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package com.jald.rtms.base.util;
import java.io.OutputStream;
import java.lang.reflect.Method;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
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.ss.util.CellRangeAddress;
import org.apache.poi.ss.util.Region;
@SuppressWarnings("unchecked")
public class ExeclTool<T> {
private static ExeclTool instance;
private ExeclTool(){}
//单例
public static ExeclTool getInstance(){
if(null==instance)
instance = new ExeclTool();
return instance;
}
/**
* 导出方法
* @param title：标题
* @param herders 封装了ExeclBean类的list，用于循环输出表头信息
* @param ds：数据源，实现了Collection接口的任意集合类
* @param out：OutputStream对象
* @throws Exception
*/
public void exportExecl(String title,List<ExeclBean> herders,Collection<T> ds,OutputStream out) throws Exception{
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = workbook.createSheet(title);
sheet.setDefaultColumnWidth(15);
HSSFRow titleRow = sheet.createRow(0);
HSSFCell titleCell = titleRow.createCell(0);
titleCell.setCellValue(title);
titleCell.setCellStyle(getTitleStyle(workbook));
sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, herders.size()-1));
HSSFRow dateRow = sheet.createRow(1);
if(herders.size()==1){
HSSFCell dateCell = dateRow.createCell(0);
dateCell.setCellValue("制单日期："+DateUtil.formatDate(new Date(), "yyyy-MM-dd"));
}else{
dateRow.createCell(herders.size()-2).setCellValue("制单日期：");
dateRow.createCell(herders.size()-1).setCellValue(DateUtil.formatDate(new Date(), "yyyy-MM-dd"));
}
HSSFRow row = sheet.createRow(2);
HSSFCellStyle headerSytle = getHeaderStyle(workbook);
HSSFCellStyle contentSyle = getContentStyle(workbook);
HSSFFont font3 = workbook.createFont();
//循环表头，设置样式
for (int i = 0; i < herders.size(); i++) {
HSSFCell cell = row.createCell(i);
cell.setCellStyle(headerSytle);
HSSFRichTextString text = new HSSFRichTextString(herders.get(i).getName());
cell.setCellValue(text);
}
Iterator<T> it = ds.iterator();
int idx = 2;
String getMethod = "";
//循环表体
while(it.hasNext()){
idx++;
row = sheet.createRow(idx);
T t = it.next();
Class tClass = t.getClass();
String textValue = "";
for (int i = 0; i < herders.size(); i++) {
HSSFCell cell = row.createCell(i);
cell.setCellStyle(contentSyle);
getMethod = herders.get(i).getGetterMethod();
Map map=(Map) t;
Object value = map.get(getMethod);
if(null == value) value="";
//处理日期类型值的显示方法
if(value instanceof Date){
Date date = (Date)value;
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
textValue = sdf.format(date);
}else{
textValue = value.toString();
}
HSSFRichTextString richString = new HSSFRichTextString(textValue);
font3.setColor(HSSFColor.BLUE.index);
richString.applyFont(font3);
cell.setCellValue(richString);
}
}
workbook.write(out);
}
/**
* 导出方法
* @param title：标题
* @param herders 封装了ExeclBean类的list，用于循环输出表头信息
* @param ds：数据源，实现了Collection接口的任意集合类
* @param out：OutputStream对象
* @throws Exception
*/
public void exportExecl(String title,List<ExeclBean> herders,List<ExeclBean> herdersRs,Collection<T> ds,OutputStream out) throws Exception{
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = workbook.createSheet(title);
sheet.setDefaultColumnWidth(15);
HSSFRow titleRow = sheet.createRow(0);
HSSFCell titleCell = titleRow.createCell(0);
titleCell.setCellValue(title);
titleCell.setCellStyle(getTitleStyle(workbook));
sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, herders.size()-1));
HSSFRow dateRow = sheet.createRow(1);
if(herders.size()==1){
HSSFCell dateCell = dateRow.createCell(0);
dateCell.setCellValue("制单日期："+DateUtil.formatDate(new Date(), "yyyy-MM-dd"));
}else{
dateRow.createCell(herders.size()-2).setCellValue("制单日期：");
dateRow.createCell(herders.size()-1).setCellValue(DateUtil.formatDate(new Date(), "yyyy-MM-dd"));
}
//合并表头
HSSFRow row1 = sheet.createRow(2);
int b=0;
for (int i = 0; i <herdersRs.size(); i++) {
HSSFCell cell_1 = row1.createCell(b);
cell_1.setCellValue(herdersRs.get(i).getName());
