Spring mvc进行Excel导出

/**
*
*参数省略
**/

String fileName=new SimpleDateFormat("yyyy-MM-dd").format(new Date())+"异常账号筛选";
//调用service获取数据(可以是数据库或者其他地方)
List<AccountModel> accounts =accountService.gets();
//获取Excel表头对应的字段
List<Map<String,Object>> list=createExcelRecord(accounts);
String columnNames[]={"序号","P用户名","Passport","用户名2","Passport2","test3","test4"};//列名
String keys[]={"id","UserName","Passport","Name1","passport","test3date","test4date"};//map中的key
ByteArrayOutputStream os = new ByteArrayOutputStream();
try {
ExcelUtils.createWorkBook(list,keys,columnNames).write(os);
} catch (IOException e) {
e.printStackTrace();
}
byte[] content = os.toByteArray();
InputStream is = new ByteArrayInputStream(content);
response.reset();
response.setContentType("application/vnd.ms-excel;charset=utf-8");
response.setHeader("Content-Disposition", "attachment;filename="+ new String((fileName + ".xls").getBytes(), "iso-8859-1"));
ServletOutputStream out = response.getOutputStream();
BufferedInputStream bis = null;
BufferedOutputStream bos = null;
try {
bis = new BufferedInputStream(is);
bos = new BufferedOutputStream(out);
byte[] buff = new byte[2048];
int bytesRead;
while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
bos.write(buff, 0, bytesRead);
}
} catch (final IOException e) {
throw e;
} finally {
if (bis != null)
bis.close();
if (bos != null)
bos.close();
}
return null;
}
//自定义模型和Excel表格的对应关系
private List<Map<String, Object>> createExcelRecord(List<AccountModel> projects) {
List<Map<String, Object>> listmap = new ArrayList<Map<String, Object>>();
Map<String, Object> map = new HashMap<String, Object>();
map.put("sheetName", "sheet1");
listmap.add(map);
AccountModel project=null;
for (int j = 0; j < projects.size(); j++) {
project=projects.get(j);
Map<String, Object> mapValue = new HashMap<String, Object>();
mapValue.put("id", j+1);
mapValue.put("UserName", project.getUserName());
mapValue.put("Passport", project.gepPassport());
mapValue.put("Name2", project.getName());
mapValue.put("passport2", project.getpassport());
mapValue.put("test3", project.gettest3());
mapValue.put("test4", project.gettest4()==1?"已解决":"未解决");
listmap.add(mapValue);
}
return listmap;
}
}

//导出Excel
$(document).on("click", ".btn-excel", function() {
var ch= $("#type");
var type=[];
ch.each(function(){
type.push($(this).val());
});
var operation=[];
var getoperations=$("#operation");
getoperations.each(function(){
operation.push($(this).val());
})
var statue=$("#statue").val();
var username=$("#username").val();
var usernameLimit=$("#namelimit").val();
var passport=$("#passport").val();
var passportlimit=$("#passportlimit").val();
var url="/excel/download?type="+type+"&operation="+operation+"&statue="+statue+"&username="+username+"&username_limit="+usernameLimit+"&passport="+passport+"&passport_limit="+passportlimit;
window.open(url);
});

public class ExcelUtils {

/**
* 创建excel文档，
* @param list 数据
* @param keys list中map的key数组集合
* @param columnNames excel的列名
* @param comment  是否加批注
* */
public static Workbook createWorkBook(List<Map<String, Object>> list,String []keys,String columnNames[],boolean commentOrNot) {

//批注内容(报表使用)
List<String> parames = new ArrayList<String>();
parames.add("1");
parames.add("批注1");
parames.add("批注21");
parames.add("批注3");
parames.add("批注4");

// 创建excel工作簿
Workbook wb = new HSSFWorkbook();
// 创建第一个sheet（页），并命名
Sheet sheet = wb.createSheet(list.get(0).get("sheetName").toString());
// 手动设置列宽。第一个参数表示要为第几列设；，第二个参数表示列的宽度，n为列高的像素数。
for(int i=0;i<keys.length;i++){
sheet.setColumnWidth((short) i, (short) (35.7 * 150));
}
//冻结第一行
sheet.createFreezePane(0,1,0,1);
// 创建第一行
Row row = sheet.createRow((short) 0);

// 创建两种单元格格式
CellStyle cs = wb.createCellStyle();
CellStyle cs2 = wb.createCellStyle();

// 创建两种字体
Font f = wb.createFont();
Font f2 = wb.createFont();

// 创建第一种字体样式（用于列名）
f.setFontHeightInPoints((short) 10);
f.setColor(IndexedColors.BLACK.getIndex());
f.setBoldweight(Font.BOLDWEIGHT_BOLD);

// 创建第二种字体样式（用于值）
f2.setFontHeightInPoints((short) 10);
f2.setColor(IndexedColors.BLACK.getIndex());

// 设置第一种单元格的样式（用于列名）
cs.setFont(f);
cs.setBorderLeft(CellStyle.BORDER_THIN);
cs.setBorderRight(CellStyle.BORDER_THIN);
cs.setBorderTop(CellStyle.BORDER_THIN);
cs.setBorderBottom(CellStyle.BORDER_THIN);
cs.setAlignment(CellStyle.ALIGN_CENTER);

// 设置第二种单元格的样式（用于值）
cs2.setFont(f2);
cs2.setBorderLeft(CellStyle.BORDER_THIN);
cs2.setBorderRight(CellStyle.BORDER_THIN);
cs2.setBorderTop(CellStyle.BORDER_THIN);
cs2.setBorderBottom(CellStyle.BORDER_THIN);
cs2.setAlignment(CellStyle.ALIGN_CENTER);
//设置列名
for(int i=0;i<columnNames.length;i++){
Cell cell = row.createCell(i);
cell.setCellValue(columnNames[i]);
cell.setCellStyle(cs);
if(commentOrNot){//根据业务判断是否需要批注<span id="transmark"></span>
Drawing patr = sheet.createDrawingPatriarch();
ClientAnchor anchor = patr.createAnchor(0, 0, 0, 0, 5, 1, 8, 3);//创建批注位置
Comment comment = patr.createCellComment(anchor);//创建批注
comment.setString(new HSSFRichTextString(parames.get(i)));//设置批注内容
comment.setVisible(true);//设置批注默认显示
cell.setCellComment(comment);
}
}
//设置每行每列的值
for (short i = 1; i < list.size(); i++) {
// Row 行,Cell 方格 , Row 和 Cell 都是从0开始计数的
// 创建一行，在页sheet上
Row row1 = sheet.createRow((short) i);
// 在row行上创建一个方格
for(short j=0;j<keys.length;j++){
Cell cell = row1.createCell(j);
cell.setCellValue(list.get(i).get(keys[j]) == null?" ": list.get(i).get(keys[j]).toString());
cell.setCellStyle(cs2);
}
}
return wb;
}