Java JSP页面导出Excel

来源：互联网发布：呀安拉乎呀阿拉伯歌曲编辑：程序博客网时间：2024/05/29 12:01

JSP中：

//单击"导出"按钮时
   function exportData(){
    var dispNo=$("#dispNo").val();
    var dispName=$("#dispName").val();
    var inWh=$("#inWh").val();
    var outWh=$("#outWh").val();
    var beginTime=$("#beginTime").val();
    var endTime=$("#endTime").val();
    var confirmType=$("#confirmSelectType").val();
    var action="${pageContext.request.contextPath}/kgBuDispatchformAction!exportData.ilf?   dispNo="+dispNo+"&dispName="+dispName+"&inWh="+inWh+"&outWh="+outWh+"&beginTime="+beginTime+"&endTime="+endTime+"&confirmType="+confirmType;
    document.forms[0].action = action;
    document.forms[0].submit();
   }

Action中：

public void exportData() throws IOException{
   KgBuDispatchform f = new KgBuDispatchform();
   f.setDispNo(getRequest().getParameter("dispNo"));
   f.setDispName(getRequest().getParameter("dispName"));
   f.setOutWh(getRequest().getParameter("outWh"));
   f.setInWh(getRequest().getParameter("inWh"));
   f.setBeginTime(getRequest().getParameter("beginTime"));
   f.setEndTime(getRequest().getParameter("endTime"));
   String confirmType=getRequest().getParameter("confirmType");
   if(confirmType.equals("1")){
    f.setIsOut(1);
   }else if(confirmType.equals("2")){
    f.setIsIn(1);
   }
   export(f);
}

public void export(KgBuDispatchform dispatch){
   super.getResponse().setContentType("octets/stream");
   String excelName = "调拨单信息表";
   try {
  //转码防止乱码
  super.getResponse().addHeader("Content-Disposition", "attachment;filename="+new String( excelName.getBytes("gb2312"), "ISO8859-1" )+".xls");
   } catch (UnsupportedEncodingException e1) {
   // TODO Auto-generated catch block
   e1.printStackTrace();
   }
      ExportExcel<BaseKgBuDispatchform> ex2 = new ExportExcel<BaseKgBuDispatchform>();
      String[] headers2 = { "调拨单编号", "调拨单名称", "调出仓库", "调入仓库", "出库确认标识","入库确认标识" };
      List<BaseKgBuDispatchform> dataset2 = new ArrayList<BaseKgBuDispatchform>();
      try {
          //List<BaseKgBuDispatchform> formList = kgBuDispatchformService.listByHQL(" select t.dispNo,t.dispName,t.outWh,t.inWh,t.isOut,t.isIn from KgBuDispatchform t");
          List<BaseKgBuDispatchform> formList = kgBuDispatchformService.listByObject(dispatch);
       Iterator iterator = formList.iterator();
          /*while(iterator.hasNext()){//你返回的结果集都封装到了Object数组中。
           Object[] obj = (Object[])iterator.next();
           BaseKgBuDispatchform f = new KgBuDispatchform();
           f.setDispNo(obj[0].toString());
           f.setDispName(obj[1].toString());
           f.setOutWh(obj[2].toString());
           f.setInWh(obj[3].toString());
           if(null==obj[4]){
            f.setIsOut(0);
           }else{
            f.setIsOut(Integer.parseInt(obj[4].toString()));
           }
           if(null==obj[5]){
            f.setIsIn(0);
           }else{
            f.setIsIn(Integer.parseInt(obj[5].toString()));
           }
           dataset2.add(f);
          } */
       while(iterator.hasNext()){
        BaseKgBuDispatchform f = (BaseKgBuDispatchform) iterator.next();
        //调入仓库名称
        String inWh = kgDicWarehouseService.getKgDicWarehouse(Long.valueOf(f.getInWh())).getName();
        f.setInWh(inWh);
        String outWh = kgDicWarehouseService.getKgDicWarehouse(Long.valueOf(f.getOutWh())).getName();
        f.setOutWh(outWh);
        dataset2.add(f);
       }
          String[] strs={"dispNo","dispName","outWh","inWh","isOut","isIn"};
          OutputStream out2 = super.getResponse().getOutputStream();
          ex2.exportExcel(headers2, dataset2, out2,strs);
          out2.close();
          //JOptionPane.showMessageDialog(null, "导出成功!");
      } catch (FileNotFoundException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
      } catch (IOException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
      }
}

