从excel导入到excel(史上最全的Excel导入导出)

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:

http://github.com/alibaba/easyexcel

文章目录
  • 环境搭建
  • 读取excel文件
    • 默认读取
    • 指定读取
    • 默认读取
    • 指定读取
    • 小于1000行数据
    • 大于1000行数据
  • 导出excle
    • 无模型映射导出
    • 模型映射导出
    • 单个Sheet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

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下面是学生表.xlsx中Sheet1,Sheet2的数据

从excel导入到excel(史上最全的Excel导入导出)(1)

从excel导入到excel(史上最全的Excel导入导出)(2)

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

从excel导入到excel(史上最全的Excel导入导出)(3)

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

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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**********************/ }

作者 | 冲奶粉的奶爸

来源 | http://blog.csdn.net/qq_32258777/article/details/89031479

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