史上最全的Excel导入导出之easyexcel

时间:2024-02-22 08:34:55

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

 

文章目录

环境搭建

读取excel文件

小于1000行数据

默认读取

指定读取

大于1000行数据

默认读取

指定读取

导出excle

单个Sheet导出

无模型映射导出

模型映射导出

多个Sheet导出

工具类

测试类

环境搭建

easyexcel 依赖(必须)

springboot (不是必须)

lombok (不是必须)

<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>

读取excel文件

小于1000行数据

默认读取

读取Sheet1的全部数据

String filePath = "/home/chenmingjian/Downloads/学生表.xlsx";
 List<Object> objects = ExcelUtil.readLessThan1000Row(filePath);

指定读取

下面是学生表.xlsx中Sheet1,Sheet2的数据
在这里插入图片描述
在这里插入图片描述
获取Sheet1表头以下的信息

String filePath = "/home/chenmingjian/Downloads/学生表.xlsx";
//第一个1代表sheet1, 第二个1代表从第几行开始读取数据,行号最小值为0
Sheet sheet = new Sheet(1, 1);
List<Object> objects = ExcelUtil.readLessThan1000Row(filePath,sheet);

获取Sheet2的所有信息

String filePath = "/home/chenmingjian/Downloads/学生表.xlsx";
 Sheet sheet = new Sheet(2, 0);
 List<Object> objects = ExcelUtil.readLessThan1000Row(filePath,sheet);

大于1000行数据

默认读取

String filePath = "/home/chenmingjian/Downloads/学生表.xlsx";
List<Object> objects = ExcelUtil.readMoreThan1000Row(filePath);

指定读取

String filePath = "/home/chenmingjian/Downloads/学生表.xlsx";
Sheet sheet = new Sheet(1, 2);
List<Object> objects = ExcelUtil.readMoreThan1000Row(filePath,sheet);

导出excle

单个Sheet导出

无模型映射导出

String filePath = "/home/chenmingjian/Downloads/测试.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("表头1", "表头2", "表头3");
ExcelUtil.writeBySimple(filePath,data,head);

结果
在这里插入图片描述

模型映射导出

1、定义好模型对象

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: 表头名称
     * index: 列的号, 0表示第一列
     */
    @ExcelProperty(value = "姓名", index = 0)
    private String name;

    @ExcelProperty(value = "年龄",index = 1)
    private int age;

    @ExcelProperty(value = "学校",index = 2)
    private String school;
}

2、调用方法

String filePath = "/home/chenmingjian/Downloads/测试.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("清华大学" + i);
      data.add(tableHeaderExcelProperty);
  }

  ExcelUtil.writeWithTemplate(filePath,data);

多个Sheet导出

1、定义好模型对象

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: 表头名称
     * index: 列的号, 0表示第一列
     */
    @ExcelProperty(value = "姓名", index = 0)
    private String name;

    @ExcelProperty(value = "年龄",index = 1)
    private int age;

    @ExcelProperty(value = "学校",index = 2)
    private String school;
}

2、调用方法

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("清华大学" + 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);

工具类

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");
      //设置自适应宽度
      initSheet.setAutoWidth(Boolean.TRUE);
   }

   /**
    * 读取少于1000行数据
    * @param filePath 文件绝对路径
    * @return
    */
   public static List<Object> readLessThan1000Row(String filePath){
      return readLessThan1000RowBySheet(filePath,null);
   }

   /**
    * 读小于1000行数据, 带样式
    * filePath 文件绝对路径
    * initSheet :
    *      sheetNo: sheet页码,默认为1
    *      headLineMun: 从第几行开始读取数据,默认为0, 表示从第一行开始读取
    *      clazz: 返回数据List<Object> 中Object的类名
    */
   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径错误, 文件:{}", filePath);
      }finally {
         try {
            if(fileStream != null){
               fileStream.close();
            }
         } catch (IOException e) {
            log.info("excel文件读取失败, 失败原因:{}", e);
         }
      }
      return null;
   }

