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/*
* Copyright (c) 2018-2025, lengleng All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* Neither the name of the yifu4cloud.com developer nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
* Author: lengleng (wangiegie@gmail.com)
*/
package ${package}.${moduleName}.service.impl;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import ${package}.${moduleName}.entity.${className};
import ${package}.${moduleName}.vo.${className}Vo;
import ${package}.${moduleName}.mapper.${className}Mapper;
import ${package}.${moduleName}.service.${className}Service;
import lombok.extern.log4j.Log4j2;
import org.springframework.stereotype.Service;
import com.yifu.cloud.plus.v1.yifu.common.core.util.ErrorMessage;
import com.yifu.cloud.plus.v1.yifu.common.core.util.R;
import ${package}.${moduleName}.vo.${className}SearchVo;
import javax.servlet.http.HttpServletResponse;
import java.io.InputStream;
import java.util.List;
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.ArrayUtil;
import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.ExcelWriter;
import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.read.listener.ReadListener;
import com.alibaba.excel.read.metadata.holder.ReadRowHolder;
import com.alibaba.excel.util.ListUtils;
import com.alibaba.excel.write.metadata.WriteSheet;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.yifu.cloud.plus.v1.yifu.common.core.constant.CommonConstants;
import com.yifu.cloud.plus.v1.yifu.common.core.util.*;
import com.yifu.cloud.plus.v1.yifu.common.mybatis.base.BaseEntity;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;
/**
* ${comments}
*
* @author ${author}
* @date ${datetime}
*/
@Log4j2
@Service
public class ${className}ServiceImpl extends ServiceImpl<${className}Mapper, ${className}> implements ${className}Service {
/**
* ${comments}简单分页查询
* @param ${classname} ${comments}
* @return
*/
@Override
public IPage<${className}> get${className}Page(Page<${className}> page, ${className}SearchVo ${classname}){
return baseMapper.get${className}Page(page,${classname});
}
/**
* ${comments}批量导出
* @param ${classname} ${comments}
* @return
*/
@Override
public void listExport(HttpServletResponse response, ${className}SearchVo searchVo){
String fileName = "${comments}批量导出" + DateUtil.getThisTime() + ".xlsx";
//获取要导出的列表
List<${className}> list = new ArrayList<>();
long count = noPageCountDiy(searchVo);
ServletOutputStream out = null;
try {
out = response.getOutputStream();
response.setContentType(CommonConstants.MULTIPART_FORM_DATA);
response.setCharacterEncoding("utf-8");
response.setHeader(CommonConstants.CONTENT_DISPOSITION, CommonConstants.ATTACHMENT_FILENAME + URLEncoder.encode(fileName , CommonConstants.UTF8));
// 这里 需要指定写用哪个class去写,然后写到第一个sheet,然后文件流会自动关闭
//EasyExcel.write(out, TEmpBadRecord.class).sheet("不良记录").doWrite(list);
ExcelWriter excelWriter = EasyExcel.write(out, ${className}.class).build();
int index = 0;
if (count > CommonConstants.ZERO_INT){
for (int i = 0; i <= count; ) {
// 获取实际记录
searchVo.setLimitStart(i);
searchVo.setLimitEnd(CommonConstants.EXCEL_EXPORT_LIMIT);
list = noPageDiy(searchVo);
if (Common.isNotNull(list)){
ExcelUtil<${className}> util = new ExcelUtil<>(${className}.class);
for (${className} vo:list){
util.convertEntity(vo,null,null,null);
}
}
if (Common.isNotNull(list)){
WriteSheet writeSheet = EasyExcel.writerSheet("${comments}"+index).build();
excelWriter.write(list,writeSheet);
index++;
}
i = i + CommonConstants.EXCEL_EXPORT_LIMIT;
if (Common.isNotNull(list)){
list.clear();
}
}
}else {
WriteSheet writeSheet = EasyExcel.writerSheet("${comments}"+index).build();
