1.导出excel工具类
package cn.kyxt.utils;
import java.io.FileOutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Map;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
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.ss.usermodel.HorizontalAlignment;
public class ExportExcel_two {
/**
* @功能:手工构建一个简单格式的Excel
*/
public static void createExcel(Map<String, List<String>> map, String[] strArray) {
// 第一步,创建一个webbook,对应一个Excel文件
HSSFWorkbook wb = new HSSFWorkbook();
// 第二步,在webbook中添加一个sheet,对应Excel文件中的sheet
HSSFSheet sheet = wb.createSheet("sheet1");
sheet.setDefaultColumnWidth(20);// 默认列宽
// 第三步,在sheet中添加表头第0行,注意老版本poi对Excel的行数列数有限制short
HSSFRow row = sheet.createRow((int) 0);
// 第四步,创建单元格,并设置值表头 设置表头居中
HSSFCellStyle style = wb.createCellStyle();
// 创建一个居中格式
style.setAlignment(HorizontalAlignment.CENTER);
// 添加excel title
HSSFCell cell = null;
for (int i = 0; i < strArray.length; i++) {
cell = row.createCell((short) i);
cell.setCellValue(strArray[i]);
cell.setCellStyle(style);
}
// 第五步,写入实体数据 实际应用中这些数据从数据库得到,list中字符串的顺序必须和数组strArray中的顺序一致
int i = 0;
for (String str : map.keySet()) {
row = sheet.createRow((int) i + 1);
List<String> list = map.get(str);
// 第四步,创建单元格,并设置值
for (int j = 0; j < strArray.length; j++) {
row.createCell((short) j).setCellValue(list.get(j));
}
// 第六步,将文件存到指定位置
try {
FileOutputStream fout = new FileOutputStream("C:/Users/whj/Desktop/" + new SimpleDateFormat("yyyyMMddHHmmss").format(new Date()).toString() +"合同审核信息"+".xls");
wb.write(fout);
fout.close();
} catch (Exception e) {
e.printStackTrace();
}
i++;
}
}
}
2.测试类
package cn.kyxt.utils;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
import cn.kyxt.dao.impl.HXXM.HTGL.HTSHDaoImpl;
import cn.kyxt.dao.inte.HXXM.HTGL.HTSH.HTSHDao;
import cn.kyxt.domain.hxxm.htgl.htsh.HTSH;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
/**
* 创建excel,写入数据,然后下载到本地
*
*/
public class TestExport_two {
public static void main(String[] args) {
Map<String, List<String>> memberMap = getStatistics();
String[] strArray = excelTitle();
ExportExcel_two.createExcel(memberMap, strArray);
}
private static Map<String, List<String>> getStatistics() {
HTSHDao htshDao = new HTSHDaoImpl();
List<HTSH> htshList = htshDao.Display();
Map<String, List<String>> map = new HashMap<String, List<String>>();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
for (int i = 0; i < htshList.size(); i++) {
ArrayList<String> htsh = new ArrayList<String>();
htsh.add(htshList.get(i).getHT_ID());
htsh.add(htshList.get(i).getHT_NAME());
htsh.add(String.valueOf(htshList.get(i).getHT_TYPEID()));
htsh.add(String.valueOf(htshList.get(i).getFZR_TYPEID()));
htsh.add(htshList.get(i).getFZR_NAME());
htsh.add(htshList.get(i).getFZR_PHONE());
htsh.add(htshList.get(i).getCJDW_ID());
htsh.add(String.valueOf( htshList.get(i).getXK_ID()));
htsh.add(htshList.get(i).getHT_JFDW());
htsh.add(htshList.get(i).getCYR_NAME());
htsh.add(String.valueOf(htshList.get(i).getHT_HTZT()));
htsh.add(htshList.get(i).getHT_HTJE());
htsh.add(sdf.format(htshList.get(i).getHT_KSRQ()));
htsh.add(sdf.format(htshList.get(i).getHT_ZZRQ()));
htsh.add(htshList.get(i).getHT_XMZH());
htsh.add(String.valueOf(htshList.get(i).getHT_GLKS()));
htsh.add(htshList.get(i).getHT_CDBH());
htsh.add(String.valueOf(htshList.get(i).getXMLBJB_ID()));
htsh.add(String.valueOf(htshList.get(i).getXMJB_ID()));
htsh.add(String.valueOf(htshList.get(i).getXMFL_ID()));
htsh.add(String.valueOf(htshList.get(i).getXMLY_ID()));
htsh.add(String.valueOf(htshList.get(i).getHT_YJLB()));
htsh.add(String.valueOf(htshList.get(i).getHT_HZXS()));
htsh.add(String.valueOf(htshList.get(i).getGMJJHY_DL()));
htsh.add(String.valueOf(htshList.get(i).getGMJJHY_ZL()));
htsh.add(String.valueOf(htshList.get(i).getHT_SHIJMB()));
htsh.add(htshList.get(i).getHT_BZ());
htsh.add(String.valueOf(htshList.get(i).getHT_ZZXS()));
htsh.add(String.valueOf(htshList.get(i).getHT_SHZT()));
map.put("数据", htsh);
}
return map;
}
/**
* 创建excel title
*/
public static String[] excelTitle() {
String[] strArray = {"合同编号", "合同名称", "合同类别", "负责人类型", "负责人姓名",
"负责人电话","承接单位","学科","甲方单位","参与人姓名",
"合同状态","合同金额","开始日期","终止日期","项目账号",
"管理科室","存档编号","项目类别级别","项目级别","项目分类",
"项目来源","研究类别","合作形式","国民经济行业(大类)","国民经济行业(中类)",
"社会经济目标","备注","组织形式","审核状态"};
return strArray;
}
}