fir commit all

.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/>
+	<classpathentry kind="lib" path="libs/poi-3.10.1-20140818.jar"/>
+	<classpathentry kind="lib" path="libs/poi-examples-3.10.1-20140818.jar"/>
+	<classpathentry kind="lib" path="libs/poi-excelant-3.10.1-20140818.jar"/>
+	<classpathentry kind="lib" path="libs/poi-ooxml-3.10.1-20140818.jar"/>
+	<classpathentry kind="lib" path="libs/poi-ooxml-schemas-3.10.1-20140818.jar"/>
+	<classpathentry kind="lib" path="libs/poi-scratchpad-3.10.1-20140818.jar"/>
+	<classpathentry kind="lib" path="libs/xmlbeans-2.3.0.jar"/>
+	<classpathentry kind="lib" path="libs/dom4j-1.6.1.jar"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>TestReadFromExcel</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

.settings/org.eclipse.jdt.core.prefs

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+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.6
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.6
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.6

src/com/hjd/poiutils/ExcelUtils.java

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+package com.hjd.poiutils;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.TreeMap;
+
+import org.apache.poi.ss.usermodel.Sheet;
+
+import org.apache.poi.hssf.usermodel.HSSFCellStyle;
+import org.apache.poi.hssf.usermodel.HSSFFont;
+import org.apache.poi.hssf.usermodel.HSSFWorkbook;
+import org.apache.poi.hssf.util.HSSFColor;
+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.Row;
+import org.apache.poi.ss.usermodel.Workbook;
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
+
+public class ExcelUtils {
+
+	public static final String HEADERINFO = "headInfo";
+	public static final String DATAINFON = "dataInfo";
+
+	/**
+	 * 
+	 * @Title: getWeebWork
+	 * @Description: TODO(根据传入的文件名获取工作簿对象(Workbook))
+	 * @param filename
+	 * @return
+	 * @throws IOException
+	 */
+	public static Workbook getWeebWork(String filename) throws IOException {
+		Workbook workbook = null;
+		if (null != filename) {
+			String fileType = filename.substring(filename.lastIndexOf("."),
+					filename.length());
+			FileInputStream fileStream = new FileInputStream(new File(filename));
+			if (".xls".equals(fileType.trim().toLowerCase())) {
+				workbook = new HSSFWorkbook(fileStream);// 创建 Excel 2003 工作簿对象
+			} else if (".xlsx".equals(fileType.trim().toLowerCase())) {
+				workbook = new XSSFWorkbook(fileStream);// 创建 Excel 2007 工作簿对象
+			}
+		}
+		return workbook;
+	}
+
+	/**
+	 * 
+	 * @Title: writeExcel
+	 * @Description: TODO(导出Excel表)
+	 * @param pathname
+	 *            :导出Excel表的文件路径
+	 * @param map
+	 *            ：封装需要导出的数据(HEADERINFO封装表头信息，DATAINFON：封装要导出的数据信息,此处需要使用TreeMap
+	 *            ) 例如： map.put(ExcelUtil.HEADERINFO,List<String> headList);
+	 *            map.put(ExcelUtil.DATAINFON,List<TreeMap<String,Object>>
+	 *            dataList);
+	 * @param wb
+	 * @throws IOException
+	 */
+	public static void writeExcel(String pathname, Map<String, Object> map,
+			Workbook wb) throws IOException {
+		if (null != map && null != pathname) {
+			List<Object> headList = (List<Object>) map
+					.get(ExcelUtils.HEADERINFO);
+			List<TreeMap<String, Object>> dataList = (List<TreeMap<String, Object>>) map
+					.get(ExcelUtils.DATAINFON);
+			CellStyle style = getCellStyle(wb);
+			Sheet sheet = wb.createSheet();// 在文档对象中创建一个表单..默认是表单名字是Sheet0、Sheet1....
+			// Sheet sheet = wb.createSheet("hell poi");//在创建爱你表单的时候指定表单的名字
+
+			/**
+			 * 设置Excel表的第一行即表头
+			 */
+			Row row = sheet.createRow(0);
+			for (int i = 0; i < headList.size(); i++) {
