使用POI操作EXECL做数据的导入与导出

 使用POI操作EXECL做数据的导入与导出            一: 所需JAR包       poi-3.9-20121203.jar      poi-ooxml-3.9-20121203.jar      poi-ooxml-schemas-3.9-20121203.jar   二:调用    1 导入       List<EpsEnterprise> epsList = excelService.importExcel(importSetInfo);    2 导出    excelService.exportExcel(setInfo); POIExcelServicepackage com.wonders.framework.component.execl.service;import java.io.IOException;import java.util.List;import com.wonders.framework.component.execl.entity.bo.ExportSetInfo;import com.wonders.framework.component.execl.entity.bo.ImportSetInfo;public interface POIExcelService {// 字段类型——日期型public final int FIELD_DATE_TYPE = 1;// 字段类型——数据字典类型public final int FIELD_DIC_TYPE = 0;public <T> List<T> importExcel(ImportSetInfo setInfo);public void exportExcel(ExportSetInfo setInfo) throws IOException,IllegalArgumentException, IllegalAccessException;}       POIExcelServiceImpl       ImportSetInfo  setInfo  数据导入对象       ExportSetInfo  setInfo  数据导出对象       package com.wonders.framework.component.execl.service.impl;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.text.DecimalFormat;import java.text.ParseException;import java.util.ArrayList;import java.util.Date;import java.util.List;import java.util.Map;import org.apache.commons.lang.StringUtils;import org.apache.log4j.Logger;import org.apache.poi.hssf.usermodel.HSSFDateUtil;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.Font;import org.apache.poi.ss.usermodel.IndexedColors;import org.apache.poi.ss.usermodel.Row;import org.apache.poi.ss.usermodel.Sheet;import org.apache.poi.ss.usermodel.Workbook;import org.apache.poi.xssf.usermodel.XSSFWorkbook;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Component;import com.wonders.framework.component.execl.entity.bo.ExportSetInfo;import com.wonders.framework.component.execl.entity.bo.ImportSetInfo;import com.wonders.framework.component.execl.service.POIExcelService;import com.wonders.framework.dictionary.service.DictionaryService;import com.wonders.framework.dictionary.service.impl.DictionaryServiceImpl;import com.wonders.framework.util.DateUtil;import com.wonders.framework.util.ReflectionUtils;@Component("excelService")public class POIExcelServiceImpl implements POIExcelService {/** 总行数 */private int totalRows = 0;/** 总列数 */private int totalCells = 0;// 设置读excel的起始行数private final int READ_BEGIN_ROW = 1;// 设置读excel的起始列数private final int READ_BEGIN_CELL = 1;// 设置写excel的起始行数private final int WRITE_BEGIN_ROW = 1;// 设置写excel的起始列数private final int WRITE_BEGIN_CELL = 0;// 与2003的兼容// private boolean isExcel2003 = true;// 内容行样式private static CellStyle contentStyle;// 内容行字体private static Font contentFont;private Workbook wb;@Autowiredprivate DictionaryService dictionaryService;private static Logger logger = Logger.getLogger(DictionaryServiceImpl.class.getName());/** *//** 构造方法 */public POIExcelServiceImpl() {}private void importInit(String fileName) {init(fileName);}private void init(String fileName) {File file = new File(fileName);/** 根据版本选择创建Workbook的方式 */try {wb = fileName.matches("^.+\\.(?i)(xlsx)$") ? new XSSFWorkbook(new FileInputStream(file)) : new HSSFWorkbook(new FileInputStream(file));} catch (FileNotFoundException e) {logger.error(e.getMessage());e.printStackTrace();} catch (IOException e) {logger.error(e.getMessage());e.printStackTrace();}}private void exportInit(String fileName) {init(fileName);contentStyle = wb.createCellStyle();contentFont = wb.createFont();initContentCellStyle();initContentFont();}/*** 校验文件** @param fileName* @return*/public String checkExcelFile(String fileName) {/** *//** 检查文件名是否为空或者是否是Excel格式的文件 */if (fileName == null || !fileName.matches("^.+\\.(?i)((xls)|(xlsx))$")) {return "不是合法的excel文件！";}/** 检查文件是否存在 */File file = new File(fileName);if (file == null || !file.exists()) {return "文件不存在！";}return null;}/*** <ul>* <li>Description:[根据文件名读取excel文件]</li>* <ul>** @param fileName* @return* @throws Exception*/public <T> List<T> importExcel(ImportSetInfo setInfo) {importInit(setInfo.getFileName());List<T> dataLst = new ArrayList<T>();/** 得到第一个shell */Sheet sheet = wb.getSheetAt(0);this.totalRows = sheet.getPhysicalNumberOfRows();if (this.totalRows >= 1 && sheet.getRow(0) != null) {this.totalCells = sheet.getRow(0).getPhysicalNumberOfCells();}String[] fieldNames = setInfo.getFieldNames();Map<String, Integer> fieldTypes = setInfo.getFieldTypes();Map<String, String> dicTypes = setInfo.getDicTypes();/** 循环Excel的行 */for (int r = READ_BEGIN_ROW; r < this.totalRows; r++) {Row row = sheet.getRow(r);if (row == null) {continue;}int cells = row.getPhysicalNumberOfCells();Class<?