Poi实现Excel导出工具类封装
工具类代码PoiExcelExport如下：
package com.myssm.util.poi;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Method;
import java.net.URLEncoder;
import java.text.DecimalFormat;
import java.util.List;
import javax.servlet.http.HttpServletResponse;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFPalette;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.util.CellRangeAddress;
public class PoiExcelExport {
HttpServletResponse response;
// 文件名
private String fileName ;
//文件保存路径
private String fileDir;
//sheet名
private String sheetName;
//表头字体
private String titleFontType = "Arial Unicode MS";
//表头背景色
private String titleBackColor = "C1FBEE";
//表头字号
private short titleFontSize = 12;
//添加自动筛选的列 如 A:M
private String address = "";
//正文字体
private String contentFontType = "Arial Unicode MS";
//正文字号
private short contentFontSize = 12;
//Float类型数据小数位
private String floatDecimal = ".00";
//Double类型数据小数位
private String doubleDecimal = ".00";
//设置列的公式
private String colFormula[] = null;
DecimalFormat floatDecimalFormat=new DecimalFormat(floatDecimal);
DecimalFormat doubleDecimalFormat=new DecimalFormat(doubleDecimal);
private HSSFWorkbook workbook = null;
public PoiExcelExport(String fileDir,String sheetName){
this.fileDir = fileDir;
this.sheetName = sheetName;
workbook = new HSSFWorkbook();
}
public PoiExcelExport(HttpServletResponse response,String fileName,String sheetName){
this.response = response;
this.sheetName = sheetName;
workbook = new HSSFWorkbook();
}
/**
* 设置表头字体.
* @param titleFontType
*/
public void setTitleFontType(String titleFontType) {
this.titleFontType = titleFontType;
}
/**
* 设置表头背景色.
* @param titleBackColor 十六进制
*/
public void setTitleBackColor(String titleBackColor) {
this.titleBackColor = titleBackColor;
}
/**
* 设置表头字体大小.
* @param titleFontSize
*/
public void setTitleFontSize(short titleFontSize) {
this.titleFontSize = titleFontSize;
}
/**
* 设置表头自动筛选栏位,如A:AC.
* @param address
*/
public void setAddress(String address) {
this.address = address;
}
/**
* 设置正文字体.
* @param contentFontType
*/
public void setContentFontType(String contentFontType) {
this.contentFontType = contentFontType;
}
/**
* 设置正文字号.
* @param contentFontSize
*/
public void setContentFontSize(short contentFontSize) {
this.contentFontSize = contentFontSize;
}
/**
* 设置float类型数据小数位 默认.00
* @param doubleDecimal 如 ".00"
*/
public void setDoubleDecimal(String doubleDecimal) {
this.doubleDecimal = doubleDecimal;
}
/**
* 设置doubel类型数据小数位 默认.00
* @param floatDecimalFormat 如 ".00
*/
public void setFloatDecimalFormat(DecimalFormat floatDecimalFormat) {
this.floatDecimalFormat = floatDecimalFormat;
}
/**
* 设置列的公式
* @param colFormula 存储i-1列的公式 涉及到的行号使用@替换 如A@+B@
*/
public void setColFormula(String[] colFormula) {
this.colFormula = colFormula;
}
/**
* 写excel.
* @param titleColumn 对应bean的属性名
* @param titleName excel要导出的表名
* @param titleSize 列宽
* @param dataList 数据
*/
public void wirteExcel(String titleColumn[],String titleName[],int titleSize[],List dataList){
//添加Worksheet（不添加sheet时生成的xls文件打开时会报错)
Sheet sheet = workbook.createSheet(this.sheetName);
//新建文件
OutputStream out = null;
try {
if(fileDir!=null){
//有文件路径
out = new FileOutputStream(fileDir);
}else{
//否则，直接写到输出流中
out = response.getOutputStream();
fileName = fileName+".xls";
response.setContentType("application/x-msdownload");
response.setHeader("Content-Disposition", "attachment; filename="
+ URLEncoder.encode(fileName, "UTF-8"));
}
//写入excel的表头
Row titleNameRow = workbook.getSheet(sheetName).createRow(0);
//设置样式
HSSFCellStyle titleStyle = workbook.createCellStyle();
titleStyle = (HSSFCellStyle) setFontAndBorder(titleStyle, titleFontType, (short) titleFontSize);
titleStyle = (HSSFCellStyle) setColor(titleStyle, titleBackColor, (short)10);
for(int i = 0;i < titleName.length;i++){
sheet.setColumnWidth(i, titleSize[i]*256); //设置宽度
Cell cell = titleNameRow.createCell(i);
cell.setCellStyle(titleStyle);
cell.setCellValue(titleName[i].toString());
}
//为表头添加自动筛选
if(!"".equals(address)){
CellRangeAddress c = (CellRangeAddress) CellRangeAddress.valueOf(address);
sheet.setAutoFilter(c);
}
//通过反射获取数据并写入到excel中
if(dataList!=null&&dataList.size()>0){
//设置样式
HSSFCellStyle dataStyle = workbook.createCellStyle();
titleStyle = (HSSFCellStyle) setFontAndBorder(titleStyle, contentFontType, (short) contentFontSize);
if(titleColumn.length>0){
for(int rowIndex = 1;rowIndex<=dataList.size();rowIndex++){
Object obj = dataList.get(rowIndex-1); //获得该对象
Class clsss = obj.getClass(); //获得该对对象的class实例
Row dataRow = workbook.getSheet(sheetName).createRow(rowIndex);
for(int columnIndex = 0;columnIndex测试如下：
实体bean:
package com.myssm.util.poi;
public class Man {
private String name;
private int sex;
private String idCard;
private float salary;
public Man(String name, int sex, String idCard, float salary) {
super();
this.name = name;
this.sex = sex;
this.idCard = idCard;
this.salary = salary;
}
public Man() {
super();
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getSex() {
return sex;
}
public void setSex(int sex) {
this.sex = sex;
}
public String getIdCard() {
return idCard;
}
public void setIdCard(String idCard) {
this.idCard = idCard;
}
public float getSalary() {
return salary;
}
public void setSalary(float salary) {
this.salary = salary;
}
}
package com.myssm.util.poi;
import java.util.ArrayList;
import java.util.List;
public class Test {
public static void main(String[] args) {
PoiExcelExport pee = new PoiExcelExport("E:/test.xls","sheet1");
//数据
List dataList = new ArrayList();
Man man1 = new Man("张三",20,"男",(float)10000.8);
Man man2 = new Man("李四",21,"男",(float)11000.8);
Man man3 = new Man("王五",22,"女",(float)1200.8);
Man man4 = new Man("赵六",23,"男",(float)13000.8);
Man man5 = new Man("田七",24,"男",(float)14000.8);
Man man6 = new Man();
man6.setName("老八");
dataList.add(man1);dataList.add(man2);dataList.add(man3);dataList.add(man4);dataList.add(man5);
dataList.add(man6);
//调用
String titleColumn[] = {"name","sex","idCard","salary",""};
String titleName[] = {"姓名","性别","身份证号","月薪","年薪"};
int titleSize[] = {13,13,13,13,13};
//其他设置 set方法可全不调用
String colFormula[] = new String[5];
colFormula[4] = "D@*12"; //设置第5列的公式
pee.setColFormula(colFormula);
pee.setAddress("A:D"); //自动筛选
pee.wirteExcel(titleColumn, titleName, titleSize, dataList);
}
}