java web poi如何按查询结果导出相应的Excel最好有相应代码实例
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发布时间:2022-04-27 02:10
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package com.aerolink.aocs.util.fileUtil;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Calendar;
import java.util.Date;
//import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFCellStyle;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class WriteExcelNew {
/**
* Excel文件
*/
private XSSFWorkbook wb = null;
/**
* 输出Excel文件中的表对象
*/
private XSSFSheet sheet = null;
/**
* 输出文件流
*/
private FileOutputStream fileOut = null;
/**
* 输出文件名用户自定义
*/
private String outputFilename = null;
/**
* 单元格样式
*/
private XSSFCellStyle cellStyle = null;
// private String newsheet = null; //输出Excel文件中的表名用户自定义
/**
* 行
*/
private XSSFRow row=null;
/**
*
*/
private int rowNumber=-1;
/**
* @param outputFilename
* @param newsheet
*/
public WriteExcelNew(String outputFilename, String newsheet) {
wb = new XSSFWorkbook();
//wb.setSheetName(1, "qwe");//设置第一张表的名称
sheet = wb.createSheet(newsheet);
//sheet.setColumnWidth(1, 40);//第一行 列宽
this.outputFilename = outputFilename;
// this.newsheet = newsheet;
}
/**
* <p>
* Description:exportToExcelFile(short rownum,short cellnum,int value)方法:
* </p>
* <p>
* 将int数据写入Execl文件的表中
* </p>
*
* @param rownum
* @param cellnum
* @param value
*/
public void exportToExcelFile(int rownum, int cellnum, int value) {
if(rowNumber==-1){ //在poi3.8版本中,不这样做,只能写入最后一个单元格
rowNumber=rownum;
row = sheet.createRow(rownum);
}else if(rowNumber!=rownum){
rowNumber=rownum;
row = sheet.createRow(rownum);
}
//row.setHeight((short)50);//行高
XSSFCell cell = row.createCell(cellnum);
cell.setCellValue(value);
if(cellStyle==null){
setCellStyle("center","center","",false);
}
cell.setCellStyle(cellStyle);
}
/**
* <p>
* Description:exportToExcelFile(short rownum,short cellnum,String value)方法:
* </p>
* <p>
* 将String数据写入Execl文件的表中
* </p>
*
* @param rownum
* @param cellnum
* @param value
*/
public void exportToExcelFile(int rownum, int cellnum, String value) {
if(rowNumber==-1){ //在poi3.8版本中,不这样做,只能写入最后一个单元格
rowNumber=rownum;
row = sheet.createRow(rownum);
}else if(rowNumber!=rownum){
rowNumber=rownum;
row = sheet.createRow(rownum);
}
XSSFCell cell = row.createCell(cellnum);
cell.setCellValue(value);
if(cellStyle==null){
setCellStyle("center","center","",false);
}
cell.setCellStyle(cellStyle);
}
/**
* <p>
* Description:exportToExcelFile(short rownum,short cellnum,double value)方法:
* </p>
* <p>
* 将double数据写入Execl文件的表中
* </p>
*
* @param rownum
* @param cellnum
* @param value
*/
public void exportToExcelFile(int rownum, int cellnum, double value) {
if(rowNumber==-1){ //在poi3.8版本中,不这样做,只能写入最后一个单元格
rowNumber=rownum;
row = sheet.createRow(rownum);
}else if(rowNumber!=rownum){
rowNumber=rownum;
row = sheet.createRow(rownum);
}
XSSFCell cell = row.createCell(cellnum);
cell.setCellValue(value);
if(cellStyle==null){
setCellStyle("center","center","",false);
}
cell.setCellStyle(cellStyle);
}
/**
* <p>
* Description:exportToExcelFile(short rownum,short cellnum,boolean
* value)方法:
* </p>
* <p>
* 将boolean数据写入Execl文件的表中
* </p>
*
* @param rownum
* @param cellnum
* @param value
*/
public void exportToExcelFile(int rownum, int cellnum, boolean value) {
if(rowNumber==-1){ //在poi3.8版本中,不这样做,只能写入最后一个单元格
rowNumber=rownum;
row = sheet.createRow(rownum);
}else if(rowNumber!=rownum){
rowNumber=rownum;
row = sheet.createRow(rownum);
}
XSSFCell cell = row.createCell(cellnum);
cell.setCellValue(value);
if(cellStyle==null){
setCellStyle("center","center","",false);
}
cell.setCellStyle(cellStyle);
}
/**
* <p>
* Description:exportToExcelFile(short rownum,short cellnum,Date value)方法:
* </p>
* <p>
* 将Date数据写入Execl文件的表中
* </p>
*
* @param rownum
* @param cellnum
* @param value
*/
public void exportToExcelFile(int rownum, int cellnum, Date value) {
if(rowNumber==-1){ //在poi3.8版本中,不这样做,只能写入最后一个单元格
rowNumber=rownum;
row = sheet.createRow(rownum);
