poi excel读取

1.需要的包poi-3.9.jar poi-ooxml-3.9.jar

2.代码

package com.java.poi;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStream;

import java.util.ArrayList;

import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFCell;

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.xssf.usermodel.XSSFCell;

import org.apache.poi.xssf.usermodel.XSSFRow;

import org.apache.poi.xssf.usermodel.XSSFSheet;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class ReadExcel {

//读取xlsx格式

public List<Student> readXlsx(String path) throws IOException {

InputStream is = new FileInputStream(path);

XSSFWorkbook xssfWorkbook = new XSSFWorkbook(is);

Student student = null;

List<Student> list = new ArrayList<Student>();

// Read the Sheet

for (int numSheet = 0; numSheet < xssfWorkbook.getNumberOfSheets(); numSheet++) {

XSSFSheet xssfSheet = xssfWorkbook.getSheetAt(numSheet);

if (xssfSheet == null) {

continue;

}

// Read the Row

for (int rowNum = 1; rowNum <= xssfSheet.getLastRowNum(); rowNum++) {

XSSFRow xssfRow = xssfSheet.getRow(rowNum);

if (xssfRow != null) {

student = new Student();

XSSFCell no = xssfRow.getCell(0);

XSSFCell name = xssfRow.getCell(1);

XSSFCell age = xssfRow.getCell(2);

XSSFCell score = xssfRow.getCell(3);

student.setName(getValue(name));

// student.setName(getValue(name));

// student.setAge(getValue(age));

// student.setScore(Float.valueOf(getValue(score)));

list.add(student);

}

}

}

return list;

}

//读取xls格式

public List<Student> readXls(String path) throws IOException {

InputStream is = new FileInputStream(path);

HSSFWorkbook hssfWorkbook = new HSSFWorkbook(is);

Student student = null;

List<Student> list = new ArrayList<Student>();

// Read the Sheet

for (int numSheet = 0; numSheet < hssfWorkbook.getNumberOfSheets(); numSheet++) {

HSSFSheet hssfSheet = hssfWorkbook.getSheetAt(numSheet);

if (hssfSheet == null) {

continue;

}

// Read the Row

for (int rowNum = 1; rowNum <= hssfSheet.getLastRowNum(); rowNum++) {

HSSFRow hssfRow = hssfSheet.getRow(rowNum);

if (hssfRow != null) {

student = new Student();

HSSFCell no = hssfRow.getCell(0);

HSSFCell name = hssfRow.getCell(1);

HSSFCell age = hssfRow.getCell(2);

HSSFCell score = hssfRow.getCell(3);

student.setName(getValue(name));

list.add(student);

}

}

}

return list;

}

private String getValue(XSSFCell xssfRow) {

if (xssfRow.getCellType() == xssfRow.CELL_TYPE_BOOLEAN) {

return String.valueOf(xssfRow.getBooleanCellValue());

} else if (xssfRow.getCellType() == xssfRow.CELL_TYPE_NUMERIC) {

return String.valueOf(xssfRow.getNumericCellValue());

} else {

return String.valueOf(xssfRow.getStringCellValue());

}

}

private String getValue(HSSFCell hssfCell) {

if (hssfCell.getCellType() == hssfCell.CELL_TYPE_BOOLEAN) {

return String.valueOf(hssfCell.getBooleanCellValue());

} else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_NUMERIC) {

return String.valueOf(hssfCell.getNumericCellValue());

} else {

return String.valueOf(hssfCell.getStringCellValue());

}

}

}