excelWriter.write(list,writeSheet);
}
if (Common.isNotNull(list)){
list.clear();
}
out.flush();
excelWriter.finish();
}catch (Exception e){
log.error("执行异常" ,e);
}finally {
try {
if (null != out) {
out.close();
}
} catch (IOException e) {
log.error("执行异常", e);
}
}
}
@Override
public List<${className}> noPageDiy(${className}SearchVo searchVo) {
LambdaQueryWrapper<${className}> wrapper = buildQueryWrapper(searchVo);
List<String> idList = Common.getList(searchVo.getIds());
if (Common.isNotNull(idList)){
wrapper.in(${className}::getId,idList);
}
if (searchVo.getLimitStart() >= 0 && searchVo.getLimitEnd() > 0){
wrapper.last(" limit "+ searchVo.getLimitStart() +","+ searchVo.getLimitEnd());
}
wrapper.orderByDesc(BaseEntity::getCreateTime);
return baseMapper.selectList(wrapper);
}
private Long noPageCountDiy(${className}SearchVo searchVo) {
LambdaQueryWrapper<${className}> wrapper = buildQueryWrapper(searchVo);
List<String> idList = Common.getList(searchVo.getIds());
if (Common.isNotNull(idList)){
wrapper.in(${className}::getId,idList);
}
return baseMapper.selectCount(wrapper);
}
private LambdaQueryWrapper buildQueryWrapper(${className}SearchVo entity){
LambdaQueryWrapper<${className}> wrapper = Wrappers.lambdaQuery();
if (ArrayUtil.isNotEmpty(entity.getCreateTimes())) {
wrapper.ge(${className}::getCreateTime, entity.getCreateTimes()[0])
.le(${className}::getCreateTime,
entity.getCreateTimes()[1]);
}
if (Common.isNotNull(entity.getCreateName())){
wrapper.eq(${className}::getCreateName,entity.getCreateName());
}
return wrapper;
}
@Override
public R<List<ErrorMessage>> importDiy(InputStream inputStream) {
List<ErrorMessage> errorMessageList = new ArrayList<>();
ExcelUtil<${className}Vo> util1 = new ExcelUtil<>(${className}Vo.class);;
// 写法2:
// 匿名内部类 不用额外写一个DemoDataListener
// 这里 需要指定读用哪个class去读,然后读取第一个sheet 文件流会自动关闭
try {
EasyExcel.read(inputStream, ${className}Vo.class, new ReadListener<${className}Vo>() {
/**
* 单次缓存的数据量
*/
public static final int BATCH_COUNT = CommonConstants.BATCH_COUNT;
/**
*临时存储
*/
private List<${className}Vo> cachedDataList = ListUtils.newArrayListWithExpectedSize(BATCH_COUNT);
@Override
public void invoke(${className}Vo data, AnalysisContext context) {
ReadRowHolder readRowHolder = context.readRowHolder();
Integer rowIndex = readRowHolder.getRowIndex();
data.setRowIndex(rowIndex+1);
ErrorMessage errorMessage = util1.checkEntity(data, data.getRowIndex());
if (Common.isNotNull(errorMessage)){
errorMessageList.add(errorMessage);
}else {
cachedDataList.add(data);
}
if (cachedDataList.size() >= BATCH_COUNT) {
saveData();
// 存储完成清理 list
cachedDataList = ListUtils.newArrayListWithExpectedSize(BATCH_COUNT);
}
}
@Override
public void doAfterAllAnalysed(AnalysisContext context) {
saveData();
}
/**
* 加上存储数据库
*/
private void saveData() {
log.info("{}条数据,开始存储数据库!", cachedDataList.size());
import${className}(cachedDataList,errorMessageList);
log.info("存储数据库成功!");
}
}).sheet().doRead();
}catch (Exception e){
log.error(CommonConstants.IMPORT_DATA_ANALYSIS_ERROR,e);
return R.failed(CommonConstants.IMPORT_DATA_ANALYSIS_ERROR);
}
return R.ok(errorMessageList);
}
private void import${className}(List<${className}Vo> excelVOList, List<ErrorMessage> errorMessageList) {
// 个性化校验逻辑
ErrorMessage errorMsg;
// 执行数据插入操作 组装
for (int i = 0; i < excelVOList.size(); i++) {
${className}Vo excel = excelVOList.get(i);
// 数据合法情况 TODO
// 插入
insertExcel(excel);
errorMessageList.add(new ErrorMessage(excel.getRowIndex(),CommonConstants.SAVE_SUCCESS));
}
}
/**
* 插入excel bad record
*/
private void insertExcel(${className}Vo excel) {
${className} insert = new ${className}();
BeanUtil.copyProperties(excel, insert);
this.save(insert);
}
}