import java.io.*;
import java.util.ArrayList;
import java.util.List;
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读写工具类 */
public class poioutput {
private Workbook wb;
private Sheet sheet;
private Row row;
public void ReadExcelUtils(String filepath) {
if (filepath == null) {
return;
}
String ext = filepath.substring(filepath.lastIndexOf("."));
try {
InputStream is = new FileInputStream(filepath);
if (".xls".equals(ext)) {
wb = new HSSFWorkbook(is);
} else if (".xlsx".equals(ext)) {
wb = new XSSFWorkbook(is);
} else {
wb = null;
}
} catch (FileNotFoundException e) {
} catch (IOException e) {
}
}
/**
* 读取Excel表格表头的内容
* @return String 表头内容的数组
*/
public String[] readExcelTitle() throws Exception{
if(wb==null){
throw new Exception("Workbook对象为空!");
}
sheet = wb.getSheetAt(0);
row = sheet.getRow(0);
// 标题总列数
int colNum = row.getPhysicalNumberOfCells();
String[] title = new String[colNum];
for (int i = 0; i < colNum; i++) {
// title[i] = getStringCellValue(row.getCell((short) i));
title[i] = row.getCell(i).getStringCellValue();
}
return title;
}
/**
* 读取Excel数据内容
* @return Map 包含单元格数据内容的Map对象
*/
public void readExcelContent() throws Exception{
if(wb==null){
throw new Exception("Workbook对象为空!");
}
sheet = wb.getSheetAt(0);
// 得到总行数
int rowNum = sheet.getLastRowNum();
row = sheet.getRow(0);
int colNum = row.getPhysicalNumberOfCells();
// 正文内容应该从第二行开始,第一行为表头的标题
for (int i = 1; i <= rowNum; i++) {
row = sheet.getRow(i);
int j = 0;
while (j < colNum) {
System.out.print(row.getCell(j)+" ");
j++;
}
System.out.println("");
}
}
结果: