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package com.fuyuanshen.demo.service;
import jakarta.servlet.http.HttpServletResponse;
/**
* 导出下拉框Excel示例
*
* @author Emil.Zhang
*/
public interface IExportExcelService {
/**
* 导出下拉框
*
* @param response /
*/
void exportWithOptions(HttpServletResponse response);
}

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package com.fuyuanshen.demo.service;
import com.fuyuanshen.common.mybatis.core.page.PageQuery;
import com.fuyuanshen.common.mybatis.core.page.TableDataInfo;
import com.fuyuanshen.demo.domain.TestDemo;
import com.fuyuanshen.demo.domain.bo.TestDemoBo;
import com.fuyuanshen.demo.domain.vo.TestDemoVo;
import java.util.Collection;
import java.util.List;
/**
* 测试单表Service接口
*
* @author Lion Li
* @date 2021-07-26
*/
public interface ITestDemoService {
/**
* 查询单个
*
* @return
*/
TestDemoVo queryById(Long id);
/**
* 查询列表
*/
TableDataInfo<TestDemoVo> queryPageList(TestDemoBo bo, PageQuery pageQuery);
/**
* 自定义分页查询
*/
TableDataInfo<TestDemoVo> customPageList(TestDemoBo bo, PageQuery pageQuery);
/**
* 查询列表
*/
List<TestDemoVo> queryList(TestDemoBo bo);
/**
* 根据新增业务对象插入测试单表
*
* @param bo 测试单表新增业务对象
* @return
*/
Boolean insertByBo(TestDemoBo bo);
/**
* 根据编辑业务对象修改测试单表
*
* @param bo 测试单表编辑业务对象
* @return
*/
Boolean updateByBo(TestDemoBo bo);
/**
* 校验并删除数据
*
* @param ids 主键集合
* @param isValid 是否校验,true-删除前校验,false-不校验
* @return
*/
Boolean deleteWithValidByIds(Collection<Long> ids, Boolean isValid);
/**
* 批量保存
*/
Boolean saveBatch(List<TestDemo> list);
}

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package com.fuyuanshen.demo.service;
import com.fuyuanshen.demo.domain.bo.TestTreeBo;
import com.fuyuanshen.demo.domain.vo.TestTreeVo;
import java.util.Collection;
import java.util.List;
/**
* 测试树表Service接口
*
* @author Lion Li
* @date 2021-07-26
*/
public interface ITestTreeService {
/**
* 查询单个
*
* @return
*/
TestTreeVo queryById(Long id);
/**
* 查询列表
*/
List<TestTreeVo> queryList(TestTreeBo bo);
/**
* 根据新增业务对象插入测试树表
*
* @param bo 测试树表新增业务对象
* @return
*/
Boolean insertByBo(TestTreeBo bo);
/**
* 根据编辑业务对象修改测试树表
*
* @param bo 测试树表编辑业务对象
* @return
*/
Boolean updateByBo(TestTreeBo bo);
/**
* 校验并删除数据
*
* @param ids 主键集合
* @param isValid 是否校验,true-删除前校验,false-不校验
* @return
*/
Boolean deleteWithValidByIds(Collection<Long> ids, Boolean isValid);
}

