史上最全的Excel導入導出之easyexcel

本文轉載自查看原文 2020-05-25 10:58 5589

原文：https://blog.csdn.net/qq_32258777/article/details/89031479

文章目錄

環境搭建

讀取excel文件

小於1000行數據

默認讀取

指定讀取

大於1000行數據

默認讀取

指定讀取

導出excle

單個Sheet導出

無模型映射導出

模型映射導出

多個Sheet導出

工具類

測試類

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文件

小於1000行數據

默認讀取

讀取Sheet1的全部數據

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的數據
在這里插入圖片描述

獲取Sheet1表頭以下的信息

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數據，行號最小值為0
Sheet sheet = new Sheet(1, 1);
List<Object> objects = ExcelUtil.readLessThan1000Row(filePath,sheet);

獲取Sheet2的所有信息

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行數據

默認讀取

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);

導出excle

單個Sheet導出

無模型映射導出

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
在這里插入圖片描述

模型映射導出

1、定義好模型對象

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、調用方法

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導出

1、定義好模型對象

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、調用方法

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");
      //設置自適應寬度
      initSheet.setAutoWidth(Boolean.TRUE);
   }

   /**
    * 讀取少於1000行數據
    * @param filePath 文件絕對路徑
    * @return
    */
   public static List<Object> readLessThan1000Row(String filePath){
      return readLessThan1000RowBySheet(filePath,null);
   }

   /**
    * 讀小於1000行數據, 帶樣式
    * filePath 文件絕對路徑
    * initSheet ：
    *      sheetNo: sheet頁碼，默認為1
    *      headLineMun: 從第幾行開始讀取數據，默認為0, 表示從第一行開始讀取
    *      clazz: 返回數據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("找不到文件或文件路徑錯誤, 文件：{}", filePath);
      }finally {
         try {
            if(fileStream != null){
               fileStream.close();
            }
         } catch (IOException e) {
            log.info("excel文件讀取失敗, 失敗原因：{}", e);
         }
      }
      return null;
   }

   /**
    * 讀大於1000行數據
    * @param filePath 文件覺得路徑
    * @return
    */
   public static List<Object> readMoreThan1000Row(String filePath){
      return readMoreThan1000RowBySheet(filePath,null);
   }

   /**
    * 讀大於1000行數據, 帶樣式
    * @param filePath 文件覺得路徑
    * @return
    */
   public static List<Object> readMoreThan1000RowBySheet(String filePath, Sheet sheet){
      if(!StringUtils.hasText(filePath)){
         return null;
      }

      sheet = sheet != null ? sheet : initSheet;

      InputStream fileStream = null;
      try {
         fileStream = new FileInputStream(filePath);
         ExcelListener excelListener = new ExcelListener();
         EasyExcelFactory.readBySax(fileStream, sheet, excelListener);
         return excelListener.getDatas();
      } catch (FileNotFoundException e) {
         log.error("找不到文件或文件路徑錯誤, 文件：{}", filePath);
      }finally {
         try {
            if(fileStream != null){
               fileStream.close();
            }
         } catch (IOException e) {
            log.error("excel文件讀取失敗, 失敗原因：{}", e);
         }
      }
      return null;
   }

   /**
    * 生成excle
    * @param filePath  絕對路徑, 如：/home/chenmingjian/Downloads/aaa.xlsx
    * @param data 數據源
    * @param head 表頭
    */
   public static void writeBySimple(String filePath, List<List<Object>> data, List<String> head){
      writeSimpleBySheet(filePath,data,head,null);
   }

   /**
    * 生成excle
    * @param filePath 絕對路徑, 如：/home/chenmingjian/Downloads/aaa.xlsx
    * @param data 數據源
    * @param sheet excle頁面樣式
    * @param head 表頭
    */
   public static void writeSimpleBySheet(String filePath, List<List<Object>> data, List<String> head, Sheet sheet){
      sheet = (sheet != null) ? sheet : initSheet;

      if(head != null){
         List<List<String>> list = new ArrayList<>();
         head.forEach(h -> list.add(Collections.singletonList(h)));
         sheet.setHead(list);
      }

