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知识点整理: spring相关的知识点: aop:https://www.cnblogs.com/zhangzongle/p/5944906.html 牛人的博客: 田小波 http://www.tianxiaobo.com/ 活在梦里 https://www.cnblogs.com/micrari redis的并发处理 while(jedis.setnx(lock, now+超时时间)==0){ if(now>jedis.get(lock) && now>jedis.getset(lock, now+超时时间)){ break; }else{ Thread.sleep(300); } } 执行业务代码; jedis.del(lock); --打印java默认参数 -XX:+PrintFlagsFinal --java 启动进程信息 jps -l --运行时的参数 jinfo -flags pid --分组 knowledgeV2MappingVoList.stream().collect(Collectors.groupingBy(KnowledgeV2MappingVo::getKid,Collectors.mapping(KnowledgeV2MappingVo::getCode,Collectors.toSet())));
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