将数据导出到Excel（java操作Excel）

1.封装要到处的数据类，这里使用Student类举例：

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package com.jeelon.exportExcle;

public class Student {

private int id;

private String name ;

private int age;

private String address;

private String tel;

private char sex;

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

public String getAddress() {

return address;

}

public void setAddress(String address) {

this.address = address;

}

public String getTel() {

return tel;

}

public void setTel(String tel) {

this.tel = tel;

}

public char getSex() {

return sex;

}

public void setSex(char sex) {

this.sex = sex;

}

@Override

public String toString() {

return "Student [id=" + id + ", name=" + name + ", age=" + age

+ ", address=" + address + ", tel=" + tel + ", sex=" + sex

+ "]";

}

public Student(int id, String name, int age, String address, String tel,

char sex) {

super();

this.id = id;

this.name = name;

this.age = age;

this.address = address;

this.tel = tel;

this.sex = sex;

}

public Student() {

super();

}

}

2.ExportExcel工具类

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package com.jeelon.exportExcle;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

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

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

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

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

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.hssf.util.HSSFColor;

import org.apache.poi.hssf.util.Region;

/**

* EXCEL报表工具类.

*

* @author Jeelon

*/

public class ExportExcel {

private HSSFWorkbook wb = null;

private HSSFSheet sheet = null;

/**

* @param wb

* @param sheet

*/

public ExportExcel(HSSFWorkbook wb, HSSFSheet sheet) {

// super();

this.wb = wb;

this.sheet = sheet;

}

/**

* 创建通用EXCEL头部

*

* @param headString

* 头部显示的字符

* @param colSum

* 该报表的列数

*/

@SuppressWarnings({ "deprecation", "unused" })

public void createNormalHead(String headString, int colSum) {

HSSFRow row = sheet.createRow(0);

// 设置第一行

HSSFCell cell = row.createCell(0);

// row.setHeight((short) 1000);

// 定义单元格为字符串类型

cell.setCellType(HSSFCell.ENCODING_UTF_16);// 中文处理

cell.setCellValue(new HSSFRichTextString(headString));

// 指定合并区域

/**

* public Region(int rowFrom, short colFrom, int rowTo, short colTo)

*/

sheet.addMergedRegion(new Region(0, (short) 0, 0, (short) colSum));

// 定义单元格格式，添加单元格表样式，并添加到工作簿

HSSFCellStyle cellStyle = wb.createCellStyle();

// 设置单元格水平对齐类型

cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 指定单元格居中对齐

cellStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 指定单元格垂直居中对齐

cellStyle.setWrapText(true);// 指定单元格自动换行

// 设置单元格字体

HSSFFont font = wb.createFont();

// font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

// font.setFontName("宋体");

// font.setFontHeight((short) 600);

// cellStyle.setFont(font);

cell.setCellStyle(cellStyle);

}

/**

* 创建通用报表第二行

*

* @param params

* 统计条件数组

* @param colSum

* 需要合并到的列索引

*/

@SuppressWarnings("deprecation")

public void createNormalTwoRow(String[] params, int colSum) {

// 创建第二行

HSSFRow row1 = sheet.createRow(1);

row1.setHeight((short) 400);

HSSFCell cell2 = row1.createCell(0);

cell2.setCellType(HSSFCell.ENCODING_UTF_16);

cell2.setCellValue(new HSSFRichTextString("时间：" + params[0] + "至"

+ params[1]));

// 指定合并区域

/**

* public Region(int rowFrom, short colFrom, int rowTo, short colTo)

*/

sheet.addMergedRegion(new Region(1, (short) 0, 1, (short) colSum));

HSSFCellStyle cellStyle = wb.createCellStyle();

cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 指定单元格居中对齐

cellStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 指定单元格垂直居中对齐

cellStyle.setWrapText(true);// 指定单元格自动换行

// 设置单元格字体

HSSFFont font = wb.createFont();

font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

font.setFontName("宋体");

font.setFontHeight((short) 250);

cellStyle.setFont(font);

cell2.setCellStyle(cellStyle);

}

/**

* 设置报表标题

*

* @param columHeader

* 标题字符串数组

*/

public void createColumHeader(String[] columHeader) {

// 设置列头 在第三行

HSSFRow row2 = sheet.createRow(2);

// 指定行高

row2.setHeight((short) 600);

HSSFCellStyle cellStyle = wb.createCellStyle();

cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 指定单元格居中对齐

cellStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 指定单元格垂直居中对齐

cellStyle.setWrapText(true);// 指定单元格自动换行

// 单元格字体

HSSFFont font = wb.createFont();

font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

font.setFontName("宋体");

font.setFontHeight((short) 250);

cellStyle.setFont(font);

// 设置单元格背景色

cellStyle.setFillForegroundColor(HSSFColor.GREY_25_PERCENT.index);

cellStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);

HSSFCell cell3 = null;

