java 解析excle

jjava解析excle或者csv文件并导出到web界面:

创建ExcelShower.java

package com.ssm.controller;

import java.io.File;

import java.io.IOException;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.URL;

import java.net.URLDecoder;

import java.util.ArrayList;

import java.util.List;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import net.sf.json.JSONArray;

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

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

import com.pera.taskstat.excelToHtml.CSVFileUtil;

import com.pera.taskstat.excelToHtml.POIReadExcelToHtml03;

 /**

  *

  * @author yeyun

  * @Date 2016-06-015

  * @Describtion 解析数值模型的excel控制层

  */

@Controller

@RequestMapping(value="view/show/")

public class ExcelShower{

    /**

     * SID.

     */

    private static final long serialVersionUID = -8344971443770122206L;

    /**

     * 读取 Excel 显示页面.

     * @param properties

     * @return

     * @throws Exception

     */

    @SuppressWarnings("deprecation")

	@RequestMapping(value="read.action")

    public String read(HttpServletRequest request,HttpServletResponse response) throws Exception {

    	//定义一个字符串，用向前台传输拼写完毕的html页面

    	String htmlExcel="";

    	String m="";

        InputStream inputStream=null;

        HttpURLConnection httpURLConnection=null;

        Element element = null;

        DocumentBuilder db = null;

        DocumentBuilderFactory dbf = null;

        //读取a.xml文件

        File f = new File(getClass().getClassLoader().getResource("/config/a.xml").getPath());

        List<String> listString=new ArrayList<String>(); 

        //解析a.xml的内容，拼写读取文件的路径

        try {

         dbf = DocumentBuilderFactory.newInstance();

         db = dbf.newDocumentBuilder();

         Document dt = db.parse(f);

         element = dt.getDocumentElement();

         NodeList childNodes = element.getChildNodes();

         for (int i = 0; i < childNodes.getLength(); i++) {

        	 Node node1 = childNodes.item(i);

        	 listString.add(node1.getTextContent());

         }

         //要读取文件的路径

         m=listString.get(1)+listString.get(3)+"."+listString.get(5);

        }

        catch (Exception e) {

         e.printStackTrace();

        }

        //拼写出完整的url

        String u_url="http://"+m;

        System.out.println(u_url);

        //根据url去服务器读取文件

        try{

        	URLDecoder decoder = new URLDecoder();

        	String path = decoder.decode(u_url,"UTF-8");

//        	URL url = new URL(null,path,new com.sun.net.ssl.internal.www.protocol.https.Handler());

        	URL url = new URL(path);

        	System.out.println("url  =========  "+url);

            if(url!=null){

                httpURLConnection=(HttpURLConnection) url.openConnection();

                httpURLConnection.setConnectTimeout(3000);

                httpURLConnection.setRequestMethod("GET");

                int responseCode=httpURLConnection.getResponseCode();

                if(responseCode==200){

                    inputStream=httpURLConnection.getInputStream();

                }

            }

        }catch(Exception e){

        	System.out.println("错误信息："+e.getMessage());

        }  

        //引入poi的工具类

        POIReadExcelToHtml03 poire = new POIReadExcelToHtml03();

        //取得url中完整的文件名称

        int index = u_url.lastIndexOf("/");

        char[] ch = u_url.toCharArray();

        String lastString =String.copyValueOf(ch, index + 1, ch.length - index - 1);

        String a_lastString=lastString.substring(lastString.length()-3,lastString.length());

        //判断csv还是xls格式

        if(a_lastString.equals("csv")){

        	//顶用CSVFileUtil工具类方法

        	CSVFileUtil cSVFileUtil=new CSVFileUtil();

        	htmlExcel=cSVFileUtil.readCsvFile(inputStream, "utf-8");

        }else{

        	HSSFWorkbook workbook = new HSSFWorkbook(inputStream); //获整个Excel

        	htmlExcel = poire.getExcelInfo(workbook);

        }

            //放入集合，返回页面

        	List<String> list=new ArrayList<String>();

            list.add(htmlExcel);

            //转为json格式

            String json=JSONArray.fromObject(list).toString();	

            //响应前台编码

            response.setContentType("application/json;charset=UTF-8");

    		 try {

    			   response.getWriter().print(json);

    			 }

    		 catch (IOException e)

    		    {	e.printStackTrace(); }

    		return null;

