感謝阿里巴巴項(xiàng)目組提供的easyexcel工具類。github地址:https://github.com/alibaba/easyexcel 文章目錄環(huán)境搭建 <dependency> <groupId>com.alibaba</groupId> <artifactId>easyexcel</artifactId> <version>1.1.2-beat1</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.2</version> </dependency>
讀取excel文件小于1000行數(shù)據(jù)默認(rèn)讀取 String filePath = '/home/chenmingjian/Downloads/學(xué)生表.xlsx'; List<Object> objects = ExcelUtil.readLessThan1000Row(filePath);
指定讀取下面是學(xué)生表.xlsx中Sheet1,Sheet2的數(shù)據(jù)String filePath = '/home/chenmingjian/Downloads/學(xué)生表.xlsx'; //第一個(gè)1代表sheet1, 第二個(gè)1代表從第幾行開始讀取數(shù)據(jù),行號(hào)最小值為0 Sheet sheet = new Sheet(1, 1); List<Object> objects = ExcelUtil.readLessThan1000Row(filePath,sheet);
String filePath = '/home/chenmingjian/Downloads/學(xué)生表.xlsx'; Sheet sheet = new Sheet(2, 0); List<Object> objects = ExcelUtil.readLessThan1000Row(filePath,sheet);
大于1000行數(shù)據(jù)默認(rèn)讀取String filePath = '/home/chenmingjian/Downloads/學(xué)生表.xlsx'; List<Object> objects = ExcelUtil.readMoreThan1000Row(filePath);
指定讀取String filePath = '/home/chenmingjian/Downloads/學(xué)生表.xlsx'; Sheet sheet = new Sheet(1, 2); List<Object> objects = ExcelUtil.readMoreThan1000Row(filePath,sheet);
導(dǎo)出excle單個(gè)Sheet導(dǎo)出無模型映射導(dǎo)出String filePath = '/home/chenmingjian/Downloads/測(cè)試.xlsx'; List<List<Object>> data = new ArrayList<>(); data.add(Arrays.asList('111','222','333')); data.add(Arrays.asList('111','222','333')); data.add(Arrays.asList('111','222','333')); List<String> head = Arrays.asList('表頭1', '表頭2', '表頭3'); ExcelUtil.writeBySimple(filePath,data,head);
模型映射導(dǎo)出package com.springboot.utils.excel.test;
import com.alibaba.excel.annotation.ExcelProperty; import com.alibaba.excel.metadata.BaseRowModel; import lombok.Data; import lombok.EqualsAndHashCode;
/** * @description: * @author: chenmingjian * @date: 19-4-3 14:44 */ @EqualsAndHashCode(callSuper = true) @Data public class TableHeaderExcelProperty extends BaseRowModel {
/** * value: 表頭名稱 * index: 列的號(hào), 0表示第一列 */ @ExcelProperty(value = '姓名', index = 0) private String name;
@ExcelProperty(value = '年齡',index = 1) private int age;
@ExcelProperty(value = '學(xué)校',index = 2) private String school; }
String filePath = '/home/chenmingjian/Downloads/測(cè)試.xlsx'; ArrayList<TableHeaderExcelProperty> data = new ArrayList<>(); for(int i = 0; i < 4; i++){ TableHeaderExcelProperty tableHeaderExcelProperty = new TableHeaderExcelProperty(); tableHeaderExcelProperty.setName('cmj' + i); tableHeaderExcelProperty.setAge(22 + i); tableHeaderExcelProperty.setSchool('清華大學(xué)' + i); data.add(tableHeaderExcelProperty); }
ExcelUtil.writeWithTemplate(filePath,data);
多個(gè)Sheet導(dǎo)出package com.springboot.utils.excel.test;
import com.alibaba.excel.annotation.ExcelProperty; import com.alibaba.excel.metadata.BaseRowModel; import lombok.Data; import lombok.EqualsAndHashCode;
/** * @description: * @author: chenmingjian * @date: 19-4-3 14:44 */ @EqualsAndHashCode(callSuper = true) @Data public class TableHeaderExcelProperty extends BaseRowModel {
/** * value: 表頭名稱 * index: 列的號(hào), 0表示第一列 */ @ExcelProperty(value = '姓名', index = 0) private String name;
@ExcelProperty(value = '年齡',index = 1) private int age;
@ExcelProperty(value = '學(xué)校',index = 2) private String school; }
ArrayList<ExcelUtil.MultipleSheelPropety> list1 = new ArrayList<>(); for(int j = 1; j < 4; j++){ ArrayList<TableHeaderExcelProperty> list = new ArrayList<>(); for(int i = 0; i < 4; i++){ TableHeaderExcelProperty tableHeaderExcelProperty = new TableHeaderExcelProperty(); tableHeaderExcelProperty.setName('cmj' + i); tableHeaderExcelProperty.setAge(22 + i); tableHeaderExcelProperty.setSchool('清華大學(xué)' + i); list.add(tableHeaderExcelProperty); }
Sheet sheet = new Sheet(j, 0); sheet.setSheetName('sheet' + j);
