excelDownload

<action name="downloadExcel" class="action.office.DownloadExcelAction"><result name="success" type="stream">   <param name="contentType">application/vnd.ms-excel</param><!--     默认就是 inputStream，它将会指示 StreamResult 通过 inputName 属性值的 getter 方法,            比如这里就是 getExcelInputStream() 来获取下载文件的内容，意味着你的 Action 要有这个方法     -->              <param name="inputName">downloadFile</param>                  <param name="contentDisposition">attachment;fileName="${fileName}"</param>                  <param name="bufferSize">4096</param>   </result>  </action>

jxl.jar

 

 

 

 

<filter-mapping><filter-name>struts2</filter-name><url-pattern>/office/task/downloadExcel.action</url-pattern></filter-mapping>

 

package action.office;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStream;import java.io.UnsupportedEncodingException;import java.util.ArrayList;import java.util.List;import java.util.Map;import javax.servlet.ServletContext;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;import org.apache.struts2.ServletActionContext;import org.apache.struts2.interceptor.ServletRequestAware;import org.apache.struts2.interceptor.ServletResponseAware;import org.apache.struts2.interceptor.SessionAware;import org.apache.struts2.util.ServletContextAware;import org.fsap.util.DowloadExcelUtil;import org.fsap.util.ViewSet;import com.opensymphony.xwork2.Action;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;public class DownloadExcelAction extends ActionSupport implements ServletResponseAware,ServletRequestAware, ServletContextAware,SessionAware {private static final long serialVersionUID = -2786097100189963452L;protected HttpServletRequest request;    protected HttpServletResponse response;    protected ServletContext application;//protected Map<String, Object> session = ActionContext.getContext().getSession();protected Map<String, Object> session;//= (Map<String, Object>) ServletActionContext.getRequest().getSession(); ;//文件名 private String fileName ="text2.xls";//获取服务器Root路径。 application/vnd.ms-excelprivate String filePath;private InputStream downloadFile;private DowloadExcelUtil jxl = new DowloadExcelUtil();public DownloadExcelAction() {}public String execute(){//System.out.println("ok--session------"+session.size());ViewSet view = (ViewSet) session.get("view");//表格台头titlesString[] titles =new String[view.getItems()];//第一行view.getLine(0);for(int l=0;l<view.getItems();l++){titles[l] = view.get(l)==" "?"":view.get(l);} //表格内容listList<String[]> list = new ArrayList<String[]>();;  String[] s1 = null ;  //从view第二行开始。for(int j=1;j<view.getSize();j++){view.getLine(j);s1 = new String[view.getItems()];for(int l=0;l<view.getItems();l++){s1[l] = view.get(l).trim().equals(" ")?"":view.get(l);//System.out.println(l);}list.add(s1);}//表格行创建在io中。  ByteArrayOutputStream out = new ByteArrayOutputStream();      jxl.createExcelFile(out, fileName, titles,list);     //strurts2 输出流。  downloadFile = new ByteArrayInputStream(out.toByteArray());//    jxl.readDataFromExcel(new File(filePath), 0);//    jxl.openExcel("D://Program Files//Kingsoft//WPS Office Professional//office6//et.EXE",filePath);     return Action.SUCCESS;} // 下载文件      public InputStream getDownloadFile() {        return downloadFile;      }        public void setFileName(String fileName) {          try {// 解决中文文件名问题              this.fileName = new String(fileName.getBytes("ISO-8859-1"), "GBK");          } catch (UnsupportedEncodingException e) {              e.printStackTrace();          }      }        public String getFileName() {          String name = "";          try {// 解决下载文件中文文件名问题              name = new String(fileName.getBytes("GBK"), "ISO8859-1");          } catch (UnsupportedEncodingException e) {              e.printStackTrace();          }          return name;      }  // public Map<String, Object> getSession() {//return session;//}////public void setSession(Map<String, Object> session) {//this.session = session;//}public void setDownloadFile(InputStream downloadFile) {this.downloadFile = downloadFile;}public String getFilePath() {return filePath;}public void setFilePath(String filePath) {this.filePath = filePath;}@Override    public void setServletResponse(HttpServletResponse response) {        this.response = response;    }    @Override    public void setServletRequest(HttpServletRequest request) {        this.request = request;    }    @Override    public void setServletContext(ServletContext application) {        this.application = application;    }@Overridepublic void setSession(Map arg0) {this.session = arg0;}}