    }

}

　　CSVFileUtil.java

package com.pera.taskstat.excelToHtml;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.util.ArrayList;

import java.util.List;

import java.util.regex.Matcher;

import java.util.regex.Pattern;  

import net.sf.json.JSONArray;

public class CSVFileUtil

{  

    /**

     * 构造，禁止实例化

     */  

    public static void main(String[] args)

    {

        // String argPath = "D:/test/435453453.csv";

        String argPath = "F://day01.csv";  

//        readCsvFile(argPath, "gbk");

    }  

    /**

     * csv文件读取<BR/>

     * 读取绝对路径为argPath的csv文件数据，并以List返回。

     *

     * @param argPath csv文件绝对路径

     * @return csv文件数据（List<String[]>）

     * @throws FileNotFoundException

     * @throws IOException

     */

    public  String readCsvFile(InputStream reader, String encoding)

    {  

        List<String[]> list = new ArrayList<String[]>();

//        File file = new File(argPath);  

//        FileInputStream input = null;

//        InputStreamReader reader = null;

        BufferedReader bReader = null;

        try

        {

//            input = new FileInputStream(file);

//            if (encoding == null)

//            {

//                reader = new InputStreamReader(input);

//            }

//            else

//            {

//                reader = new InputStreamReader(input, encoding);

//            }

            bReader = new BufferedReader(new  InputStreamReader(reader));

            String str = bReader.readLine();

            String str1 = "";

            Pattern pCells = Pattern.compile("(\"[^\"]*(\"{2})*[^\"]*\")*[^,]*,");

            while ((str = bReader.readLine()) != null)

            {

                if (!str.endsWith(","))

                {

                    str = str + ",";

                }

                Matcher mCells = pCells.matcher(str);

                List<String> listTemp = new ArrayList<String>();

                // 读取每个单元格

                while (mCells.find()) {

                    str1 = mCells.group();

                    str1 = str1.replaceAll(

                            "(?sm)\"?([^\"]*(\"{2})*[^\"]*)\"?.*,", "$1");

                    str1 = str1.replaceAll("(?sm)(\"(\"))", "$2");

                    listTemp.add(str1);  

                }

                list.add((String[]) listTemp.toArray(new String[listTemp.size()]));

            }

        }

        catch (FileNotFoundException e)

        {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        catch (IOException e)

        {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        finally

        {

            if (null != bReader)

            {  

                try

                {

                    bReader.close();

                }

                catch (IOException e)

                {

                    e.printStackTrace();

                }

            }

        } 

		StringBuffer lsb = new StringBuffer();

		lsb.append("<table width=100% style=\"border:2px solid #000;border-width:1px 0 0 1px;margin:2px 0 2px 0;border-collapse:collapse;\">");

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

			lsb.append("<tr  style=\"border:1px solid #000;border-width:0 1px 1px 0;margin:2px 0 2px 0;\">");

			for(int j=0;j<list.get(i).length;j++){

				lsb.append("<td style=\"border:1px solid #000;border-width:0 1px 1px 0;margin:2px 0 2px 0;\">"+list.get(i)[j]+"</td>");

			}

			lsb.append("</tr>");

		}

		lsb.append("</table>");

		String a=lsb.toString();

	    List<String> sList=new ArrayList<String>();

	    sList.add(a);

		String sourceListJson=JSONArray.fromObject(sList).toString();

		System.out.println("sourceListJson:"+sourceListJson);

        return a;

    }

}

　　POIReadExcelToHtml03.java

package com.pera.taskstat.excelToHtml;

import java.io.File;

import java.io.FileInputStream;

import java.io.InputStream;

import java.text.DecimalFormat;

import java.util.HashMap;

import java.util.Map;

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

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

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

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

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

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

import org.apache.poi.hssf.util.HSSFColor;

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

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

public class POIReadExcelToHtml03 {

	public static void main(String[] args) {

		try {

			POIReadExcelToHtml03 poire = new POIReadExcelToHtml03();

			String path = "C://SURFACE_UWYO_HOUR.xls";

			File sourcefile = new File(path);

			InputStream is = new FileInputStream(sourcefile);

			//POIFSFileSystem fs = new POIFSFileSystem(is);

			HSSFWorkbook wb = new HSSFWorkbook(is);

			String htmlExcel = poire.getExcelInfo(wb);

			System.out.println(poire.getExcelInfo(wb));

			is.close();

		} catch (Exception e) {

			e.printStackTrace();

		}

	}

	public  String getHtmlExcel(HSSFWorkbook wb){

		try {

			String htmlPage = getExcelInfo(wb);

			return htmlPage;

		}  catch (Exception e) {

			e.printStackTrace();

		}

		return null;

