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feat(增加自动创建级联选项功能):

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1.DropDownOptions中增加自动创建级联选项的方法
2.示例方法中增加调用示例
This commit is contained in:
Emil.Zhang
2023-06-09 18:31:59 +08:00
parent d785a01973
commit 0ff533e6b5
2 changed files with 86 additions and 48 deletions
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76
ruoyi-demo/src/main/java/com/ruoyi/demo/service/impl/ExportExcelServiceImpl.java
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@ -51,56 +51,36 @@ public class ExportExcelServiceImpl implements IExportExcelService {
// 首先从数据库中查询下拉框内的可选项
// 这里模拟查询结果
List<DemoCityData> provinceList = getProvinceList();
List<DemoCityData> cityList = getCityList(provinceList);
List<DemoCityData> areaList = getAreaList(cityList);
List<DemoCityData> provinceList = getProvinceList(),
cityList = getCityList(provinceList),
areaList = getAreaList(cityList);
int provinceIndex = 5, cityIndex = 6, areaIndex = 7;
// 把所有的结果提取为规范的下拉选可选项
// 规范的一级省，用于级联省-市
List<String> provinceOptions = StreamUtils.toList(provinceList, everyProvince ->
DropDownOptions.createOptionValue(everyProvince.getName(), everyProvince.getId()));
// 规范的二级市，用于级联省-市
Map<String, List<String>> provinceToCityOptions = new HashMap<>();
StreamUtils.groupByKey(cityList, DemoCityData::getPData)
.forEach((province, thisProvinceCityList) -> {
// 每个省下二级的市可选项
String optionValue = DropDownOptions.createOptionValue(province.getName(), province.getId());
List<String> list = StreamUtils.toList(thisProvinceCityList, everyCity ->
DropDownOptions.createOptionValue(everyCity.getName(), everyCity.getId()));
provinceToCityOptions.put(optionValue, list);
});
DropDownOptions provinceToCity = DropDownOptions.buildLinkedOptions(
provinceList,
provinceIndex,
cityList,
cityIndex,
DemoCityData::getId,
DemoCityData::getPid,
everyOptions -> DropDownOptions.createOptionValue(
everyOptions.getName(),
everyOptions.getId()
)
);
// 规范的一级市，用于级联市-县
List<String> cityOptions = StreamUtils.toList(cityList, everyCity ->
DropDownOptions.createOptionValue(everyCity.getName(), everyCity.getId()));
// 规范的二级县，用于级联市-县
Map<String, List<String>> cityToAreaOptions = new HashMap<>();
StreamUtils.groupByKey(areaList, DemoCityData::getPData)
.forEach((city, thisCityAreaList) -> {
// 每个市下二级的县可选项
String optionValue = DropDownOptions.createOptionValue(city.getName(), city.getId());
List<String> list = StreamUtils.toList(thisCityAreaList, everyCity ->
DropDownOptions.createOptionValue(everyCity.getName(), everyCity.getId()));
cityToAreaOptions.put(optionValue, list);
});
// 因为省市县三个都是联动，省级联市，市级联县，因此需要创建两个级联下拉，分别以省和市为判断依据创建
// 创建省-市级联
DropDownOptions provinceToCity = new DropDownOptions();
// 以省为一级
provinceToCity.setIndex(5);
// 以市为二级
provinceToCity.setNextIndex(6);
// 补充省的内容以及市的内容
provinceToCity.setOptions(provinceOptions);
provinceToCity.setNextOptions(provinceToCityOptions);
// 创建市-县级联
DropDownOptions cityToArea = new DropDownOptions();
cityToArea.setIndex(6);
cityToArea.setNextIndex(7);
cityToArea.setOptions(cityOptions);
cityToArea.setNextOptions(cityToAreaOptions);
DropDownOptions cityToArea = DropDownOptions.buildLinkedOptions(
cityList,
cityIndex,
areaList,
areaIndex,
DemoCityData::getId,
DemoCityData::getPid,
everyOptions -> DropDownOptions.createOptionValue(
everyOptions.getName(),
everyOptions.getId()
)
);
// 把所有的下拉框存储
List<DropDownOptions> options = new ArrayList<>();