封装poi导出篇

前言

先写的导入，以为导出会很简单，没想到导出的东西也不少，基于常用的几种样式和校验写了一个简单的导出，包括时间，数字，文字长度，下拉框，提示框校验，基础样式包括字体，字体颜色，背景颜色等功能，可以使用rgb，基本上满足了我的需求。

基础校验类

package cc.vvxtoys.vhelper.excelhelper.exporter;

import java.text.SimpleDateFormat;

import org.apache.poi.hssf.usermodel.DVConstraint;

import org.apache.poi.hssf.usermodel.HSSFDataValidation;

import org.apache.poi.hssf.usermodel.HSSFSheet;

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

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

import org.apache.poi.ss.usermodel.DataValidationConstraint.ValidationType;

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

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

import org.apache.poi.ss.util.CellRangeAddressList;

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

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

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

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

/**

 * @author vvxtoys

 * @date   2018年11月8日下午5:30:02

 * @Description: TODO

 * @version V1.0

 */

public class BaseValidation implements Validation{

	private int version;  //版本

	private Sheet sheet;

	private ValidationConfig config;

	public BaseValidation(ValidationConfig config){

		this.config = config;

	}

	@Override

	public DataValidation createPrompt(){

		if(version == 0){

			return xlsPrompt();

		}else{

			return xlsxPrompt();

		}

	}

	private HSSFDataValidation xlsPrompt(){

		CellRangeAddressList addressList = new CellRangeAddressList(config.getStartRow(), config.getEndRow(),

																	config.getStartCol(), config.getEndCol());

		DVConstraint dv = DVConstraint.createCustomFormulaConstraint("BB1");

		HSSFDataValidation dataValidation = new HSSFDataValidation(addressList, dv);

		dataValidation.setSuppressDropDownArrow(false);

		dataValidation.createPromptBox("输入提示", config.getPromptText());

		dataValidation.setShowPromptBox(true);

		return dataValidation;

	}

	private XSSFDataValidation xlsxPrompt(){

		XSSFDataValidationHelper help = new XSSFDataValidationHelper((XSSFSheet)sheet);

		CellRangeAddressList addressList = new CellRangeAddressList(config.getStartRow(), config.getEndRow(),

				config.getStartCol(), config.getEndCol());

		XSSFDataValidationConstraint dv = (XSSFDataValidationConstraint)help.createCustomConstraint("BB1");

		XSSFDataValidation validation = (XSSFDataValidation)help.createValidation(dv, addressList);

		validation.setSuppressDropDownArrow(false);

		validation.createPromptBox("输入提示",config.getPromptText());

		validation.setShowPromptBox(true);

		return validation;

	}

	@Override

	public DataValidation createDropDownBox(){

		if(version == 0){

			return xlsDropDownBox();

		}else{

			return xlsxDropDownBox();

		}

	}

	private HSSFDataValidation xlsDropDownBox(){

		CellRangeAddressList regions = new CellRangeAddressList(config.getStartRow(), config.getEndRow(),

				config.getStartCol(), config.getEndCol());

		DVConstraint constraint = DVConstraint.createExplicitListConstraint(config.getTextlist());

		HSSFDataValidation datavalidation = new HSSFDataValidation(regions,constraint);

		datavalidation.setSuppressDropDownArrow(false);

		datavalidation.createPromptBox("输入提示", config.getPromptText());

		datavalidation.setShowPromptBox(true);

		return datavalidation;

	}

	private XSSFDataValidation xlsxDropDownBox(){

		XSSFDataValidationHelper help = new XSSFDataValidationHelper((XSSFSheet)sheet);

		XSSFDataValidationConstraint dvConstraint= (XSSFDataValidationConstraint) help.createExplicitListConstraint(config.getTextlist());

		CellRangeAddressList addressList = new CellRangeAddressList(config.getStartRow(), config.getEndRow(),

				config.getStartCol(), config.getEndCol());

		XSSFDataValidation validation = (XSSFDataValidation) help.createValidation(

				dvConstraint, addressList);

		validation.setSuppressDropDownArrow(true);

		validation.createPromptBox("输入提示", config.getPromptText());

		validation.setShowPromptBox(true);

		return validation;

	}

	@Override

	public DataValidation createValidateTime(){

		if(version == 0){

			return xlsValidateTime();

		}else{

			return xlsxValidateTime();

		}

	}

	private HSSFDataValidation xlsValidateTime(){

		CellRangeAddressList addressList = new CellRangeAddressList(config.getStartRow(), config.getEndRow(),

				config.getStartCol(), config.getEndCol());

		DVConstraint dvConstraint = DVConstraint.createDateConstraint(DVConstraint.OperatorType.BETWEEN, config.getStartDate(),

				config.getEndDate(), config.getPattern());