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package com.fuyuanshen.demo.service.impl;
import cn.hutool.core.util.RandomUtil;
import cn.hutool.core.util.StrUtil;
import jakarta.servlet.http.HttpServletResponse;
import lombok.Data;
import lombok.RequiredArgsConstructor;
import com.fuyuanshen.common.core.constant.SystemConstants;
import com.fuyuanshen.common.core.utils.StreamUtils;
import com.fuyuanshen.common.excel.core.DropDownOptions;
import com.fuyuanshen.common.excel.utils.ExcelUtil;
import com.fuyuanshen.demo.domain.vo.ExportDemoVo;
import com.fuyuanshen.demo.service.IExportExcelService;
import org.springframework.stereotype.Service;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
/**
* 导出下拉框Excel示例
*
* @author Emil.Zhang
*/
@Service
@RequiredArgsConstructor
public class ExportExcelServiceImpl implements IExportExcelService {
@Override
public void exportWithOptions(HttpServletResponse response) {
// 创建表格数据,业务中一般通过数据库查询
List<ExportDemoVo> excelDataList = new ArrayList<>();
for (int i = 0; i < 3; i++) {
// 模拟数据库中的一条数据
ExportDemoVo everyRowData = new ExportDemoVo();
everyRowData.setNickName("用户-" + i);
everyRowData.setUserStatus(SystemConstants.NORMAL);
everyRowData.setGender("1");
everyRowData.setPhoneNumber(String.format("175%08d", i));
everyRowData.setEmail(String.format("175%08d", i) + "@163.com");
everyRowData.setProvinceId(i);
everyRowData.setCityId(i);
everyRowData.setAreaId(i);
excelDataList.add(everyRowData);
}
// 通过@ExcelIgnoreUnannotated配合@ExcelProperty合理显示需要的列
// 并通过@DropDown注解指定下拉值或者通过创建ExcelOptions来指定下拉框
// 使用ExcelOptions时建议指定列index防止出现下拉列解析不对齐
// 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(),
cityList = getCityList(provinceList),
areaList = getAreaList(cityList);
int provinceIndex = 5, cityIndex = 6, areaIndex = 7;
DropDownOptions provinceToCity = DropDownOptions.buildLinkedOptions(
provinceList,
provinceIndex,
cityList,
cityIndex,
DemoCityData::getId,
DemoCityData::getPid,
everyOptions -> DropDownOptions.createOptionValue(
everyOptions.getName(),
everyOptions.getId()
)
);
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<>();
options.add(provinceToCity);
options.add(cityToArea);
// 到此为止所有的下拉框可选项已全部配置完毕
// 接下来需要将Excel中的展示数据转换为对应的下拉选
List<ExportDemoVo> outList = StreamUtils.toList(excelDataList, everyRowData -> {
// 只需要处理没有使用@ExcelDictFormat注解的下拉框
// 一般来说,可以直接在数据库查询即查询出省市县信息,这里通过模拟操作赋值
everyRowData.setProvince(buildOptions(provinceList, everyRowData.getProvinceId()));
everyRowData.setCity(buildOptions(cityList, everyRowData.getCityId()));
everyRowData.setArea(buildOptions(areaList, everyRowData.getAreaId()));
return everyRowData;
});
ExcelUtil.exportExcel(outList, "下拉框示例", ExportDemoVo.class, response, options);
}
private String buildOptions(List<DemoCityData> cityDataList, Integer id) {
Map<Integer, List<DemoCityData>> groupByIdMap =
cityDataList.stream().collect(Collectors.groupingBy(DemoCityData::getId));
if (groupByIdMap.containsKey(id)) {
DemoCityData demoCityData = groupByIdMap.get(id).get(0);
return DropDownOptions.createOptionValue(demoCityData.getName(), demoCityData.getId());
} else {
return StrUtil.EMPTY;
}
}
/**
* 模拟查询数据库操作
*
* @return /
*/
private List<DemoCityData> getProvinceList() {
List<DemoCityData> provinceList = new ArrayList<>();
// 实际业务中一般采用数据库读取的形式,这里直接拼接创建
provinceList.add(new DemoCityData(0, null, "P100000"));
provinceList.add(new DemoCityData(1, null, "P200000"));
provinceList.add(new DemoCityData(2, null, "P300000"));
return provinceList;
}
/**
* 模拟查找数据库操作,需要连带查询出省的数据
*
* @param provinceList 模拟的父省数据
* @return /
*/
private List<DemoCityData> getCityList(List<DemoCityData> provinceList) {
List<DemoCityData> cityList = new ArrayList<>();
// 实际业务中一般采用数据库读取的形式,这里直接拼接创建
cityList.add(new DemoCityData(0, 0, "C110000"));
cityList.add(new DemoCityData(1, 0, "C120000"));
cityList.add(new DemoCityData(2, 1, "C210000"));
cityList.add(new DemoCityData(3, 1, "C220000"));
cityList.add(new DemoCityData(4, 1, "C230000"));
selectParentData(provinceList, cityList);
return cityList;
}
/**
* 模拟查找数据库操作,需要连带查询出市的数据
*
* @param cityList 模拟的父市数据
* @return /
*/
private List<DemoCityData> getAreaList(List<DemoCityData> cityList) {
List<DemoCityData> areaList = new ArrayList<>();
int minCount = 500;
int maxCount = 10000;
// 实际业务中一般采用数据库读取的形式,这里直接拼接创建
for (int i = 0; i < RandomUtil.randomInt(minCount, maxCount); i++) {
areaList.add(new DemoCityData(areaList.size(), 0, String.format("A11%04d", i)));
}
for (int i = 0; i < RandomUtil.randomInt(minCount, maxCount); i++) {
areaList.add(new DemoCityData(areaList.size(), 1, String.format("A12%04d", i)));
}
for (int i = 0; i < RandomUtil.randomInt(minCount, maxCount); i++) {
areaList.add(new DemoCityData(areaList.size(), 2, String.format("A21%04d", i)));
}
for (int i = 0; i < RandomUtil.randomInt(minCount, maxCount); i++) {
areaList.add(new DemoCityData(areaList.size(), 3, String.format("A22%04d", i)));
}
for (int i = 0; i < RandomUtil.randomInt(minCount, maxCount); i++) {
areaList.add(new DemoCityData(areaList.size(), 4, String.format("A23%04d", i)));
}
selectParentData(cityList, areaList);
return areaList;
}
/**
* 模拟数据库的查询父数据操作
*
* @param parentList /
* @param sonList /
*/
private void selectParentData(List<DemoCityData> parentList, List<DemoCityData> sonList) {
Map<Integer, List<DemoCityData>> parentGroupByIdMap =
parentList.stream().collect(Collectors.groupingBy(DemoCityData::getId));
sonList.forEach(everySon -> {
if (parentGroupByIdMap.containsKey(everySon.getPid())) {
everySon.setPData(parentGroupByIdMap.get(everySon.getPid()).get(0));
}
});
}
/**
* 模拟的数据库省市县
*/
@Data
private static class DemoCityData {
/**
* 数据库id字段
*/
private Integer id;
/**
* 数据库pid字段
*/
private Integer pid;
/**
* 数据库name字段
*/
private String name;
/**
* MyBatisPlus连带查询父数据
*/
private DemoCityData pData;
public DemoCityData(Integer id, Integer pid, String name) {
this.id = id;
this.pid = pid;
this.name = name;
}
}
}

