/**
* @param list 查询的列表集合(转范型之后的集合)
* @param fileName 资源文件名
* @param headArray 头部数组
* @param widthArray 设置excel每列的宽度
* @param cols 显示多少列减1
* @param c 反射的类（通过它可以访问类中的属性以及方法）
* @return
* @throws Exception
*/
@SuppressWarnings("rawtypes")
public static String export(List list,String fileName,String[] headArray,int[] width,int cols,Class<?> c,HttpServletResponse response)throws Exception{
try{
/*********创建excel阶段*********/
String exportfileName = fileName +"-"+ DateUtil.today() ;
//设置响应方式
response.setContentType("application/vnd.ms-excel;charset=utf-8");
// String name = URLEncoder.encode(exportfileName, "UTF-8");
String name=new String((exportfileName).getBytes("gbk"),"iso8859-1");
response.setHeader("Content-Disposition", "attachment;filename="+name);
//创建execl第一行数句(标题)
// 标题字体
jxl.write.WritableFont wfc = new jxl.write.WritableFont(
jxl.write.WritableFont.COURIER, 13, jxl.write.WritableFont.NO_BOLD, true);
jxl.write.WritableCellFormat wcfFC = new jxl.write.WritableCellFormat(wfc);
wcfFC.setAlignment(jxl.format.Alignment.CENTRE);
wcfFC.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
wcfFC.setBackground(Colour.GREY_50_PERCENT);
//创建一个excel文档
WritableWorkbook book = Workbook.createWorkbook(response.getOutputStream());
//创建sheet工作表+ ".xls"
WritableSheet sheet = book.createSheet(exportfileName+"数据报表.xls", 0);
//创建字体对象
WritableFont font = new WritableFont(WritableFont.createFont("黑体"),13,WritableFont.NO_BOLD);
WritableFont font2 = new WritableFont(WritableFont.createFont("黑体"),12,WritableFont.NO_BOLD);
//创建格式化对象
WritableCellFormat format = new WritableCellFormat();
format.setFont(font);//设置字体
format.setAlignment(Alignment.CENTRE);//设置居中
format.setVerticalAlignment(VerticalAlignment.CENTRE);
format.setBackground(Colour.GRAY_25);//设置背景色
WritableCellFormat format2 = new WritableCellFormat();
format2.setFont(font2);//设置字体
format2.setAlignment(Alignment.CENTRE);//设置居中
format2.setVerticalAlignment(VerticalAlignment.CENTRE);
/***********开始写第二行已下的数据************/
for (int i = 0; i < headArray.length; i++) {
sheet.addCell(new Label(i,cols,headArray[i],format));//添加表头
sheet.setColumnView(i, width[i]);
}
//得到类中所有的属性
Field[] fields=c.getDeclaredFields();
for (int i = 0; i < list.size(); i++) {
Object object=list.get(i);
for (int j = 0; j < cols; j++) {
String sname = fields[j].getName(); // 获取属性的名字
sname = sname.substring(0, 1).toUpperCase() + sname.substring(1); // 将属性的首字符大写，方便构造get，set方法
if(fields[j].getGenericType().toString().equals("class java.lang.String")){
Method m = (Method) object.getClass().getMethod("get" +sname);
String val = (String) m.invoke(object);
if (val != null) {
sheet.addCell(new Label(j,i+(cols+1),val,format2));
}else{
sheet.addCell(new Label(j,i+(cols+1),"",format2));
}
}
// 如果类型是Integer
if (fields[j].getGenericType().toString().equals("class java.lang.Integer")) {
Method m = (Method) object.getClass().getMethod("get" +sname);
Integer val = (Integer) m.invoke(object);
if (val != null) {
sheet.addCell(new Label(j,i+(cols+1),val+"",format2));
}else{
sheet.addCell(new Label(j,i+(cols+1),0+"",format2));
}
}
// 如果类型是Double
if (fields[j].getGenericType().toString().equals("class java.lang.Double")) {
Method m = (Method) object.getClass().getMethod("get" + sname);
Double val = (Double) m.invoke(object);
if (val != null) {
sheet.addCell(new Label(j,i+(cols+1),val+"",format2));
} else{
sheet.addCell(new Label(j,i+(cols+1),0.0+"",format2));
}
}
// 如果类型是Boolean 是封装类
if (fields[j].getGenericType().toString().equals("class java.lang.Boolean")) {
Method m = (Method) object.getClass().getMethod(sname);
Boolean val = (Boolean) m.invoke(object);
if (val != null) {
sheet.addCell(new Label(j,i+(cols+1),val+"",format2));
} else{
sheet.addCell(new Label(j,i+(cols+1),"",format2));
}
}
// 如果类型是boolean 基本数据类型不一样 这里有点说名如果定义名是 isXXX的 那就全都是isXXX的
// 反射找不到getter的具体名
if (fields[j].getGenericType().toString().equals("boolean")) {
Method m = (Method) object.getClass().getMethod(sname);
Boolean val = (Boolean) m.invoke(object);
if (val != null) {
sheet.addCell(new Label(j,i+(cols+1),val+"",format2));
} else{
sheet.addCell(new Label(j,i+(cols+1),"",format2));
}
}
// 如果类型是Short
if (fields[j].getGenericType().toString().equals("class java.lang.Short")) {
Method m = (Method) object.getClass().getMethod("get" + sname);
Short val = (Short) m.invoke(object);
if (val != null) {
sheet.addCell(new Label(j,i+(cols+1),val+"",format2));
}else{
sheet.addCell(new Label(j,i+(cols+1),0+"",format2));
}
}
// 如果类型是Date
if (fields[j].getGenericType().toString().equals("class java.util.Date")) {
Method m = (Method) object.getClass().getMethod("get" + sname);
Date val = (Date) m.invoke(object);
SimpleDateFormat sfEnd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String time= sfEnd.format(val);
if (val != null) {
sheet.addCell(new Label(j,i+(cols+1),time+"",format2));
}else{
sheet.addCell(new Label(j,i+(cols+1),"",format2));
}
}
}
}
// 加入标题
sheet.mergeCells(0, 0, cols-1, cols-1);
sheet.addCell(new jxl.write.Label(0, 0, fileName, wcfFC));
book.write();//写execel文档
book.close();
return exportfileName;
}catch(Exception e){
e.printStackTrace();
System.out.println("存储失败");
return "false";
}
}
2.控制器中的写法。
例：/********* 创建excel阶段 *********/
// 创建第二行数据
String head[] = { "活动", "参与人数", "日登陆玩家数", "互动参与度" }; //导出的列标题
int[] width = new int[] { 25, 20, 20, 20 };
ExportData.export(得到对象的集合, 导出的文件标题, head, width, 4（列标题的个数）, GetActiveData.class, response);
3.jsp//显示导出excel的dialog
function userExcelDialogShow(){
if ($('input[name=nPlatformID]').val()=="" || $('input[name=nPlatformID]').val()==null) {
$('#msg1').text('平台类型不能为空！');
return false;
}else{
$('#msg1').text('*');
}
if ($('input[name=nAreaID]').val()=="" || $('input[name=nAreaID]').val()==null) {
$('#msg2').text('所在区域不能为空！');
return false;
}else{
$('#msg2').text('*');
}
$('#userFrm').form('submit',{
url:'./userExports.do',
success:function(request){
if(request==false){
$.messager.show({
title:'Error',
msg:'导出失败',
timeout:5000,
showType:'slide'
});
}
}
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