      OutputStream outputStream = null;
      ExcelWriter writer = null;
      try {
         outputStream = new FileOutputStream(filePath);
         writer = EasyExcelFactory.getWriter(outputStream);
         writer.write1(data,sheet);
      } catch (FileNotFoundException e) {
         log.error("找不到文件或文件路徑錯誤, 文件：{}", filePath);
      }finally {
         try {
            if(writer != null){
               writer.finish();
            }

            if(outputStream != null){
               outputStream.close();
            }

         } catch (IOException e) {
            log.error("excel文件導出失敗, 失敗原因：{}", e);
         }
      }

   }

   /**
    * 生成excle
    * @param filePath 絕對路徑, 如：/home/chenmingjian/Downloads/aaa.xlsx
    * @param data 數據源
    */
   public static void writeWithTemplate(String filePath, List<? extends BaseRowModel> data){
      writeWithTemplateAndSheet(filePath,data,null);
   }

   /**
    * 生成excle
    * @param filePath 絕對路徑, 如：/home/chenmingjian/Downloads/aaa.xlsx
    * @param data 數據源
    * @param sheet excle頁面樣式
    */
   public static void writeWithTemplateAndSheet(String filePath, List<? extends BaseRowModel> data, Sheet sheet){
      if(CollectionUtils.isEmpty(data)){
         return;
      }

      sheet = (sheet != null) ? sheet : initSheet;
      sheet.setClazz(data.get(0).getClass());

      OutputStream outputStream = null;
      ExcelWriter writer = null;
      try {
         outputStream = new FileOutputStream(filePath);
         writer = EasyExcelFactory.getWriter(outputStream);
         writer.write(data,sheet);
      } catch (FileNotFoundException e) {
         log.error("找不到文件或文件路徑錯誤, 文件：{}", filePath);
      }finally {
         try {
            if(writer != null){
               writer.finish();
            }

            if(outputStream != null){
               outputStream.close();
            }
         } catch (IOException e) {
            log.error("excel文件導出失敗, 失敗原因：{}", e);
         }
      }

   }

   /**
    * 生成多Sheet的excle
    * @param filePath 絕對路徑, 如：/home/chenmingjian/Downloads/aaa.xlsx
    * @param multipleSheelPropetys
    */
   public static void writeWithMultipleSheel(String filePath,List<MultipleSheelPropety> multipleSheelPropetys){
      if(CollectionUtils.isEmpty(multipleSheelPropetys)){
         return;
      }

      OutputStream outputStream = null;
      ExcelWriter writer = null;
      try {
         outputStream = new FileOutputStream(filePath);
         writer = EasyExcelFactory.getWriter(outputStream);
         for (MultipleSheelPropety multipleSheelPropety : multipleSheelPropetys) {
            Sheet sheet = multipleSheelPropety.getSheet() != null ? multipleSheelPropety.getSheet() : initSheet;
            if(!CollectionUtils.isEmpty(multipleSheelPropety.getData())){
               sheet.setClazz(multipleSheelPropety.getData().get(0).getClass());
            }
            writer.write(multipleSheelPropety.getData(), sheet);
         }

      } catch (FileNotFoundException e) {
         log.error("找不到文件或文件路徑錯誤, 文件：{}", filePath);
      }finally {
         try {
            if(writer != null){
               writer.finish();
            }

            if(outputStream != null){
               outputStream.close();
            }
         } catch (IOException e) {
            log.error("excel文件導出失敗, 失敗原因：{}", e);
         }
      }

   }


   /*********************匿名內部類開始，可以提取出去******************************/

   @Data
   public static class MultipleSheelPropety{

      private List<? extends BaseRowModel> data;

      private Sheet sheet;
   }

   /**
    * 解析監聽器，
    * 每解析一行會回調invoke()方法。
    * 整個excel解析結束會執行doAfterAllAnalysed()方法
    *
    * @author: chenmingjian
    * @date: 19-4-3 14:11
    */
   @Getter
   @Setter
   public static class ExcelListener extends AnalysisEventListener {

      private List<Object> datas = new ArrayList<>();

