Java-POI-sxssfWorkbook实例

package com.herdsric.excel.create;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.math.BigDecimal;

import java.util.List;

import java.util.Map;

import org.apache.logging.log4j.LogManager;

import org.apache.logging.log4j.Logger;

import org.apache.poi.ss.usermodel.Cell;

import org.apache.poi.ss.usermodel.CellStyle;

import org.apache.poi.ss.usermodel.DataFormat;

import org.apache.poi.ss.usermodel.Font;

import org.apache.poi.ss.usermodel.Row;

import org.apache.poi.ss.usermodel.Sheet;

import org.apache.poi.xssf.streaming.SXSSFWorkbook;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import com.common.type.NumberUtil;

public class ExcelCreateBigRecord {

private static Logger logger = LogManager.getLogger(ExcelCreateBigRecord.class.getName());

private SXSSFWorkbook sxssfWorkbook;

private CellStyle noramlStyle;

private CellStyle formatStyle1;

private CellStyle formatStyle2;

public ExcelCreateBigRecord(InputStream excelIs){

try {

XSSFWorkbook workbook = new XSSFWorkbook(excelIs);

this.sxssfWorkbook = new SXSSFWorkbook(workbook, 100);

this.noramlStyle = this.sxssfWorkbook.createCellStyle();

this.formatStyle1 = this.sxssfWorkbook.createCellStyle();

this.formatStyle2 = this.sxssfWorkbook.createCellStyle();

this.setNormalStyle();

this.setFormatStyle1();

this.setFormatStyle2();

} catch (IOException e) {

logger.error("创建sxssfWorkbook错误:"+e.getMessage());

}

}

private void setFormatStyle1(){

DataFormat df = this.sxssfWorkbook.createDataFormat();

this.formatStyle1.setDataFormat(df.getFormat("#,#0.00"));

}

private void setFormatStyle2(){

DataFormat df = this.sxssfWorkbook.createDataFormat();

this.formatStyle2.setDataFormat(df.getFormat("@"));

}

private void setNormalStyle(){

Font font = this.sxssfWorkbook.createFont();

font.setFontName("黑体");

font.setFontHeightInPoints((short) 10);

this.noramlStyle.setFont(font);

this.formatStyle1.setFont(font);

this.formatStyle2.setFont(font);

}

public void createWorkBook(

List<Map<String,Object>> recordList,

int sheetNum,

int firstRow) throws IOException{

Sheet sheet = this.sxssfWorkbook.getSheetAt(sheetNum);

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

Row row = sheet.createRow(i+firstRow);

Map<String,Object> rowMap = recordList.get(i);

for(int j = 0; j < rowMap.size(); j++){

Cell cell = row.createCell(j);

Object celVal = rowMap.get("e"+(j+1));

this.setCellValue(cell, celVal);

}

}

}

public void removeSheet(int sheetNum){

this.sxssfWorkbook.removeSheetAt(sheetNum);

}

public void outWrite(OutputStream out){

try {

this.sxssfWorkbook.write(out);

} catch (IOException e) {

logger.error("sxssfWorkbook输出错误:"+e.getMessage());

}

}

private void setCellValue(Cell cell,Object celVal){

if(celVal == null){

cell.setCellValue("");

cell.setCellStyle(this.noramlStyle);

}else if(celVal.toString().indexOf("mil") != -1){

String cel = celVal.toString().replaceAll("mil", "").trim();

if(NumberUtil.isNumeric(cel)){

cell.setCellValue(new BigDecimal(cel).doubleValue());

cell.setCellStyle(this.formatStyle1);

}else{

cell.setCellValue(cel);

cell.setCellStyle(this.noramlStyle);

}

}else if(NumberUtil.isNumeric(celVal.toString().trim())){

cell.setCellValue(new BigDecimal(celVal.toString().trim()).doubleValue());

cell.setCellStyle(this.formatStyle1);

}else{

cell.setCellValue(celVal.toString().replaceAll("cus", ""));

cell.setCellStyle(this.formatStyle2);

}

}

}