Jquery构建表单+SpringMVC实现导出Excel报表功能

1.前端代码

var form=$("<form>");//定义一个form表单
form.attr("style","display:none");
form.attr("target","");
form.attr("method","post");
form.attr("action",systemUrl+"exportTakeOutCount");

form.append($('<input>', {name: 'endTime', value: endTime}));
form.append($('<input>', {name: 'pageNumber', value: pageNumber}));
form.append($('
4000
<input>', {name: 'placeId', value: placeId}));
$("body").append(form) //将表单放置在web中  ;
form.submit();//表单提交

2 后端代码 

后端采用的SSH框架，Excel的读写采用Apach POI（java处理Office文档的类库）

（1）接口代码

@RequestMapping("/system/exportTakeOutCount")
public void exportTakeOutCount(HttpServletRequest request, HttpServletResponse response, String requestOrder,
String cardInnerNumb)
throws Exception {
Map map = getTakeOutCount( requestOrder, cardInnerNumb);
String title = "取餐记录表";
String[] rowsName = new String[]{"序号","卡外号","取餐时间","客户姓名","客户手机号","客户状态"};//excel的列名
List<Object[]> dataListObject = new ArrayList<Object[]>();
Object[] objs = null;
List<Object> dataObjectList = (List<Object>) map.get("dataList");//获取从数据查询到的数据
for(int i=0;i<dataObjectList.size();i++){//数据拼装
Map<String,String> dataMap = (Map<String, String>) dataObjectList.get(i);
objs = new Object[rowsName.length];
objs[0] = i;

objs[1] = dataMap.get("SERIAL_NUMBER");
objs[2] = dataMap.get("CREATE_TIME");
objs[3] = dataMap.get("NAME");
objs[4] = dataMap.get("LOGIN_NAME");
objs[5] = dataMap.get("STATUS");
dataListObject.add(objs);
}
ExportExcel exportExcel = new ExportExcel(title, rowsName, dataListObject, response);
exportExcel.export();
（2） 导出Excel的工具类ExportExcel
package com.sp.mobile.server.action.device;

import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletResponse;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFFont;
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.CellRangeAddress;
import org.apache.poi.hssf.util.HSSFColor;

public class ExportExcel {
private String title;
//导出表的列名
private String[] rowName ;

private List<Object[]> dataList = new ArrayList<Object[]>();

HttpServletResponse response;

//构造方法，传入要导出的数据
public ExportExcel(String title,String[] rowName,List<Object[]> dataList,HttpServletResponse response){
this.dataList = dataList;
this.rowName = rowName;
this.title = title;
this.response = response;
}

/*
* 导出数据
* */
public void export() throws Exception{
try{
HSSFWorkbook workbook = new HSSFWorkbook(); // 创建工作簿对象
HSSFSheet sheet = workbook.createSheet(title); // 创建工作表

// 产生表格标题行
HSSFRow rowm = sheet.createRow(0);
HSSFCell cellTiltle = rowm.createCell(0);

//sheet样式定义【getColumnTopStyle()/getStyle()均为自定义方法 - 在下面 - 可扩展】
HSSFCellStyle columnTopStyle = this.getColumnTopStyle(workbook);//获取列头样式对象
HSSFCellStyle style = this.getStyle(workbook); //单元格样式对象

sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, (rowName.length-1)));
cellTiltle.setCellStyle(columnTopStyle);
cellTiltle.setCellValue(title);

// 定义所需列数
int columnNum = rowName.length;
HSSFRow rowRowName = sheet.createRow(2); // 在索引2的位置创建行(最顶端的行开始的第二行)

// 将列头设置到sheet的单元格中
for(int n=0;n<columnNum;n++){
HSSFCell cellRowName = rowRowName.createCell(n); //创建列头对应个数的单元格
cellRowName.setCellType(HSSFCell.CELL_TYPE_STRING); //设置列头单元格的数据类型
HSSFRichTextString text = new HSSFRichTextString(rowName
);
cellRowName.setCellValue(text); //设置列头单元格的值
cellRowName.setCellStyle(columnTopStyle); //设置列头单元格样式
}