      /**
       * 逐行解析
       * object : 當前行的數據
       */
      @Override
      public void invoke(Object object, AnalysisContext context) {
         //當前行
         // context.getCurrentRowNum()
         if (object != null) {
            datas.add(object);
         }
      }


      /**
       * 解析完所有數據后會調用該方法
       */
      @Override
      public void doAfterAllAnalysed(AnalysisContext context) {
         //解析結束銷毀不用的資源
      }

   }

   /************************匿名內部類結束，可以提取出去***************************/

}

測試類

package com.springboot.utils.excel;

import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.metadata.BaseRowModel;
import com.alibaba.excel.metadata.Sheet;
import lombok.Data;
import lombok.EqualsAndHashCode;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * @description: 測試類
 * @author: chenmingjian
 * @date: 19-4-4 15:24
 */
@SpringBootTest
@RunWith(SpringRunner.class)
public class Test {

    /**
     * 讀取少於1000行的excle
     */
    @org.junit.Test
    public void readLessThan1000Row(){
        String filePath = "/home/chenmingjian/Downloads/測試.xlsx";
        List<Object> objects = ExcelUtil.readLessThan1000Row(filePath);
        objects.forEach(System.out::println);
    }

    /**
     * 讀取少於1000行的excle，可以指定sheet和從幾行讀起
     */
    @org.junit.Test
    public void readLessThan1000RowBySheet(){
        String filePath = "/home/chenmingjian/Downloads/測試.xlsx";
        Sheet sheet = new Sheet(1, 1);
        List<Object> objects = ExcelUtil.readLessThan1000RowBySheet(filePath,sheet);
        objects.forEach(System.out::println);
    }

    /**
     * 讀取大於1000行的excle
     * 帶sheet參數的方法可參照測試方法readLessThan1000RowBySheet()
     */
    @org.junit.Test
    public void readMoreThan1000Row(){
        String filePath = "/home/chenmingjian/Downloads/測試.xlsx";
        List<Object> objects = ExcelUtil.readMoreThan1000Row(filePath);
        objects.forEach(System.out::println);
    }


    /**
     * 生成excle
     * 帶sheet參數的方法可參照測試方法readLessThan1000RowBySheet()
     */
    @org.junit.Test
    public void writeBySimple(){
        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);
    }


    /**
     * 生成excle, 帶用模型
     * 帶sheet參數的方法可參照測試方法readLessThan1000RowBySheet()
     */
    @org.junit.Test
    public void writeWithTemplate(){
        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);
    }


    /**
     * 生成excle, 帶用模型,帶多個sheet
     */
    @org.junit.Test
    public void writeWithMultipleSheel(){
        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);

    }


    /*******************匿名內部類，實際開發中該對象要提取出去**********************/
    
    
    /**
     * @description:
     * @author: chenmingjian
     * @date: 19-4-3 14:44
     */
    @EqualsAndHashCode(callSuper = true)
    @Data
    public static 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;
    }

    /*******************匿名內部類，實際開發中該對象要提取出去**********************/

}

喝水不忘挖井人，感謝阿里巴巴項目組提供了easyexcel工具類，github地址：https://github.com/alibaba/easyexcel
文章目錄環境搭建讀取excel文件小於1000行數據默認讀取指定讀取大於1000行數據默認讀取指定讀取導出excle單個Sheet導出無模型映射導出模型映射導出多個Sheet導出工具類測試類環境搭建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>1234567891011讀取excel文件小於1000行數據默認讀取讀取Sheet1的全部數據
String filePath = "/home/chenmingjian/Downloads/學生表.xlsx"; List<Object> objects = ExcelUtil.readLessThan1000Row(filePath);12指定讀取下面是學生表.xlsx中Sheet1，Sheet2的數據

獲取Sheet1表頭以下的信息
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數據，行號最小值為0Sheet sheet = new Sheet(1, 1);List<Object> objects = ExcelUtil.readLessThan1000Row(filePath,sheet);1234獲取Sheet2的所有信息
String filePath = "/home/chenmingjian/Downloads/學生表.xlsx"; Sheet sheet = new Sheet(2, 0); List<Object> objects = ExcelUtil.readLessThan1000Row(filePath,sheet);123大於1000行數據默認讀取String filePath = "/home/chenmingjian/Downloads/學生表.xlsx";List<Object> objects = ExcelUtil.readMoreThan1000Row(filePath);12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);123導出excle單個Sheet導出無模型映射導出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);1234567結果

