List传值覆盖问题

最新推荐文章于 2024-04-03 20:09:26 发布

原创最新推荐文章于 2024-04-03 20:09:26 发布 · 796 阅读

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博客探讨了在使用Eclipse进行开发时，如何避免在多重循环中因不当add操作导致的List值覆盖问题，强调最后一重循环进行add操作的重要性。

for(int i= 0;i<date.size()-1;i++) {

    for (int j = 0; j < ruleGroupList.size(); j++) {
        RuleThroughputRate throughputRate = new RuleThroughputRate();
        throughputRate.setProductId(criteria.getProductId());
        //时间条件插入
        throughputRate.setStartDate(date.get(i));
        throughputRate.setEndDate(date.get(i + 1));
        //折线图Y轴
        List <String> rateList = new ArrayList();
        //规则名条件插入
        String ruleName = ruleGroupList.get(j);
        throughputRate.setRuleName(ruleName);
        //根据规则集名称计算通过率并插入
        if(ValidatorUtils.isEmpty(ruleName)){
            continue;
        }
        List<String> list = riskRuleLogService.findIdRuleGroupByStatus(throughputRate);
        int throughput =list.size();
        int sum = riskRuleLogService.findIdRuleByGroup(throughputRate).size();
        int rate = 0;
        if (sum != 0) {
            rate = throughput * 100 / sum;
            rateList.add(String.valueOf(rate));

        } else {
            //通过X轴取通过率，如果为空填NULL
            rateList.add("null");
        }

        throughputRate.setThroughRateList(rateList);
        throughputRateList.add(throughputRate);
    }
}