一) 其实这个功能在spring2.x时代就提供了。一直没用过，今天在spring-mvc3.2.x的环境下试验了一次。还算简单易用。
二) 依赖。
spring依赖POI或jExcel来实现对excel输出的支持，前者是apache出品，貌似名气更大，本例使用第一个。
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.7</version>
</dependency>
三) spring提供了一个AbstractExcelView作为自己实现的视图的父类。实例代码如下。
package ying.car.view;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.poi.hssf.usermodel.HSSFDataFormat;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.joda.time.DateTime;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.servlet.view.document.AbstractExcelView;
import ying.car.binding.DateRange;
import ying.car.domain.RefuelingRecord;
public class RefuelingRecordExcelView extends AbstractExcelView {
private static final Logger LOGGER = LoggerFactory.getLogger(RefuelingRecordExcelView.class);
private static final DateFormat DATE_FORMAT = new SimpleDateFormat("yyyyMMdd");
@Override
@SuppressWarnings({"unchecked"})
protected void buildExcelDocument(
Map<String, Object> model, // MVC中的M就在这里了
HSSFWorkbook workbook,
HttpServletRequest request,
HttpServletResponse response) throws Exception
{
("yyyy/MM/dd"));
LOGGER.debug("end: {}", new DateTime(dr.getEnd()).toString("yyyy/MM/dd"));
}
}
HSSFSheet sheet = workbook.createSheet(DATE_FORMAT.format(dr.getStart()) + "-" + DATE_FORMAT.format(dr.getEnd()));
setColumnsWidth(sheet);
fillTableHeader(workbook, sheet);
fillTableBody(workbook, sheet, rrl);
}
private void setColumnsWidth(HSSFSheet sheet) {
final int[] warr = new int[] {
500, // <空>
4500, // 日期
4500, // 车辆
4500, // 燃油种类
4500, // 燃油单价
4500, // 加油方式
4500, // 加油量
3000, // 花费
12000 // 备注
};
for (int i = 0; i < warr.length; i ++) {
sheet.setColumnWidth(i, warr[i]);
}
}
// 填充表格头
private void fillTableHeader(HSSFWorkbook workbook, HSSFSheet sheet) {
final String[] contents = new String[] {
"日期",
"车辆",
"燃油种类",
"燃油单价(元/升)",
"加油方式",
"加油量(升)",
"花费(元)",
"备注"
};
int r = 1;
int c = 1;
CellStyle style = workbook.createCellStyle();
style.setFillForegroundColor(IndexedColors.YELLOW.getIndex()); // 填充黄色
style.setFillPattern(CellStyle.SOLID_FOREGROUND); // 填充方式
// 设置border
style.setBorderLeft(CellStyle.BORDER_THIN);
style.setBorderRight(CellStyle.BORDER_THIN);
style.setBorderTop(CellStyle.BORDER_THIN);
style.setBorderBottom(CellStyle.BORDER_THIN);
for (int i = 0; i < contents.length; i ++) {
Cell cell = getCell(sheet, r, c + i);
cell.setCellValue(contents[i]);
cell.setCellStyle(style);
}
}
private void fillTableBody(HSSFWorkbook workbook, HSSFSheet sheet, List<RefuelingRecord> records) {
// 通用style
CellStyle style = workbook.createCellStyle();
style.setFillForegroundColor(IndexedColors.WHITE.getIndex()); // 填充白色
style.setFillPattern(CellStyle.SOLID_FOREGROUND); // 填充方式
style.setBorderLeft(CellStyle.BORDER_THIN);
style.setBorderRight(CellStyle.BORDER_THIN);
style.setBorderTop(CellStyle.BORDER_THIN);
style.setBorderBottom(CellStyle.BORDER_THIN);
// 日期style
CellStyle dateStyle = workbook.createCellStyle();
dateStyle.setFillForegroundColor(IndexedColors.WHITE.getIndex()); // 填充白色
dateStyle.setFillPattern(CellStyle.SOLID_FOREGROUND); // 填充方式
dateStyle.setBorderLeft(CellStyle.BORDER_THIN);
dateStyle.setBorderRight(CellStyle.BORDER_THIN);
dateStyle.setBorderTop(CellStyle.BORDER_THIN);
dateStyle.setBorderBottom(CellStyle.BORDER_THIN);
dateStyle.setDataFormat(HSSFDataFormat.getBuiltinFormat("m/d/yy"));
int r = 2;
int c = 1;
Cell cell = null;
for (int i = 0; i < records.size(); i ++) {
RefuelingRecord rr = records.get(i);
// 日期
cell = getCell(sheet, r, c + 0);
