数据库数据以Excel的方式导出

import java.io.Serializable;
import java.util.List;

import com.cfets.cwap.s.util.db.TableColumn;
/**
 *
* @ClassName: ParamVO
* <b>Copyright 2018 中国XX中心 All Rights Reserved</b>
* @Description: TODO
* @author liuhanlin
* @date 2018年8月21日 下午2:15:45
*
 */

public class ParamVO implements Serializable{

	/**
	* @Fields serialVersionUID : TODO
	*/
	private static final long serialVersionUID = -1613650619973876968L;
//	@TableColumn(name = "DL_TCKT_CD")
	private String floorName;
	private String productCode;
	private String userCode;
	private String statu;
	public String getFloorName() {
		return floorName;
	}
	public void setFloorName(String floorName) {
		this.floorName = floorName;
	}
	public String getProductCode() {
		return productCode;
	}
	public void setProductCode(String productCode) {
		this.productCode = productCode;
	}
	public String getUserCode() {
		return userCode;
	}
	public void setUserCode(String userCode) {
		this.userCode = userCode;
	}
	public String getStatu() {
		return statu;
	}
	public void setStatu(String statu) {
		this.statu = statu;
	}

}

  2、Excel导出方法
  /**
   * @description:excel导出方法
   * @param fileName 导出的excel名称
   * @param titleColumn 导出的excel列对应的VO类的属性名称数组（VO类属性名称）
   * @param titleNames 导出的excel列标题数组（表头）
   * @param columnWidth 导出的excel列宽
   * @param dataList 传入的数据的列表
   * @return String
   * @throws MscQueryException
   * @author liuhanlin
   * @create on 2016年12月29日
   */
  @SuppressWarnings({ "rawtypes", "unchecked" })
  public static String excelExport(HttpServletResponse response,
      String[] titleColumn, String[] titleNames,
      List<?> dataList) throws MscQueryException {
	  logger.info("titleNames:{}, titleColumn:{}", titleNames, titleColumn);
	  long begin =  System.currentTimeMillis();

      ServletOutputStream out = null;
      WritableWorkbook workbook = null;
      try {
        out = response.getOutputStream();
    	//本地测试
		FileOutputStream outTest = new FileOutputStream(new File("C:/Users/Liuhl.LIUHL-PC/Desktop/190/Imix") + "/"
				+ "xxx.xls");
        workbook = Workbook.createWorkbook(outTest);
        if(CollectionUtils.isEmpty(dataList)){
        	WritableSheet sheet = workbook.createSheet("sheet1", 0);
        	for (int i = 0; i < titleColumn.length; i++) {
                Label label = new Label(i, 0, titleNames[i]);
                sheet.addCell(label);
              }
        }else{
            int row = 650;
            int total = dataList.size();
            int page = 0;//sheet页数

            if(total % row == 0){
            	page = total/row;
            }else{
            	page = total/row+1;
            }
            for(int k = 0;k < page;k++){

            	 WritableSheet sheet = workbook.createSheet("sheet"+(k+1), 0);

            	 //写入表头内容
                 for (int i = 0; i < titleNames.length; i++) {
                   Label label = new Label(i, 0, titleNames[i]);
                   sheet.addCell(label);
                 }

                 if (!CollectionUtils.isEmpty(dataList)) {
                	List<?> list = new ArrayList();

                	int cols = 0;
                	if(k == page-1){
    	           		 cols = total % row;
    	           		 list = dataList.subList(k*row, total);
    	           	} else{
    	           		 cols = row;
    	           		 list = dataList.subList(k*row, row*(k+1));
    	           	}

                   for (int i = 1; i <= cols; i++) {

                     Object obj = list.get(i - 1);
                     Class c = obj.getClass();

                     for (int j = 0; j < titleColumn.length; j++) {
                       String columnName = titleColumn[j];
                       String title = Character.toUpperCase(columnName.charAt(0))
                           + columnName.substring(1);
                       String methodName = "get" + title;
                       Method method = c.getDeclaredMethod(methodName);
                       String data = "null".equalsIgnoreCase(method.invoke(obj)+"") ? "--" : method
                           .invoke(obj).toString();
                       Label label = new Label(j, i, data);
                       sheet.addCell(label);
                     }
                   }
                 }
            }
        }
        workbook.write();
      } catch (Exception e) {
    	  logger.error("导出excel失败!", e);
        throw new MscQueryException("导出excel失败!" + e);
      } finally {
        try {
          workbook.close();
          out.close();
        } catch (IOException e) {
        	 logger.error("导出excel失败!", e);
        }
      }
      long end =  System.currentTimeMillis();
      logger.debug("导出XXX数据时间为：{}",(end-begin));
    return null;
  }

3、测试类
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.collections.CollectionUtils;
import org.junit.runner.RunWith;
import org.springframework.context.annotation.Configuration;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.cfets.cwap.s.spi.SpiConfig;
import com.cfets.cwap.s.spi.SpiConfig.Env;
import com.cfets.ts.s.deal.exception.MscQueryException;
import com.cfets.ts.u.dealmgmt.entity.vo.ParamVO;
import com.cfets.ts.u.dealmgmt.service.ExcelExportUtil;
import com.cfets.ts.u.dealmgmt.service.FxDealMapService;
import com.cfets.ts.u.dealmgmt.util.GenerateExcelService;
import com.google.gson.Gson;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations ="/cwap-spring-context-app.xml")
//@ContextConfiguration(locations = { "classpath:/cwap-spring-context-app.xml"})
@Configuration
public class Test {
	FxDealMapService service = new FxDealMapService();
	static {
		SpiConfig.env = Env.TEST;
	}
	@org.junit.Test
	public void test(){
		List<Map<String, Object>> lists = service.queryMapData();
		List<ParamVO> list = new ArrayList<ParamVO>();
		for (Map<String, Object> map : lists) {
			for (Map.Entry<String, Object> entry : map.entrySet()) {
				ParamVO vo = new ParamVO();
				vo.setFloorName((String)map.get("floorName"));
				vo.setProductCode((String)map.get("productCode"));
				vo.setUserCode((String)map.get("userCode"));
				vo.setStatu((String)map.get("statu"));
				list.add(vo);
			}
		}
		System.err.println(new Gson().toJson(list));
		 MockHttpServletResponse response = new MockHttpServletResponse();
		 String titleColumn[] = {"floorName", "productCode","userCode","statu"};
		 String titleNames[] = {"floorName", "productCode", "userCode", "statu"};
			try {
				ExcelExportUtil.excelExport(response, titleColumn, titleNames, list);
			} catch (MscQueryException e) {
				e.printStackTrace();
			}
		}

备注：（jexcelapi-jxl.jar）