将数据导出到Excel（java操作Excel）
工作需要，万般无奈在网上查了好多资料 ，这导出到Excel的方法有很多，我看到了这个，加上了自己的一些修改，分享给大家，
望大家多多的指正，并且希望你不吝共享你更好的方法哦，感激不尽。
1.封装要到处的数据类，这里使用Student类举例：
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
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。
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：
导出数据到excel <form action="excel" method="post"> <input type="submit" name="" value="导出"> </form>