cell_1.setCellStyle(getHeaderStyle(workbook));
if (herdersRs.get(i).getColspan()>1) {
for (int j = 0; j < herdersRs.get(i).getColspan(); j++) {
HSSFCell cell_2 = row1.createCell(b+j+1);
cell_2.setCellStyle(getHeaderStyle(workbook));
}
}
int a=b+herdersRs.get(i).getColspan()-1;
CellRangeAddress cra=new CellRangeAddress(2, 2,b, a);
//在sheet里增加合并单元格
sheet.addMergedRegion(cra);
b=b+herdersRs.get(i).getColspan();
}
HSSFRow row = sheet.createRow(3);
HSSFCellStyle headerSytle = getHeaderStyle(workbook);
HSSFCellStyle contentSyle = getContentStyle(workbook);
HSSFFont font3 = workbook.createFont();
//循环表头，设置样式
for (int i = 0; i < herders.size(); i++) {
HSSFCell cell = row.createCell(i);
cell.setCellStyle(headerSytle);
HSSFRichTextString text = new HSSFRichTextString(herders.get(i).getName());
cell.setCellValue(text);
}
Iterator<T> it = ds.iterator();
int idx = 3;
String getMethod = "";
//循环表体
while(it.hasNext()){
idx++;
row = sheet.createRow(idx);
T t = it.next();
Class tClass = t.getClass();
String textValue = "";
for (int i = 0; i < herders.size(); i++) {
HSSFCell cell = row.createCell(i);
cell.setCellStyle(contentSyle);
getMethod = herders.get(i).getGetterMethod();
Map map=(Map) t;
Object value = map.get(getMethod);
if(null == value) value="";
//处理日期类型值的显示方法
if(value instanceof Date){
Date date = (Date)value;
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
textValue = sdf.format(date);
}else{
textValue = value.toString();
}
HSSFRichTextString richString = new HSSFRichTextString(textValue);
font3.setColor(HSSFColor.BLUE.index);
richString.applyFont(font3);
cell.setCellValue(richString);
}
}
workbook.write(out);
}
public void exportTest(String fileName, List<Object[]> dataset, OutputStream out)
throws Exception
{
System.out.println(dataset);
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = wb.createSheet(fileName);
sheet.setDefaultColumnWidth(15);
HSSFRow titleRow = sheet.createRow(0);
HSSFCell titleCell = titleRow.createCell(0);
titleCell.setCellValue(fileName);
titleCell.setCellStyle(getTitleStyle(wb));
sheet.addMergedRegion(new CellRangeAddress(0, 0, 0,
dataset.get(0).length-1));
HSSFRow dateRow = sheet.createRow(1);
if (dataset.get(0).length == 1) {
HSSFCell dateCell = dateRow.createCell(0);
dateCell.setCellValue("制单日期："+DateUtil.formatDate(new Date(), "yyyy-MM-dd"));
} else {
dateRow.createCell(dataset.get(0).length-2).setCellValue("制单日期：");
dateRow.createCell(dataset.get(0).length-1).setCellValue(DateUtil.formatDate(new Date(), "yyyy-MM-dd"));
}
HSSFRow row = sheet.createRow(2);
HSSFCellStyle style = wb.createCellStyle();
style.setAlignment((short)2);
HSSFCell cell = null;
for (int i = 0; i < dataset.size(); i++) {
Object[] aa = (Object[])dataset.get(i);
row = sheet.createRow(i + 3);
if (i==0) {
for (int j = 0; j < aa.length; j++) {
cell = row.createCell(j);
cell.setCellStyle(getHeaderStyle(wb));
cell.setCellValue(String.valueOf(aa[j]));
}
}
else{
for (int j = 0; j < aa.length; j++) {
cell = row.createCell(j);
cell.setCellStyle(getContentStyle(wb));
cell.setCellValue(String.valueOf(aa[j]));
}
}
}
wb.write(out);
}
/**
* 导出方法
* @param title：标题
* @param herders 封装了ExeclBean类的list，用于循环输出表头信息
* @param ds：数据源，实现了Collection接口的任意集合类
* @param out：OutputStream对象
* @throws Exception
*/
public void exportExecl(String title,List<ExeclBean> herders,Collection<T> ds,Map<String, String> others,OutputStream out) throws Exception{
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = workbook.createSheet(title);
sheet.setDefaultColumnWidth(15);
HSSFRow titleRow = sheet.createRow(0);
HSSFCell titleCell = titleRow.createCell(0);
titleCell.setCellValue(title);
titleCell.setCellStyle(getTitleStyle(workbook));
sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, herders.size()-1));
HSSFRow dateRow = sheet.createRow(1);
if(herders.size()==1){
HSSFCell dateCell = dateRow.createCell(0);
// dateCell.setCellValue("制表日期："+Tool.stringOfCnDate());
}else{