Excel导出工具类：

package com.inspur.kcgl.export.service;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFClientAnchor;
import org.apache.poi.hssf.usermodel.HSSFComment;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFPatriarch;
import org.apache.poi.hssf.usermodel.HSSFRichTextString;
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.hssf.util.HSSFColor;
import com.inspur.common.basic.BaseAction;
public class ExportExcel<T> extends BaseAction{
public void exportExcel(Collection<T> dataset, OutputStream out,String[] strs) {
           exportExcel("测试POI导出EXCEL文档", null, dataset, out, "yyyy-MM-dd",strs);
       }

       public void exportExcel(String[] headers, Collection<T> dataset,
               OutputStream out,String[] strs) {
           exportExcel("测试POI导出EXCEL文档", headers, dataset, out, "yyyy-MM-dd",strs);
       }

       public void exportExcel(String[] headers, Collection<T> dataset,
               OutputStream out, String pattern,String[] strs) {
           exportExcel("测试POI导出EXCEL文档", headers, dataset, out, pattern,strs);
       }
       public void exportExcel(String title, String[] headers,
               Collection<T> dataset, OutputStream out, String pattern,String[] strs) {
           // 声明一个工作薄
           HSSFWorkbook workbook = new HSSFWorkbook();

           // 生成一个表格
           HSSFSheet sheet = workbook.createSheet(title);
           // 设置表格默认列宽度为15个字节
           sheet.setDefaultColumnWidth(15);
           // 生成一个样式
           HSSFCellStyle style = workbook.createCellStyle();
           // 设置这些样式
           style.setFillForegroundColor(HSSFColor.SKY_BLUE.index);
           style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
           style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
           style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
           style.setBorderRight(HSSFCellStyle.BORDER_THIN);
           style.setBorderTop(HSSFCellStyle.BORDER_THIN);
           style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
           // 生成一个字体
           HSSFFont font = workbook.createFont();
           font.setColor(HSSFColor.VIOLET.index);
           font.setFontHeightInPoints((short) 12);
           font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
           // 把字体应用到当前的样式
           style.setFont(font);
           // 生成并设置另一个样式
           HSSFCellStyle style2 = workbook.createCellStyle();
           style2.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index);
           style2.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
           style2.setBorderBottom(HSSFCellStyle.BORDER_THIN);
           style2.setBorderLeft(HSSFCellStyle.BORDER_THIN);
           style2.setBorderRight(HSSFCellStyle.BORDER_THIN);
           style2.setBorderTop(HSSFCellStyle.BORDER_THIN);
           style2.setAlignment(HSSFCellStyle.ALIGN_CENTER);
           style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
           // 生成另一个字体
           HSSFFont font2 = workbook.createFont();
           font2.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
           // 把字体应用到当前的样式
           style2.setFont(font2);

           // 声明一个画图的顶级管理器
           HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
           // 定义注释的大小和位置,详见文档
           HSSFComment comment = patriarch.createComment(new HSSFClientAnchor(0,
                   0, 0, 0, (short) 4, 2, (short) 6, 5));
            // 设置注释内容
            comment.setString(new HSSFRichTextString("可以在POI中添加注释！"));
            // 设置注释作者，当鼠标移动到单元格上是可以在状态栏中看到该内容.
            comment.setAuthor("leno");

            // 产生表格标题行
            HSSFRow row = sheet.createRow(0);
            for (int i = 0; i < headers.length; i++) {
                HSSFCell cell = row.createCell(i);
                cell.setCellStyle(style);
                HSSFRichTextString text = new HSSFRichTextString(headers[i]);
                cell.setCellValue(text);
            }