ExcelUtil.MultipleSheelPropety multipleSheelPropety = new ExcelUtil.MultipleSheelPropety(); multipleSheelPropety.setData(list); multipleSheelPropety.setSheet(sheet);
list1.add(multipleSheelPropety);
}
ExcelUtil.writeWithMultipleSheel('/home/chenmingjian/Downloads/aaa.xlsx',list1);
工具類package com.springboot.utils.excel;
import com.alibaba.excel.EasyExcelFactory; import com.alibaba.excel.ExcelWriter; import com.alibaba.excel.context.AnalysisContext; import com.alibaba.excel.event.AnalysisEventListener; import com.alibaba.excel.metadata.BaseRowModel; import com.alibaba.excel.metadata.Sheet; import lombok.Data; import lombok.Getter; import lombok.Setter; import lombok.extern.slf4j.Slf4j; import org.springframework.util.CollectionUtils; import org.springframework.util.StringUtils;
import java.io.*; import java.util.ArrayList; import java.util.Collections; import java.util.List;
/** * @description: * @author: chenmingjian * @date: 19-3-18 16:16 */ @Slf4j public class ExcelUtil {
private static Sheet initSheet;
static { initSheet = new Sheet(1, 0); initSheet.setSheetName('sheet'); //設(shè)置自適應(yīng)寬度 initSheet.setAutoWidth(Boolean.TRUE); }
/** * 讀取少于1000行數(shù)據(jù) * @param filePath 文件絕對(duì)路徑 * @return */ public static List<Object> readLessThan1000Row(String filePath){ return readLessThan1000RowBySheet(filePath,null); }
/** * 讀小于1000行數(shù)據(jù), 帶樣式 * filePath 文件絕對(duì)路徑 * initSheet : * sheetNo: sheet頁(yè)碼,默認(rèn)為1 * headLineMun: 從第幾行開始讀取數(shù)據(jù),默認(rèn)為0, 表示從第一行開始讀取 * clazz: 返回?cái)?shù)據(jù)List<Object> 中Object的類名 */ public static List<Object> readLessThan1000RowBySheet(String filePath, Sheet sheet){ if(!StringUtils.hasText(filePath)){ return null; }
sheet = sheet != null ? sheet : initSheet;
InputStream fileStream = null; try { fileStream = new FileInputStream(filePath); return EasyExcelFactory.read(fileStream, sheet); } catch (FileNotFoundException e) { log.info('找不到文件或文件路徑錯(cuò)誤, 文件:{}', filePath); }finally { try { if(fileStream != null){ fileStream.close(); } } catch (IOException e) { log.info('excel文件讀取失敗, 失敗原因:{}', e); } } return null; }
/** * 讀大于1000行數(shù)據(jù) * @param filePath 文件覺得路徑 * @return */ public static List<Object> readMoreThan1000Row(String filePath){ return readMoreThan1000RowBySheet(filePath,null); }
/** * 讀大于1000行數(shù)據(jù), 帶樣式 * @param filePath 文件覺得路徑 * @return */ public static List<Object> readMoreThan1000RowBySheet(String filePath, Sheet sheet){ if(!StringUtils.hasText(filePath)){ return null; }
sheet = sheet != null ? sheet : initSheet;
InputStream fileStream = null; try { fileStream = new FileInputStream(filePath); ExcelListener excelListener = new ExcelListener(); EasyExcelFactory.readBySax(fileStream, sheet, excelListener); return excelListener.getDatas(); } catch (FileNotFoundException e) { log.error('找不到文件或文件路徑錯(cuò)誤, 文件:{}', filePath); }finally { try { if(fileStream != null){ fileStream.close(); } } catch (IOException e) { log.error('excel文件讀取失敗, 失敗原因:{}', e); } } return null; }
/** * 生成excle * @param filePath 絕對(duì)路徑, 如:/home/chenmingjian/Downloads/aaa.xlsx * @param data 數(shù)據(jù)源 * @param head 表頭 */ public static void writeBySimple(String filePath, List<List<Object>> data, List<String> head){ writeSimpleBySheet(filePath,data,head,null); }
/** * 生成excle * @param filePath 絕對(duì)路徑, 如:/home/chenmingjian/Downloads/aaa.xlsx * @param data 數(shù)據(jù)源 * @param sheet excle頁(yè)面樣式 * @param head 表頭 */ public static void writeSimpleBySheet(String filePath, List<List<Object>> data, List<String> head, Sheet sheet){ sheet = (sheet != null) ? sheet : initSheet;
if(head != null){ List<List<String>> list = new ArrayList<>(); head.forEach(h -> list.add(Collections.singletonList(h))); sheet.setHead(list); }