 

package org.fsap.util;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.InputStream;import java.io.OutputStream;import java.util.ArrayList;import java.util.Date;import java.util.List;import jxl.Cell;import jxl.CellType;import jxl.CellView;import jxl.Sheet;import jxl.Workbook;import jxl.WorkbookSettings;import jxl.format.Alignment;import jxl.format.Border;import jxl.format.BorderLineStyle;import jxl.format.Colour;import jxl.format.VerticalAlignment;import jxl.write.Formula;import jxl.write.Label;import jxl.write.NumberFormat;import jxl.write.WritableCellFeatures;import jxl.write.WritableCellFormat;import jxl.write.WritableFont;import jxl.write.WritableSheet;import jxl.write.WritableWorkbook;import jxl.write.WriteException;public class DowloadExcelUtil {/** *  *  * @param os  输出流  * @param sheetName 工作表名 * @param dataTitles 台头 * @param dataContent 表内容 */public void createExcelFile(OutputStream os,String sheetName,   String[] dataTitles,List<String[]> dataContent) {  WritableWorkbook workbook;  try {    workbook = Workbook.createWorkbook(os);   WritableSheet sheet = workbook.createSheet(sheetName, 0); // 添加第一个工作表   initialSheetSetting(sheet,dataTitles,dataContent);   Label label;   for (int i = 0; i < dataTitles.length; i++) {    // Label(列号,行号,内容,风格)    label = new Label(i, 0, dataTitles[i], getTitleCellFormat());    sheet.addCell(label);   }   System.out.println("dataContent.size="+dataContent.size());   int rowNo=0 ;//行号 for(int i=0;i<dataContent.size();i++){ insertRowData(sheet, i+1, dataContent.get(i), getDataCellFormat(CellType.STRING_FORMULA)); rowNo = i+1; }//   // 插入一行//   insertRowData(sheet, 1, new String[] { "200201001", "张三222222222222222", "100",//     "60", "100", "260" },//     getDataCellFormat(CellType.STRING_FORMULA));//   // 一个一个插入行//   label = new Label(0, 2, "200201002",//     getDataCellFormat(CellType.STRING_FORMULA));//   sheet.addCell(label);//   label = new Label(1, 2, "李四2222222222",//     getDataCellFormat(CellType.STRING_FORMULA));//   sheet.addCell(label);//   insertOneCellData(sheet, 2, 2, 70.5,//     getDataCellFormat(CellType.NUMBER));//   insertOneCellData(sheet, 3, 2, 90.523,//     getDataCellFormat(CellType.NUMBER));//   insertOneCellData(sheet, 4, 2, 60.5,//     getDataCellFormat(CellType.NUMBER));//   insertFormula(sheet, 5, 2, "C3+D3+E3",//     getDataCellFormat(CellType.NUMBER_FORMULA));   // 插入日期   mergeCellsAndInsertData(sheet, 0, rowNo+1, dataContent.get(0).length-1,  rowNo+1, "导出时间："+new Date(),     getDataCellFormat(CellType.DATE));   workbook.write();   workbook.close();  } catch (Exception e) {   e.printStackTrace();  } } /**  * @param args  */ /**  * 生成Excel文件  *   * @param path  *            文件路径  * @param sheetName  *            工作表名称  * @param dataTitles  *            数据标题  */ public void createExcelFile(String path, String sheetName,   String[] dataTitles,List<String[]> dataContent) {  WritableWorkbook workbook;  try {   OutputStream os = new FileOutputStream(path);   workbook = Workbook.createWorkbook(os);   WritableSheet sheet = workbook.createSheet(sheetName, 0); // 添加第一个工作表   initialSheetSetting(sheet,dataTitles,dataContent);   Label label;   for (int i = 