for (short i = 0; i < headers.length; i++) { HSSFCell cell = row.createCell(i); cell.setCellStyle(style); HSSFRichTextString text = new HSSFRichTextString(headers[i]); cell.setCellValue(text);//这行代码是给每个单元格赋值,注释后能正常运行,结果就是导出的EXCEL表格没有任何东西
}下面是报的错误,帮忙解决一下,在线等!
java.lang.NoSuchMethodError: org.apache.poi.hssf.usermodel.HSSFCell.setCellValue(Lorg/apache/poi/hssf/usermodel/HSSFRichTextString;)V
}下面是报的错误,帮忙解决一下,在线等!
java.lang.NoSuchMethodError: org.apache.poi.hssf.usermodel.HSSFCell.setCellValue(Lorg/apache/poi/hssf/usermodel/HSSFRichTextString;)V
cell.setCellStyle(style); }
改写成这样后不报错能往EXCEL表格中插入数据,
下面的代码是从数据库中得到一个集合从ACTION中传过来,要把这些数据导入到EXCEL表格中运行不报错,但就是插入不了数据。
//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(); for (short i = 0; i < fields.length; i++) { HSSFCell cell = row.createCell(i); cell.setCellStyle(style2); Field field = fields[i];
System.out.println(fields[i]+"llllllll"); String fieldName = field.getName(); String getMethodName = "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1); try { Class tCls = t.getClass(); 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 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 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+)?$"); 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);
System.out.println(textValue+"#########"); cell.setCellValue(textValue);//textValue值没问题
} } } catch (SecurityException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (NoSuchMethodException e) { // TODO Auto-generated catch block e.printStackTrace();