            // 遍历集合数据，产生数据行
            Iterator<T> it = dataset.iterator();
            int index = 0;
            while (it.hasNext()) {
                index++;
                row = sheet.createRow(index);
                T t = (T) it.next();
                // 利用反射，根据javabean属性的先后顺序，动态调用getXxx()方法得到属性值
               // Field[] fields = t.getClass().getDeclaredFields();
                Field[] fields = t.getClass().getSuperclass().getDeclaredFields(); //查询父类方法
                for (int i = 0; i < fields.length; i++) {
                 for(int j=0;j<strs.length;j++){
                  if(fields[i].getName().equals(strs[j])){
                   HSSFCell cell = row.createCell(j);
                      cell.setCellStyle(style2);
                      Field field = fields[i];
                      String fieldName = field.getName();
                      String getMethodName = "get"
                              + fieldName.substring(0, 1).toUpperCase()
                              + fieldName.substring(1);
                      try {
                          //Class tCls = t.getClass();
                       Class tCls = t.getClass().getSuperclass();//查询父类
                          Method getMethod = tCls.getMethod(getMethodName,new Class[] {});
                          Object value = getMethod.invoke(t, new Object[] {});
                          // 判断值的类型后进行强制类型转换
                          String textValue = null;
                          // if (value instanceof Integer) {
                          // int intValue = (Integer) value;
                          // cell.setCellValue(intValue);
                          // } else if (value instanceof Float) {
                          // float fValue = (Float) value;
                          // textValue = new HSSFRichTextString(
                          // String.valueOf(fValue));
                          // cell.setCellValue(textValue);
                          // } else if (value instanceof Double) {
                          // double dValue = (Double) value;
                          // textValue = new HSSFRichTextString(
                          // String.valueOf(dValue));
                          // cell.setCellValue(textValue);
                          // } else if (value instanceof Long) {
                          // long longValue = (Long) value;
                          // cell.setCellValue(longValue);
                          // }
                          if (value instanceof Boolean) {
                              boolean bValue = (Boolean) value;
                              textValue = "男";
                              if (!bValue) {
                                  textValue = "女";
                              }
                          } else if (value instanceof Date) {
                              Date date = (Date) value;
                              SimpleDateFormat sdf = new SimpleDateFormat(pattern);
                              textValue = sdf.format(date);
                          } else if (value instanceof byte[]) {
                              // 有图片时，设置行高为60px;
                              row.setHeightInPoints(60);
                              // 设置图片所在列宽度为80px,注意这里单位的一个换算
                              sheet.setColumnWidth(i, (short) (35.7 * 80));
                              // sheet.autoSizeColumn(i);
                              byte[] bsValue = (byte[]) value;
                              HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0,
                                      1023, 255, (short) 6, index, (short) 6, index);
                              anchor.setAnchorType(2);
                              patriarch.createPicture(anchor, workbook.addPicture(
                                      bsValue, HSSFWorkbook.PICTURE_TYPE_JPEG));
                          } else {
                              // 其它数据类型都当作字符串简单处理
                           if(value!=null){
                            textValue = value.toString();
                           }

                          }
                          // 如果不是图片数据，就利用正则表达式判断textValue是否全部由数字组成
                          if (textValue != null) {
                              Pattern p = Pattern.compile("^//d+(//.//d+)?{1}quot;");
                              Matcher matcher = p.matcher(textValue);
                              if (matcher.matches()) {
                                  // 是数字当作double处理
                                  cell.setCellValue(Double.parseDouble(textValue));
                              } else {
                                  HSSFRichTextString richString = new HSSFRichTextString(textValue);
                                  HSSFFont font3 = workbook.createFont();
                                  font3.setColor(HSSFColor.BLUE.index);
                                  richString.applyFont(font3);
                                  cell.setCellValue(richString);
                              }
                          }
                      } catch (SecurityException e) {
                          // TODO Auto-generated catch block
                          e.printStackTrace();
                      } catch (NoSuchMethodException e) {
                          // TODO Auto-generated catch block
                          e.printStackTrace();
                      } catch (IllegalArgumentException e) {
                          // TODO Auto-generated catch block
                          e.printStackTrace();
                      } catch (IllegalAccessException e) {
                          // TODO Auto-generated catch block
                          e.printStackTrace();
                      } catch (InvocationTargetException e) {
                          // TODO Auto-generated catch block
                          e.printStackTrace();
                      } finally {
                          // 清理资源
                      }
                  }
                 }

               }

              }
            try {
                workbook.write(out);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

        }

}

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