+				Cell headCell = row.createCell(i);
+				headCell.setCellType(Cell.CELL_TYPE_STRING);// 设置这个单元格的数据的类型,是文本类型还是数字类型
+				headCell.setCellStyle(style);// 设置表头样式
+				headCell.setCellValue(String.valueOf(headList.get(i)));// 给这个单元格设置值
+			}
+
+			for (int i = 0; i < dataList.size(); i++) {
+				Row rowdata = sheet.createRow(i + 1);// 创建数据行
+				TreeMap<String, Object> mapdata = dataList.get(i);
+				Iterator it = mapdata.keySet().iterator();
+				int j = 0;
+				while (it.hasNext()) {
+					String strdata = String.valueOf(mapdata.get(it.next()));
+					Cell celldata = rowdata.createCell(j);// 在一行中创建某列..
+					celldata.setCellType(Cell.CELL_TYPE_STRING);
+					celldata.setCellValue(strdata);
+					j++;
+				}
+			}
+
+			// 文件流
+			File file = new File(pathname);
+			OutputStream os = new FileOutputStream(file);
+			os.flush();
+			wb.write(os);
+			os.close();
+		}
+	}
+
+	/**
+	 * 
+	 * @Title: getCellStyle
+	 * @Description: TODO（设置表头样式）
+	 * @param wb
+	 * @return
+	 */
+	public static CellStyle getCellStyle(Workbook wb) {
+		CellStyle style = wb.createCellStyle();
+		Font font = wb.createFont();
+		font.setFontName("宋体");
+		font.setFontHeightInPoints((short) 12);// 设置字体大小
+		font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);// 加粗
+		style.setFillForegroundColor(HSSFColor.LIME.index);// 设置背景色
+		style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
+		style.setAlignment(HSSFCellStyle.SOLID_FOREGROUND);// 让单元格居中
+		// style.setWrapText(true);//设置自动换行
+		style.setFont(font);
+		return style;
+	}
+
+	/**
+	 * 
+	 * @Title: readerExcelDemo
+	 * @Description: TODO(读取Excel表中的数据)
+	 * @throws IOException
+	 */
+	public static void readFromExcelDemo() throws IOException {
+		/**
+		 * 读取Excel表中的所有数据
+		 */
+		Workbook workbook = getWeebWork("E:/test.xlsx");
+		System.out.println("总表页数为：" + workbook.getNumberOfSheets());// 获取表页数
+		Sheet sheet = workbook.getSheetAt(0);
+		// Sheet sheet = workbook.getSheetAt(1);
+		int rownum = sheet.getLastRowNum();// 获取总行数
+		for (int i = 0; i <= rownum; i++) {
+			Row row = sheet.getRow(i);
+			Cell orderno = row.getCell(2);// 获取指定单元格中的数据
+			// System.out.println(orderno.getCellType());//这个打印的是cell的type
+			short cellnum = row.getLastCellNum(); // 获取单元格的总列数
+			for (int j = row.getFirstCellNum(); j < row.getLastCellNum(); j++) {
+				Cell celldata = row.getCell(j);
+				System.out.print(celldata + "\t");
+			}
+			System.out.println();
+		}
+
+		/**
+		 * 读取指定位置的单元格
+		 */
+		// Row row1 = sheet.getRow(1);
+		// Cell cell1 = row1.getCell(2);
+		// System.out.print("(1,2)位置单元格的值为："+cell1);
+		// BigDecimal big = new
+		// BigDecimal(cell1.getNumericCellValue());//将科学计数法表示的数据转化为String类型
+		// System.out.print("\t"+String.valueOf(big));
+
+	}
+
+	public static void readFromExcelDemo1() throws IOException {
+		/**
+		 * 读取Excel表中的所有数据
+		 * 
+		 * Workbook: excel的文档对象 sheet: excel的表单 row: excel中的行 cell: excel中的单元格子
+		 * 
+		 */
+		Workbook workbook = getWeebWork("E:/test.xlsx");
+		System.out.println("总表页数为：" + workbook.getNumberOfSheets());// 获取表页数
+		// Sheet sheet =workbook.getSheetAt(0);
+		Sheet sheet = workbook.getSheetAt(2);// 获取第二个表单
+		int rownum = sheet.getLastRowNum();// 获取总行数
+		for (int i = 0; i <= rownum; i++) {
+			Row row = sheet.getRow(i);// 获取表达的第i行
+			// Cell orderno =
+			// row.getCell(2);//获取指定单元格中的数据(获取一行中的第2列(这里的2指的是0,1,2.排在第三位))
+			// System.out.println(orderno.getCellType());//这个打印的是cell的type
+			// short cellnum=row.getLastCellNum();
+			// //获取单元格的总列数(获取一行中有多少个单元格(也就是多少列))
+
+			/**
+			 * row.getFirstCellNum(): 获取行的第一个单元格的位置 row.getLastCellNum():