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

cell3 = row2.createCell(i);

cell3.setCellType(HSSFCell.ENCODING_UTF_16);

cell3.setCellStyle(cellStyle);

cell3.setCellValue(new HSSFRichTextString(columHeader[i]));

}

}

/**

* 创建内容单元格

*

* @param wb

* HSSFWorkbook

* @param row

* HSSFRow

* @param col

* short型的列索引

* @param align

* 对齐方式

* @param val

* 列值

*/

public void cteateCell(HSSFWorkbook wb, HSSFRow row, int col, short align,

String val) {

HSSFCell cell = row.createCell(col);

cell.setCellType(HSSFCell.ENCODING_UTF_16);

cell.setCellValue(new HSSFRichTextString(val));

HSSFCellStyle cellstyle = wb.createCellStyle();

cellstyle.setAlignment(align);

cell.setCellStyle(cellstyle);

}

/**

* 创建合计行

*

* @param colSum

* 需要合并到的列索引

* @param cellValue

*/

@SuppressWarnings("deprecation")

public void createLastSumRow(int colSum, String[] cellValue) {

HSSFCellStyle cellStyle = wb.createCellStyle();

cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 指定单元格居中对齐

cellStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 指定单元格垂直居中对齐

cellStyle.setWrapText(true);// 指定单元格自动换行

// 单元格字体

HSSFFont font = wb.createFont();

font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

font.setFontName("宋体");

font.setFontHeight((short) 250);

cellStyle.setFont(font);

// 获取工作表最后一行

HSSFRow lastRow = sheet.createRow((short) (sheet.getLastRowNum() + 1));

HSSFCell sumCell = lastRow.createCell(0);

sumCell.setCellValue(new HSSFRichTextString("合计"));

sumCell.setCellStyle(cellStyle);

// 合并 最后一行的第零列-最后一行的第一列

sheet.addMergedRegion(new Region(sheet.getLastRowNum(), (short) 0,

sheet.getLastRowNum(), (short) colSum));// 指定合并区域

for (int i = 2; i < (cellValue.length + 2); i++) {

// 定义最后一行的第三列

sumCell = lastRow.createCell(i);

sumCell.setCellStyle(cellStyle);

// 定义数组 从0开始。

sumCell.setCellValue(new HSSFRichTextString(cellValue[i - 2]));

}

}

/**

* 输入EXCEL文件

*

* @param fileName

* 文件名

*/

public void outputExcel(String fileName) {

FileOutputStream fos = null;

try {

fos = new FileOutputStream(new File(fileName));

wb.write(fos);

fos.close();

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

}

/**

* @return the sheet

*/

public HSSFSheet getSheet() {

return sheet;

}

/**

* @param sheet

* the sheet to set

*/

public void setSheet(HSSFSheet sheet) {

this.sheet = sheet;

}

/**

* @return the wb

*/

public HSSFWorkbook getWb() {

return wb;

}

/**

* @param wb

* the wb to set

*/

public void setWb(HSSFWorkbook wb) {

this.wb = wb;

}

}

3.这里只使用了Servlet，可以根据需要来使用在不同的地方。

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package com.jeelon.exportExcle;

import java.io.BufferedOutputStream;

import java.io.IOException;

import java.io.OutputStream;

import java.util.ArrayList;

import java.util.List;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

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

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

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

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

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

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

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

@SuppressWarnings("serial")

public class OutputExcel extends HttpServlet {

protected void doGet(HttpServletRequest request,

HttpServletResponse response) throws ServletException, IOException {

this.doPost(request, response);

}

protected void doPost(HttpServletRequest request,

HttpServletResponse response) throws ServletException, IOException {

System.out.println("helloworld");

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

Student student1 = new Student(1, "Jeelon", 21, "贵阳市 ", "15085943968",

'男');

Student student2 = new Student(2, "fengxu", 21, "贵阳市 ", "15085943968",

'男');

Student student3 = new Student(3, "jerry", 21, "贵阳市 ", "15085943968",

'男');

Student student4 = new Student(4, "merry", 21, "贵阳市 ", "15085943968",

'男');

Student student5 = new Student(5, "lariiy", 21, "贵阳市 ", "15085943968",

'男');

Student student6 = new Student(6, "monr", 21, "贵阳市 ", "15085943968",

'男');

Student student7 = new Student(7, "join", 21, "贵阳市 ", "15085943968",

'男');

Student student8 = new Student(8, "jay chou", 21, "贵阳市 ",

"15085943968", '男');

Student student9 = new Student(9, "laonb", 21, "贵阳市 ", "15085943968",

'男');

Student student0 = new Student(0, "mudg", 21, "贵阳市 ", "15085943968",

'男');

list.add(student1);

list.add(student2);

list.add(student3);

list.add(student4);

list.add(student5);

list.add(student6);

list.add(student7);

list.add(student8);

list.add(student9);

list.add(student0);