}else if(rowNumber!=rownum){
rowNumber=rownum;
row = sheet.createRow(rownum);
}
XSSFCell cell = row.createCell(cellnum);
cell.setCellValue(value);
if(cellStyle==null){
setCellStyle("center","center","",false);
}
cell.setCellStyle(cellStyle);
}
/**
* <p>
* Description:exportToExcelFile(short rownum,short cellnum,Calendar
* value)方法:
* </p>
* <p>
* 将Calendar数据写入Execl文件的表中
* </p>
*
* @param rownum
* @param cellnum
* @param value
*/
public void exportToExcelFile(int rownum, int cellnum, Calendar value) {
if(rowNumber==-1){ //在poi3.8版本中,不这样做,只能写入最后一个单元格
rowNumber=rownum;
row = sheet.createRow(rownum);
}else if(rowNumber!=rownum){
rowNumber=rownum;
row = sheet.createRow(rownum);
}
XSSFCell cell = row.createCell(cellnum);
cell.setCellValue(value);
if(cellStyle==null){
setCellStyle("center","center","",false);
}
cell.setCellStyle(cellStyle);
}
/**
* 合并单元格 2012-3-30 孙贵春 add
* @param startRow
* @param startCol
* @param endRow
* @param endCol
*/
public void setMergedRegion(int startRow,int startCol,int endRow,int endCol){
sheet.addMergedRegion(new CellRangeAddress(startRow,endRow,startCol,endCol));//这与1.5版本明显不同
}
/**
* 设置单元格样式
* @param a_pos
* @param v_pos
* @param border
* @param wrap
*/
public void setCellStyle(String a_pos,String v_pos,String border,Boolean wrap){
cellStyle=wb.createCellStyle();
//水平位置
if(a_pos.equals("center")){
cellStyle.setAlignment(CellStyle.ALIGN_CENTER);
}else if(a_pos.equals("left")){
cellStyle.setAlignment(CellStyle.ALIGN_LEFT);
}else{
cellStyle.setAlignment(CellStyle.ALIGN_RIGHT);
}
//垂直位置
if(v_pos.equals("center")){
cellStyle.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
}else if(v_pos.equals("top")){
cellStyle.setVerticalAlignment(CellStyle.VERTICAL_TOP);
}else{
cellStyle.setVerticalAlignment(CellStyle.VERTICAL_BOTTOM);
}
//边框
if(border.equals("thin")){
cellStyle.setBorderBottom(CellStyle.BORDER_THIN);
cellStyle.setBorderLeft(CellStyle.BORDER_THIN);
cellStyle.setBorderRight(CellStyle.BORDER_THIN);
cellStyle.setBorderTop(CellStyle.BORDER_THIN);
}else if(border.equals("double")){
cellStyle.setBorderBottom(CellStyle.BORDER_DOUBLE);
cellStyle.setBorderLeft(CellStyle.BORDER_DOUBLE);
cellStyle.setBorderRight(CellStyle.BORDER_DOUBLE);
cellStyle.setBorderTop(CellStyle.BORDER_DOUBLE);
}else if(border.equals("thick")){
cellStyle.setBorderBottom(CellStyle.BORDER_THICK);
cellStyle.setBorderLeft(CellStyle.BORDER_THICK);
cellStyle.setBorderRight(CellStyle.BORDER_THICK);
cellStyle.setBorderTop(CellStyle.BORDER_THICK);
}else if(border.equals("medium")){
cellStyle.setBorderBottom(CellStyle.BORDER_MEDIUM);
cellStyle.setBorderLeft(CellStyle.BORDER_MEDIUM);
cellStyle.setBorderRight(CellStyle.BORDER_MEDIUM);
cellStyle.setBorderTop(CellStyle.BORDER_MEDIUM);
}else if(border.equals("none")){
cellStyle.setBorderBottom(CellStyle.BORDER_NONE);
cellStyle.setBorderLeft(CellStyle.BORDER_NONE);
cellStyle.setBorderRight(CellStyle.BORDER_NONE);
cellStyle.setBorderTop(CellStyle.BORDER_NONE);
}else if(border.equals("dotted")){
cellStyle.setBorderBottom(CellStyle.BORDER_DOTTED);
cellStyle.setBorderLeft(CellStyle.BORDER_DOTTED);
cellStyle.setBorderRight(CellStyle.BORDER_DOTTED);
cellStyle.setBorderTop(CellStyle.BORDER_DOTTED);
}
//设置自动换行
cellStyle.setWrapText(wrap);
/*
cellStyle.setRotation((short)90);//设置单元格内文字旋转角度
XSSFFont font=wb.createFont();
font.setFamily(1);
font.setBold(true);
cellStyle.setFont(font);
*/
}
/**
* <p>
* Description: closeFileOut()方法:关闭文件输出流
* </p>
*
* @throws IOException
*/
public void closeFileOut() throws IOException {
fileOut = new FileOutputStream(outputFilename);
wb.write(fileOut);
fileOut.close();
}
/**
* <p>
* 测试方法
* </p>
*
* @param arg
*/
public static void main(String arg[]) {
try {
WriteExcelNew writeExcel = new WriteExcelNew("bak\\new.xls", "newsheet");
writeExcel.exportToExcelFile((short) 0, (short) 0, 99.99);
writeExcel.closeFileOut();
} catch (Exception e) {
System.out.println("Something Happen");
e.printStackTrace();
}
}
}追问有直接能跑的吗?