   /**
    * 读大于1000行数据
    * @param filePath 文件觉得路径
    * @return
    */
   public static List<Object> readMoreThan1000Row(String filePath){
      return readMoreThan1000RowBySheet(filePath,null);
   }

   /**
    * 读大于1000行数据, 带样式
    * @param filePath 文件觉得路径
    * @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径错误, 文件:{}", filePath);
      }finally {
         try {
            if(fileStream != null){
               fileStream.close();
            }
         } catch (IOException e) {
            log.error("excel文件读取失败, 失败原因:{}", e);
         }
      }
      return null;
   }

   /**
    * 生成excle
    * @param filePath  绝对路径, 如:/home/chenmingjian/Downloads/aaa.xlsx
    * @param data 数据源
    * @param head 表头
    */
   public static void writeBySimple(String filePath, List<List<Object>> data, List<String> head){
      writeSimpleBySheet(filePath,data,head,null);
   }

   /**
    * 生成excle
    * @param filePath 绝对路径, 如:/home/chenmingjian/Downloads/aaa.xlsx
    * @param data 数据源
    * @param sheet excle页面样式
    * @param head 表头
    */
   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径错误, 文件:{}", filePath);
      }finally {
         try {
            if(writer != null){
               writer.finish();
            }

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

         } catch (IOException e) {
            log.error("excel文件导出失败, 失败原因:{}", e);
         }
      }

   }

   /**
    * 生成excle
    * @param filePath 绝对路径, 如:/home/chenmingjian/Downloads/aaa.xlsx
    * @param data 数据源
    */
   public static void writeWithTemplate(String filePath, List<? extends BaseRowModel> data){
      writeWithTemplateAndSheet(filePath,data,null);
   }

   /**
    * 生成excle
    * @param filePath 绝对路径, 如:/home/chenmingjian/Downloads/aaa.xlsx
    * @param data 数据源
    * @param sheet excle页面样式
    */
   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径错误, 文件:{}", filePath);
      }finally {
         try {
            if(writer != null){
               writer.finish();
            }

            if(outputStream != null){
               outputStream.close();
            }
         } catch (IOException e) {
            log.error("excel文件导出失败, 失败原因:{}", e);
         }
      }

   }

   /**
    * 生成多Sheet的excle
    * @param filePath 绝对路径, 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径错误, 文件:{}", filePath);
      }finally {
         try {
            if(writer != null){
               writer.finish();
            }

            if(outputStream != null){
               outputStream.close();
            }
         } catch (IOException e) {
            log.error("excel文件导出失败, 失败原因:{}", e);
         }
      }

   }


   /*********************匿名内部类开始,可以提取出去******************************/

   @Data
   public static class MultipleSheelPropety{

      private List<? extends BaseRowModel> data;

      private Sheet sheet;
   }

   /**
    * 解析监听器,
    * 每解析一行会回调invoke()方法。
    * 整个excel解析结束会执行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 : 当前行的数据
       */
      @Override
      public void invoke(Object object, AnalysisContext context) {
         //当前行
         // context.getCurrentRowNum()
         if (object != null) {
            datas.add(object);
         }
      }


      /**
       * 解析完所有数据后会调用该方法
       */
      @Override
      public void doAfterAllAnalysed(AnalysisContext context) {
         //解析结束销毁不用的资源
      }

   }

   /************************匿名内部类结束,可以提取出去***************************/

}

测试类

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

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

    /**
     * 读取少于1000行的excle,可以指定sheet和从几行读起
     */
    @org.junit.Test
    public void readLessThan1000RowBySheet(){
        String filePath = "/home/chenmingjian/Downloads/测试.xlsx";
        Sheet sheet = new Sheet(1, 1);
        List<Object> objects = ExcelUtil.readLessThan1000RowBySheet(filePath,sheet);
        objects.forEach(System.out::println);
    }

    /**
     * 读取大于1000行的excle
     * 带sheet参数的方法可参照测试方法readLessThan1000RowBySheet()
     */
    @org.junit.Test
    public void readMoreThan1000Row(){
        String filePath = "/home/chenmingjian/Downloads/测试.xlsx";
        List<Object> objects = ExcelUtil.readMoreThan1000Row(filePath);
        objects.forEach(System.out::println);
    }


