标签：val employee == static mat usermod print system 获取
1.解析结果全部为String格式：
package com.guangzhouhuayu.util;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.FileInputStream;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
/**
* 作者：人生若只如初见
* 时间：2017/7/14
* 描述：
*/
public class ExcelUtils {
/**
* 解析 后缀.xls
* @param is
* @return
* @throws Exception
*/
public static List<List<String>> readXls(InputStream is) throws Exception{
//HSSFWorkbook表示整个excel对象
HSSFWorkbook hssfWorkbook = new HSSFWorkbook(is);
List<List<String>> result = new ArrayList<List<String>>();
//获取excel中的每一页 hssfSheet对象
for(int numSheet = 0; numSheet < hssfWorkbook.getNumberOfSheets(); numSheet++){
HSSFSheet hssfSheet = hssfWorkbook.getSheetAt(numSheet);
if(hssfSheet == null) {
continue;
}
//如果不为空 处理当前sheet 获取每一行 hssfRow对象
List<String> rowList;
//获取标题行列数
int lastCellNum = 0;
//1.获取标题行
HSSFRow hssfRow = hssfSheet.getRow(0);
if(hssfRow != null){
rowList = new ArrayList<String>();
//获取标题行列数
lastCellNum = hssfRow.getLastCellNum();
//获取标题行的每一列 cell对象
for(int i = 0; i < lastCellNum; i++){
HSSFCell cell = hssfRow.getCell(i);
if(cell == null) {
rowList.add(null);
continue;
} else{
cell.setCellType(Cell.CELL_TYPE_STRING);
String cellVal = cell.getStringCellValue();
rowList.add(cellVal);
}
}
result.add(rowList);
}
//2.获取其他行
for(int rowNum =1; rowNum <= hssfSheet.getLastRowNum(); rowNum++ ){
hssfRow = hssfSheet.getRow(rowNum);
if(hssfRow == null){
continue;
}
rowList = new ArrayList<String>();
//获取每一列 cell对象
for(int i = 0; i < lastCellNum; i++){
HSSFCell cell = hssfRow.getCell(i);
if(cell == null) {
rowList.add(null);
continue;
}
//如果cell != null, 设置取值格式为String类型
cell.setCellType(Cell.CELL_TYPE_STRING);
String cellVal = cell.getStringCellValue();
rowList.add(cellVal);
}
result.add(rowList);
}
}
return result;
}
/**
* 解析 后缀.xlsx
* @param is
* @return
* @throws Exception
*/
public static List<List<String>> readXlsx(InputStream is) throws Exception{
//XSSFWorkbook表示整个excel对象
XSSFWorkbook XSSFWorkbook = new XSSFWorkbook(is);
List<List<String>> result = new ArrayList<List<String>>();
//获取excel中的每一页 XSSFSheet对象
for(int numSheet = 0; numSheet < XSSFWorkbook.getNumberOfSheets(); numSheet++){
XSSFSheet XSSFSheet = XSSFWorkbook.getSheetAt(numSheet);
if(XSSFSheet == null) {
continue;
}
//如果不为空 处理当前sheet 获取每一行 XSSFRow对象
List<String> rowList;
//获取标题行列数
int lastCellNum = 0;
//1.获取标题行
XSSFRow XSSFRow = XSSFSheet.getRow(0);
if(XSSFRow != null){
rowList = new ArrayList<String>();
//获取标题行列数
lastCellNum = XSSFRow.getLastCellNum();
//获取标题行的每一列 cell对象
for(int i = 0; i < lastCellNum; i++){
XSSFCell cell = XSSFRow.getCell(i);
if(cell == null) {
rowList.add(null);
continue;
} else{
//如果cell != null, 设置取值格式为String类型
cell.setCellType(Cell.CELL_TYPE_STRING);
String cellVal = cell.getStringCellValue();
rowList.add(cellVal);
}
}
result.add(rowList);
}
//2.获取其他行
for(int rowNum =1; rowNum <= XSSFSheet.getLastRowNum(); rowNum++ ){
XSSFRow = XSSFSheet.getRow(rowNum);
if(XSSFRow == null){
continue;
}
rowList = new ArrayList<String>();
//获取每一列 cell对象
for(int i = 0; i < lastCellNum; i++){
XSSFCell cell = XSSFRow.getCell(i);
if(cell == null) {
rowList.add(null);