模型映射導出1、定義好模型對象
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)@Datapublic 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;}
1234567891011121314151617181920212223242526272829302、調用方法
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);1234567891011多個Sheet導出1、定義好模型對象
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)@Datapublic 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;}
1234567891011121314151617181920212223242526272829302、調用方法
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);1234567891011121314151617181920212223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 */@Slf4jpublic class ExcelUtil {
private static Sheet initSheet;
static { initSheet = new Sheet(1, 0); initSheet.setSheetName("sheet"); //設置自適應寬度 initSheet.setAutoWidth(Boolean.TRUE); }
/** * 讀取少於1000行數據 * @param filePath 文件絕對路徑 * @return */ public static List<Object> readLessThan1000Row(String filePath){ return readLessThan1000RowBySheet(filePath,null); }
/** * 讀小於1000行數據, 帶樣式 * filePath 文件絕對路徑 * initSheet ： * sheetNo: sheet頁碼，默認為1 * headLineMun: 從第幾行開始讀取數據，默認為0, 表示從第一行開始讀取 * clazz: 返回數據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("找不到文件或文件路徑錯誤, 文件：{}", filePath); }finally { try { if(fileStream != null){ fileStream.close(); } } catch (IOException e) { log.info("excel文件讀取失敗, 失敗原因：{}", e); } } return null; }
/** * 讀大於1000行數據 * @param filePath 文件覺得路徑 * @return */ public static List<Object> readMoreThan1000Row(String filePath){ return readMoreThan1000RowBySheet(filePath,null); }
/** * 讀大於1000行數據, 帶樣式 * @param filePath 文件覺得路徑 * @return */ public static List<Object> readMoreThan1000RowBySheet(String filePath, Sheet sheet){ if(!StringUtils.hasText(filePath)){ return null; }
sheet = sheet != null ? sheet : initSheet;
InputStream fileStream = null; try { fileStream = new FileInputStream(filePath); ExcelListener excelListener = new ExcelListener(); EasyExcelFactory.readBySax(fileStream, sheet, excelListener); return excelListener.getDatas(); } catch (FileNotFoundException e) { log.error("找不到文件或文件路徑錯誤, 文件：{}", filePath); }finally { try { if(fileStream != null){ fileStream.close(); } } catch (IOException e) { log.error("excel文件讀取失敗, 失敗原因：{}", e); } } return null; }
/** * 生成excle * @param filePath 絕對路徑, 如：/home/chenmingjian/Downloads/aaa.xlsx * @param data 數據源 * @param head 表頭 */ public static void writeBySimple(String filePath, List<List<Object>> data, List<String> head){ writeSimpleBySheet(filePath,data,head,null); }
/** * 生成excle * @param filePath 絕對路徑, 如：/home/chenmingjian/Downloads/aaa.xlsx * @param data 數據源 * @param sheet excle頁面樣式 * @param head 表頭 */ public static void writeSimpleBySheet(String filePath, List<List<Object>> data, List<String> head, Sheet sheet){ sheet = (sheet != null) ? sheet : initSheet;
