Java实现EXCEL操作(1)

1、实现方法：

现在有三种方法去实现：jxl 、poi 、 FastExcel：97~2003

在这里只讲poi实现方法。poi的包可以去Apache官网上去下载：http://poi.apache.org/download.html

2、poi实现

【1】低版本的导入导出方法：

需要导入jar包：

poi-3.1.5.jar

commons-io-2.2。jar

生成EXCEL：

class="java">import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.commons.io.FileUtils;

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;

public class PoiExpExcel {

/**

* 生成Excel文件

*/

public static void main(String[] args) {

String[] title = {"id", "name", "sex"};

//创建工作薄

HSSFWorkbook workbook = new HSSFWorkbook();

//创建一个工作表sheet

HSSFSheet sheet = workbook.createSheet();

//创建爱你第一行

HSSFRow row = sheet.createRow(0);

HSSFCell cell = null;

//插入第一行数据id、name、sex

for (int i = 0; i < title.length; i++) {

cell = row.createCell(i);

cell.setCellValue(title[i]);

}

//追加数据

for(int i = 1; i <= 10; i++) {

HSSFRow nextrow = sheet.createRow(i);

HSSFCell cell2 = nextrow.createCell(0);

cell2.setCellValue("" + i);

cell2 =nextrow.createCell(1);

cell2.setCellValue("user" + i);

cell2 =nextrow.createCell(2);

cell2.setCellValue("男");

}

//创建一个文件

File file =new File("C:/Users/Administrator/Desktop/demo1.xls"); //在这里填写存放路径

try {

file.createNewFile();

FileOutputStream stream = FileUtils.openOutputStream(file);

workbook.write(stream);

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

解析EXCEL：

import java.io.File;

import java.io.IOException;

import org.apache.commons.io.FileUtils;

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;

public class PoiReadExcel {

public static void main(String[] args) {

/**

* 解析Excel文件

*/

File file = new File("C:/Users/Administrator/Desktop/demo1.xls");

try {

HSSFWorkbook workbook =

new HSSFWorkbook(FileUtils.openInputStream(file));

//获取第一个工作表workbook.getSheet("Sheet0");

// HSSFSheet sheet = workbook.getSheet("Sheet0");

//读取默认第一个工作表sheet

HSSFSheet sheet = workbook.getSheetAt(0);

int firstRowNum = 0;

//获取sheet中最后一行行号

int lastRowNum = sheet.getLastRowNum();

for(int i = firstRowNum; i <= lastRowNum; i++) {

HSSFRow row = sheet.getRow(i);

//获取当前行最后单元格列号

int lastCellNum = row.getLastCellNum();

for(int j = 0; j < lastCellNum; j++) {

HSSFCell cell = row.getCell(j);

String value = cell.getStringCellValue();

System.out.print(value + " ");

}

System.out.println();

}

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

【2】高版本导入导出的方法：

需要导入包：

如附件

生成EXCEL：

import java.io.File;

import java.io.FileOutputStream;

import org.apache.commons.io.FileUtils;

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

public class CopyOfPoiExp07Excel {

/**

* 生成Excel文件

*/

public static void main(String[] args) {

String[] title = {"id", "name", "sex"};

//创建工作薄

XSSFWorkbook workbook = new XSSFWorkbook();

//创建一个工作表sheet

XSSFSheet sheet = workbook.createSheet();

//创建爱你第一行

XSSFRow row = sheet.createRow(0);

XSSFCell cell = null;

//插入第一行数据id、name、sex

for (int i = 0; i < title.length; i++) {

cell = row.createCell(i);

cell.setCellValue(title[i]);

}

//追加数据

for(int i = 1; i <= 10; i++) {

XSSFRow nextrow = sheet.createRow(i);

XSSFCell cell2 = nextrow.createCell(0);

cell2.setCellValue("" + i);

cell2 =nextrow.createCell(1);

cell2.setCellValue("user" + i);

cell2 =nextrow.createCell(2);

cell2.setCellValue("男");

}

//创建一个文件

File file =new File("C:/Users/Administrator/Desktop/demo1.xlsx");

try {

file.createNewFile();

FileOutputStream stream = FileUtils.openOutputStream(file);

workbook.write(stream);

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

解析EXCEL：

import java.io.File;

import java.io.IOException;

import org.apache.commons.io.FileUtils;

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 CopyOfPoiRead07Excel {

public static void main(String[] args) {

//需要解析的Excel文件

File file = new File("C:/Users/Administrator/Desktop/demo1.xls");

try {

XSSFWorkbook workbook =

new XSSFWorkbook(FileUtils.openInputStream(file));

//获取第一个工作表workbook.getSheet("Sheet0");

// XSSFSheet sheet = workbook.getSheet("Sheet0");

//读取默认第一个工作表sheet

XSSFSheet sheet = workbook.getSheetAt(0);

int firstRowNum = 0;

//获取sheet中最后一行行号

int lastRowNum = sheet.getLastRowNum();

for(int i = firstRowNum; i <= lastRowNum; i++) {

XSSFRow row = sheet.getRow(i);

//获取当前行最后单元格列号

int lastCellNum = row.getLastCellNum();

for(int j = 0; j < lastCellNum; j++) {

XSSFCell cell = row.getCell(j);

String value = cell.getStringCellValue();

System.out.print(value + " ");

}

System.out.println();

}

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

生成文件：

[img][/img]

大小: 25.2 KB

大小: 75 KB

查看图片附件