OutputStream outputStream = null; ExcelWriter writer = null; try { outputStream = new FileOutputStream(filePath); writer = EasyExcelFactory.getWriter(outputStream); writer.write1(data,sheet); } catch (FileNotFoundException e) { log.error('找不到文件或文件路徑錯(cuò)誤, 文件:{}', filePath); }finally { try { if(writer != null){ writer.finish(); }
if(outputStream != null){ outputStream.close(); }
} catch (IOException e) { log.error('excel文件導(dǎo)出失敗, 失敗原因:{}', e); } }
}
/** * 生成excle * @param filePath 絕對(duì)路徑, 如:/home/chenmingjian/Downloads/aaa.xlsx * @param data 數(shù)據(jù)源 */ public static void writeWithTemplate(String filePath, List<? extends BaseRowModel> data){ writeWithTemplateAndSheet(filePath,data,null); }
/** * 生成excle * @param filePath 絕對(duì)路徑, 如:/home/chenmingjian/Downloads/aaa.xlsx * @param data 數(shù)據(jù)源 * @param sheet excle頁(yè)面樣式 */ public static void writeWithTemplateAndSheet(String filePath, List<? extends BaseRowModel> data, Sheet sheet){ if(CollectionUtils.isEmpty(data)){ return; }
sheet = (sheet != null) ? sheet : initSheet; sheet.setClazz(data.get(0).getClass());
OutputStream outputStream = null; ExcelWriter writer = null; try { outputStream = new FileOutputStream(filePath); writer = EasyExcelFactory.getWriter(outputStream); writer.write(data,sheet); } catch (FileNotFoundException e) { log.error('找不到文件或文件路徑錯(cuò)誤, 文件:{}', filePath); }finally { try { if(writer != null){ writer.finish(); }
if(outputStream != null){ outputStream.close(); } } catch (IOException e) { log.error('excel文件導(dǎo)出失敗, 失敗原因:{}', e); } }
}
/** * 生成多Sheet的excle * @param filePath 絕對(duì)路徑, 如:/home/chenmingjian/Downloads/aaa.xlsx * @param multipleSheelPropetys */ public static void writeWithMultipleSheel(String filePath,List<MultipleSheelPropety> multipleSheelPropetys){ if(CollectionUtils.isEmpty(multipleSheelPropetys)){ return; }
OutputStream outputStream = null; ExcelWriter writer = null; try { outputStream = new FileOutputStream(filePath); writer = EasyExcelFactory.getWriter(outputStream); for (MultipleSheelPropety multipleSheelPropety : multipleSheelPropetys) { Sheet sheet = multipleSheelPropety.getSheet() != null ? multipleSheelPropety.getSheet() : initSheet; if(!CollectionUtils.isEmpty(multipleSheelPropety.getData())){ sheet.setClazz(multipleSheelPropety.getData().get(0).getClass()); } writer.write(multipleSheelPropety.getData(), sheet); }
} catch (FileNotFoundException e) { log.error('找不到文件或文件路徑錯(cuò)誤, 文件:{}', filePath); }finally { try { if(writer != null){ writer.finish(); }
if(outputStream != null){ outputStream.close(); } } catch (IOException e) { log.error('excel文件導(dǎo)出失敗, 失敗原因:{}', e); } }
}
/*********************匿名內(nèi)部類開始,可以提取出去******************************/
@Data public static class MultipleSheelPropety{
private List<? extends BaseRowModel> data;
private Sheet sheet; }
/** * 解析監(jiān)聽器, * 每解析一行會(huì)回調(diào)invoke()方法。 * 整個(gè)excel解析結(jié)束會(huì)執(zhí)行doAfterAllAnalysed()方法 * * @author: chenmingjian * @date: 19-4-3 14:11 */ @Getter @Setter public static class ExcelListener extends AnalysisEventListener {
private List<Object> datas = new ArrayList<>();
/** * 逐行解析 * object : 當(dāng)前行的數(shù)據(jù) */ @Override public void invoke(Object object, AnalysisContext context) { //當(dāng)前行 // context.getCurrentRowNum() if (object != null) { datas.add(object); } }
/** * 解析完所有數(shù)據(jù)后會(huì)調(diào)用該方法 */ @Override public void doAfterAllAnalysed(AnalysisContext context) { //解析結(jié)束銷毀不用的資源 }
}
/************************匿名內(nèi)部類結(jié)束,可以提取出去***************************/
}
測(cè)試類package com.springboot.utils.excel;
import com.alibaba.excel.annotation.ExcelProperty; import com.alibaba.excel.metadata.BaseRowModel; import com.alibaba.excel.metadata.Sheet; import lombok.Data; import lombok.EqualsAndHashCode; import org.junit.runner.RunWith; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.context.junit4.SpringRunner;