if(head != null){ List<List<String>> list = new ArrayList<>(); head.forEach(h -> list.add(Collections.singletonList(h))); sheet.setHead(list); }
OutputStream outputStream = null; ExcelWriter writer = null; try { outputStream = new FileOutputStream(filePath); writer = EasyExcelFactory.getWriter(outputStream); writer.write1(data,sheet); } catch (FileNotFoundException e) { log.error("找不到文件或文件路徑錯誤, 文件：{}", filePath); }finally { try { if(writer != null){ writer.finish(); }
if(outputStream != null){ outputStream.close(); }
} catch (IOException e) { log.error("excel文件導出失敗, 失敗原因：{}", e); } }
}
/** * 生成excle * @param filePath 絕對路徑, 如：/home/chenmingjian/Downloads/aaa.xlsx * @param data 數據源 */ public static void writeWithTemplate(String filePath, List<? extends BaseRowModel> data){ writeWithTemplateAndSheet(filePath,data,null); }
/** * 生成excle * @param filePath 絕對路徑, 如：/home/chenmingjian/Downloads/aaa.xlsx * @param data 數據源 * @param sheet excle頁面樣式 */ public static void writeWithTemplateAndSheet(String filePath, List<? extends BaseRowModel> data, Sheet sheet){ if(CollectionUtils.isEmpty(data)){ return; }
sheet = (sheet != null) ? sheet : initSheet; sheet.setClazz(data.get(0).getClass());
OutputStream outputStream = null; ExcelWriter writer = null; try { outputStream = new FileOutputStream(filePath); writer = EasyExcelFactory.getWriter(outputStream); writer.write(data,sheet); } catch (FileNotFoundException e) { log.error("找不到文件或文件路徑錯誤, 文件：{}", filePath); }finally { try { if(writer != null){ writer.finish(); }
if(outputStream != null){ outputStream.close(); } } catch (IOException e) { log.error("excel文件導出失敗, 失敗原因：{}", e); } }
}
/** * 生成多Sheet的excle * @param filePath 絕對路徑, 如：/home/chenmingjian/Downloads/aaa.xlsx * @param multipleSheelPropetys */ public static void writeWithMultipleSheel(String filePath,List<MultipleSheelPropety> multipleSheelPropetys){ if(CollectionUtils.isEmpty(multipleSheelPropetys)){ return; }
OutputStream outputStream = null; ExcelWriter writer = null; try { outputStream = new FileOutputStream(filePath); writer = EasyExcelFactory.getWriter(outputStream); for (MultipleSheelPropety multipleSheelPropety : multipleSheelPropetys) { Sheet sheet = multipleSheelPropety.getSheet() != null ? multipleSheelPropety.getSheet() : initSheet; if(!CollectionUtils.isEmpty(multipleSheelPropety.getData())){ sheet.setClazz(multipleSheelPropety.getData().get(0).getClass()); } writer.write(multipleSheelPropety.getData(), sheet); }
} catch (FileNotFoundException e) { log.error("找不到文件或文件路徑錯誤, 文件：{}", filePath); }finally { try { if(writer != null){ writer.finish(); }
if(outputStream != null){ outputStream.close(); } } catch (IOException e) { log.error("excel文件導出失敗, 失敗原因：{}", e); } }
}