    /**
     * 生成excle
     * 带sheet参数的方法可参照测试方法readLessThan1000RowBySheet()
     */
    @org.junit.Test
    public void writeBySimple(){
        String filePath = "/home/chenmingjian/Downloads/测试.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("表头1", "表头2", "表头3");
        ExcelUtil.writeBySimple(filePath,data,head);
    }


    /**
     * 生成excle, 带用模型
     * 带sheet参数的方法可参照测试方法readLessThan1000RowBySheet()
     */
    @org.junit.Test
    public void writeWithTemplate(){
        String filePath = "/home/chenmingjian/Downloads/测试.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("清华大学" + i);
            data.add(tableHeaderExcelProperty);
        }
        ExcelUtil.writeWithTemplate(filePath,data);
    }


    /**
     * 生成excle, 带用模型,带多个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("清华大学" + 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);

    }


    /*******************匿名内部类,实际开发中该对象要提取出去**********************/
    
    
    /**
     * @description:
     * @author: chenmingjian
     * @date: 19-4-3 14:44
     */
    @EqualsAndHashCode(callSuper = true)
    @Data
    public static class TableHeaderExcelProperty extends BaseRowModel {

        /**
         * value: 表头名称
         * index: 列的号, 0表示第一列
         */
        @ExcelProperty(value = "姓名", index = 0)
        private String name;

        @ExcelProperty(value = "年龄",index = 1)
        private int age;

        @ExcelProperty(value = "学校",index = 2)
        private String school;
    }

    /*******************匿名内部类,实际开发中该对象要提取出去**********************/

}

 

 

喝水不忘挖井人,感谢阿里巴巴项目组提供了easyexcel工具类,github地址:https://github.com/alibaba/easyexcel
文章目录环境搭建读取excel文件小于1000行数据默认读取指定读取大于1000行数据默认读取指定读取导出excle单个Sheet导出无模型映射导出模型映射导出多个Sheet导出工具类测试类环境搭建easyexcel 依赖(必须)springboot (不是必须)lombok (不是必须) <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读取excel文件小于1000行数据默认读取读取Sheet1的全部数据
 String filePath = "/home/chenmingjian/Downloads/学生表.xlsx"; List<Object> objects = ExcelUtil.readLessThan1000Row(filePath);12指定读取下面是学生表.xlsx中Sheet1,Sheet2的数据

获取Sheet1表头以下的信息
String filePath = "/home/chenmingjian/Downloads/学生表.xlsx";//第一个1代表sheet1, 第二个1代表从第几行开始读取数据,行号最小值为0Sheet sheet = new Sheet(1, 1);List<Object> objects = ExcelUtil.readLessThan1000Row(filePath,sheet);1234获取Sheet2的所有信息
 String filePath = "/home/chenmingjian/Downloads/学生表.xlsx"; Sheet sheet = new Sheet(2, 0); List<Object> objects = ExcelUtil.readLessThan1000Row(filePath,sheet);123大于1000行数据默认读取String filePath = "/home/chenmingjian/Downloads/学生表.xlsx";List<Object> objects = ExcelUtil.readMoreThan1000Row(filePath);12指定读取String filePath = "/home/chenmingjian/Downloads/学生表.xlsx";Sheet sheet = new Sheet(1, 2);List<Object> objects = ExcelUtil.readMoreThan1000Row(filePath,sheet);123导出excle单个Sheet导出无模型映射导出String filePath = "/home/chenmingjian/Downloads/测试.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("表头1", "表头2", "表头3");ExcelUtil.writeBySimple(filePath,data,head);1234567结果