0; i < dataTitles.length; i++) {    // Label(列号,行号,内容,风格)    label = new Label(i, 0, dataTitles[i], getTitleCellFormat());    sheet.addCell(label);   }   System.out.println("dataContent.size="+dataContent.size());   int rowNo=0 ;//行号 for(int i=0;i<dataContent.size();i++){ insertRowData(sheet, i+1, dataContent.get(i), getDataCellFormat(CellType.STRING_FORMULA)); rowNo = i+1; }//   // 插入一行//   insertRowData(sheet, 1, new String[] { "200201001", "张三222222222222222", "100",//     "60", "100", "260" },//     getDataCellFormat(CellType.STRING_FORMULA));//   // 一个一个插入行//   label = new Label(0, 2, "200201002",//     getDataCellFormat(CellType.STRING_FORMULA));//   sheet.addCell(label);//   label = new Label(1, 2, "李四2222222222",//     getDataCellFormat(CellType.STRING_FORMULA));//   sheet.addCell(label);//   insertOneCellData(sheet, 2, 2, 70.5,//     getDataCellFormat(CellType.NUMBER));//   insertOneCellData(sheet, 3, 2, 90.523,//     getDataCellFormat(CellType.NUMBER));//   insertOneCellData(sheet, 4, 2, 60.5,//     getDataCellFormat(CellType.NUMBER));//   insertFormula(sheet, 5, 2, "C3+D3+E3",//     getDataCellFormat(CellType.NUMBER_FORMULA));   // 插入日期   mergeCellsAndInsertData(sheet, 0, rowNo+1, 5,  rowNo+1, "导出时间："+new Date(),     getDataCellFormat(CellType.DATE));   workbook.write();   workbook.close();  } catch (Exception e) {   e.printStackTrace();  } } /**  * 初始化表格属性  *   * @param sheet  * @param dataTitles 台头  * @param dataContent 表内容  */ public void initialSheetSetting(WritableSheet sheet,String[] dataTitles,List<String[]> dataContent) {  try {//  System.out.println("    *********列宽");   // sheet.getSettings().setProtected(true); //设置xls的保护，单元格为只读的 //  sheet.getSettings().setDefaultColumnWidth(10); // 设置列的默认宽度   // sheet.setRowView(2,false);//行高自动扩展   // setRowView(int row, int height);--行高   // setColumnView(int col,int width); --列宽 int[] col_width =new int[dataTitles.length]; for(int i=0;i<dataTitles.length;i++){ //设置最大列宽 col_width[i] = dataTitles[i].length()+6; } for(int k = 0;k<dataContent.size();k++){ for(int i=0;i<dataContent.get(k).length;i++){ //设置最大列宽 col_width[i] = dataContent.get(k)[i].length()+6>col_width[i]?dataContent.get(k)[i].length()+6:col_width[i];  } }  for(int i=0;i<col_width.length;i++){  sheet.setColumnView(i,col_width[i]);//根据内容自动设置列宽 // System.out.println("列宽"+ col_width[i]);  }  // sheet.setColumnView(0, 20);// 设置第一列宽度  } catch (Exception e) {   e.printStackTrace();  } } /**  * 插入公式  *   * @param sheet  * @param col  * @param row  * @param formula  * @param format  */ public void insertFormula(WritableSheet sheet, Integer col, Integer row,   String formula, WritableCellFormat format) {  try {   Formula f = new Formula(col, row, formula, format);   sheet.addCell(f);  } catch (Exception e) {   e.printStackTrace();  } } /**  * 插入一行数据  *   * @param sheet  *            工作表  * @param row  *            行号  * @param content  *            内容  * @param format  *            风格  */ public void insertRowData(WritableSheet sheet, Integer row,   String[] dataArr, WritableCellFormat format) {  try {   Label label;   for (int i = 0; i < dataArr.length; i++) {    label = new Label(i, row, dataArr[i], format);    