package com.fsinfo.common.utils;
import com.fsinfo.modules.enterprise.entity.EnterpriseRecordEntity;
import org.apache.commons.io.FileUtils;
import org.apache.poi.hssf.usermodel.HSSFDataFormat;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.multipart.MultipartFile;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
/**
* @Author leijiaxuan
* @Email 897953910@qq.com
* @Date 9:50 2020/7/22
**/
public class ExcelInsert {
// private static Logger logger = Logger.getLogger(ExcelReader.class.getName()); // 日志打印类
private static final String XLS = "xls";
private static final String XLSX = "xlsx";
/**
* 根据文件后缀名类型获取对应的工作簿对象
* @param inputStream 读取文件的输入流
* @param fileType 文件后缀名类型（xls或xlsx）
* @return 包含文件数据的工作簿对象
* @throws IOException
*/
public static Workbook getWorkbook(InputStream inputStream, String fileType) throws IOException {
Workbook workbook = null;
if (fileType.equalsIgnoreCase(XLS)) {
workbook = new HSSFWorkbook(inputStream);
} else if (fileType.equalsIgnoreCase(XLSX)) {
workbook = new XSSFWorkbook(inputStream);
}
return workbook;
}
/**
* 读取Excel文件内容
* @param myfile 要读取的Excel文件流
* @return 读取结果列表，读取失败时返回null
*/
public static List<EnterpriseRecordEntity> readExcel(MultipartFile myfile) {
Workbook workbook = null;
FileInputStream inputStream = null;
try {
// 获取Excel后缀名
String fileName=myfile.getOriginalFilename();
String fileType = fileName.substring(fileName.lastIndexOf(".") + 1, fileName.length());
// // 获取Excel文件
// File excelFile = new File(fileName);
// if (!excelFile.exists()) {
//// logger.warning("指定的Excel文件不存在！");
// return null;
// }
File file = new File(myfile.getOriginalFilename());
FileUtils.copyInputStreamToFile(myfile.getInputStream(), file);
// 获取Excel工作簿
inputStream = new FileInputStream(file);
workbook = getWorkbook(inputStream, fileType);
// 会在本地产生临时文件，用完后需要删除
if (file.exists()) {
file.delete();
}
// 读取excel中的数据
List<EnterpriseRecordEntity> resultDataList = parseExcel(workbook);
return resultDataList;
} catch (Exception e) {
// logger.warning("解析Excel失败，文件名：" + fileName + " 错误信息：" + e.getMessage());
return null;
} finally {
try {
if (null != workbook) {
workbook.close();
}
if (null != inputStream) {
inputStream.close();
}
} catch (Exception e) {
// logger.warning("关闭数据流出错！错误信息：" + e.getMessage());
return null;
}
}
}
/**
* 解析Excel数据
* @param workbook Excel工作簿对象
* @return 解析结果
*/
private static List<EnterpriseRecordEntity> parseExcel(Workbook workbook) {
List<EnterpriseRecordEntity> resultDataList = new ArrayList<>();
// 解析sheet
for (int sheetNum = 0; sheetNum < workbook.getNumberOfSheets(); sheetNum++) {
Sheet sheet = workbook.getSheetAt(sheetNum);
// 校验sheet是否合法
if (sheet == null) {
continue;
}
// 获取第一行数据
int firstRowNum = sheet.getFirstRowNum();
Row firstRow = sheet.getRow(firstRowNum);
if (null == firstRow) {
// logger.warning("解析Excel失败，在第一行没有读取到任何数据！");
}
// 解析每一行的数据，构造数据对象
int rowStart = firstRowNum + 1;
int rowEnd = sheet.getPhysicalNumberOfRows();
for (int rowNum = rowStart; rowNum < rowEnd; rowNum++) {
Row row = sheet.getRow(rowNum);
if (null == row) {
continue;
}
EnterpriseRecordEntity resultData = convertRowToData(row);
if (null == resultData) {
// logger.warning("第 " + row.getRowNum() + "行数据不合法，已忽略！");
continue;
}
resultDataList.add(resultData);
}
}
return resultDataList;
}
/**
* 将单元格内容转换为字符串
* @param cell
* @return
*/
private static String convertCellValueToString(Cell cell) {
if(cell==null){
return null;
}
String returnValue = null;
switch (cell.getCellType()) {
case 0: //数字
if (HSSFDateUtil.isCellDateFormatted(cell)) {// 处理日期格式、时间格式
SimpleDateFormat sdf = null;
if (cell.getCellStyle().getDataFormat() == HSSFDataFormat
.getBuiltinFormat("h:mm")) {
sdf = new SimpleDateFormat("HH:mm");
} else {// 日期
sdf = new SimpleDateFormat("yyyy-MM-dd");
}
Date date = cell.getDateCellValue();
returnValue = sdf.format(date);
} else if (cell.getCellStyle().getDataFormat() == 58) {
// 处理自定义日期格式：m月d日(通过判断单元格的格式id解决，id的值是58)
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
double value = cell.getNumericCellValue();
Date date = org.apache.poi.ss.usermodel.DateUtil
.getJavaDate(value);
returnValue = sdf.format(date);
} else {
double value = cell.getNumericCellValue();
CellStyle style = cell.getCellStyle();
DecimalFormat format = new DecimalFormat();
String temp = style.getDataFormatString();
// 单元格设置成常规
if (temp.equals("General")) {
format.applyPattern("#");
}
returnValue = format.format(value);
}
break;
case 1: //字符串
returnValue = cell.getStringCellValue();
break;
case 4: //布尔
Boolean booleanValue = cell.getBooleanCellValue();
returnValue = booleanValue.toString();
break;
case 2: // 空值
break;
case 7: // 公式
returnValue = cell.getCellFormula();
break;
case 64: // 故障
break;
default:
break;
}
return returnValue;
}
/**
* 提取每一行中需要的数据，构造成为一个结果数据对象
*
* 当该行中有单元格的数据为空或不合法时，忽略该行的数据
*
* @param row 行数据
* @return 解析后的行数据对象，行数据错误时返回null
*/
private static EnterpriseRecordEntity convertRowToData(Row row) {
EnterpriseRecordEntity resultData = new EnterpriseRecordEntity();
Cell cell;
int cellNum = 0;
// 获取记录日期
cell = row.getCell(cellNum++);
String recorddate = convertCellValueToString(cell);
resultData.setRecorddate(java.sql.Date.valueOf(recorddate));
// 获取企业名称
cell = row.getCell(cellNum++);
String enterpriseuuid = convertCellValueToString(cell);
resultData.setEnterpriseuuid(enterpriseuuid);
// 获取企业反映问题
cell = row.getCell(cellNum++);
String recordcontext = convertCellValueToString(cell);
resultData.setRecordcontext(recordcontext);
// 获取解决情况
cell = row.getCell(cellNum++);
String handlinfo = convertCellValueToString(cell);
resultData.setHandlinfo(handlinfo);
// 获取备注
cell = row.getCell(cellNum++);
String remarks = convertCellValueToString(cell);
resultData.setRemarks(remarks);
return resultData;
}
}
