用nexus搭建自己的maven私有仓库 刚安装nexus时,nexus启动失败,启动不到1分钟,自动停止.后来查找到了原因: Java 6 Support EOLOracle's support for Java 6 ended in February 2013. Consequentially as of version 2.6 Nexus now requires a Java 7 JRE to run. 意思就是从2.6.0开始不支持6了,jdk版本要求7以上. 一.用admin用户
最近连续俩次遇到运算后数值精度丢失问题,所以记录一下. 问题1:java计算百分比,应该得到57,可返回的就是56 在java代码中 BigDecimal progress; BigDecimal a = new BigDecimal(POF); BigDecimal b = new BigDecimal(RF); if(b.compareTo(a)==1&&b.subtract(a).longValue()<1000000){ return 100; } progress = a.
mysql数据库迁移到oracle数据库后 如何删除相同的数据 首先搞清楚有多少数据是重复的 select pid from product group by pid having count(pid) > 1 删除重复记录(id都是重复的) delete from productwhere pid not in (select min(pid) from product group by pid having count(pid)>1)