导出——springboot+poi实现指定模板导出功能
导出——springboot+poi实现指定模板导出功能
1.先查询到需要导出的数据
@GetMapping("/writeExcel")
@ApiOperation(value = "导出企业信息", notes = "导出企业信息", httpMethod = "GET", produces = "application/json")
public Rest writeExcel(HttpServletResponse response){
//查询所需要导出的企业信息
List<EnterpriseExport> enterpriseValueObjects = enterpriseService.selectAll();
//进行导出
enterpriseService.Export(enterpriseValueObjects,response);
return ok();
}
/**
* 查询所有企业信息 用于导出
*/
List<EnterpriseExport> selectAll();
#实现类
@Override
public List<EnterpriseExport> selectAll() {
return enterpriseMapper.selectAll();
}
#mapper
/**
* 查询所有企业信息 用于导出
*/
List<EnterpriseExport> selectAll();
#SQL
<!--List<EnterpriseValueObject> selectAll();-->
<select id="selectAll" resultType="com.safesoft.domain.eval.enterprise.entity.EnterpriseExport">
SELECT DISTINCT
t0.ID,
t0.enterprise_name,
t0.area_type,
t0.final_score,
t0.action_times,
( SELECT is_target FROM eval_area_govern t1 WHERE t1.delete_flag = '0' AND t1.enterprise_id = t0.ID ORDER BY ID DESC LIMIT 1 ) IsTarget,
( SELECT is_noticed FROM eval_area_govern t1 WHERE t1.delete_flag = '0' AND t1.enterprise_id = t0.ID ORDER BY ID DESC LIMIT 1 ) IsNoticed,
( SELECT is_remove FROM eval_area_govern t1 WHERE t1.delete_flag = '0' AND t1.enterprise_id = t0.ID ORDER BY ID DESC LIMIT 1 ) IsRemove,
( SELECT is_sign FROM eval_area_govern t1 WHERE t1.delete_flag = '0' AND t1.enterprise_id = t0.ID ORDER BY ID DESC LIMIT 1 ) IsSign,
( SELECT score FROM eval_area_govern t1 WHERE t1.delete_flag = '0' AND t1.enterprise_id = t0.ID ORDER BY ID DESC LIMIT 1 ) AreaScore,
( SELECT score FROM eval_build_info t2 WHERE t2.delete_flag = '0' AND t2.enterprise_id = t0.ID ORDER BY ID DESC LIMIT 1 ) BuildScore,
( SELECT score FROM eval_economic_info t3 WHERE t3.delete_flag = '0' AND t3.enterprise_id = t0.ID ORDER BY ID DESC LIMIT 1 ) EconomicScore,
( SELECT score FROM eval_environmental_info t5 WHERE t5.delete_flag = '0' AND t5.enterprise_id = t0.ID ORDER BY ID DESC LIMIT 1 ) EnvironmentalScore,
(select score from eval_fire_control_info t6 where t6.delete_flag = '0' and t6.enterprise_id = t0.id ORDER BY id desc limit 1) FireControlScore,
(select score from eval_illegal_build_info t7 where t7.delete_flag = '0' and t7.enterprise_id = t0.id ORDER BY id desc limit 1) IllegalScore,
(select score from eval_market_supervision t8 where t8.delete_flag = '0' and t8.enterprise_id = t0.id ORDER BY id desc LIMIT 1) MarketScore,
(select score from eval_safety_info t9 where t9.delete_flag = '0' and t9.enterprise_id=t0.id ORDER BY id desc limit 1) SafetyScore,
(select score from eval_social_security t10 where t10.delete_flag = '0' and t10.enterprise_id=t0.id ORDER BY id desc limit 1) SocialScore
FROM
eval_enterprise_info t0
ORDER BY
final_score DESC
</select>
2.进行导出
//进行导出
enterpriseService.Export(enterpriseValueObjects,response);
/**
* 导出的业务逻辑
*/
void Export(List<EnterpriseExport> enterpriseValueObjects, HttpServletResponse response);
@Override
public void Export(List<EnterpriseExport> enterpriseValueObjects, HttpServletResponse response) {
XSSFWorkbook wb =null;
try {
// excel模板路径
Resource resource = new ClassPathResource("企业综合评价平台数据0203.xlsx");
FileInputStream fis = new FileInputStream(resource.getFile());
wb = new XSSFWorkbook(fis);
// 读取了模板内所有sheet内容
XSSFSheet sheet = wb.getSheetAt(0);
// 在相应的单元格进行赋值
int rowIndex = 2;
int j = 1;
for (EnterpriseExport enterpriseValueObject : enterpriseValueObjects) {
XSSFRow row = sheet.getRow(rowIndex);
if (null == row) {
row = sheet.createRow(rowIndex);
}
XSSFCell cell0 = row.getCell(0);
if (null == cell0) {
cell0 = row.createCell(0);
}
cell0.setCellValue(j);// 标识
XSSFCell cell1 = row.getCell(1);
if (null == cell1) {
cell1 = row.createCell(1);
}
cell1.setCellValue(enterpriseValueObject.getEnterpriseName());
XSSFCell cell2 = row.getCell(2);
if (null == cell2) {
cell2 = row.createCell(2);
}
if (enterpriseValueObject.getAreaType() == null){
cell2.setCellValue(" ");
}else {