dateRow.createCell(herders.size()-2).setCellValue("制表日期：");
// dateRow.createCell(herders.size()-1).setCellValue(Tool.stringOfCnDate());
}
HSSFRow row = sheet.createRow(2);
HSSFCellStyle headerSytle = getHeaderStyle(workbook);
HSSFCellStyle contentSyle = getContentStyle(workbook);
//循环表头，设置样式
for (int i = 0; i < herders.size(); i++) {
HSSFCell cell = row.createCell(i);
cell.setCellStyle(headerSytle);
HSSFRichTextString text = new HSSFRichTextString(herders.get(i).getName());
cell.setCellValue(text);
}
Iterator<T> it = ds.iterator();
int idx = 2;
String getMethod = "";
//循环表体
while(it.hasNext()){
idx++;
row = sheet.createRow(idx);
T t = it.next();
Class tClass = t.getClass();
String textValue = "";
for (int i = 0; i < herders.size(); i++) {
HSSFCell cell = row.createCell(i);
cell.setCellStyle(contentSyle);
getMethod = herders.get(i).getGetterMethod();
//通过反射得到get方法
Method getter = tClass.getMethod(getMethod, null);
//通过反射执行get方法
Object value = getter.invoke(t, null);
if(null == value) value="";
//处理日期类型值的显示方法
if(value instanceof Date){
Date date = (Date)value;
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
textValue = sdf.format(date);
}else{
textValue = value.toString();
}
//处理数字类型值的显示方法
Pattern p = Pattern.compile("^\\d+(\\.\\d+)?$");
Matcher matcher = p.matcher(textValue);
if (!getter.getReturnType().getName().equals("java.lang.String") && matcher.matches()) {
// 是数字当作double处理
/*BigDecimal b=new BigDecimal(textValue);
double bb=b.setScale(2,BigDecimal.ROUND_HALF_UP).doubleValue();
cell.setCellValue(bb); */
DecimalFormat df = new DecimalFormat("#.00");
String aa=df.format(Double.parseDouble(textValue));
if(aa.indexOf(".")==0){
aa="0"+aa;
}
if(aa.equals(".00")){
aa="0.00";
}
cell.setCellValue(Double.valueOf(aa));
} else {
HSSFRichTextString richString = new HSSFRichTextString(textValue);
HSSFFont font3 = workbook.createFont();
font3.setColor(HSSFColor.BLUE.index);
richString.applyFont(font3);
cell.setCellValue(richString);
}
}
}
idx++;
Iterator<String> oit = others.keySet().iterator();
while(oit.hasNext()){
idx++;
String key = oit.next();
String value= others.get(key);
row = sheet.createRow(idx);
HSSFCell keyCell = row.createCell(0);
keyCell.setCellValue(key);
HSSFCell valueCell = row.createCell(1);
valueCell.setCellValue(value);
}
//向outputstream对象中输出
workbook.write(out);
}
//设置表头样式，可自定义
public HSSFCellStyle getHeaderStyle(HSSFWorkbook workbook){
HSSFCellStyle style = workbook.createCellStyle();
style.setFillForegroundColor(HSSFColor.SKY_BLUE.index);
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
HSSFFont font = workbook.createFont();
font.setColor(HSSFColor.VIOLET.index);
font.setFontHeightInPoints((short) 12);
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
style.setFont(font);
return style;
}
public HSSFCellStyle getTitleStyle(HSSFWorkbook workbook){
HSSFCellStyle style = workbook.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
HSSFFont font = workbook.createFont();
font.setColor(HSSFColor.BLACK.index);
font.setFontHeightInPoints((short) 16);
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
style.setFont(font);
return style;
}
//设置表体样式，可自定义
public HSSFCellStyle getContentStyle(HSSFWorkbook workbook){
HSSFCellStyle style2 = workbook.createCellStyle();
style2.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index);
style2.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style2.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style2.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style2.setBorderRight(HSSFCellStyle.BORDER_THIN);
style2.setBorderTop(HSSFCellStyle.BORDER_THIN);
style2.setAlignment(HSSFCellStyle.ALIGN_CENTER);
style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
HSSFFont font2 = workbook.createFont();
font2.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
style2.setFont(font2);
return style2;
}
}
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原文地址：http://www.cnblogs.com/liuhaixu/p/5207333.html
