史上最全的Excel匯入匯出之easyexcel
阿新 • • 發佈:2020-11-19
喝水不忘挖井人,感謝阿里巴巴專案組提供了easyexcel工具類,github地址:https://github.com/alibaba/easyexcel
文章目錄
環境搭建
- easyexcel 依賴(必須)
- springboot (不是必須)
- lombok (不是必須)
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>easyexcel</artifactId>
<version>1.1.2-beat1</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.2</version>
</dependency>
讀取excel檔案
小於1000行資料
預設讀取
讀取Sheet1的全部資料
String filePath = "/home/chenmingjian/Downloads/學生表.xlsx";
List<Object> objects = ExcelUtil.readLessThan1000Row(filePath);
指定讀取
下面是學生表.xlsx中Sheet1,Sheet2的資料
獲取Sheet1表頭以下的資訊
String filePath = "/home/chenmingjian/Downloads/學生表.xlsx";
//第一個1代表sheet1, 第二個1代表從第幾行開始讀取資料,行號最小值為0
Sheet sheet = new Sheet(1, 1);
List<Object> objects = ExcelUtil.readLessThan1000Row(filePath,sheet);
獲取Sheet2的所有資訊
String filePath = "/home/chenmingjian/Downloads/學生表.xlsx";
Sheet sheet = new Sheet(2, 0);
List<Object> objects = ExcelUtil.readLessThan1000Row(filePath,sheet);
大於1000行資料
預設讀取
String filePath = "/home/chenmingjian/Downloads/學生表.xlsx";
List<Object> objects = ExcelUtil.readMoreThan1000Row(filePath);
指定讀取
String filePath = "/home/chenmingjian/Downloads/學生表.xlsx";
Sheet sheet = new Sheet(1, 2);
List<Object> objects = ExcelUtil.readMoreThan1000Row(filePath,sheet);
匯出excle
單個Sheet匯出
無模型對映匯出
String filePath = "/home/chenmingjian/Downloads/測試.xlsx";
List<List<Object>> data = new ArrayList<>();
data.add(Arrays.asList("111","222","333"));
data.add(Arrays.asList("111","222","333"));
data.add(Arrays.asList("111","222","333"));
List<String> head = Arrays.asList("表頭1", "表頭2", "表頭3");
ExcelUtil.writeBySimple(filePath,data,head);
結果
模型對映匯出
1、定義好模型物件
package com.springboot.utils.excel.test;
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.metadata.BaseRowModel;
import lombok.Data;
import lombok.EqualsAndHashCode;
/**
* @description:
* @author: chenmingjian
* @date: 19-4-3 14:44
*/
@EqualsAndHashCode(callSuper = true)
@Data
public class TableHeaderExcelProperty extends BaseRowModel {
/**
* value: 表頭名稱
* index: 列的號, 0表示第一列
*/
@ExcelProperty(value = "姓名", index = 0)
private String name;
@ExcelProperty(value = "年齡",index = 1)
private int age;
@ExcelProperty(value = "學校",index = 2)
private String school;
}
2、呼叫方法
String filePath = "/home/chenmingjian/Downloads/測試.xlsx";
ArrayList<TableHeaderExcelProperty> data = new ArrayList<>();
for(int i = 0; i < 4; i++){
TableHeaderExcelProperty tableHeaderExcelProperty = new TableHeaderExcelProperty();
tableHeaderExcelProperty.setName("cmj" + i);
tableHeaderExcelProperty.setAge(22 + i);
tableHeaderExcelProperty.setSchool("清華大學" + i);
data.add(tableHeaderExcelProperty);
}
ExcelUtil.writeWithTemplate(filePath,data);
多個Sheet匯出
1、定義好模型物件
package com.springboot.utils.excel.test;
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.metadata.BaseRowModel;
import lombok.Data;
import lombok.EqualsAndHashCode;
/**
* @description:
* @author: chenmingjian
* @date: 19-4-3 14:44
*/
@EqualsAndHashCode(callSuper = true)
@Data
public class TableHeaderExcelProperty extends BaseRowModel {
/**
* value: 表頭名稱
* index: 列的號, 0表示第一列
*/
@ExcelProperty(value = "姓名", index = 0)
private String name;
@ExcelProperty(value = "年齡",index = 1)
private int age;
@ExcelProperty(value = "學校",index = 2)
private String school;
}
2、呼叫方法
ArrayList<ExcelUtil.MultipleSheelPropety> list1 = new ArrayList<>();
for(int j = 1; j < 4; j++){
ArrayList<TableHeaderExcelProperty> list = new ArrayList<>();
for(int i = 0; i < 4; i++){
TableHeaderExcelProperty tableHeaderExcelProperty = new TableHeaderExcelProperty();
tableHeaderExcelProperty.setName("cmj" + i);
tableHeaderExcelProperty.setAge(22 + i);
tableHeaderExcelProperty.setSchool("清華大學" + i);
list.add(tableHeaderExcelProperty);
}
Sheet sheet = new Sheet(j, 0);
sheet.setSheetName("sheet" + j);
ExcelUtil.MultipleSheelPropety multipleSheelPropety = new ExcelUtil.MultipleSheelPropety();
multipleSheelPropety.setData(list);
multipleSheelPropety.setSheet(sheet);
list1.add(multipleSheelPropety);
}
ExcelUtil.writeWithMultipleSheel("/home/chenmingjian/Downloads/aaa.xlsx",list1);
工具類
package com.springboot.utils.excel;
import com.alibaba.excel.EasyExcelFactory;
import com.alibaba.excel.ExcelWriter;
import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.alibaba.excel.metadata.BaseRowModel;
import com.alibaba.excel.metadata.Sheet;
import lombok.Data;
import lombok.Getter;
import lombok.Setter;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;
import java.io.*;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* @description:
* @author: chenmingjian
* @date: 19-3-18 16:16
*/
@Slf4j
public class ExcelUtil {
private static Sheet initSheet;
static {
initSheet = new Sheet(1, 0);
initSheet.setSheetName("sheet");
//設定自適應寬度
initSheet.setAutoWidth(Boolean.TRUE);
}
/**
* 讀取少於1000行資料
* @param filePath 檔案絕對路徑
* @return
*/
public static List<Object> readLessThan1000Row(String filePath){
return readLessThan1000RowBySheet(filePath,null);
}
/**
* 讀小於1000行資料, 帶樣式
* filePath 檔案絕對路徑
* initSheet :
* sheetNo: sheet頁碼,預設為1
* headLineMun: 從第幾行開始讀取資料,預設為0, 表示從第一行開始讀取
* clazz: 返回資料List<Object> 中Object的類名
*/
public static List<Object> readLessThan1000RowBySheet(String filePath, Sheet sheet){
if(!StringUtils.hasText(filePath)){
return null;
}
sheet = sheet != null ? sheet : initSheet;
InputStream fileStream = null;
try {
fileStream = new FileInputStream(filePath);
return EasyExcelFactory.read(fileStream, sheet);
} catch (FileNotFoundException e) {
log.info("找不到檔案或檔案路徑錯誤, 檔案:{}", filePath);
}finally {
try {
if(fileStream != null){
fileStream.close();
}
} catch (IOException e) {
log.info("excel檔案讀取失敗, 失敗原因:{}", e);
}
}
return null;
}
/**
* 讀大於1000行資料
* @param filePath 檔案覺得路徑
* @return
*/
public static List<Object> readMoreThan1000Row(String filePath){
return readMoreThan1000RowBySheet(filePath,null);
}
/**
* 讀大於1000行資料, 帶樣式
* @param filePath 檔案覺得路徑
* @return
*/
public static List<Object>