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package com.fuyuanshen.demo.service.impl;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import lombok.RequiredArgsConstructor;
import com.fuyuanshen.common.core.exception.ServiceException;
import com.fuyuanshen.common.core.utils.MapstructUtils;
import com.fuyuanshen.common.core.utils.StringUtils;
import com.fuyuanshen.common.mybatis.core.page.PageQuery;
import com.fuyuanshen.common.mybatis.core.page.TableDataInfo;
import com.fuyuanshen.demo.domain.TestDemo;
import com.fuyuanshen.demo.domain.bo.TestDemoBo;
import com.fuyuanshen.demo.domain.vo.TestDemoVo;
import com.fuyuanshen.demo.mapper.TestDemoMapper;
import com.fuyuanshen.demo.service.ITestDemoService;
import org.springframework.stereotype.Service;
import java.util.Collection;
import java.util.List;
import java.util.Map;
/**
* 测试单表Service业务层处理
*
* @author Lion Li
* @date 2021-07-26
*/
@RequiredArgsConstructor
@Service
public class TestDemoServiceImpl implements ITestDemoService {
private final TestDemoMapper baseMapper;
@Override
public TestDemoVo queryById(Long id) {
return baseMapper.selectVoById(id);
}
@Override
public TableDataInfo<TestDemoVo> queryPageList(TestDemoBo bo, PageQuery pageQuery) {
LambdaQueryWrapper<TestDemo> lqw = buildQueryWrapper(bo);
Page<TestDemoVo> result = baseMapper.selectVoPage(pageQuery.build(), lqw);
return TableDataInfo.build(result);
}
/**
* 自定义分页查询
*/
@Override
public TableDataInfo<TestDemoVo> customPageList(TestDemoBo bo, PageQuery pageQuery) {
LambdaQueryWrapper<TestDemo> lqw = buildQueryWrapper(bo);
Page<TestDemoVo> result = baseMapper.customPageList(pageQuery.build(), lqw);
return TableDataInfo.build(result);
}
@Override
public List<TestDemoVo> queryList(TestDemoBo bo) {
return baseMapper.selectVoList(buildQueryWrapper(bo));
}
private LambdaQueryWrapper<TestDemo> buildQueryWrapper(TestDemoBo bo) {
Map<String, Object> params = bo.getParams();
LambdaQueryWrapper<TestDemo> lqw = Wrappers.lambdaQuery();
lqw.like(StringUtils.isNotBlank(bo.getTestKey()), TestDemo::getTestKey, bo.getTestKey());
lqw.eq(StringUtils.isNotBlank(bo.getValue()), TestDemo::getValue, bo.getValue());
lqw.between(params.get("beginCreateTime") != null && params.get("endCreateTime") != null,
TestDemo::getCreateTime, params.get("beginCreateTime"), params.get("endCreateTime"));
lqw.orderByAsc(TestDemo::getId);
return lqw;
}
@Override
public Boolean insertByBo(TestDemoBo bo) {
TestDemo add = MapstructUtils.convert(bo, TestDemo.class);
validEntityBeforeSave(add);
boolean flag = baseMapper.insert(add) > 0;
if (flag) {
bo.setId(add.getId());
}
return flag;
}
@Override
public Boolean updateByBo(TestDemoBo bo) {
TestDemo update = MapstructUtils.convert(bo, TestDemo.class);
validEntityBeforeSave(update);
return baseMapper.updateById(update) > 0;
}
/**
* 保存前的数据校验
*
* @param entity 实体类数据
*/
private void validEntityBeforeSave(TestDemo entity) {
//TODO 做一些数据校验,如唯一约束
}
@Override
public Boolean deleteWithValidByIds(Collection<Long> ids, Boolean isValid) {
if (isValid) {
// 做一些业务上的校验,判断是否需要校验
List<TestDemo> list = baseMapper.selectByIds(ids);
if (list.size() != ids.size()) {
throw new ServiceException("您没有删除权限!");
}
}
return baseMapper.deleteByIds(ids) > 0;
}
@Override
public Boolean saveBatch(List<TestDemo> list) {
return baseMapper.insertBatch(list);
}
}