	}

	public String getExcelInfo(HSSFWorkbook wb) throws Exception {

		StringBuffer sb = new StringBuffer();

		Sheet sheet = wb.getSheetAt(0);

		int lastRowNum = sheet.getLastRowNum();

		Map<String, String> map[] = getRowSpanColSpanMap(sheet);

		sb.append("<table style='border-collapse:collapse;' width='100%'>");

		HSSFRow row = null;

		HSSFCell cell = null;

		// System.out.println(sheet.getPhysicalNumberOfRows());

		for (int rowNum = sheet.getFirstRowNum(); rowNum <= lastRowNum; rowNum++) {

			row = (HSSFRow) sheet.getRow(rowNum);

			if (row == null) {

				sb.append("<tr><td >  </td></tr>");

				continue;

			}

			sb.append("<tr>");

			int lastColNum = row.getLastCellNum();

			for (int colNum = 0; colNum < lastColNum; colNum++) {

				cell = row.getCell(colNum);

				if (cell == null) {

					sb.append("<td> </td>");

					continue;

				}

				String stringValue = getCellValue(cell);

				if (map[0].containsKey(rowNum + "," + colNum)) {

					String pointString = map[0].get(rowNum + "," + colNum);

					map[0].remove(rowNum + "," + colNum);

					int bottomeRow = Integer.valueOf(pointString.split(",")[0]);

					int bottomeCol = Integer.valueOf(pointString.split(",")[1]);

					int rowSpan = bottomeRow - rowNum + 1;

					int colSpan = bottomeCol - colNum + 1;

					sb.append("<td rowspan= '" + rowSpan + "' colspan= '"

							+ colSpan + "' ");

				} else if (map[1].containsKey(rowNum + "," + colNum)) {

					map[1].remove(rowNum + "," + colNum);

					continue;

				} else {

					sb.append("<td ");

				}

				HSSFCellStyle cellStyle = cell.getCellStyle();

				if (cellStyle != null) {

					short alignment = cellStyle.getAlignment();

					sb.append("align='" + convertAlignToHtml(alignment) + "' ");

					short verticalAlignment = cellStyle.getVerticalAlignment();

					sb.append("valign='"

							+ convertVerticalAlignToHtml(verticalAlignment)

							+ "' ");

					HSSFFont hf = cellStyle.getFont(wb);

					short boldWeight = hf.getBoldweight();

					short fontColor = hf.getColor();

					sb.append("style='");

					HSSFPalette palette = wb.getCustomPalette(); 

					HSSFColor hc = palette.getColor(fontColor);

					sb.append("font-weight:" + boldWeight + ";");

					// System.out.println(hf.getFontHeight());

					sb.append("font-size: " + hf.getFontHeight() / 2.5 + "%;"); 

					String fontColorStr = convertToStardColor(hc);

					if (fontColorStr != null && !"".equals(fontColorStr.trim())) {

						sb.append("color:" + fontColorStr + ";");

					}

					int columnWidth = sheet.getColumnWidth(cell.getColumnIndex()) ;

					sb.append("width:" + columnWidth + "px;");

					short bgColor = cellStyle.getFillForegroundColor();

					hc = palette.getColor(bgColor);

					String bgColorStr = convertToStardColor(hc);

					if (bgColorStr != null && !"".equals(bgColorStr.trim())) {

						sb.append("background-color:" + bgColorStr + ";");

					}

					/*

					short borderColor = cellStyle.getBottomBorderColor();

					hc = palette.getColor(borderColor);

					String borderColorStr = convertToStardColor(hc);

					if (borderColorStr != null

							&& !"".equals(borderColorStr.trim())) {

						sb.append("border-color:" + borderColorStr + ";");

					}

					*/

					 sb.append( getBorderStyle(palette,0,cellStyle.getBorderTop(),cellStyle.getTopBorderColor()));

				     sb.append( getBorderStyle(palette,1,cellStyle.getBorderRight(),cellStyle.getRightBorderColor()));

				     sb.append( getBorderStyle(palette,3,cellStyle.getBorderLeft(),cellStyle.getLeftBorderColor()));

				     sb.append( getBorderStyle(palette,2,cellStyle.getBorderBottom(),cellStyle.getBottomBorderColor()));

					// boolean borderBoolean = cellStyle.getWrapText();

					//

					// if(borderBoolean){

					// sb.append("border-style: inset;");

					// }

					sb.append("' ");

				}

				sb.append(">");

				if (stringValue == null || "".equals(stringValue.trim())) {

					sb.append("   ");