sheet.addCell(label);   }  } catch (Exception e) {   e.printStackTrace();  } } /**  * 插入单元格数据  *   * @param sheet  * @param col  * @param row  * @param data  */ public void insertOneCellData(WritableSheet sheet, Integer col,   Integer row, Object data, WritableCellFormat format) {  try {   if (data instanceof Double) {    jxl.write.Number labelNF = new jxl.write.Number(col, row,      (Double) data, format);    sheet.addCell(labelNF);   } else if (data instanceof Boolean) {    jxl.write.Boolean labelB = new jxl.write.Boolean(col, row,      (Boolean) data, format);    sheet.addCell(labelB);   } else if (data instanceof Date) {    jxl.write.DateTime labelDT = new jxl.write.DateTime(col, row,      (Date) data, format);    sheet.addCell(labelDT);    setCellComments(labelDT, "这是个创建表的日期说明！");   } else {    Label label = new Label(col, row, data.toString(), format);    sheet.addCell(label);   }  } catch (Exception e) {   e.printStackTrace();  } } /**  * 合并单元格，并插入数据  *   * @param sheet  * @param col_start  * @param row_start  * @param col_end  * @param row_end  * @param data  * @param format  */ public void mergeCellsAndInsertData(WritableSheet sheet, Integer col_start,   Integer row_start, Integer col_end, Integer row_end, Object data,   WritableCellFormat format) {  try {   sheet.mergeCells(col_start, row_start, col_end, row_end);// 左上角到右下角   insertOneCellData(sheet, col_start, row_start, data, format);  } catch (Exception e) {   e.printStackTrace();  } } /**  * 给单元格加注释  *   * @param label  * @param comments  */ public void setCellComments(Object label, String comments) {  WritableCellFeatures cellFeatures = new WritableCellFeatures();  cellFeatures.setComment(comments);  if (label instanceof jxl.write.Number) {   jxl.write.Number num = (jxl.write.Number) label;   num.setCellFeatures(cellFeatures);  } else if (label instanceof jxl.write.Boolean) {   jxl.write.Boolean bool = (jxl.write.Boolean) label;   bool.setCellFeatures(cellFeatures);  } else if (label instanceof jxl.write.DateTime) {   jxl.write.DateTime dt = (jxl.write.DateTime) label;   dt.setCellFeatures(cellFeatures);  } else {   Label _label = (Label) label;   _label.setCellFeatures(cellFeatures);  } } /**  * 读取excel  *   * @param inputFile  * @param inputFileSheetIndex  * @throws Exception  */ public ArrayList<String> readDataFromExcel(File inputFile,   int inputFileSheetIndex) {  ArrayList<String> list = new ArrayList<String>();  Workbook book = null;  Cell cell = null;  WorkbookSettings setting = new WorkbookSettings();  java.util.Locale locale = new java.util.Locale("zh", "CN");  setting.setLocale(locale);  setting.setEncoding("ISO-8859-1");  try {   book = Workbook.getWorkbook(inputFile, setting);  } catch (Exception e) {   e.printStackTrace();  }  Sheet sheet = book.getSheet(inputFileSheetIndex);  for (int rowIndex = 0; rowIndex < sheet.getRows(); rowIndex++) {// 行   for (int colIndex = 0; colIndex < sheet.getColumns(); colIndex++) {// 列    cell = sheet.getCell(colIndex, rowIndex);    // System.out.println(cell.getContents());    list.add(cell.getContents());   }  }  book.close();  return list; } /**  * 得到数据表头格式  *   * @return  */ public WritableCellFormat