//将查询出的数据设置到sheet对应的单元格中
for(int i=0;i<dataList.size();i++){

Object[] obj = dataList.get(i);//遍历每个对象
HSSFRow row = sheet.createRow(i+3);//创建所需的行数

for(int j=0; j<obj.length; j++){
HSSFCell cell = null; //设置单元格的数据类型
if(j == 0){
cell = row.createCell(j,HSSFCell.CELL_TYPE_NUMERIC);
cell.setCellValue(i+1);
}else{
cell = row.createCell(j,HSSFCell.CELL_TYPE_STRING);
if(!"".equals(obj[j]) && obj[j] != null){
cell.setCellValue(obj[j].toString()); //设置单元格的值
}
}
cell.setCellStyle(style); //设置单元格样式
}
}
//让列宽随着导出的列长自动适应
for (int colNum = 0; colNum < columnNum; colNum++) {
int columnWidth = sheet.getColumnWidth(colNum) / 256;
for (int rowNum = 0; rowNum < sheet.getLastRowNum(); rowNum++) {
HSSFRow currentRow;
//当前行未被使用过
if (sheet.getRow(rowNum) == null) {
currentRow = sheet.createRow(rowNum);
} else {
currentRow = sheet.getRow(rowNum);
}
if (currentRow.getCell(colNum) != null) {
HSSFCell currentCell = currentRow.getCell(colNum);
if (currentCell.getCellType() == HSSFCell.CELL_TYPE_STRING) {
int length = currentCell.getStringCellValue().getBytes().length;
if (columnWidth < length) {
columnWidth = length;
}
}
}
}
if(colNum == 0){
sheet.setColumnWidth(colNum, (columnWidth-2) * 256);
}else{
sheet.setColumnWidth(colNum, (columnWidth+4) * 256);
}
}

if(workbook !=null){
try
{
String fileName = "Excel-" + String.valueOf(System.currentTimeMillis()).substring(4, 13) + ".xls";
String headStr = "attachment; filename=\"" + fileName + "\"";
//response = getResponse();
response.setContentType("APPLICATION/OCTET-STREAM");
response.setHeader("Content-Disposition", headStr);
OutputStream out = response.getOutputStream();
workbook.write(out);
}
catch (IOException e)
{
e.printStackTrace();
}
}

}catch(Exception e){
e.printStackTrace();
}

}

/*
* 列头单元格样式
*/
public HSSFCellStyle getColumnTopStyle(HSSFWorkbook workbook) {

// 设置字体
HSSFFont font = workbook.createFont();
//设置字体大小
font.setFontHeightInPoints((short)11);
//字体加粗
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
//设置字体名字
font.setFontName("Courier New");
//设置样式;
HSSFCellStyle style = workbook.createCellStyle();
//设置底边框;
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
//设置底边框颜色;
style.setBottomBorderColor(HSSFColor.BLACK.index);
//设置左边框;
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
//设置左边框颜色;
style.setLeftBorderColor(HSSFColor.BLACK.index);
//设置右边框;
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
//设置右边框颜色;
style.setRightBorderColor(HSSFColor.BLACK.index);
//设置顶边框;
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
//设置顶边框颜色;
style.setTopBorderColor(HSSFColor.BLACK.index);
//在样式用应用设置的字体;
style.setFont(font);
//设置自动换行;
style.setWrapText(false);
//设置水平对齐的样式为居中对齐;
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
//设置垂直对齐的样式为居中对齐;
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);

return style;

}

/*
* 列数据信息单元格样式
*/
public HSSFCellStyle getStyle(HSSFWorkbook workbook) {
// 设置字体
HSSFFont font = workbook.createFont();
//设置字体大小
//font.setFontHeightInPoints((short)10);
//字体加粗
//font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
//设置字体名字
font.setFontName("Courier New");
//设置样式;
HSSFCellStyle style = workbook.createCellStyle();
//设置底边框;
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
//设置底边框颜色;
style.setBottomBorderColor(HSSFColor.BLACK.index);
//设置左边框;
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
//设置左边框颜色;
style.setLeftBorderColor(HSSFColor.BLACK.index);
//设置右边框;
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
//设置右边框颜色;
style.setRightBorderColor(HSSFColor.BLACK.index);
//设置顶边框;
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
//设置顶边框颜色;
style.setTopBorderColor(HSSFColor.BLACK.index);
//在样式用应用设置的字体;
style.setFont(font);
//设置自动换行;
style.setWrapText(false);
//设置水平对齐的样式为居中对齐;
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
//设置垂直对齐的样式为居中对齐;
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);

return style;

}
}