		HSSFDataValidation dataValidation = new HSSFDataValidation(addressList, dvConstraint);

		dataValidation.setSuppressDropDownArrow(false);

		dataValidation.createPromptBox("输入提示",config.getPromptText());

		dataValidation.createErrorBox("日期格式错误提示", config.getErrorText());

		dataValidation.setShowPromptBox(true);

		return dataValidation;

	}

	private XSSFDataValidation xlsxValidateTime(){

		XSSFDataValidation validation = null;

		try{

			SimpleDateFormat sdf = new SimpleDateFormat(config.getPattern());

			XSSFDataValidationHelper help = new XSSFDataValidationHelper((XSSFSheet)sheet);

			CellRangeAddressList addressList = new CellRangeAddressList(config.getStartRow(), config.getEndRow(),

					config.getStartCol(), config.getEndCol());

			XSSFDataValidationConstraint dvConstraint=(XSSFDataValidationConstraint)

					help.createDateConstraint(DataValidationConstraint.OperatorType.BETWEEN,

							""+DateUtil.getExcelDate(sdf.parse(config.getStartDate())),

							""+DateUtil.getExcelDate(sdf.parse(config.getEndDate())), "");

			validation = (XSSFDataValidation) help.createValidation(

					dvConstraint, addressList);

			validation.createPromptBox("输入提示",config.getPromptText());

			validation.createErrorBox("日期格式错误提示",config.getErrorText());

			validation.setShowPromptBox(true);

			validation.setShowErrorBox(true);

			validation.setErrorStyle(0);

			sheet.addValidationData(validation);

		}catch(Exception e){

			e.printStackTrace();

		}

		return validation;

	}

	@Override

	public DataValidation createTextLength(){

		if(version == 0){

			return xlsTextLength();

		}else{

			return xlsxTextLength();

		}

	}

	private HSSFDataValidation xlsTextLength(){

		DVConstraint constraint = DVConstraint.createNumericConstraint(

	            DVConstraint.ValidationType.TEXT_LENGTH,

	            DVConstraint.OperatorType.BETWEEN, String.valueOf(config.getMinLen()), String.valueOf(config.getMaxLen()));

		CellRangeAddressList addressList = new CellRangeAddressList(config.getStartRow(), config.getEndRow(),

				config.getStartCol(), config.getEndCol());

		HSSFDataValidation dataValidation = new HSSFDataValidation(addressList, constraint);

		dataValidation.setSuppressDropDownArrow(false);

		dataValidation.createPromptBox("输入提示", config.getPromptText());

		// 设置输入错误提示信息

		dataValidation.createErrorBox("格式错误",config.getErrorText());

		dataValidation.setShowPromptBox(true);

		return dataValidation;

	}

	private XSSFDataValidation xlsxTextLength(){

		XSSFDataValidationHelper help = new XSSFDataValidationHelper((XSSFSheet)sheet);

		CellRangeAddressList addressList = new CellRangeAddressList(config.getStartRow(), config.getEndRow(),

				config.getStartCol(), config.getEndCol());

		XSSFDataValidationConstraint dvConstraint=(XSSFDataValidationConstraint)

		help.createNumericConstraint(ValidationType.TEXT_LENGTH, DataValidationConstraint.OperatorType.BETWEEN, String.valueOf(config.getMinLen()), String.valueOf(config.getMaxLen()));

		XSSFDataValidation validation = (XSSFDataValidation) help.createValidation(

                dvConstraint, addressList);

		validation.createPromptBox("输入提示", config.getPromptText());

		validation.createErrorBox("格式错误提示", config.getErrorText());

		validation.setShowPromptBox(true);

		validation.setShowErrorBox(true);

		return validation;

	}

	@Override

	public DataValidation createValidateNumber(){

		if(version == 0){

			return xlsValidateNumber();

		}else{

			return xlsxValidateNumber();

		}

	}

	private HSSFDataValidation xlsValidateNumber(){

		DVConstraint constraint = DVConstraint.createNumericConstraint(

	            DVConstraint.ValidationType.DECIMAL,

	            DVConstraint.OperatorType.BETWEEN, String.valueOf(config.getMin()), String.valueOf(config.getMax()));

		CellRangeAddressList addressList = new CellRangeAddressList(config.getStartRow(), config.getEndRow(),

				config.getStartCol(), config.getEndCol());

		HSSFDataValidation dataValidation = new HSSFDataValidation(addressList, constraint);

		dataValidation.createPromptBox("输入提示", config.getPromptText());

		dataValidation.createErrorBox("格式错误", config.getErrorText());

		dataValidation.setShowPromptBox(true);

		dataValidation.setShowErrorBox(true);

		return dataValidation;

	}

	private XSSFDataValidation xlsxValidateNumber(){

		XSSFDataValidationHelper help = new XSSFDataValidationHelper((XSSFSheet)sheet);

		CellRangeAddressList addressList = new CellRangeAddressList(config.getStartRow(), config.getEndRow(),

				config.getStartCol(), config.getEndCol());

		XSSFDataValidationConstraint dvConstraint=(XSSFDataValidationConstraint)

		help.createNumericConstraint(ValidationType.DECIMAL, DataValidationConstraint.OperatorType.BETWEEN, String.valueOf(config.getMin()), String.valueOf(config.getMax()));

		XSSFDataValidation validation = (XSSFDataValidation) help.createValidation(

                dvConstraint, addressList);

		validation.createPromptBox("输入提示", config.getPromptText());

		validation.createErrorBox("格式错误", config.getErrorText());

		validation.setShowPromptBox(true);

		validation.setShowErrorBox(true);

		return validation;

	}

	public void generatorValidation(){

		if(version == 0 && config.getEndRow() == 0){

			config.setEndRow(65535);

		}else if(version == 1 && config.getEndRow() == 0){

			config.setEndRow(1048575);

		}

		if(config.getCustomize()){

			addValidation(config.getDataValidation());

		}else{

			switch (config.getEv()) {

			case PROMPT:

				addValidation(createPrompt());

				break;

			case DROPDOWN:

				addValidation(createDropDownBox());

				break;

			case DATE:

				addValidation(createValidateTime());

				break;

			case LENGTH:

				addValidation(createTextLength());

				break;

			case NUMBER:

				addValidation(createValidateNumber());

				break;

			default:

				break;

			}

		}

	}

	public void setSheet(Sheet sheet){

		if(sheet instanceof HSSFSheet){

			this.version = 0;

			this.sheet = (HSSFSheet)sheet;

		}else if(sheet instanceof XSSFSheet){

			this.version = 1;

			this.sheet = (XSSFSheet)sheet;

		}

	}

	public void addValidation(DataValidation dataValidation){

		sheet.addValidationData(dataValidation);

	}

}

基础样式类

package cc.vvxtoys.vhelper.excelhelper.exporter;

import org.apache.poi.hssf.usermodel.HSSFCellStyle;

import org.apache.poi.hssf.usermodel.HSSFDataFormat;

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.hssf.util.HSSFColor.HSSFColorPredefined;

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

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

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

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

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

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

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

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

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

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

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

public class BaseStyle {

	private int version;

	private Workbook workbook;

	private StyleConfig sconfig;

	public BaseStyle(Workbook workbook,StyleConfig config) {

		if(workbook instanceof HSSFWorkbook){

			this.version = 0;

			this.workbook = workbook;

			this.sconfig = config;

		}else if(workbook instanceof XSSFWorkbook){

			version = 1;

			this.workbook = workbook;

			this.sconfig = config;

		}

	}

	/**

	 * @author vvxtoys

	 * @date   2018年11月13日下午3:38:58

	 * @Description: 调用优先级 rgb index

	 * @return

	 */

	public CellStyle generatorStyle(){

		if(sconfig.isOuter()){

			return sconfig.getCellStyle();

		}

		if(version == 0){

			HSSFCellStyle style = ((HSSFWorkbook)workbook).createCellStyle();

			Object bgColor = sconfig.getBackground();

			if(bgColor instanceof byte[]){

				byte[] bs = (byte[])bgColor;

				style.setFillForegroundColor(HSSFColorPredefined.WHITE.getIndex());

				HSSFPalette palette = ((HSSFWorkbook) workbook).getCustomPalette();

				palette.setColorAtIndex(HSSFColorPredefined.WHITE.getIndex(), bs[0], bs[1], bs[2]);

			}else{

				short bgIndex = (short)bgColor;

				if(bgIndex == -1){

					style.setFillForegroundColor(HSSFColorPredefined.GREY_40_PERCENT.getIndex());

				}else{

					style.setFillForegroundColor(bgIndex);

				}

			}

			style.setFillPattern(FillPatternType.SOLID_FOREGROUND);

			style.setBorderBottom(BorderStyle.THIN);

			style.setBorderLeft(BorderStyle.THIN);

			style.setBorderRight(BorderStyle.THIN);

			style.setBorderTop(BorderStyle.THIN);

			style.setAlignment(HorizontalAlignment.CENTER);

			HSSFDataFormat format = ((HSSFWorkbook)workbook).createDataFormat();

			style.setDataFormat(format.getFormat("@"));

			style.setWrapText(true);

			HSSFFont font = ((HSSFWorkbook)workbook).createFont();

			Object fColor = sconfig.getFontColor();

			if(fColor instanceof byte[]){

				byte[] frgb = (byte[])fColor;

				font.setColor(HSSFColorPredefined.BLACK.getIndex());

				style.setFillForegroundColor(HSSFColorPredefined.BLACK.getIndex());

				HSSFPalette palette1 = ((HSSFWorkbook) workbook).getCustomPalette();

				palette1.setColorAtIndex(HSSFColorPredefined.BLACK.getIndex(), frgb[0], frgb[1], frgb[2]);

			}else{

				short fIndex = (short)fColor;

				if(fIndex == -1){

					font.setColor(HSSFColorPredefined.BLACK.getIndex());

				}else{

					font.setColor(fIndex);

				}

			}

			font.setFontHeightInPoints(sconfig.getHeight());

			font.setFontName(sconfig.getFontName());

			font.setBold(sconfig.getBlob());

			style.setFont(font);

			return style;

		}else{

			XSSFCellStyle style = ((XSSFWorkbook)workbook).createCellStyle();

			Object bgColor = sconfig.getBackground();

			if(bgColor instanceof byte[]){

				byte[] rgb = (byte[])bgColor;

				XSSFColor color = new XSSFColor(rgb, new DefaultIndexedColorMap());

				style.setFillForegroundColor(color);

			}else{

				short bgIndex = (short)bgColor;

				if(bgIndex == -1){

					style.setFillForegroundColor(HSSFColorPredefined.GREY_40_PERCENT.getIndex());

				}else{

					style.setFillForegroundColor(bgIndex);

				}

			}

			style.setFillPattern(FillPatternType.SOLID_FOREGROUND);

			style.setBorderBottom(BorderStyle.THIN);

			style.setBorderLeft(BorderStyle.THIN);

			style.setBorderRight(BorderStyle.THIN);

			style.setBorderTop(BorderStyle.THIN);

			style.setAlignment(HorizontalAlignment.CENTER);

			style.setWrapText(true);

			XSSFDataFormat format = ((XSSFWorkbook)workbook).createDataFormat();

			style.setDataFormat(format.getFormat("@"));

			XSSFFont font = ((XSSFWorkbook)workbook).createFont();

			Object fColor = sconfig.getFontColor();

			if(fColor instanceof byte[]){

				byte[] frgb = (byte[])fColor;

				XSSFColor color1 = new XSSFColor(frgb,new DefaultIndexedColorMap());

				style.setFillForegroundColor(color1);

			}else{

				short fIndex = (short)fColor;

				if(fIndex == -1){

					font.setColor(HSSFColorPredefined.BLACK.getIndex());

				}else{

					font.setColor(fIndex);

				}

			}

			font.setFontHeightInPoints(sconfig.getHeight());

			font.setFontName(sconfig.getFontName());

			font.setBold(sconfig.getBlob());

			style.setFont(font);

			return style;

		}

	}

	public CellStyle getDefaultStyle(){

		if(version == 0){

			HSSFCellStyle style = ((HSSFWorkbook)workbook).createCellStyle();

			style.setBorderBottom(BorderStyle.THIN);

			style.setBorderLeft(BorderStyle.THIN);

			style.setBorderRight(BorderStyle.THIN);

			style.setBorderTop(BorderStyle.THIN);

			style.setAlignment(HorizontalAlignment.CENTER);

			HSSFDataFormat format = ((HSSFWorkbook)workbook).createDataFormat();

			style.setDataFormat(format.getFormat("@"));

			style.setWrapText(true);

			HSSFFont font = ((HSSFWorkbook)workbook).createFont();

			font.setFontHeightInPoints(sconfig.getHeight());

			font.setFontName(sconfig.getFontName());

			font.setBold(sconfig.getBlob());

			style.setFont(font);

			return style;

		}else{

			XSSFCellStyle style = ((XSSFWorkbook)workbook).createCellStyle();

			style.setBorderBottom(BorderStyle.THIN);

			style.setBorderLeft(BorderStyle.THIN);

			style.setBorderRight(BorderStyle.THIN);

			style.setBorderTop(BorderStyle.THIN);

			style.setAlignment(HorizontalAlignment.CENTER);

			style.setWrapText(true);

			XSSFDataFormat format = ((XSSFWorkbook)workbook).createDataFormat();

			style.setDataFormat(format.getFormat("@"));

			XSSFFont font = ((XSSFWorkbook)workbook).createFont();

			font.setFontHeightInPoints(sconfig.getHeight());

			font.setFontName(sconfig.getFontName());

			font.setBold(sconfig.getBlob());

			style.setFont(font);

			return style;

		}

	}

}

结语

导出代码量比较大，贴出来两个比较核心的类，完整项目地址为：https://gitee.com/vvxtoys/vhelper

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结语

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