工具類——簡單匯出excel
阿新 • • 發佈：2019-01-02
環境：spring+mvc+mybatis+maven
工具類：
import java.io.FileOutputStream; 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; public class ExportExcel { /** * <p class="detail"> * 功能：簡單匯出excel * </p> * @author zhaoyang * @date 2017年6月16日 * @param sheetName sheet名稱 * @param head excel第一行單元格名稱 * @param list 實體類資料 * @param path 下載路徑 */ public static void outExcel(String sheetName,String[] head,List<Map<String,Object>> list,String path) throws Exception{ // 第一步，建立一個webbook，對應一個Excel檔案 HSSFWorkbook wb = new HSSFWorkbook(); // 第二步，在webbook中新增一個sheet,對應Excel檔案中的sheet HSSFSheet sheet = wb.createSheet(sheetName); // 第三步，在sheet中新增表頭第0行,注意老版本poi對Excel的行數列數有限制short HSSFRow row = sheet.createRow((int) 0); // 第四步，建立單元格，並設定值表頭 設定表頭居中 HSSFCellStyle style = wb.createCellStyle(); style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 建立一個居中格式 //HSSFCell cell = row.createCell(0); String[] datakey=new String[head.length]; for(int i=0,m=1;i<head.length;i++,m++){ HSSFCell cell = row.createCell(i); cell.setCellValue(head[i]); cell.setCellStyle(style); datakey[i]=m+""; } // 第五步，寫入實體資料 實際應用中這些資料從資料庫得到， for (int i = 0; i < list.size(); i++){ HSSFRow datarow = sheet.createRow((int)i+1); // row = sheet.createRow((int) i + 1); // 第四步，建立單元格，並設定值 for(int j=0;j<head.length;j++){ //System.out.println(list.get(i).get("1")); //System.out.print(list.get(i).get(datakey[j]).toString()); datarow.createCell(j).setCellValue(list.get(i).get(datakey[j]).toString()); } } // 第六步，將檔案存到指定位置 FileOutputStream fout = new FileOutputStream(path); wb.write(fout); fout.close(); } }
Mapper.xml <!-- web:匯出保險訂單 "1"、"2"表示excel對應的第一行單元格的每一列--> <select id="exportOrderSecureList" parameterType="java.util.Map" resultType="java.util.Map"> select a.company as "1", a.insurance_type as "2", a.car_brand as "3", DATE_FORMAT(a.insure_time,'%Y-%m-%d') as "4", a.name as "5", a.phone as "6", DATE_FORMAT(a.order_time,'%Y-%m-%d %T') as "7" from tb_order_secure a where 1=1 <if test="company !=null and company !=''"> <![CDATA[ and a.company=#{company} ]]> </if> <if test="insuranceType !=null and insuranceType !=''"> <![CDATA[ and a.insurance_type=#{insuranceType} ]]> </if> <if test="carBrand !=null and carBrand !=''"> <![CDATA[ and INSTR(a.car_brand,#{carBrand})>0 ]]> </if> <if test="name !=null and name !=''"> <![CDATA[ and INSTR(a.name,#{name})>0 ]]> </if> <if test="phone !=null and phone !=''"> <![CDATA[ and INSTR(a.phone,#{phone})>0 ]]> </if> order by a.order_time desc </select><!-- web:匯出保險訂單 "1"、"2"表示excel對應的第一行單元格的每一列--> <select id="exportOrderSecureList" parameterType="java.util.Map" resultType="java.util.Map"> select a.company as "1", a.insurance_type as "2", a.car_brand as "3", DATE_FORMAT(a.insure_time,'%Y-%m-%d') as "4", a.name as "5", a.phone as "6", DATE_FORMAT(a.order_time,'%Y-%m-%d %T') as "7" from tb_order_secure a where 1=1 <if test="company !=null and company !=''"> <![CDATA[ and a.company=#{company} ]]> </if> <if test="insuranceType !=null and insuranceType !=''"> <![CDATA[ and a.insurance_type=#{insuranceType} ]]> </if> <if test="carBrand !=null and carBrand !=''"> <![CDATA[ and INSTR(a.car_brand,#{carBrand})>0 ]]> </if> <if test="name !=null and name !=''"> <![CDATA[ and INSTR(a.name,#{name})>0 ]]> </if> <if test="phone !=null and phone !=''"> <![CDATA[ and INSTR(a.phone,#{phone})>0 ]]> </if> order by a.order_time desc </select>
controller.java
@Autowired
private UploadFileOss uploadFileOss; //簡單檔案上傳的工具類
/**
* <p class="detail">
* 功能：匯出保險訂單excel
* </p>
* @author zhaoyang
* @date 2017年6月17日
* @param request
* @param company
* @param insuranceType
* @param carBrand
* @param name
* @param phone
* @return
*/
@RequestMapping(value = "/exportOrderSecureList.web", produces = { "application/json;charset=utf-8" },method=RequestMethod.POST)
@ResponseBody
public ResponseObj exportOrderSecureList(HttpServletRequest request,String minTime,String maxTime,String company,String insuranceType,String carBrand,String name,String phone){
ResponseObj obj = new ResponseObj(ViewShowEnums.INFO_SUCCESS.getStatus(), ViewShowEnums.INFO_SUCCESS.getDetail());
if(company.indexOf("請選擇保險公司")>=0){
obj.setShowMessage("請選擇保險公司");
obj.setStatus(ViewShowEnums.ERROR_FAILED.getStatus());
return obj;
}
Map<String, Object> m =new HashMap<>();
m.put("company", company);
if(insuranceType.indexOf("請選擇險種")>=0){
}else{
m.put("insuranceType", insuranceType);
}
m.put("carBrand", carBrand);
m.put("name", name);
m.put("phone", phone);
m.put("minTime", minTime);
m.put("maxTime", maxTime);
List<Map<String, Object>> list = orderSecureService.exportOrderSecureList(m);
if(list!=null && !list.isEmpty()){
}else{
obj.setShowMessage("匯出資料為空,請選擇保險公司");
obj.setStatus(ViewShowEnums.ERROR_FAILED.getStatus());
return obj;
}
Date date=new Date();
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
String nowTime=dateFormat.format(date);
String sheetName="保險訂單";
String[] head={"保險公司","險種","車型","投保時間","姓名","聯絡電話","下單時間"};
//String path="C:\\保險訂單匯出"+nowTime+".xls";
//path位置在伺服器裡
String path = request.getSession().getServletContext().getRealPath("/static/保險訂單匯出"+nowTime+".xls");
ExportExcel ee=new ExportExcel(); //匯出excel的工具類
String url="";
if(list!=null && !list.isEmpty()){
try {
ee.outExcel(sheetName, head, list, path);
url=uploadFileOss.samplesUpload(path, "保險訂單匯出"+nowTime+".xls"); //簡單檔案上傳的工具類,上傳成功後返回阿里雲的URL
System.out.println(url);
} catch (Exception e) {
obj.setShowMessage("匯出失敗");
obj.setStatus(ViewShowEnums.ERROR_FAILED.getStatus());
return obj;
}
}
obj.setData(url);
return obj;
}