> clz = setInfo.getClz();Object obj = null;try {obj = clz.newInstance();} catch (InstantiationException e1) {logger.error(e1.getMessage());e1.printStackTrace();} catch (IllegalAccessException e1) {logger.error(e1.getMessage());e1.printStackTrace();}/** *//** 循环Excel的列 */for (short i = 0; i < cells; i++) {Cell cell = row.getCell(i);String cellValue = "";if (cell == null) {// continue;}/** 处理数字型的,自动去零 */if (Cell.CELL_TYPE_NUMERIC == cell.getCellType()) {/** *//** 在excel里,日期也是数字,在此要进行判断 */if (HSSFDateUtil.isCellDateFormatted(cell)) {cellValue = getRightStr(cell.getDateCellValue() + "");} else {cellValue = getRightStr(cell.getNumericCellValue() + "");}}/** *//** 处理字符串型 */else if (Cell.CELL_TYPE_STRING == cell.getCellType()) {cellValue = cell.getStringCellValue();}/** *//** 处理布尔型 */else if (Cell.CELL_TYPE_BOOLEAN == cell.getCellType()) {cellValue = cell.getBooleanCellValue() + "";}/** *//** 其它的,非以上几种数据类型 */else {cellValue = null;}if(cellValue==null||cellValue.equals("")){continue;}Object value = cellValue;if (fieldTypes != null) {Integer fieldType = fieldTypes.get(fieldNames[i]);// 以下是类型转换if (fieldType != null && this.FIELD_DIC_TYPE == fieldType) {value = dictionaryService.getKey(dicTypes.get(fieldNames[i]), cellValue);} else if (fieldType != null&& this.FIELD_DATE_TYPE == fieldType) {try {value = DateUtil.parse(cellValue, "yyyy-MM-dd");} catch (ParseException e) {logger.error(e.getMessage());e.printStackTrace();}} else {// TODO}}ReflectionUtils.invokeSetterMethod(obj, fieldNames[i], value);}dataLst.add((T)obj);}return dataLst;}/** *//*** <ul>* <li>Description:[得到总行数]</li>* <ul>** @return*/public int getTotalRows() {return totalRows;}/** *//*** <ul>* <li>Description:[得到总列数]</li>* <ul>** @return*/public int getTotalCells() {return totalCells;}/*** <ul>* <li>Description:[正确地处理整数后自动加零的情况]</li>* <li>Created by [Huyvanpull] [Jan 20, 2010]</li>* <li>Midified by [modifier] [modified time]</li>* <ul>** @param sNum* @return*/private String getRightStr(String sNum) {DecimalFormat decimalFormat = new DecimalFormat("#.000000");String resultStr = decimalFormat.format(new Double(sNum));if (resultStr.matches("^[-+]?\\d+\\.[0]+$")) {resultStr = resultStr.substring(0, resultStr.indexOf("."));}return resultStr;}/*** @throws IllegalAccessException* @throws IllegalArgumentException* @Description: 将Map里的集合对象数据输出Excel数据流*/@SuppressWarnings({ "unchecked" })public void exportExcel(ExportSetInfo setInfo) throws IOException,IllegalArgumentException, IllegalAccessException {String fileName = setInfo.getFileTemplateName();exportInit(fileName);List<?> dataList = setInfo.getDataList();String[] fieldNames = setInfo.getFieldNames();Map<String, Integer> fieldTypes = setInfo.getFieldTypes();Map<String, String> dicTypes = setInfo.getDicTypes();// String[] sheetNames = new String[setInfo.getFieldNames().size()];/** int sheetNameNum = 0; for (Entry<String, Integer> entry : fieldNames)* { sheetNames[sheetNameNum] = entry.getKey(); sheetNameNum++; }*/// HSSFSheet[] sheets = createSheets(setInfo.getFieldNames().size(),// sheetNames);// int sheetNum = 0;Sheet sheet = wb.getSheetAt(0);int rowNum = WRITE_BEGIN_ROW;for (Object obj : dataList) {Row contentRow = sheet.createRow(rowNum);contentRow.setHeight((short) 300);Cell[] cells = createCells(contentRow, fieldNames.length);if (fieldNames != null) {for (int i = 0, count = fieldNames.length; i < count; i++) {Object value = ReflectionUtils.invokeGetterMethod(obj,fieldNames[i]);if (fieldTypes != null) {Integer fieldType = fieldTypes.get(fieldNames[i]);// 以下是类型转换if (fieldType != null&& this.FIELD_DIC_TYPE == fieldType) {if(!org.springframework.util.StringUtils.isEmpty(value)){value = dictionaryService.getValue(dicTypes.get(fieldNames[i]),(String) value);}} else if (fieldType != null&& this.FIELD_DATE_TYPE == fieldType) {if(!org.springframework.util.StringUtils.isEmpty(value)){value = DateUtil.format((Date) value, "yyyy-MM-dd");}} else {// TODO}}cells[i].setCellValue(value == null ? "" : value.toString());}rowNum++;}// adjustColumnSize(sheets, sheetNum, fieldNames); // 自动调整列宽// sheetNum++;}String outFileName = setInfo.getOutFileName();if (outFileName != null && !StringUtils.isEmpty(outFileName)) {FileOutputStream out = new FileOutputStream(outFileName);wb.write(out);}}/*** @Description: 初始化内容行样式*/private static void initContentCellStyle() {// contentStyle.setAlignment(CellStyle.ALIGN_CENTER);// contentStyle.setVerticalAlignment(CellStyle.VERTICAL_CENTER);contentStyle.setFont(contentFont);// contentStyle.setBorderTop(CellStyle.BORDER_THIN);// contentStyle.setBorderBottom(CellStyle.BORDER_THIN);// contentStyle.setBorderLeft(CellStyle.BORDER_THIN);// contentStyle.setBorderRight(CellStyle.BORDER_THIN);// contentStyle.setTopBorderColor(IndexedColors.BLUE.index);// contentStyle.setBottomBorderColor(IndexedColors.BLUE.index);// contentStyle.setLeftBorderColor(IndexedColors.BLUE.index);// contentStyle.setRightBorderColor(IndexedColors.BLUE.index);contentStyle.setWrapText(true); // 字段换行}/*** @Description: 初始化内容行字体*/private static void initContentFont() {contentFont.setFontName("宋体");contentFont.setFontHeightInPoints((short) 10);contentFont.setBoldweight(Font.BOLDWEIGHT_NORMAL);contentFont.setCharSet(Font.DEFAULT_CHARSET);//contentFont.setColor(IndexedColors.BLUE_GREY.index);}/*** @Description: 创建所有的Sheet*/// private Sheet[] createSheets(int num, String[] names) {// Sheet[] sheets = new Sheet[num];// for (int i = 0; i < num; i++) {// sheets[i] = wb.createSheet(names[i]);// }// return sheets;// }/*** @Description: 创建内容行的每一列*/private static Cell[] createCells(Row contentRow, int num) {Cell[] cells = new Cell[num];for (int i = 0, len = cells.length; i < len; i++) {cells[i] = contentRow.createCell(i);cells[i].setCellStyle(contentStyle);}return cells;}}