getTitleCellFormat() {  WritableCellFormat wcf = null;  try {   // 字体样式   WritableFont wf = new WritableFont(WritableFont.TIMES, 12,     WritableFont.NO_BOLD, false);// 最后一个为是否italic   wf.setColour(Colour.RED);   wcf = new WritableCellFormat(wf);   // 对齐方式   wcf.setAlignment(Alignment.CENTRE);   wcf.setVerticalAlignment(VerticalAlignment.CENTRE);   // 边框   wcf.setBorder(Border.ALL, BorderLineStyle.THIN);   // 背景色   wcf.setBackground(Colour.GREY_25_PERCENT);  } catch (WriteException e) {   e.printStackTrace();  }  return wcf; } /**  * 得到数据格式  *   * @return  */ public WritableCellFormat getDataCellFormat(CellType type) {  WritableCellFormat wcf = null;  try {   // 字体样式   if (type == CellType.NUMBER || type == CellType.NUMBER_FORMULA) {// 数字    NumberFormat nf = new NumberFormat("#.00");    wcf = new WritableCellFormat(nf);   } else if (type == CellType.DATE || type == CellType.DATE_FORMULA) {// 日期    jxl.write.DateFormat df = new jxl.write.DateFormat(      "yyyy-MM-dd hh:mm:ss");    wcf = new jxl.write.WritableCellFormat(df);   } else {    WritableFont wf = new WritableFont(WritableFont.TIMES, 10,      WritableFont.NO_BOLD, false);// 最后一个为是否italic    wcf = new WritableCellFormat(wf);   }   // 对齐方式   wcf.setAlignment(Alignment.CENTRE);   wcf.setVerticalAlignment(VerticalAlignment.CENTRE);   // 边框   wcf.setBorder(Border.LEFT, BorderLineStyle.THIN);   wcf.setBorder(Border.BOTTOM, BorderLineStyle.THIN);   wcf.setBorder(Border.RIGHT, BorderLineStyle.THIN);   // 背景色   wcf.setBackground(Colour.WHITE);   wcf.setWrap(true);// 自动换行  } catch (WriteException e) {   e.printStackTrace();  }  return wcf; } public InputStream getInputExcel(String path){ InputStream is = null;try {is = new FileInputStream(path);//写入到FileInputStream Workbook wb = Workbook.getWorkbook(is); //得到工作薄   Sheet st = wb.getSheet(0);//得到工作薄中的第一个工作表 System.out.println(st.getRows()+"-----------"+st.getColumns()); for(int i = 0;i<st.getRows();i++){ for(int j = 0;j<st.getColumns();j++){ Cell cell=st.getCell(j,i);//得到工作表的第一个单元格,即A1 (行，列) String content=cell.getContents();//getContents()将Cell中的字符转为字符串 System.out.println(content+"content"+i+"  "+j); } }  wb.close();//关闭工作薄 is.close();//关闭输入流 } catch (Exception e) {e.printStackTrace();}return is; }   /**  * 打开文件看看  *   * @param exePath  * @param filePath  */ public void openExcel(String exePath, String filePath) {  Runtime r = Runtime.getRuntime();  String cmd[] = { exePath, filePath };  try {   r.exec(cmd);  } catch (Exception e) {   e.printStackTrace();  } } public static void main(String[] args) {  String[] titles = { "学号", "姓名", "语文", "数学", "英语", "总分" };  DowloadExcelUtil jxl = new DowloadExcelUtil();  String filePath = "D:/test2.xls";  List<String[]> list = new ArrayList<String[]>();;  String[] s1 = null ;  for(int i=0;i<20;i++){  s1 = new String[] { "20020100"+i, "张三2222"+i, "100",     "60", "100", "260"};  list.add(s1);  }  jxl.createExcelFile(filePath, "成绩单", titles,list); jxl.readDataFromExcel(new File(filePath), 0);  jxl.openExcel("D://Program Files//Kingsoft//WPS Office Professional//office6//et.EXE",filePath);     }}

 

 

"../../office/task/downloadExcel.action?fileName="+fileName+"&filePath="+filePath);