if (rr.getDate() != null)
cell.setCellValue(rr.getDate());
cell.setCellStyle(dateStyle);
// 车辆
cell = getCell(sheet, r, c + 1);
if (rr.getVehicle().getNickname() != null)
cell.setCellValue(rr.getVehicle().getNickname());
cell.setCellStyle(style);
// 燃油种类
cell = getCell(sheet, r, c + 2);
if (rr.getGasType() != null) {
String s = null;
switch (rr.getGasType()) {
case _0: s = "0号柴油"; break;
case _93: s = "93号汽油"; break;
case _97: s = "97号汽油"; break;
case _98: s = "98号汽油"; break;
}
cell.setCellValue(s);
}
cell.setCellStyle(style);
// 单价
cell = getCell(sheet, r, c + 3);
if (rr.getPriceOfGas() != null)
cell.setCellValue(rr.getPriceOfGas());
cell.setCellStyle(style);
// 加油方式
cell = getCell(sheet, r, c + 4);
if (rr.getRefuelingType() != null) {
String s = null;
switch (rr.getRefuelingType()) {
case FIXED_CUBAGE:
s = "固定容积"; break;
case FIXED_MONEY:
s = "固定金额"; break;
case FULL:
s = "加满"; break;
}
cell.setCellValue(s);
}
cell.setCellStyle(style);
// 加油量
cell = getCell(sheet, r, c + 5);
if (rr.getCubageOfGas() != null)
cell.setCellValue(rr.getCubageOfGas());
cell.setCellStyle(style);
// 花费
cell = getCell(sheet, r, c + 6);
if (rr.getSumOfMoney() != null)
cell.setCellValue(rr.getSumOfMoney());
cell.setCellStyle(style);
// 备注
cell = getCell(sheet, r, c + 7);
if (rr.getComment() != null)
cell.setCellValue(rr.getComment());
cell.setCellStyle(style);
r ++;
}
}
}
cell.setCellStyle(style);
// 燃油种类
cell = getCell(sheet, r, c + 2);
if (rr.getGasType() != null) {
String s = null;
switch (rr.getGasType()) {
case _0: s = "0号柴油"; break;
case _93: s = "93号汽油"; break;
case _97: s = "97号汽油"; break;
case _98: s = "98号汽油"; break;
}
cell.setCellValue(s);
}
cell.setCellStyle(style);
// 单价
cell = getCell(sheet, r, c + 3);
if (rr.getPriceOfGas() != null)
cell.setCellValue(rr.getPriceOfGas());
cell.setCellStyle(style);
// 加油方式
cell = getCell(sheet, r, c + 4);
if (rr.getRefuelingType() != null) {
String s = null;
switch (rr.getRefuelingType()) {
case FIXED_CUBAGE:
s = "固定容积"; break;
case FIXED_MONEY:
s = "固定金额"; break;
case FULL:
s = "加满"; break;
}
cell.setCellValue(s);
}
cell.setCellStyle(style);
// 加油量
cell = getCell(sheet, r, c + 5);
if (rr.getCubageOfGas() != null)
cell.setCellValue(rr.getCubageOfGas());
cell.setCellStyle(style);
// 花费
cell = getCell(sheet, r, c + 6);
if (rr.getSumOfMoney() != null)
cell.setCellValue(rr.getSumOfMoney());
cell.setCellStyle(style);
// 备注
cell = getCell(sheet, r, c + 7);
if (rr.getComment() != null)
cell.setCellValue(rr.getComment());
cell.setCellStyle(style);
r ++;
}
}
}
四) Controller中返回逻辑视图名 (代码片段)
Java代码
@RequiresUser // 安全框架用元注释
@RequiresRoles({"ROLE_USER"})
@RequestMapping(value = "/list/excel", method = RequestMethod.GET)
public String listByExcel(
@DateRangeFormat(pattern = "yyyy-MM-dd") @RequestParam("dateRange") DateRange dateRange,
ModelMap modelMap
)
{
}
// 放入model
modelMap.put("dateRange", dateRange);
modelMap.put("refuelingRecordList", gasService.findRefuelingRecordByDateRange(currentUserId, dateRange));
return "refueling-record-list"; // 最终返回逻辑视图名
}
五) 为spring-mvc配置多个视图解析器。
<bean class="org.springframework.web.servlet.view.XmlViewResolver">
<property name="order" value="1" /> <!-- order很重要 -->
<property name="location" value="classpath:/META-INF/views.xml" />
</bean>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="order" value="9999" />
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
六) 效果图
1、上传EXCEL文件至后台服务器；
2、通过POI解析EXCEL文件；
3、把解析好的内容进行验证判断；
4、封装内容到POJO；
5、对POJO进行持久化。本回答被提问者采纳