模型映射导出1、定义好模型对象
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: 表头名称     * index: 列的号, 0表示第一列     */    @ExcelProperty(value = "姓名", index = 0)    private String name;
    @ExcelProperty(value = "年龄",index = 1)    private int age;
    @ExcelProperty(value = "学校",index = 2)    private String school;}
1234567891011121314151617181920212223242526272829302、调用方法
String filePath = "/home/chenmingjian/Downloads/测试.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("清华大学" + i);      data.add(tableHeaderExcelProperty);  }
  ExcelUtil.writeWithTemplate(filePath,data);1234567891011多个Sheet导出1、定义好模型对象
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: 表头名称     * index: 列的号, 0表示第一列     */    @ExcelProperty(value = "姓名", index = 0)    private String name;
    @ExcelProperty(value = "年龄",index = 1)    private int age;
    @ExcelProperty(value = "学校",index = 2)    private String school;}
1234567891011121314151617181920212223242526272829302、调用方法
 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("清华大学" + 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工具类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");      //设置自适应宽度      initSheet.setAutoWidth(Boolean.TRUE);   }
   /**    * 读取少于1000行数据    * @param filePath 文件绝对路径    * @return    */   public static List<Object> readLessThan1000Row(String filePath){      return readLessThan1000RowBySheet(filePath,null);   }
   /**    * 读小于1000行数据, 带样式    * filePath 文件绝对路径    * initSheet :    *      sheetNo: sheet页码,默认为1    *      headLineMun: 从第几行开始读取数据,默认为0, 表示从第一行开始读取    *      clazz: 返回数据List<Object> 中Object的类名    */   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径错误, 文件:{}", filePath);      }finally {         try {            if(fileStream != null){               fileStream.close();            }         } catch (IOException e) {            log.info("excel文件读取失败, 失败原因:{}", e);         }      }      return null;   }
   /**    * 读大于1000行数据    * @param filePath 文件觉得路径    * @return    */   public static List<Object> readMoreThan1000Row(String filePath){      return readMoreThan1000RowBySheet(filePath,null);   }
   /**    * 读大于1000行数据, 带样式    * @param filePath 文件觉得路径    * @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径错误, 文件:{}", filePath);      }finally {         try {            if(fileStream != null){               fileStream.close();            }         } catch (IOException e) {            log.error("excel文件读取失败, 失败原因:{}", e);         }      }      return null;   }
   /**    * 生成excle    * @param filePath  绝对路径, 如:/home/chenmingjian/Downloads/aaa.xlsx    * @param data 数据源    * @param head 表头    */   public static void writeBySimple(String filePath, List<List<Object>> data, List<String> head){      writeSimpleBySheet(filePath,data,head,null);   }
   /**    * 生成excle    * @param filePath 绝对路径, 如:/home/chenmingjian/Downloads/aaa.xlsx    * @param data 数据源    * @param sheet excle页面样式    * @param head 表头    */   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径错误, 文件:{}", filePath);      }finally {         try {            if(writer != null){               writer.finish();            }
            if(outputStream != null){               outputStream.close();            }
         } catch (IOException e) {            log.error("excel文件导出失败, 失败原因:{}", e);         }      }
   }
   /**    * 生成excle    * @param filePath 绝对路径, 如:/home/chenmingjian/Downloads/aaa.xlsx    * @param data 数据源    */   public static void writeWithTemplate(String filePath, List<? extends BaseRowModel> data){      writeWithTemplateAndSheet(filePath,data,null);   }
   /**    * 生成excle    * @param filePath 绝对路径, 如:/home/chenmingjian/Downloads/aaa.xlsx    * @param data 数据源    * @param sheet excle页面样式    */   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径错误, 文件:{}", filePath);      }finally {         try {            if(writer != null){               writer.finish();            }
            if(outputStream != null){               outputStream.close();            }         } catch (IOException e) {            log.error("excel文件导出失败, 失败原因:{}", e);         }      }
   }
   /**    * 生成多Sheet的excle    * @param filePath 绝对路径, 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径错误, 文件:{}", filePath);      }finally {         try {            if(writer != null){               writer.finish();            }
            if(outputStream != null){               outputStream.close();            }         } catch (IOException e) {            log.error("excel文件导出失败, 失败原因:{}", e);         }      }
   }