continue;
}
//如果cell != null, 设置取值格式为String类型
cell.setCellType(Cell.CELL_TYPE_STRING);
String cellVal = cell.getStringCellValue();
rowList.add(cellVal);
}
result.add(rowList);
}
}
return result;
}
}
2.解析格式按类型转换：
package com.chx.test;
import java.io.FileInputStream;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.apache.poi.hssf.eventusermodel.HSSFEventFactory;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
public class ResolveExcel {
private List<List<String>> readXls(InputStream is) throws Exception{
//HSSFWorkbook表示整个excel对象
HSSFWorkbook hssfWorkbook = new HSSFWorkbook(is);
List<List<String>> result = new ArrayList<List<String>>();
//获取excel中的每一页 hssfSheet对象
for(int numSheet = 0; numSheet < hssfWorkbook.getNumberOfSheets(); numSheet++){
HSSFSheet hssfSheet = hssfWorkbook.getSheetAt(numSheet);
if(hssfSheet == null) {
continue;
}
//如果不为空 处理当前sheet 获取每一行 hssfRow对象
List<String> rowList;
//获取标题行列数
int lastCellNum = 0;
//1.获取标题行
HSSFRow hssfRow = hssfSheet.getRow(0);
if(hssfRow != null){
rowList = new ArrayList<String>();
//获取标题行列数
lastCellNum = hssfRow.getLastCellNum();
//获取标题行的每一列 cell对象
for(int i = 0; i < lastCellNum; i++){
HSSFCell cell = hssfRow.getCell(i);
if(cell == null) {
rowList.add(null);
continue;
} else{
//如果cell != null, 设置取值格式为String类型
//cell.setCellType(Cell.CELL_TYPE_STRING);
//String cellVal = cell.getStringCellValue();
rowList.add(getCellStringValue(cell));
}
}
result.add(rowList);
}
//2.获取其他行
for(int rowNum =1; rowNum <= hssfSheet.getLastRowNum(); rowNum++ ){
hssfRow = hssfSheet.getRow(rowNum);
if(hssfRow == null){
continue;
}
rowList = new ArrayList<String>();
//获取每一列 cell对象
for(int i = 0; i < lastCellNum; i++){
HSSFCell cell = hssfRow.getCell(i);
if(cell == null) {
rowList.add(null);
continue;
}
//如果cell != null, 设置取值格式为String类型
//cell.setCellType(Cell.CELL_TYPE_STRING);
//String cellVal = cell.getStringCellValue();
rowList.add(getCellStringValue(cell));
}
result.add(rowList);
}
}
return result;
}
public String getCellStringValue(HSSFCell cell) {
String cellValue = "";
switch (cell.getCellType()) {
case HSSFCell.CELL_TYPE_STRING://字符串类型
cellValue = cell.getStringCellValue();
if(cellValue.trim().equals("")||cellValue.trim().length()<=0)
cellValue=" ";
break;
case HSSFCell.CELL_TYPE_NUMERIC: //数值类型
cellValue = String.valueOf(cell.getNumericCellValue());
break;
case HSSFCell.CELL_TYPE_FORMULA: //公式
cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
cellValue = String.valueOf(cell.getNumericCellValue());
break;
case HSSFCell.CELL_TYPE_BLANK:
cellValue=" ";
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
break;
case HSSFCell.CELL_TYPE_ERROR:
break;
default:
break;
}
return cellValue;
}
public static void main(String[] args) throws Exception {
String path = "e:\\employee.xls";
InputStream is = new FileInputStream(path);
ResolveExcel resolveExcel = new ResolveExcel();
List<List<String>> result = resolveExcel.readXls(is);
for(List<String> list : result){
for(String str : list){
System.out.print(str + ", ");
}
System.out.println();
}
}
}
标签：val employee == static mat usermod print system 获取
原文地址：http://www.cnblogs.com/chxbar/p/7192732.html