String fileName = "导出Excel.xls";

fileName = new String(fileName.getBytes("GBK"), "iso8859-1");

response.reset();

response.setHeader("Content-Disposition", "attachment;filename="

+ fileName);// 指定下载的文件名

response.setContentType("application/vnd.ms-excel");

response.setHeader("Pragma", "no-cache");

response.setHeader("Cache-Control", "no-cache");

response.setDateHeader("Expires", 0);

OutputStream output = response.getOutputStream();

BufferedOutputStream bufferedOutPut = new BufferedOutputStream(output);

// 定义单元格报头

String worksheetTitle = "Excel导出Student信息";

HSSFWorkbook wb = new HSSFWorkbook();

// 创建单元格样式

HSSFCellStyle cellStyleTitle = wb.createCellStyle();

// 指定单元格居中对齐

cellStyleTitle.setAlignment(HSSFCellStyle.ALIGN_CENTER);

// 指定单元格垂直居中对齐

cellStyleTitle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);

// 指定当单元格内容显示不下时自动换行

cellStyleTitle.setWrapText(true);

// ------------------------------------------------------------------

HSSFCellStyle cellStyle = wb.createCellStyle();

// 指定单元格居中对齐

cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);

// 指定单元格垂直居中对齐

cellStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);

// 指定当单元格内容显示不下时自动换行

cellStyle.setWrapText(true);

// ------------------------------------------------------------------

// 设置单元格字体

HSSFFont font = wb.createFont();

font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

font.setFontName("宋体");

font.setFontHeight((short) 200);

cellStyleTitle.setFont(font);

// 工作表名

String id = "id";

String name = "name";

String age = "age";

String address = "address";

String tel = "tel";

String sex = "sex";

HSSFSheet sheet = wb.createSheet();

ExportExcel exportExcel = new ExportExcel(wb, sheet);

// 创建报表头部

exportExcel.createNormalHead(worksheetTitle, 6);

// 定义第一行

HSSFRow row1 = sheet.createRow(1);

HSSFCell cell1 = row1.createCell(0);

//第一行第一列

cell1.setCellStyle(cellStyleTitle);

cell1.setCellValue(new HSSFRichTextString(id));

//第一行第er列

cell1 = row1.createCell(1);

cell1.setCellStyle(cellStyleTitle);

cell1.setCellValue(new HSSFRichTextString(name));

//第一行第san列

cell1 = row1.createCell(2);

cell1.setCellStyle(cellStyleTitle);

cell1.setCellValue(new HSSFRichTextString(age));

//第一行第si列

cell1 = row1.createCell(3);

cell1.setCellStyle(cellStyleTitle);

cell1.setCellValue(new HSSFRichTextString(address));

//第一行第wu列

cell1 = row1.createCell(4);

cell1.setCellStyle(cellStyleTitle);

cell1.setCellValue(new HSSFRichTextString(tel));

//第一行第liu列

cell1 = row1.createCell(5);

cell1.setCellStyle(cellStyleTitle);

cell1.setCellValue(new HSSFRichTextString(sex));

//第一行第qi列

cell1 = row1.createCell(6);

cell1.setCellStyle(cellStyleTitle);

cell1.setCellValue(new HSSFRichTextString(sex));

//定义第二行

HSSFRow row = sheet.createRow(2);

HSSFCell cell = row.createCell(1);

Student student = new Student();

for (int i = 0; i < list.size(); i++) {

student = list.get(i);

row = sheet.createRow(i + 2);

cell = row.createCell(0);

cell.setCellStyle(cellStyle);

cell.setCellValue(new HSSFRichTextString(student.getId() + ""));

cell = row.createCell(1);

cell.setCellStyle(cellStyle);

cell.setCellValue(new HSSFRichTextString(student.getName()));

cell = row.createCell(2);

cell.setCellStyle(cellStyle);

cell.setCellValue(new HSSFRichTextString(student.getAge() + ""));

cell = row.createCell(3);

cell.setCellStyle(cellStyle);

cell.setCellValue(new HSSFRichTextString(student.getAddress() + ""));

cell = row.createCell(4);

cell.setCellStyle(cellStyle);

cell.setCellValue(new HSSFRichTextString(student.getAddress()));

cell = row.createCell(5);

cell.setCellStyle(cellStyle);

cell.setCellValue(new HSSFRichTextString(student.getTel()));

cell = row.createCell(6);

cell.setCellValue(new HSSFRichTextString(String.valueOf(student.getSex())));

cell.setCellStyle(cellStyle);

}

try {

bufferedOutPut.flush();

wb.write(bufferedOutPut);

bufferedOutPut.close();

} catch (IOException e) {

e.printStackTrace();

System.out.println("Output is closed ");

} finally {

list.clear();

}

}

}

4.由于使用的是Servlet ，当然还有配置Servlet哦 这里就不再说乐吧 相信他对于你是so easy！

5.前台jsp页面：

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导出数据到excel

<form action="excel" method="post">

<input type="submit" name="" value="导出">

</form>