POI读取Excel数据

所需jar包：

xmlbeans-2.3.0.jar

poi-ooxml-schemas-3.8-20120326.jar

poi-ooxml-3.8-20120326.jar

poi-3.8-20120326.jar

dom4j-1.6.1.jar

// 本例为本地路径的文件，如果是从服务器或者插件上转之后的file对象，需要通过一定手段进行转换，

提供一种参考：

File tempFile = File.createTempFile("random", suffix);
FileUtils.writeByteArrayToFile(tempFile, file.getBytes());

/**
 *
 */
package poi;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFCell;
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.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import domain.Param;

/**
 * @author liuyunlong
 */
public class ExcelPoi {

	/**
	 * @param args
	 * @throws IOException
	 */
	public static void main(String[] args) throws IOException {

		ExcelPoi excelPoi = new ExcelPoi();

		String fileDir = "D:\\excel\\params2.xls";
		int beginIndex = fileDir.lastIndexOf(".");
		int endIndex = fileDir.length();
		String suffix = fileDir.substring(beginIndex, endIndex);
		List<Param> paramList = new ArrayList<Param>();
		InputStream inputStream = new FileInputStream(fileDir);
		if (".xls".equals(suffix)) {
			paramList = excelPoi.readXls(inputStream);
		} else {
			paramList = excelPoi.readXlsx(inputStream);
		}
		for (int i = 0; i < paramList.size(); i++) {
			System.out.println("file suffix= "+ suffix +" and params=====" + paramList.get(i).toString());
		}
	}

	/**
	 * 后缀为.xlsx
	 *
	 * @param fileDir
	 * @throws IOException
	 */
	private List<Param> readXlsx(InputStream inputStream) throws IOException {
		XSSFWorkbook xssfWorkbook = new XSSFWorkbook(inputStream);
		List<Param> paramList = new ArrayList<Param>();

		// 循环工作表Sheet
		int sheetNumbers = xssfWorkbook.getNumberOfSheets();
		for (int numSheet = 0; numSheet < sheetNumbers; numSheet++) {
			XSSFSheet xssfSheet = xssfWorkbook.getSheetAt(numSheet);
			if (xssfSheet == null) {
				continue;
			}

			// 循环当前Sheet的行Row
			int rowNumbers = xssfSheet.getLastRowNum();
			for (int rowNum = 0; rowNum <= rowNumbers; rowNum++) {
				XSSFRow xssfRow = xssfSheet.getRow(rowNum);
				if (xssfRow == null) {
					continue;
				}

				// 循环当前Row的列Cell
				Param param = new Param();
				int cellNumbers = xssfRow.getLastCellNum();
				if (2 == cellNumbers) {// 2列分别获取两列中的值作为key和value
					for (int cellNum = 0; cellNum <= cellNumbers; cellNum++) {
						XSSFCell xssfCell = xssfRow.getCell(cellNum);
						if (xssfCell == null) {
							continue;
						}
						if (cellNum == 0) {
							param.setParamKey(xssfCell.toString());
						} else if (cellNum == 1) {
							param.setParamValue(xssfCell.toString());
						}
					}
				} else if (1 == cellNumbers) {// 1列,必须用":"或"："分隔开，否则不解析
					XSSFCell xssfCell = xssfRow.getCell(0);
					String xssStr = xssfCell.toString();
					if (null != xssfCell && (xssStr.indexOf(":") > -1 || xssStr.indexOf("：") > -1)) {
						String[] paramFix = null;
						if (xssStr.contains(":")) {
							paramFix = xssStr.split(":");
						} else if (xssStr.contains("：")) {
							paramFix = xssStr.split("：");
						}
						if (null != paramFix && paramFix.length > 0) {
							param.setParamKey(paramFix[0]);
							param.setParamValue(paramFix[1]);
						}
					} else {
						continue;
					}
				} else {// 非1或2列为非法文档，不解析
					continue;
				}
				paramList.add(param);
			}
		}
		return paramList;
	}

	/**
	 * 后缀为.xls
	 *
	 * @param fileDir
	 * @throws IOException
	 */
	private List<Param> readXls(InputStream inputStream) throws IOException {
		HSSFWorkbook hssfWorkbook = new HSSFWorkbook(inputStream);
		List<Param> paramList = new ArrayList<Param>();

		// 循环工作表Sheet
		int sheetNumbers = hssfWorkbook.getNumberOfSheets();
		for (int numSheet = 0; numSheet < sheetNumbers; numSheet++) {
			HSSFSheet hssfSheet = hssfWorkbook.getSheetAt(numSheet);
			if (hssfSheet == null) {
				continue;
			}

			// 循环当前Sheet的行Row
			int rowNumbers = hssfSheet.getLastRowNum();
			for (int rowNum = 0; rowNum <= rowNumbers; rowNum++) {
				HSSFRow hssfRow = hssfSheet.getRow(rowNum);
				if (hssfRow == null) {
					continue;
				}

				// 循环当前Row的列Cell
				Param param = new Param();
				int cellNumbers = hssfRow.getLastCellNum();
				if (2 == cellNumbers) {// 2列分别获取两列中的值作为key和value
					for (int cellNum = 0; cellNum <= cellNumbers; cellNum++) {
						HSSFCell hssfCell = hssfRow.getCell(cellNum);
						if (hssfCell == null) {
							continue;
						}
						if (cellNum == 0) {
							param.setParamKey(hssfCell.toString());
						} else if (cellNum == 1) {
							param.setParamValue(hssfCell.toString());
						}
					}
				} else if (1 == cellNumbers) {// 1列,必须用":"或"："分隔开，否则不解析
					HSSFCell hssfCell = hssfRow.getCell(0);
					String hssStr = hssfCell.toString();
					if (null != hssfCell && (hssStr.indexOf(":") > -1 || hssStr.indexOf("：") > -1)) {
						String[] paramFix = null;
						if (hssStr.contains(":")) {
							paramFix = hssStr.split(":");
						} else if (hssStr.contains("：")) {
							paramFix = hssStr.split("：");
						}
						if (null != paramFix && paramFix.length > 0) {
							param.setParamKey(paramFix[0]);
							param.setParamValue(paramFix[1]);
						}
					} else {
						continue;
					}
				} else {// 非1或2列为非法文档，不解析
					continue;
				}
				paramList.add(param);
			}
		}
		return paramList;
	}
}

param类

/**
 *
 */
package domain;

/**
 * @author liuyunlong
 *
 */
public class Param {

	public Param() {
		super();
	}

	private String paramKey;

	private String paramValue;

	public String getParamKey() {
		return paramKey;
	}

	public void setParamKey(String paramKey) {
		this.paramKey = paramKey;
	}

	public String getParamValue() {
		return paramValue;
	}

	public void setParamValue(String paramValue) {
		this.paramValue = paramValue;
	}

	@Override
	public String toString() {
		return "Param [paramKey=" + paramKey + ", paramValue=" + paramValue + "]";
	}

}