package com.wonders.framework.component.execl.entity.bo;

import java.util.Map;

/**
* @Description: 封装Excel导入的设置信息
*/
public class ImportSetInfo {
private String fileName;
// 字段名称
private String[] fieldNames;
// 字段类型
private Map<String,Integer> fieldTypes;
// 数据字典类型
private Map<String,String> dicTypes;
// 导入的数据应转换的对象类型
private Class<?> clz;

public String getFileName() {
return fileName;
}

public void setFileName(String fileName) {
this.fileName = fileName;
}

public String[] getFieldNames() {
return fieldNames;
}

public void setFieldNames(String[] fieldNames) {
this.fieldNames = fieldNames;
}

public Map<String, Integer> getFieldTypes() {
return fieldTypes;
}

public void setFieldTypes(Map<String, Integer> fieldTypes) {
this.fieldTypes = fieldTypes;
}

public Map<String, String> getDicTypes() {
return dicTypes;
}

public void setDicTypes(Map<String, String> dicTypes) {
this.dicTypes = dicTypes;
}

public Class<?> getClz() {
return clz;
}

public void setClz(Class<?> clz) {
this.clz = clz;
}

}

package com.wonders.framework.component.execl.entity.bo;import java.util.List;import java.util.Map;/*** @Description: 封装Excel导出的设置信息*/public class ExportSetInfo {private List<?> dataList;//字段名称private String[]  fieldNames;//字段类型private Map<String,Integer> fieldTypes;//数据字典类型private Map<String,String> dicTypes;private String outFileName;private String fileTemplateName;public String getFileTemplateName() {return fileTemplateName;}public void setFileTemplateName(String fileTemplateName) {this.fileTemplateName = fileTemplateName;}public String getOutFileName() {return outFileName;}public void setOutFileName(String outFileName) {this.outFileName = outFileName;}public List<?> getDataList() {return dataList;}public String[] getFieldNames() {return fieldNames;}public void setFieldNames(String[] fieldNames) {this.fieldNames = fieldNames;}public Map<String, String> getDicTypes() {return dicTypes;}public Map<String, Integer> getFieldTypes() {return fieldTypes;}public void setFieldTypes(Map<String, Integer> fieldTypes) {this.fieldTypes = fieldTypes;}public void setDicTypes(Map<String, String> dicTypes) {this.dicTypes = dicTypes;}public void setDataList(List<?> dataList) {this.dataList = dataList;}}