList<ImLoginStatusBean> onlineUsers = new ArrayList();keySet.stream().forE...