package com.dao.chu.excel;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
/**
*
* excel读取工具类
*
* @author daochuwenziyao
* @see [相关类/方法]
* @since [产品/模块版本]
*/
public class ImportExeclUtil
{
private static int totalRows = 0;
private static int totalCells = 0;
private static String errorInfo;
/** 无参构造方法 */
public ImportExeclUtil()
{
}
public static int getTotalRows()
{
return totalRows;
}
public static int getTotalCells()
{
return totalCells;
}
public static String getErrorInfo()
{
return errorInfo;
}
/**
*
* 根据流读取Excel文件
*
*
* @param inputStream
* @param isExcel2003
* @return
* @see [类、类#方法、类#成员]
*/
public List<List<String>> read(InputStream inputStream, boolean isExcel2003)
throws IOException
{
List<List<String>> dataLst = null;
/** 根据版本选择创建Workbook的方式 */
Workbook wb = null;
if (isExcel2003)
{
wb = new HSSFWorkbook(inputStream);
}
else
{
wb = new XSSFWorkbook(inputStream);
}
dataLst = readDate(wb);
return dataLst;
}
/**
*
* 读取数据
*
* @param wb
* @return
* @see [类、类#方法、类#成员]
*/
private List<List<String>> readDate(Workbook wb)
{
List<List<String>> dataLst = new ArrayList<List<String>>();
/** 得到第一个shell */
Sheet sheet = wb.getSheetAt(0);
/** 得到Excel的行数 */
totalRows = sheet.getPhysicalNumberOfRows();
/** 得到Excel的列数 */
if (totalRows >= 1 && sheet.getRow(0) != null)
{
totalCells = sheet.getRow(0).getPhysicalNumberOfCells();
}
/** 循环Excel的行 */
for (int r = 0; r < totalRows; r++)
{
Row row = sheet.getRow(r);
if (row == null)
{
continue;
}
List<String> rowLst = new ArrayList<String>();
/** 循环Excel的列 */
for (int c = 0; c < getTotalCells(); c++)
{
Cell cell = row.getCell(c);
String cellValue = "";
if (null != cell)
{
switch (cell.getCellType())
{
case HSSFCell.CELL_TYPE_NUMERIC:
cellValue = cell.getNumericCellValue() + "";
break;
case HSSFCell.CELL_TYPE_STRING:
cellValue = cell.getStringCellValue();
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
cellValue = cell.getBooleanCellValue() + "";
break;
case HSSFCell.CELL_TYPE_FORMULA:
cellValue = cell.getCellFormula() + "";
break;
case HSSFCell.CELL_TYPE_BLANK:
cellValue = "";
break;
case HSSFCell.CELL_TYPE_ERROR:
cellValue = "非法字符";
break;
default:
cellValue = "未知类型";
break;
}
}
rowLst.add(cellValue);
}
/** 保存第r行的第c列 */
dataLst.add(rowLst);
}
return dataLst;
}
/**
*
* 按指定坐标读取实体数据
* <按顺序放入带有注解的实体成员变量中>
*
* @param wb 工作簿
* @param t 实体
* @param in 输入流
* @param integers 指定需要解析的坐标
* @return T 相应实体
* @throws IOException
* @throws Exception
* @see [类、类#方法、类#成员]
*/
@SuppressWarnings("unused")
public static <T> T readDateT(Workbook wb, T t, InputStream in, Integer[]... integers)
throws IOException, Exception
{
Sheet sheet = wb.getSheetAt(0);
Object entityMemberValue = "";
Field[] fields = t.getClass().getDeclaredFields();
int startCell = 0;
/** 循环出需要的成员 */
for (int f = 0; f < fields.length; f++)
{
fields[f].setAccessible(true);
String fieldName = fields[f].getName();
boolean fieldHasAnno = fields[f].isAnnotationPresent(IsNeeded.class);
if (fieldHasAnno)
{
IsNeeded annotation = fields[f].getAnnotation(IsNeeded.class);
boolean isNeeded = annotation.isNeeded();
if (isNeeded)
{
int x = integers[startCell][0] - 1;
int y = integers[startCell][1] - 1;
Row row = sheet.getRow(x);
Cell cell = row.getCell(y);
if (row == null)
{
continue;
}
String cellValue = getCellValue(cell);
entityMemberValue = getEntityMemberValue(entityMemberValue, fields, f, cellValue);
PropertyUtils.setProperty(t, fieldName, entityMemberValue);
startCell++;
}
}
}
return t;
}
/**
*
* 读取列表数据
* <按顺序放入带有注解的实体成员变量中>
*
* @param wb 工作簿
* @param t 实体
* @param beginLine 开始行数
* @param totalcut 结束行数减去相应行数
* @return List<T> 实体列表
* @throws Exception
* @see [类、类#方法、类#成员]
*/
@SuppressWarnings("unchecked")
public static <T> List<T> readDateListT(Workbook wb, T t, int beginLine, int totalcut)
throws Exception
{
List<T> listt = new ArrayList<T>();
/** 得到第一个shell */
Sheet sheet = wb.getSheetAt(0);
/** 得到Excel的行数 */
totalRows = sheet.getPhysicalNumberOfRows();
/** 得到Excel的列数 */
if (totalRows >= 1 && sheet.getRow(0) != null)
{
totalCells = sheet.getRow(0).getPhysicalNumberOfCells();
}
/** 循环Excel的行 */
for (int r = beginLine - 1; r < totalRows - totalcut; r++)
{
Object newInstance = t.getClass().newInstance();
Row row = sheet.getRow(r);
if (row == null)
{
continue;
}
Object entityMemberValue = "";
Field[] fields = t.getClass().getDeclaredFields();
int startCell = 0;
for (int f = 0; f < fields.length; f++)
{
fields[f].setAccessible(true);
String fieldName = fields[f].getName();
boolean fieldHasAnno = fields[f].isAnnotationPresent(IsNeeded.class);