/*********************匿名內部類開始，可以提取出去******************************/
@Data public static class MultipleSheelPropety{
private List<? extends BaseRowModel> data;
private Sheet sheet; }
/** * 解析監聽器， * 每解析一行會回調invoke()方法。 * 整個excel解析結束會執行doAfterAllAnalysed()方法 * * @author: chenmingjian * @date: 19-4-3 14:11 */ @Getter @Setter public static class ExcelListener extends AnalysisEventListener {
private List<Object> datas = new ArrayList<>();
/** * 逐行解析 * object : 當前行的數據 */ @Override public void invoke(Object object, AnalysisContext context) { //當前行 // context.getCurrentRowNum() if (object != null) { datas.add(object); } }

/** * 解析完所有數據后會調用該方法 */ @Override public void doAfterAllAnalysed(AnalysisContext context) { //解析結束銷毀不用的資源 }
}
/************************匿名內部類結束，可以提取出去***************************/
}
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312測試類package com.springboot.utils.excel;
import com.alibaba.excel.annotation.ExcelProperty;import com.alibaba.excel.metadata.BaseRowModel;import com.alibaba.excel.metadata.Sheet;import lombok.Data;import lombok.EqualsAndHashCode;import org.junit.runner.RunWith;import org.springframework.boot.test.context.SpringBootTest;import org.springframework.test.context.junit4.SpringRunner;
import java.util.ArrayList;import java.util.Arrays;import java.util.List;
/** * @description: 測試類 * @author: chenmingjian * @date: 19-4-4 15:24 */@SpringBootTest@RunWith(SpringRunner.class)public class Test {
/** * 讀取少於1000行的excle */ @org.junit.Test public void readLessThan1000Row(){ String filePath = "/home/chenmingjian/Downloads/測試.xlsx"; List<Object> objects = ExcelUtil.readLessThan1000Row(filePath); objects.forEach(System.out::println); }
/** * 讀取少於1000行的excle，可以指定sheet和從幾行讀起 */ @org.junit.Test public void readLessThan1000RowBySheet(){ String filePath = "/home/chenmingjian/Downloads/測試.xlsx"; Sheet sheet = new Sheet(1, 1); List<Object> objects = ExcelUtil.readLessThan1000RowBySheet(filePath,sheet); objects.forEach(System.out::println); }
/** * 讀取大於1000行的excle * 帶sheet參數的方法可參照測試方法readLessThan1000RowBySheet() */ @org.junit.Test public void readMoreThan1000Row(){ String filePath = "/home/chenmingjian/Downloads/測試.xlsx"; List<Object> objects = ExcelUtil.readMoreThan1000Row(filePath); objects.forEach(System.out::println); }

/** * 生成excle * 帶sheet參數的方法可參照測試方法readLessThan1000RowBySheet() */ @org.junit.Test public void writeBySimple(){ 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); }

/** * 生成excle, 帶用模型 * 帶sheet參數的方法可參照測試方法readLessThan1000RowBySheet() */ @org.junit.Test public void writeWithTemplate(){ 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); }

/** * 生成excle, 帶用模型,帶多個sheet */ @org.junit.Test public void writeWithMultipleSheel(){ 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);
}

/*******************匿名內部類，實際開發中該對象要提取出去**********************/         /** * @description: * @author: chenmingjian * @date: 19-4-3 14:44 */ @EqualsAndHashCode(callSuper = true) @Data public static 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; }
/*******************匿名內部類，實際開發中該對象要提取出去**********************/
}

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全村少女的夢·:Exception in thread "main" java.lang.NoSuchMethodError: org.apache.poi.ss.usermodel.Font.setBold(Z)V at com.alibaba.excel.util.StyleUtil.buildDefaultCellStyle(StyleUtil.java:22) at com.alibaba.excel.context.WriteContext.<init>(WriteContext.java:104) at com.alibaba.excel.write.ExcelBuilderImpl.<init>(ExcelBuilderImpl.java:40) at com.alibaba.excel.ExcelWriter.<init>(ExcelWriter.java:58) at com.alibaba.excel.EasyExcelFactory.getWriter(EasyExcelFactory.java:72) at com.ghh.util.ExcelUtil.writeWithTemplateAndSheet(ExcelUtil.java:53) at com.ghh.util.ExcelUtil.writeWithTemplate(ExcelUtil.java:32) at com.ghh.excel.CreateExcel.main(CreateExcel.java:28)這個錯誤有遇到過嗎？博主8個月前查看回復(1)1
碼農yssa1125001:easyExcel 不是對 poi 的封裝嗎，不是也需要poi的依賴嗎？1周前查看回復(2)

cocoboloer:工具類中writeWithMultipleSheel導入多個sheet會報錯，Attempting to write a row[0] in the range [0,631] that is already written to disk，我自己更換了，Sheet過時問題。outputStream = new FileOutputStream(filePath);// writer = EasyExcelFactory.getWriter(outputStream); writer = EasyExcel.write(outputStream).build(); for (MultipleSheelPropety multipleSheelPropety : multipleSheelPropetys) { WriteSheet sheet = multipleSheelPropety.getSheet();   if(!CollectionUtils.isEmpty(multipleSheelPropety.getData())){ sheet.setClazz(multipleSheelPropety.getData().get(0).getClass()); } writer.write(multipleSheelPropety.getData(), sheet); }————————————————版權聲明：本文為CSDN博主「沖奶粉的奶爸」的原創文章，遵循CC 4.0 BY-SA版權協議，轉載請附上原文出處鏈接及本聲明。原文鏈接：https://blog.csdn.net/qq_32258777/java/article/details/89031479

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