+			 * 获取行的最后一个单元格的位置
+			 */
+			for (int j = row.getFirstCellNum(); j < row.getLastCellNum(); j++) {// 遍历一行中的所有列
+				Cell celldata = row.getCell(j);// 获取一行中的第j列返回Cell类型的数据
+				System.out.print(celldata + "\t");//
+			}
+
+			// 打印指定列
+			// Cell celldata = row.getCell(4);//获取这一行中的第4列(在第5个位置上)
+			// System.out.print( "\"" + celldata+"\",");
+
+			System.out.println();
+		}
+
+		/**
+		 * 读取指定位置的单元格
+		 */
+		// Row row1 = sheet.getRow(1);
+		// Cell cell1 = row1.getCell(2);
+		// System.out.print("(1,2)位置单元格的值为："+cell1);
+		// BigDecimal big = new
+		// BigDecimal(cell1.getNumericCellValue());//将科学计数法表示的数据转化为String类型
+		// System.out.print("\t"+String.valueOf(big));
+
+	}
+
+
+	public static void readFromExcelDemo(String fileAbsolutePath) throws IOException {
+		/**
+		 * 读取Excel表中的所有数据
+		 */
+		Workbook workbook = getWeebWork(fileAbsolutePath);
+		System.out.println("总表页数为：" + workbook.getNumberOfSheets());// 获取表页数
+		Sheet sheet = workbook.getSheetAt(0);
+		// Sheet sheet = workbook.getSheetAt(1);
+		int rownum = sheet.getLastRowNum();// 获取总行数
+		for (int i = 0; i <= rownum; i++) {
+			Row row = sheet.getRow(i);
+			Cell orderno = row.getCell(2);// 获取指定单元格中的数据
+			// System.out.println(orderno.getCellType());//这个打印的是cell的type
+			short cellnum = row.getLastCellNum(); // 获取单元格的总列数
+			for (int j = row.getFirstCellNum(); j < row.getLastCellNum(); j++) {
+				Cell celldata = row.getCell(j);
+				System.out.print(celldata + "\t");
+			}
+			System.out.println();
+		}
+
+		/**
+		 * 读取指定位置的单元格
+		 */
+		// Row row1 = sheet.getRow(1);
+		// Cell cell1 = row1.getCell(2);
+		// System.out.print("(1,2)位置单元格的值为："+cell1);
+		// BigDecimal big = new
+		// BigDecimal(cell1.getNumericCellValue());//将科学计数法表示的数据转化为String类型
+		// System.out.print("\t"+String.valueOf(big));
+
+	}
+
+
+	public static void main(String[] args) throws IOException {
+//		 readFromExcelDemo1();
+
+//		String filePath = "E:/test.xlsx";
+//		readFromExcelDemo(filePath);//从一个指定的excel文件中读取内容
+
+
+//		writeToExcelDemo();
+	}
+
+
+
+	public static void writeToExcelDemo() throws IOException {
+		/**
+		 * HSSF: .xls XSSF: .xlsx 所以大家会在官网中看到Excel = HSSF+XSSF
+		 * 
+		 * HSSF是POI工程对Excel 97(-2007)文件操作的纯Java实现 XSSF是POI工程对Excel 2007 OOXML
+		 * (.xlsx)文件操作的纯Java实现
+		 * 
+		 * 从POI 3.8版本开始，提供了一种基于XSSF的低内存占用的API----SXSSF
+		 * 
+		 */
+
+		Workbook wb = new XSSFWorkbook();// 创建一个新的excel的文档对象
+		Map<String, Object> map = new HashMap<String, Object>();
+		List headList = new ArrayList();// 表头数据
+		headList.add("下单时间");
+		headList.add("结账时间");
+		headList.add("订单编号");
+		headList.add("订单金额");
+		headList.add("用户名");// excel的都
+
+		/**
+		 * TreeMap基于红黑树实现
+		 */
+		List dataList = new ArrayList();// 表格内的数据
+		for (int i = 0; i < 15; i++) {
+			TreeMap<String, Object> treeMap = new TreeMap<String, Object>();// 此处的数据必须为有序数据，所以使用TreeMap进行封装
+			treeMap.put("m1", "2013-10-" + i + 1);
+			treeMap.put("m2", "2013-11-" + i + 1);
+			treeMap.put("m3", "20124" + i + 1);
+			treeMap.put("m4", 23.5 + i + 1);
+			treeMap.put("m5", "张三_" + i);
+			dataList.add(treeMap);
+		}
+
+		/*
+		 * 先不要加上以下这一段,否则以下错误: Cannot get a numeric value from a text
+		 * cell(不能从一个text cell中获取数字类型的数据)
+		 * 
+		 * 解决办法: http://blog.csdn.net/ysughw/article/details/9288307
+		 */
+		// TreeMap<String,Object> treeMap1 = new TreeMap<String, Object>();
+		// treeMap1.put("asd", null);
+		// treeMap1.put("猪头", "zhutou");
+		// dataList.add(treeMap1);
+		map.put(ExcelUtils.HEADERINFO, headList);
+		map.put(ExcelUtils.DATAINFON, dataList);
+		writeExcel("E:/test1.xlsx", map, wb);//往wb里面写map中内容，生成E:/test1.xlsx这个文件....
+	}
+}