/**
* 获取所有行政区划代码的最高级 用于sql的like查询
* @param regionCodeLevels
* @return
*/
public static List<String> getAllFirstRegionCode(String regionCodeLevels){
List<String> regionCodeList = new ArrayList<>();
LinkedHashSet<String> regionCodeLinkList = new LinkedHashSet<>();//自动去重
if(StringUtils.isNotEmpty(regionCodeLevels)){
String[] regionLevelArrays = regionCodeLevels.split(",");
for (String regionLevels:regionLevelArrays) {
String[] regionLevelArray = regionLevels.split("_");
String reginCode = regionLevelArray[0];
String regionLevel = regionLevelArray[1];
switch (regionLevel){
case "1":{
regionCodeLinkList.add(reginCode.substring(0,2));//35%
break;
}
case "2":{
String proveCode = reginCode.substring(0,2);
List<String> proveList = regionCodeLinkList.stream().filter(d->d.equals(proveCode)).collect(Collectors.toList());
if(proveList != null && proveList.size()>0){ //如果已经存在上一级则跳过添加
continue;
}else {
regionCodeLinkList.add(reginCode.substring(0,4));//3501%
}
break;
}
case "3":{
String proveCode = reginCode.substring(0,2);
List<String> proveList = regionCodeLinkList.stream().filter(d->d.equals(proveCode)).collect(Collectors.toList());
String cityCode = reginCode.substring(0,4);
List<String> cityList = regionCodeLinkList.stream().filter(d->d.equals(cityCode)).collect(Collectors.toList());
if((cityList != null && cityList.size()>0) || (proveList != null && proveList.size()>0)){ //如果已经存在上一级、上上级则跳过添加
continue;
}else {
regionCodeLinkList.add(reginCode);
}
break;
}
default:break;
}
}
for (String str:regionCodeLinkList) {
regionCodeList.add(str);
}
}
return regionCodeList;
}
标签：String,regionCodeLinkList,最高级,substring,reginCode,sql,proveList,List,like From： https://www.cnblogs.com/ht-privete-logs/p/17174310.html