使用场景:
开发中遇到一个需要对导入的Excel数据进行数据校验的需求,但是同一列的数据校验提示语可能就只是行数不同,其他都相同,由于我们的数据校验提示都是放到消息盒子里的,所以为了阅读方便,需要对同类型的校验信息合并同类项。
处理逻辑:
1.定义验证信息类
需要重写equals入hashcode方法,定义merge方法(合并的逻辑:我这里是将行数拼接)
import lombok.Data; @Data public class VerifyMessage { private String sheetName; private String columnName; private String rowNum; private Integer verifyType; @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((sheetName == null) ? 0 : sheetName.hashCode()); result = prime * result + ((columnName == null) ? 0 : columnName.hashCode()); result = prime * result + ((verifyType == null) ? 0 : verifyType.hashCode()); return result; } @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; VerifyMessage other = (VerifyMessage) obj; if (sheetName == null) { if (other.sheetName != null) return false; } else if (!sheetName.equals(other.sheetName)) return false; if (columnName == null) { if (other.columnName != null) return false; } else if (!columnName.equals(other.columnName)) return false; if (verifyType == null) { if (other.verifyType != null) return false; } else if (!verifyType.equals(other.verifyType)) return false; return true; } static VerifyMessage merge(VerifyMessage m1, VerifyMessage m2) { if (!m1.equals(m2)) { throw new IllegalArgumentException(); } return new VerifyMessage(m1.sheetName, m1.columnName, m1.rowNum + "," + m2.rowNum, m1.verifyType); } @Override public String toString() { return "VerifyMessage{" + "sheetName='" + sheetName + '\'' + ", columnName='" + columnName + '\'' + ", rowNum='" + rowNum + '\'' + ", verifyType=" + verifyType + '}'; } public VerifyMessage(String sheetName, String columnName, String rowNum, Integer verifyType) { this.sheetName = sheetName; this.columnName = columnName; this.rowNum = rowNum; this.verifyType = verifyType; } }
2.创建测试类
public static void main(String[] args) { List<VerifyMessage> verifyMessageList = new ArrayList<>(); verifyMessageList.add(new VerifyMessage("排班及目标导入","排班时长","1",SZGS.num)); verifyMessageList.add(new VerifyMessage("排班及目标导入","排班时长","3",SZGS.num)); verifyMessageList.add(new VerifyMessage("排班及目标导入","排班时长","7",SZGS.num)); verifyMessageList.add(new VerifyMessage("排班及目标导入","排班时长","9",SZGS.num)); verifyMessageList.add(new VerifyMessage("人员数据-HR","日期","5",RQGS.num)); verifyMessageList.add(new VerifyMessage("人员数据-HR","日期","14",RQGS.num)); verifyMessageList.add(new VerifyMessage("人员数据-HR","日期","19",RQGS.num)); Map<VerifyMessage, VerifyMessage> map = new HashMap<>(); for (VerifyMessage verifyMessage : verifyMessageList) { if (map.containsKey(verifyMessage)) { map.put(verifyMessage, VerifyMessage.merge(map.get(verifyMessage), verifyMessage)); } else { map.put(verifyMessage, verifyMessage); } } for (VerifyMessage verifyMessage :map.values()){ System.out.println(verifyMessage); } }输出:
VerifyMessage{sheetName='人员数据-HR', columnName='日期', rowNum='5,14,19', verifyType=1}
VerifyMessage{sheetName='排班及目标导入', columnName='排班时长', rowNum='1,3,7,9', verifyType=2}总结
可以根据自己的实际需求更改合并逻辑。