cell2.setCellValue(Optional.ofNullable(enterpriseValueObject.getAreaType()==1?"区内":"区外").orElse(" 1"));//
}
XSSFCell cell3 = row.getCell(3);
if (null == cell3) {
cell3 = row.createCell(3);
}
cell3.setCellValue(Optional.ofNullable(enterpriseValueObject.getFinalScore()).orElse(" "));
XSSFCell cell4 = row.getCell(4);
if (null == cell4) {
cell4 = row.createCell(4);
}
cell4.setCellValue(Optional.ofNullable(enterpriseValueObject.getActionTimes()).orElse(0));//
XSSFCell cell5 = row.getCell(5);
if (null == cell5) {
cell5 = row.createCell(5);
}
log.info("index:{}",rowIndex);
if ("1".equals(enterpriseValueObject.getIsTarget())){
enterpriseValueObject.setIsTarget("是");
}else {
enterpriseValueObject.setIsTarget(" ");
}
cell5.setCellValue(Optional.ofNullable(enterpriseValueObject.getIsTarget()).orElse(" ")); //是否为全域整治对象
XSSFCell cell6 = row.getCell(6);
if (null == cell6) {
cell6 = row.createCell(6);
}
//整治进度 1-告知 2-签约 3-拆除
if ("1".equals(enterpriseValueObject.getIsNoticed())){
if ("1".equals(enterpriseValueObject.getIsSign())){
if ("1".equals(enterpriseValueObject.getIsRemove())){
cell6.setCellValue("拆除");
}else {
cell6.setCellValue("签约");
}
}else {
cell6.setCellValue("告知");
}
}else {
cell6.setCellValue(" ");//整治进度
}
XSSFCell cell7 = row.getCell(7);
if (null == cell7) {
cell7 = row.createCell(7);
}
cell7.setCellValue(Optional.ofNullable(enterpriseValueObject.getAreaScore()).orElse(" "));//全域整治信息分数
XSSFCell cell8 = row.getCell(8);
if (null == cell8) {
cell8 = row.createCell(8);
}
cell8.setCellValue(Optional.ofNullable(enterpriseValueObject.getBuildScore()).orElse(" "));//
XSSFCell cell9 = row.getCell(9);
if (null == cell9) {
cell9 = row.createCell(9);
}
cell9.setCellValue(Optional.ofNullable(enterpriseValueObject.getEconomicScore()).orElse(" "));//
XSSFCell cell10 = row.getCell(10);
if (null == cell10) {
cell10 = row.createCell(10);
}
cell10.setCellValue(Optional.ofNullable(enterpriseValueObject.getEnvironmentalScore()).orElse(" "));//
XSSFCell cell11 = row.getCell(11);
if (null == cell11) {
cell11 = row.createCell(11);
}
cell11.setCellValue(Optional.ofNullable(enterpriseValueObject.getFireControlScore()).orElse(" "));//
XSSFCell cell12 = row.getCell(12);
if (null == cell12) {
cell12 = row.createCell(12);
}
cell12.setCellValue(Optional.ofNullable(enterpriseValueObject.getIllegalScore()).orElse(" "));//
XSSFCell cell13 = row.getCell(13);
if (null == cell13) {
cell13 = row.createCell(13);
}
cell13.setCellValue(Optional.ofNullable(enterpriseValueObject.getMarketScore()).orElse(" "));//
XSSFCell cell14 = row.getCell(14);
if (null == cell14) {
cell14 = row.createCell(14);
}
cell14.setCellValue(Optional.ofNullable(enterpriseValueObject.getSafetyScore()).orElse(" "));//
XSSFCell cell15 = row.getCell(15);
if (null == cell15) {
cell15 = row.createCell(15);
}
cell15.setCellValue(Optional.ofNullable(enterpriseValueObject.getSocialScore()).orElse(" "));//
rowIndex++;
j++;
}
//7.下载
ByteArrayOutputStream os = new ByteArrayOutputStream();
wb.write(os);
String fileName = "企业综合评价平台数据" + new Date().getTime() + ".xlsx";
new DownloadUtils().download(os, response, fileName);
} catch (Exception e) {
log.error("导出excel出现异常"+e);
}
}
3.用于导出的工具类
/**
* 用于 Excel下载的工具类
*/
public class DownloadUtils {
/**
*
* @param byteArrayOutputStream 输出字节流
* @param response
* @param returnName 输出到客户端的文件名
* @throws IOException
*/
public void download(ByteArrayOutputStream byteArrayOutputStream, HttpServletResponse response, String returnName) throws IOException {
//response.setContentType("application/octet-stream");
returnName = response.encodeURL(new String(returnName.getBytes(),"iso8859-1")); //保存的文件名,必须和页面编码一致,否则乱码
response.addHeader("Content-Disposition","attachment;filename="+returnName);
response.setContentLength(byteArrayOutputStream.size());
response.addHeader("Content-Length", "" + byteArrayOutputStream.size());
ServletOutputStream outputStream = response.getOutputStream(); //取得输出流
byteArrayOutputStream.writeTo(outputStream); //写到输出流
outputStream.flush(); //刷数据
byteArrayOutputStream.close(); //关闭
}
}