if (fieldHasAnno)
{
IsNeeded annotation = fields[f].getAnnotation(IsNeeded.class);
boolean isNeeded = annotation.isNeeded();
if (isNeeded)
{
Cell cell = row.getCell(startCell);
String cellValue = getCellValue(cell);
entityMemberValue = getEntityMemberValue(entityMemberValue, fields, f, cellValue);
PropertyUtils.setProperty(newInstance, fieldName, entityMemberValue);
startCell++;
}
}
}
listt.add((T)newInstance);
}
return listt;
}
/**
*
* 根据Excel表格中的数据判断类型得到值
*
* @param cell
* @return
* @see [类、类#方法、类#成员]
*/
private static String getCellValue(Cell cell)
{
String cellValue = "";
if (null != cell)
{
switch (cell.getCellType())
{
case HSSFCell.CELL_TYPE_NUMERIC:
if (org.apache.poi.ss.usermodel.DateUtil.isCellDateFormatted(cell))
{
Date theDate = cell.getDateCellValue();
SimpleDateFormat dff = new SimpleDateFormat("yyyy-MM-dd");
cellValue = dff.format(theDate);
}
else
{
DecimalFormat df = new DecimalFormat("0");
cellValue = df.format(cell.getNumericCellValue());
}
break;
case HSSFCell.CELL_TYPE_STRING:
cellValue = cell.getStringCellValue();
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
cellValue = cell.getBooleanCellValue() + "";
break;
case HSSFCell.CELL_TYPE_FORMULA:
cellValue = cell.getCellFormula() + "";
break;
case HSSFCell.CELL_TYPE_BLANK:
cellValue = "";
break;
case HSSFCell.CELL_TYPE_ERROR:
cellValue = "非法字符";
break;
default:
cellValue = "未知类型";
break;
}
}
return cellValue;
}
/**
*
* 根据实体成员变量的类型得到成员变量的值
*
* @param realValue
* @param fields
* @param f
* @param cellValue
* @return
* @see [类、类#方法、类#成员]
*/
private static Object getEntityMemberValue(Object realValue, Field[] fields, int f, String cellValue)
{
String type = fields[f].getType().getName();
switch (type)
{
case "char":
case "java.lang.Character":
case "java.lang.String":
realValue = cellValue;
break;
case "java.util.Date":
realValue = StringUtils.isBlank(cellValue) ? null : DateUtil.strToDate(cellValue, DateUtil.YYYY_MM_DD);
break;
case "java.lang.Integer":
realValue = StringUtils.isBlank(cellValue) ? null : Integer.valueOf(cellValue);
break;
case "int":
case "float":
case "double":
case "java.lang.Double":
case "java.lang.Float":
case "java.lang.Long":
case "java.lang.Short":
case "java.math.BigDecimal":
realValue = StringUtils.isBlank(cellValue) ? null : new BigDecimal(cellValue);
break;
default:
break;
}
return realValue;
}
/**
*
* 根据路径或文件名选择Excel版本
*
*
* @param filePathOrName
* @param in
* @return
* @throws IOException
* @see [类、类#方法、类#成员]
*/
public static Workbook chooseWorkbook(String filePathOrName, InputStream in)
throws IOException
{
/** 根据版本选择创建Workbook的方式 */
Workbook wb = null;
boolean isExcel2003 = ExcelVersionUtil.isExcel2003(filePathOrName);
if (isExcel2003)
{
wb = new HSSFWorkbook(in);
}
else
{
wb = new XSSFWorkbook(in);
}
return wb;
}
static class ExcelVersionUtil
{
/**
*
* 是否是2003的excel，返回true是2003
*
*
* @param filePath
* @return
* @see [类、类#方法、类#成员]
*/
public static boolean isExcel2003(String filePath)
{
return filePath.matches("^.+\\.(?i)(xls)$");
}
/**
*
* 是否是2007的excel，返回true是2007
*
*
* @param filePath
* @return
* @see [类、类#方法、类#成员]
*/
public static boolean isExcel2007(String filePath)
{
return filePath.matches("^.+\\.(?i)(xlsx)$");
}
}
public static class DateUtil
{
public static final String YYYY_MM_DDHHMMSS = "yyyy-MM-dd HH:mm:ss";
public static final String YYYY_MM_DD = "yyyy-MM-dd";
public static final String YYYY_MM = "yyyy-MM";
public static final String YYYY = "yyyy";
public static final String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";
public static final String YYYYMMDD = "yyyyMMdd";
public static final String YYYYMM = "yyyyMM";
public static final String YYYYMMDDHHMMSS_1 = "yyyy/MM/dd HH:mm:ss";
public static final String YYYY_MM_DD_1 = "yyyy/MM/dd";
public static final String YYYY_MM_1 = "yyyy/MM";
/**
*
* 自定义取值，Date类型转为String类型
*
* @param date 日期
* @param pattern 格式化常量
* @return
* @see [类、类#方法、类#成员]
*/
public static String dateToStr(Date date, String pattern)
{
SimpleDateFormat format = null;
if (null == date)
return null;
format = new SimpleDateFormat(pattern, Locale.getDefault());
return format.format(date);
}
/**
* 将字符串转换成Date类型的时间
* <hr>
*
* @param s 日期类型的字符串<br>
* datePattern :YYYY_MM_DD<br>
* @return java.util.Date
*/
public static Date strToDate(String s, String pattern)
{
if (s == null)
{
return null;
}
Date date = null;
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
try
{
date = sdf.parse(s);
}
catch (ParseException e)
{
e.printStackTrace();
}
return date;
}
}
}
| 
