package org.jeecg.common.system.base.controller;
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import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
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import com.baomidou.mybatisplus.extension.service.IService;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.commons.beanutils.PropertyUtils;
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import org.apache.shiro.SecurityUtils;
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import org.jeecg.common.api.vo.Result;
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import org.jeecg.common.system.query.QueryGenerator;
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import org.jeecg.common.system.vo.LoginUser;
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import org.jeecg.common.util.oConvertUtils;
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import org.jeecgframework.poi.excel.ExcelImportUtil;
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import org.jeecgframework.poi.excel.def.NormalExcelConstants;
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import org.jeecgframework.poi.excel.entity.ExportParams;
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import org.jeecgframework.poi.excel.entity.ImportParams;
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import org.jeecgframework.poi.excel.view.JeecgEntityExcelView;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.web.multipart.MultipartFile;
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import org.springframework.web.multipart.MultipartHttpServletRequest;
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import org.springframework.web.servlet.ModelAndView;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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import java.util.Arrays;
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import java.util.List;
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import java.util.Map;
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import java.util.stream.Collectors;
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/**
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* @Description: Controller基类
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* @Author: dangzhenghui@163.com
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* @Date: 2019-4-21 8:13
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* @Version: 1.0
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*/
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@Slf4j
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public class JeecgController<T, S extends IService<T>> {
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@Autowired
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S service;
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/**
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* 导出excel
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*
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* @param request
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*/
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protected ModelAndView exportXls(HttpServletRequest request, T object, Class<T> clazz, String title) {
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// Step.1 组装查询条件
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QueryWrapper<T> queryWrapper = QueryGenerator.initQueryWrapper(object, request.getParameterMap());
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LoginUser sysUser = (LoginUser) SecurityUtils.getSubject().getPrincipal();
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// Step.2 获取导出数据
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List<T> pageList = service.list(queryWrapper);
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List<T> exportList = null;
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// 过滤选中数据
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String selections = request.getParameter("selections");
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if (oConvertUtils.isNotEmpty(selections)) {
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List<String> selectionList = Arrays.asList(selections.split(","));
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exportList = pageList.stream().filter(item -> selectionList.contains(getId(item))).collect(Collectors.toList());
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} else {
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exportList = pageList;
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}
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// Step.3 AutoPoi 导出Excel
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ModelAndView mv = new ModelAndView(new JeecgEntityExcelView());
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mv.addObject(NormalExcelConstants.FILE_NAME, title); //此处设置的filename无效 ,前端会重更新设置一下
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mv.addObject(NormalExcelConstants.CLASS, clazz);
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mv.addObject(NormalExcelConstants.PARAMS, new ExportParams(title + "报表", "导出人:" + sysUser.getRealname(), title));
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mv.addObject(NormalExcelConstants.DATA_LIST, exportList);
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return mv;
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}
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/**
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* 获取对象ID
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*
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* @return
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*/
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private String getId(T item) {
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try {
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return PropertyUtils.getProperty(item, "id").toString();
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} catch (Exception e) {
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e.printStackTrace();
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return null;
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}
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}
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/**
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* 通过excel导入数据
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*
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* @param request
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* @param response
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* @return
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*/
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protected Result<?> importExcel(HttpServletRequest request, HttpServletResponse response, Class<T> clazz) {
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MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
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Map<String, MultipartFile> fileMap = multipartRequest.getFileMap();
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for (Map.Entry<String, MultipartFile> entity : fileMap.entrySet()) {
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MultipartFile file = entity.getValue();// 获取上传文件对象
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ImportParams params = new ImportParams();
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params.setTitleRows(2);
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params.setHeadRows(1);
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params.setNeedSave(true);
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try {
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List<T> list = ExcelImportUtil.importExcel(file.getInputStream(), clazz, params);
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//update-begin-author:taoyan date:20190528 for:批量插入数据
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long start = System.currentTimeMillis();
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service.saveBatch(list);
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//400条 saveBatch消耗时间1592毫秒 循环插入消耗时间1947毫秒
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//1200条 saveBatch消耗时间3687毫秒 循环插入消耗时间5212毫秒
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log.info("消耗时间" + (System.currentTimeMillis() - start) + "毫秒");
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//update-end-author:taoyan date:20190528 for:批量插入数据
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return Result.ok("文件导入成功！数据行数：" + list.size());
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} catch (Exception e) {
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log.error(e.getMessage(), e);
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return Result.error("文件导入失败:" + e.getMessage());
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} finally {
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try {
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file.getInputStream().close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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return Result.error("文件导入失败！");
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}
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}
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