Javaはeasypeiを使って迅速に導入して導き出す実現を実現します。
概要
名前のeasypeiのような機能は、主な機能は簡単で、poiに接触したことがない人に簡単にExcel導入を書き出すことができます。エクスポートします。簡単な注釈とテンプレート言語（熟知した表現文法）によって、以前の複雑な書き方を完成します。
統合
pomに依存を取り入れると良いです。
エンティティクラス
名前のeasypeiのような機能は、主な機能は簡単で、poiに接触したことがない人に簡単にExcel導入を書き出すことができます。エクスポートします。簡単な注釈とテンプレート言語（熟知した表現文法）によって、以前の複雑な書き方を完成します。
統合
pomに依存を取り入れると良いです。
<!--easypoi-->
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-base</artifactId>
<version>3.0.3</version>
</dependency>
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-web</artifactId>
<version>3.0.3</version>
</dependency>
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-annotation</artifactId>
<version>3.0.3</version>
</dependency>
package cn.common.util;
import cn.afterturn.easypoi.excel.ExcelExportUtil;
import cn.afterturn.easypoi.excel.ExcelImportUtil;
import cn.afterturn.easypoi.excel.entity.ExportParams;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.enmus.ExcelType;
import cn.common.exception.ZXException;
import org.apache.poi.ss.usermodel.Workbook;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
/**
* @author huangy
* @date 2019/6/28 14:57
*/
public class EasyPoiUtil {
/**
* Excel， 。
*
* @param list
* @param title
* @param sheetName sheet
* @param pojoClass
* @param isCreateHeader
* @param fileName
* @param response
* @return
*/
public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName, boolean isCreateHeader, HttpServletResponse response){
ExportParams exportParams = new ExportParams(title, sheetName);
exportParams.setCreateHeadRows(isCreateHeader);
defaultExport(list, pojoClass, fileName, response, exportParams);
}
/**
* Excel
*/
public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass,String fileName, HttpServletResponse response){
defaultExport(list, pojoClass, fileName, response, new ExportParams(title, sheetName));
}
/**
* map sheet
* @param list
* @param fileName
* @param response
*/
public static void exportExcel(List<Map<String, Object>> list, String fileName, HttpServletResponse response){
defaultExport(list, fileName, response);
}
/**
*
* @param list
* @param pojoClass
* @param fileName
* @param response
* @param exportParams
*/
private static void defaultExport(List<?> list, Class<?> pojoClass, String fileName, HttpServletResponse response, ExportParams exportParams) {
Workbook workbook = ExcelExportUtil.exportExcel(exportParams,pojoClass,list);
ExcelExportUtil.closeExportBigExcel();
if (workbook != null);
downLoadExcel(fileName, response, workbook);
}
/**
* sheet
* @param list
* @param fileName
* @param response
*/
private static void defaultExport(List<Map<String, Object>> list, String fileName, HttpServletResponse response) {
Workbook workbook = ExcelExportUtil.exportExcel(list, ExcelType.HSSF);
ExcelExportUtil.closeExportBigExcel();
if (workbook != null);
downLoadExcel(fileName, response, workbook);
}
/**
* excel
* @param fileName
* @param response
* @param workbook
*/
private static void downLoadExcel(String fileName, HttpServletResponse response, Workbook workbook) {
try {
response.setCharacterEncoding("UTF-8");
response.setHeader("content-Type", "application/vnd.ms-excel");
response.setHeader("Content-Disposition",
"attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
workbook.write(response.getOutputStream());
} catch (IOException e) {
throw new ZXException(e.getMessage());
}
}
/**
*
* @param filePath
* @param titleRows
* @param headerRows
* @param pojoClass
* @param <T>
* @return
*/
public static <T> List<T> importExcel(String filePath,Integer titleRows,Integer headerRows, Class<T> pojoClass){
if (StringUtils.isBlank(filePath)){
return null;
}
ImportParams params = new ImportParams();
params.setTitleRows(titleRows);
params.setHeadRows(headerRows);
List<T> list = null;
try {
list = ExcelImportUtil.importExcel(new File(filePath), pojoClass, params);
}catch (NoSuchElementException e){
throw new ZXException(" ");
} catch (Exception e) {
e.printStackTrace();
throw new ZXException(e.getMessage());
}
return list;
}
/**
* MultipartFile
* @param file
* @param titleRows
* @param headerRows
* @param pojoClass
* @param <T>
* @return
*/
public static <T> List<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class<T> pojoClass){
if (file == null){
return null;
}
ImportParams params = new ImportParams();
params.setTitleRows(titleRows);
params.setHeadRows(headerRows);
List<T> list = null;
try {
list = ExcelImportUtil.importExcel(file.getInputStream(), pojoClass, params);
}catch (NoSuchElementException e){
throw new ZXException("excel ");
} catch (Exception e) {
throw new ZXException(e.getMessage());
}
return list;
}
}
エンティティクラス
public class BlackListExport {
@Excel(name = " ", width = 15, orderNum = "2")
private String name;
@Excel(name = " ", width = 10, orderNum = "1")
private String remark;
@Excel(name = " ", width = 15, orderNum = "0")
private String phone;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getRemark() {
return remark;
}
public void setRemark(String remark) {
this.remark = remark;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public BlackListExport() {
}
public BlackListExport(String name, String remark, String phone) {
this.name = name;
this.remark = remark;
this.phone = phone;
}
}
@ApiOperation(value = "easyPoiUtil ")
@GetMapping(value = "/poi/export1")
public void export1(HttpServletResponse response){
List<BlackListExport> list=new ArrayList<>();
for(int i=0;i<10000;i++){
list.add(new BlackListExport(i+"",i+"",i+""));
}
EasyPoiUtil.exportExcel(list,"zx","huangy",BlackListExport.class,"zx.xls",response);
}
/**
* sheet data list ，
* sheet ， list data sheet 。
* @param response
*/
@ApiOperation(value = " sheet ")
@GetMapping(value = "/poi/export2")
public void export2(HttpServletResponse response){
// ,
List list = new ArrayList<>();
list.add(new BlackListExport(" 1"," 1"," 1")) ;
list.add(new BlackListExport(" 2"," 2"," 2")) ;
list.add(new BlackListExport(" 3"," 3"," 3")) ;
List list2 = new ArrayList<>();
list2.add(new BlackListExport(" -1"," -1"," -1")) ;
list2.add(new BlackListExport(" -2"," -2"," -2")) ;
list2.add(new BlackListExport(" -3"," -3"," -3")) ;
List<Map<String,Object>> sheetsList = new ArrayList<>();
for(int i=1;i<=4;i++){
//
// （ excel sheet ）
ExportParams params = new ExportParams() ;
// sheet
params.setSheetName(" "+i);
// sheet map
Map<String,Object> dataMap = new HashMap<>();
// title ExportParams ， ExportParams sheetName
dataMap.put("title",params) ;
//
dataMap.put("entity",BlackListExport.class) ;
// sheet
if(i%2==0){
dataMap.put("data",list) ;
}else {
dataMap.put("data",list2) ;
}
sheetsList.add(dataMap);
}
EasyPoiUtil.exportExcel(sheetsList,"hy.xls",response);
}