• 史上最全的Excel导入导出之easyexcel


    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***************************/
    }
    123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312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**********************/
    }

    123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155
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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

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  • 原文地址:https://www.cnblogs.com/shihaiming/p/12955692.html
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