				} else {

					sb.append(stringValue.replace(String.valueOf((char) 160),

							" "));

				}

				sb.append("</td>");

			}

			sb.append("</tr>");

		}

		sb.append("</table>");

		return sb.toString();

	}

	@SuppressWarnings("unchecked")

	private static Map<String, String>[] getRowSpanColSpanMap(Sheet sheet) {

		Map<String, String> map0 = new HashMap<String, String>();

		Map<String, String> map1 = new HashMap<String, String>();

		int mergedNum = sheet.getNumMergedRegions();

		CellRangeAddress range = null;

		for (int i = 0; i < mergedNum; i++) {

			range = sheet.getMergedRegion(i);

			int topRow = range.getFirstRow();

			int topCol = range.getFirstColumn();

			int bottomRow = range.getLastRow();

			int bottomCol = range.getLastColumn();

			map0.put(topRow + "," + topCol, bottomRow + "," + bottomCol);

			// System.out.println(topRow + "," + topCol + "," + bottomRow + ","

			// + bottomCol);

			int tempRow = topRow;

			while (tempRow <= bottomRow) {

				int tempCol = topCol;

				while (tempCol <= bottomCol) {

					map1.put(tempRow + "," + tempCol, "");

					tempCol++;

				}

				tempRow++;

			}

			map1.remove(topRow + "," + topCol);

		}

		Map[] map = { map0, map1 };

		return map;

	}

	private static String convertAlignToHtml(short alignment) {

		String align = "left";

		switch (alignment) {

		case HSSFCellStyle.ALIGN_LEFT:

			align = "left";

			break;

		case HSSFCellStyle.ALIGN_CENTER:

			align = "center";

			break;

		case HSSFCellStyle.ALIGN_RIGHT:

			align = "right";

			break;

		default:

			break;

		}

		return align;

	}

	private static String convertVerticalAlignToHtml(short verticalAlignment) {

		String valign = "middle";

		switch (verticalAlignment) {

		case HSSFCellStyle.VERTICAL_BOTTOM:

			valign = "bottom";

			break;

		case HSSFCellStyle.VERTICAL_CENTER:

			valign = "center";

			break;

		case HSSFCellStyle.VERTICAL_TOP:

			valign = "top";

			break;

		default:

			break;

		}

		return valign;

	}

	private static String convertToStardColor(HSSFColor hc) {

		StringBuffer sb = new StringBuffer("");

		if (hc != null) {

			if (HSSFColor.AUTOMATIC.index == hc.getIndex()) {

				return null;

			}

			sb.append("#");

			for (int i = 0; i < hc.getTriplet().length; i++) {

				sb.append(fillWithZero(Integer.toHexString(hc.getTriplet()[i])));

			}

		}

		return sb.toString();

	}

	private static String fillWithZero(String str) {

		if (str != null && str.length() < 2) {

			return "0" + str;

		}

		return str;

	}

	private static String getCellValue(HSSFCell cell) {

		switch (cell.getCellType()) {

		case HSSFCell.CELL_TYPE_NUMERIC:

			//DecimalFormat format = new DecimalFormat("#0.##");

			//return format.format(cell.getNumericCellValue());

			// return String.valueOf(cell.getNumericCellValue());

			DecimalFormat format = new DecimalFormat();

            //将数字显示为数字

//			format.applyPattern("0.00%");

			return format.format(cell.getNumericCellValue());

		case HSSFCell.CELL_TYPE_STRING:

			return cell.getStringCellValue();

			// case HSSFCell.CELL_TYPE_FORMULA:

			//

			// return cell.getCellFormula();

		default:

			return "";

		}

	}

	 static String[] bordesr={"border-top:","border-right:","border-bottom:","border-left:"};

	 static String[] borderStyles={"solid ","solid ","solid ","solid ","solid ","solid ","solid ","solid ","solid ","solid","solid","solid","solid","solid"};

	 //tring[] borderClors={};

	 private static  String getBorderStyle(  HSSFPalette palette ,int b,short s, short t){

	     if(s==0)return  bordesr[b]+borderStyles[s]+"#d0d7e5 1px;";;

	     String borderColorStr = convertToStardColor( palette.getColor(t));

	     borderColorStr=borderColorStr==null|| borderColorStr.length()<1?"#000000":borderColorStr;

//	     System.out.println( bordesr[b]+borderStyles[s]+borderColorStr+" 1px; "+t);

		 return bordesr[b]+borderStyles[s]+borderColorStr+" 1px;";

	 }

}

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