   /*********************匿名内部类开始,可以提取出去******************************/
   @Data   public static class MultipleSheelPropety{
      private List<? extends BaseRowModel> data;
      private Sheet sheet;   }
   /**    * 解析监听器,    * 每解析一行会回调invoke()方法。    * 整个excel解析结束会执行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 : 当前行的数据       */      @Override      public void invoke(Object object, AnalysisContext context) {         //当前行         // context.getCurrentRowNum()         if (object != null) {            datas.add(object);         }      }

      /**       * 解析完所有数据后会调用该方法       */      @Override      public void doAfterAllAnalysed(AnalysisContext context) {         //解析结束销毁不用的资源      }
   }
   /************************匿名内部类结束,可以提取出去***************************/
}
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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: 测试类 * @author: chenmingjian * @date: 19-4-4 15:24 */@SpringBootTest@RunWith(SpringRunner.class)public class Test {
    /**     * 读取少于1000行的excle     */    @org.junit.Test    public void readLessThan1000Row(){        String filePath = "/home/chenmingjian/Downloads/测试.xlsx";        List<Object> objects = ExcelUtil.readLessThan1000Row(filePath);        objects.forEach(System.out::println);    }
    /**     * 读取少于1000行的excle,可以指定sheet和从几行读起     */    @org.junit.Test    public void readLessThan1000RowBySheet(){        String filePath = "/home/chenmingjian/Downloads/测试.xlsx";        Sheet sheet = new Sheet(1, 1);        List<Object> objects = ExcelUtil.readLessThan1000RowBySheet(filePath,sheet);        objects.forEach(System.out::println);    }
    /**     * 读取大于1000行的excle     * 带sheet参数的方法可参照测试方法readLessThan1000RowBySheet()     */    @org.junit.Test    public void readMoreThan1000Row(){        String filePath = "/home/chenmingjian/Downloads/测试.xlsx";        List<Object> objects = ExcelUtil.readMoreThan1000Row(filePath);        objects.forEach(System.out::println);    }

    /**     * 生成excle     * 带sheet参数的方法可参照测试方法readLessThan1000RowBySheet()     */    @org.junit.Test    public void writeBySimple(){        String filePath = "/home/chenmingjian/Downloads/测试.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("表头1", "表头2", "表头3");        ExcelUtil.writeBySimple(filePath,data,head);    }

    /**     * 生成excle, 带用模型     * 带sheet参数的方法可参照测试方法readLessThan1000RowBySheet()     */    @org.junit.Test    public void writeWithTemplate(){        String filePath = "/home/chenmingjian/Downloads/测试.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("清华大学" + i);            data.add(tableHeaderExcelProperty);        }        ExcelUtil.writeWithTemplate(filePath,data);    }

    /**     * 生成excle, 带用模型,带多个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("清华大学" + 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);
    }

    /*******************匿名内部类,实际开发中该对象要提取出去**********************/            /**     * @description:     * @author: chenmingjian     * @date: 19-4-3 14:44     */    @EqualsAndHashCode(callSuper = true)    @Data    public static class TableHeaderExcelProperty extends BaseRowModel {
        /**         * value: 表头名称         * index: 列的号, 0表示第一列         */        @ExcelProperty(value = "姓名", index = 0)        private String name;
        @ExcelProperty(value = "年龄",index = 1)        private int age;
        @ExcelProperty(value = "学校",index = 2)        private String school;    }
    /*******************匿名内部类,实际开发中该对象要提取出去**********************/
}

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全村少女的梦·: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)这个错误有遇到过吗?博主8个月前查看回复(1)1
码农yssa1125001:easyExcel 不是对 poi 的封装吗,不是也需要poi的 依赖吗?1周前查看回复(2)

cocoboloer:工具类中writeWithMultipleSheel导入多个sheet会报错,Attempting to write a row[0] in the range [0,631] that is already written to disk,我自己更换了,Sheet过时问题。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);         }————————————————版权声明:本文为CSDN博主「冲奶粉的奶爸」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。原文链接:https://blog.csdn.net/qq_32258777/java/article/details/89031479