导出Excel通用模块设计(修订版)
/**
* 导出Excel文件
*
* @param title
* String 导出文件的名字
* @param t_headList
* List 表头信息 表头名字——
* fieldname,字段名字——field,对齐方式——align,值left,right；
* 字段类型——fieldtype,值2-NUMERIC，12—VARCHAR，91—DATE，,数据参数——pattern
* 宽度——width
* @param dataList
* List 数据集合
* **/
public void xls(String title,List t_headList, List dataList) {
try {
HttpServletResponse response = getResponse();
ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
jxl.write.WritableWorkbook wwb = Workbook.createWorkbook(byteOut);
jxl.write.WritableSheet ws = wwb.createSheet(title, 0);
// 设置冻结单元格
ws.setRowView(0, 25);// 行高
// putRowHead(ws, 0, t_headList);// 在第一行插入表头信息
WritableFont font10 = new WritableFont(WritableFont.TIMES, 10,
WritableFont.BOLD, false);
WritableCellFormat hwcf = new WritableCellFormat(font10);
hwcf.setWrap(true);//自动换行
// 水平居中
hwcf.setAlignment(jxl.format.Alignment.CENTRE);
// 垂直居中
hwcf.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
// 全边框
hwcf.setBorder(jxl.format.Border.ALL,jxl.format.BorderLineStyle.THIN);
for (int i = 0; t_headList!=null&&i < t_headList.size(); i++) {
Map v = (Map) t_headList.get(i);
String name = (String) v.get("FIELDNAME");
java.math.BigDecimal width=(java.math.BigDecimal)v.get("WIDTH");
Label cell = new Label(i, 0, "" + name, hwcf);
CellFormat cf=cell.getCellFormat();
ws.addCell(cell);
if(width==null||"".equals(width))
ws.setColumnView(i, name.length() * 2 + 2); // 根据表头字数设置单元格 列, 宽
else
ws.setColumnView(i, width.intValue());//根据规定的宽度设置宽度
}
// 9号 粗体
WritableFont font9 = new WritableFont(WritableFont.TIMES, 9,
WritableFont.NO_BOLD, false);
DecimalFormat df2 = (DecimalFormat) DecimalFormat.getInstance();// 格式化数字实例
List list_wcf=new ArrayList();
for (int k = 0; t_headList!=null&&k < t_headList.size(); k++) {
Map map = (Map) t_headList.get(k);
String align = (String) map.get("ALIGN");
int fieldtype=Integer.parseInt(map.get("FIELDTYPE").toString());
String pattern = (String) map.get("PATTERN");
WritableCellFormat wcf =null;
jxl.write.DateFormat df =null;
jxl.write.NumberFormat nf =null;
if(91 == fieldtype&&pattern!=null){
df=new jxl.write.DateFormat(pattern);
wcf=new WritableCellFormat(font9,df);
}else if(fieldtype > 1 && fieldtype < 9 && fieldtype != 7&&pattern!=null){
nf=new jxl.write.NumberFormat(pattern);
wcf=new WritableCellFormat(font9,nf);
}else
wcf=new WritableCellFormat(font9);
wcf.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
wcf.setWrap(true);
// 全边框
wcf.setBorder(jxl.format.Border.ALL,jxl.format.BorderLineStyle.THIN);
if ("right".equals(align))
wcf.setAlignment(jxl.format.Alignment.RIGHT);
else if("center".equals(align))
wcf.setAlignment(jxl.format.Alignment.CENTRE);
// else if ("left".equals(align))
// wcf.setAlignment(jxl.format.Alignment.LEFT);
list_wcf.add(wcf);
}
for (int i = 0; i < dataList.size(); i++) {
Map
ws.setRowView(i + 1, 15);// 行高
for (int k = 0; t_headList!=null&&k < t_headList.size(); k++) {
Map map = (Map) t_headList.get(k);
WritableCellFormat wcf = (WritableCellFormat)list_wcf.get(k);
String field = (String) map.get("FIELD");
int fieldtype=9;
if(map.get("FIELDTYPE")!=null)
fieldtype = Integer.parseInt(map.get("FIELDTYPE").toString());
String pattern = (String) map.get("PATTERN");
int p = field.trim().lastIndexOf(" ");
if (p > 0)
field = field.substring(p + 1, field.length());// 字段取别名
Object val = v.get(field);
if (91 == fieldtype && val != null && pattern!=null) {// 日期
try {
// System.out.println(val);
// val = getCurrentTime((Date) val, pattern);// 日期格式化输入样式
jxl.write.DateTime labelDTF = new jxl.write.DateTime(k, i + 1, (Date)val,wcf);
ws.addCell(labelDTF);
} catch (Exception e) {
e.printStackTrace();
System.out.println("日期格式化失败！");
Label cell = new Label(k, i + 1, "日期格式化失败", wcf);
ws.addCell(cell);
}
}else if (fieldtype > 1 && fieldtype < 9 && fieldtype != 7) {// 数字类型{
if (val ==null || "".equals(val.toString())) val="0.0";
try {
jxl.write.Number labelNF = new jxl.write.Number(k, i + 1, Double.valueOf(val.toString()), wcf);
ws.addCell(labelNF);
} catch (Exception e) {
e.printStackTrace();
System.out.println("数字格式化失败！");
Label cell = new Label(k, i + 1, "数字格式化失败", wcf);
ws.addCell(cell);
}
}else{
if (val != null) {
Label cell = new Label(k, i + 1, val.toString(), wcf);
ws.addCell(cell);
} else {
Label cell = new Label(k, i + 1, null, wcf);
ws.addCell(cell);
}
}
}
}
wwb.write();
wwb.close();
// 输出文件名字编码
String agent = getRequest().getHeader("USER-AGENT");
if (null != agent && -1 != agent.indexOf("MSIE")) {
title = java.net.URLEncoder.encode(title, "UTF-8").replace("+",
" ");
} else if (null != agent && -1 != agent.indexOf("Firefox")) {
title = new String(title.getBytes("UTF-8"), "iso8859-1");
} else if (null != agent && -1 != agent.indexOf("Safari")) {
title = java.net.URLEncoder.encode(title, "UTF-8").replace("+",
" ");
}
response.setContentType("application/xls");
String exportname = title + "_"
+ this.getCurrentTime(new Date(), "yyyy_MM_dd") + ".xls";
response.addHeader("Content-Disposition", "attachment; filename=\""
+ exportname + "\"");
byte[] bytes = byteOut.toByteArray();
response.setContentLength(bytes.length);
ServletOutputStream sos = response.getOutputStream();
sos.write(bytes, 0, bytes.length);
sos.flush();
sos.close();
} catch (Exception e) {
e.printStackTrace();
}
}
配置表头数据库设计
URL varchar2 (100) 请求地址 Action + '_' + method
Field varchar2 (20) 字段代码
FieldName Nvarchar2(50) 字段名称 Null
FieldType Number(3) 字段类型 12 2-number,12- varchar2,91-Date
Align varchar2 (10) 对齐方式 center left,center,right
Pattern varchar2 (10) 输出样式参数 Null 如：yyyy-mm-dd，#,###
Width Number(3) 列宽度 Null