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package com.fuyuanshen.demo.service.impl;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.fuyuanshen.common.core.utils.MapstructUtils;
import com.fuyuanshen.common.core.utils.StringUtils;
import com.fuyuanshen.demo.domain.TestTree;
import com.fuyuanshen.demo.domain.bo.TestTreeBo;
import com.fuyuanshen.demo.domain.vo.TestTreeVo;
import com.fuyuanshen.demo.mapper.TestTreeMapper;
import com.fuyuanshen.demo.service.ITestTreeService;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import java.util.Collection;
import java.util.List;
import java.util.Map;
/**
* 测试树表Service业务层处理
*
* @author Lion Li
* @date 2021-07-26
*/
// @DS("slave") // 切换从库查询
@RequiredArgsConstructor
@Service
public class TestTreeServiceImpl implements ITestTreeService {
private final TestTreeMapper baseMapper;
@Override
public TestTreeVo queryById(Long id) {
return baseMapper.selectVoById(id);
}
// @DS("slave") // 切换从库查询
@Override
public List<TestTreeVo> queryList(TestTreeBo bo) {
LambdaQueryWrapper<TestTree> lqw = buildQueryWrapper(bo);
return baseMapper.selectVoList(lqw);
}
private LambdaQueryWrapper<TestTree> buildQueryWrapper(TestTreeBo bo) {
Map<String, Object> params = bo.getParams();
LambdaQueryWrapper<TestTree> lqw = Wrappers.lambdaQuery();
lqw.like(StringUtils.isNotBlank(bo.getTreeName()), TestTree::getTreeName, bo.getTreeName());
lqw.between(params.get("beginCreateTime") != null && params.get("endCreateTime") != null,
TestTree::getCreateTime, params.get("beginCreateTime"), params.get("endCreateTime"));
lqw.orderByAsc(TestTree::getId);
return lqw;
}
@Override
public Boolean insertByBo(TestTreeBo bo) {
TestTree add = MapstructUtils.convert(bo, TestTree.class);
validEntityBeforeSave(add);
boolean flag = baseMapper.insert(add) > 0;
if (flag) {
bo.setId(add.getId());
}
return flag;
}
@Override
public Boolean updateByBo(TestTreeBo bo) {
TestTree update = MapstructUtils.convert(bo, TestTree.class);
validEntityBeforeSave(update);
return baseMapper.updateById(update) > 0;
}
/**
* 保存前的数据校验
*
* @param entity 实体类数据
*/
private void validEntityBeforeSave(TestTree entity) {
//TODO 做一些数据校验,如唯一约束
}
@Override
public Boolean deleteWithValidByIds(Collection<Long> ids, Boolean isValid) {
if (isValid) {
//TODO 做一些业务上的校验,判断是否需要校验
}
return baseMapper.deleteByIds(ids) > 0;
}
}

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package com.fuyuanshen.demo.service.impl;

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package com.fuyuanshen.demo.service;