首先,我有一个jsp页面:
这是ExcelUtil类:
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<script type="application/javascript">
function download(){
var url="http://localhost:8080/wdxend/excelexport/testDownload";
window.open(url);
}
</script>
<body>
<input type="button" value="导出数据" οnclick="download()"/>
</body>
</html>
很久不玩,都不记得jsp怎么配得了。
<bean id="jspViewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/static/"/>
<property name="suffix" value=".jsp"/>
</bean>
@RequestMapping("testjsp")
public ModelAndView test(){
ModelAndView modelAndView = new ModelAndView();
modelAndView.setViewName("status");
return modelAndView;
}
这是一个下载的Controller
@RequestMapping("testDownload")
public String testDownload(HttpServletRequest request, HttpServletResponse response/*, @RequestBody PieceCostParam pieceCostParam*/) throws Exception{
PieceCostParam pieceCostParam = new PieceCostParam();
PieceCostQuery pieceCostQuery = new PieceCostQuery();
pieceCostQuery.setCompanyName("杭州电子放假大学");
pieceCostParam.setPieceCostQuery(pieceCostQuery);
return excelExportService.testDownload(request, response, pieceCostParam);
}
@Override
public String testDownload(HttpServletRequest request, HttpServletResponse response, PieceCostParam pieceCostParam) throws Exception{
String fileName="excel文件";
//填充projects数据
List<PieceCostVO> projects=costRelatedService.getAllPieceCost(pieceCostParam);
List<Map<String,Object>> list=createExcelRecord(projects);
String columnNames[]={"序号","机构名称","购买时间","数据包名称","购买线索条数","线索单价","线索收费"};//列名
String keys[] = {"id","name","purcahseTime","packName","num","cost","sumcost"};//map中的key
ByteArrayOutputStream os = new ByteArrayOutputStream();
try {
ExcelUtil.createWorkBook(list,keys,columnNames).write(os);
} catch (IOException e) {
e.printStackTrace();
}
byte[] content = os.toByteArray();
InputStream is = new ByteArrayInputStream(content);
// 设置response参数,可以打开下载页面
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;
// Simple read/write loop.
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;
}
private List<Map<String, Object>> createExcelRecord(List<PieceCostVO> 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);
PieceCostVO 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);
mapValue.put("name", project.getCompanyName());
mapValue.put("purcahseTime", project.getPurchaseTime());
mapValue.put("packName", project.getDataPackName());
mapValue.put("num", project.getDataSum());
mapValue.put("cost", project.getDataCost());
mapValue.put("sumcost", project.getCostSum());
listmap.add(mapValue);
}
return listmap;
}
这是ExcelUtil类:
/**
* 导出Excel文档工具类
* [@author](http://my.oschina.net/arthor) 那位先生
* [@date](http://my.oschina.net/u/2504391) 2014-8-6
* */
public class ExcelUtil {
/**
* 创建excel文档,
* [@param](http://my.oschina.net/u/2303379) list 数据
* @param keys list中map的key数组集合
* @param columnNames excel的列名
* */
public static Workbook createWorkBook(List<Map<String, Object>> list, String []keys, String columnNames[]) {
// 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));
}
// 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());
// Font f3=wb.createFont();
// f3.setFontHeightInPoints((short) 10);
// f3.setColor(IndexedColors.RED.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);
}
//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;
}
}
差不多就是这样啦,你要是直接把代码拷过去肯定会报错啦,因为你没有我的实体类,在你找到我的代码之前肯定知道excel的操作啦,那这些你应该也能看懂,要是不知道,建议还是先看看excel的操作吧。