import java.util.ArrayList; import java.util.Arrays; import java.util.List;
/** * @description: 測(cè)試類 * @author: chenmingjian * @date: 19-4-4 15:24 */ @SpringBootTest @RunWith(SpringRunner.class) public class Test {
/** * 讀取少于1000行的excle */ @org.junit.Test public void readLessThan1000Row(){ String filePath = '/home/chenmingjian/Downloads/測(cè)試.xlsx'; List<Object> objects = ExcelUtil.readLessThan1000Row(filePath); objects.forEach(System.out::println); }
/** * 讀取少于1000行的excle,可以指定sheet和從幾行讀起 */ @org.junit.Test public void readLessThan1000RowBySheet(){ String filePath = '/home/chenmingjian/Downloads/測(cè)試.xlsx'; Sheet sheet = new Sheet(1, 1); List<Object> objects = ExcelUtil.readLessThan1000RowBySheet(filePath,sheet); objects.forEach(System.out::println); }
/** * 讀取大于1000行的excle * 帶sheet參數(shù)的方法可參照測(cè)試方法readLessThan1000RowBySheet() */ @org.junit.Test public void readMoreThan1000Row(){ String filePath = '/home/chenmingjian/Downloads/測(cè)試.xlsx'; List<Object> objects = ExcelUtil.readMoreThan1000Row(filePath); objects.forEach(System.out::println); }
/** * 生成excle * 帶sheet參數(shù)的方法可參照測(cè)試方法readLessThan1000RowBySheet() */ @org.junit.Test public void writeBySimple(){ String filePath = '/home/chenmingjian/Downloads/測(cè)試.xlsx'; List<List<Object>> data = new ArrayList<>(); data.add(Arrays.asList('111','222','333')); data.add(Arrays.asList('111','222','333')); data.add(Arrays.asList('111','222','333')); List<String> head = Arrays.asList('表頭1', '表頭2', '表頭3'); ExcelUtil.writeBySimple(filePath,data,head); }
/** * 生成excle, 帶用模型 * 帶sheet參數(shù)的方法可參照測(cè)試方法readLessThan1000RowBySheet() */ @org.junit.Test public void writeWithTemplate(){ String filePath = '/home/chenmingjian/Downloads/測(cè)試.xlsx'; ArrayList<TableHeaderExcelProperty> data = new ArrayList<>(); for(int i = 0; i < 4; i++){ TableHeaderExcelProperty tableHeaderExcelProperty = new TableHeaderExcelProperty(); tableHeaderExcelProperty.setName('cmj' + i); tableHeaderExcelProperty.setAge(22 + i); tableHeaderExcelProperty.setSchool('清華大學(xué)' + i); data.add(tableHeaderExcelProperty); } ExcelUtil.writeWithTemplate(filePath,data); }
/** * 生成excle, 帶用模型,帶多個(gè)sheet */ @org.junit.Test public void writeWithMultipleSheel(){ ArrayList<ExcelUtil.MultipleSheelPropety> list1 = new ArrayList<>(); for(int j = 1; j < 4; j++){ ArrayList<TableHeaderExcelProperty> list = new ArrayList<>(); for(int i = 0; i < 4; i++){ TableHeaderExcelProperty tableHeaderExcelProperty = new TableHeaderExcelProperty(); tableHeaderExcelProperty.setName('cmj' + i); tableHeaderExcelProperty.setAge(22 + i); tableHeaderExcelProperty.setSchool('清華大學(xué)' + i); list.add(tableHeaderExcelProperty); }
Sheet sheet = new Sheet(j, 0); sheet.setSheetName('sheet' + j);
ExcelUtil.MultipleSheelPropety multipleSheelPropety = new ExcelUtil.MultipleSheelPropety(); multipleSheelPropety.setData(list); multipleSheelPropety.setSheet(sheet);
list1.add(multipleSheelPropety);
}
ExcelUtil.writeWithMultipleSheel('/home/chenmingjian/Downloads/aaa.xlsx',list1);
}
/*******************匿名內(nèi)部類,實(shí)際開發(fā)中該對(duì)象要提取出去**********************/ /** * @description: * @author: chenmingjian * @date: 19-4-3 14:44 */ @EqualsAndHashCode(callSuper = true) @Data public static class TableHeaderExcelProperty extends BaseRowModel {
/** * value: 表頭名稱 * index: 列的號(hào), 0表示第一列 */ @ExcelProperty(value = '姓名', index = 0) private String name;
@ExcelProperty(value = '年齡',index = 1) private int age;
@ExcelProperty(value = '學(xué)校',index = 2) private String school; }
/*******************匿名內(nèi)部類,實(shí)際開發(fā)中該對(duì)象要提取出去**********************/
}
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