EasyExcel导出包含多个sheet页的Excel

1.引入依赖

引入如下的EasyExcel的依赖，或直接下载jar包

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>easyexcel</artifactId>
            <version>3.1.1</version>
        </dependency>

2.构建数据封装bean（测试数据封装bean，除了类中的注解，其他信息无需过多关注）

2.1User类

import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.annotation.write.style.ColumnWidth;
import com.alibaba.excel.annotation.write.style.ContentStyle;
import com.alibaba.excel.enums.poi.HorizontalAlignmentEnum;
import com.alibaba.excel.enums.poi.VerticalAlignmentEnum;

// @ColumnWidth作用：设置全局列宽为20
@ColumnWidth(20)
// @ContentStyle作用：设置全局内容居中
@ContentStyle(verticalAlignment = VerticalAlignmentEnum.CENTER, horizontalAlignment = HorizontalAlignmentEnum.CENTER)
public class User {

    // @ExcelProperty作用：设置列标题名称
    @ExcelProperty("姓名")
    private String name;
    @ExcelProperty("年龄")
    private int age;
    @ExcelProperty("身高")
    private int height;

    public User() {
    }

    public User(String name, int age, int height) {
        this.name = name;
        this.age = age;
        this.height = height;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public int getHeight() {
        return height;
    }

    public void setHeight(int height) {
        this.height = height;
    }

    @Override
    public String toString() {
        return "User{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", height=" + height +
                '}';
    }
}}
}", height=" + height +
                '}';
    }
}

2.2Department类

import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.annotation.write.style.ColumnWidth;
import com.alibaba.excel.annotation.write.style.ContentStyle;
import com.alibaba.excel.enums.poi.HorizontalAlignmentEnum;
import com.alibaba.excel.enums.poi.VerticalAlignmentEnum;

// 设置全局列宽为20
@ColumnWidth(20)
// 设置全局内容居中
@ContentStyle(verticalAlignment = VerticalAlignmentEnum.CENTER, horizontalAlignment = HorizontalAlignmentEnum.CENTER)
public class Department {

    // @ExcelProperty作用：设置列标题名称
    @ExcelProperty({"部门基本属性", "部门名称"})
    private String deptName;

    @ExcelProperty({"部门基本属性", "部门Code"})
    private String deptCode;

    @ExcelProperty({"部门其他属性", "部门地址"})
    private String deptLocation;

    @ExcelProperty({"部门其他属性", "部门类型"})
    private String deptType;

    public Department() {
    }

    public Department(String deptName, String deptCode, String deptLocation, String deptType) {
        this.deptName = deptName;
        this.deptCode = deptCode;
        this.deptLocation = deptLocation;
        this.deptType = deptType;
    }

    public String getDeptName() {
        return deptName;
    }

    public void setDeptName(String deptName) {
        this.deptName = deptName;
    }

    public String getDeptCode() {
        return deptCode;
    }

    public void setDeptCode(String deptCode) {
        this.deptCode = deptCode;
    }

    public String getDeptLocation() {
        return deptLocation;
    }

    public void setDeptLocation(String deptLocation) {
        this.deptLocation = deptLocation;
    }

    public String getDeptType() {
        return deptType;
    }

    public void setDeptType(String deptType) {
        this.deptType = deptType;
    }

    @Override
    public String toString() {
        return "Department{" +
                "deptName='" + deptName + '\'' +
                ", deptCode='" + deptCode + '\'' +
                ", deptLocation='" + deptLocation + '\'' +
                ", deptType='" + deptType + '\'' +
                '}';
    }
}   ", deptType='" + deptType + '\'' +
                '}';
    }
}

2.3Goods类

import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.annotation.write.style.ColumnWidth;
import com.alibaba.excel.annotation.write.style.ContentStyle;
import com.alibaba.excel.enums.poi.HorizontalAlignmentEnum;
import com.alibaba.excel.enums.poi.VerticalAlignmentEnum;

// 设置全局列宽为20
@ColumnWidth(20)
// 设置全局内容居中
@ContentStyle(verticalAlignment = VerticalAlignmentEnum.CENTER, horizontalAlignment = HorizontalAlignmentEnum.CENTER)
public class Goods {

    // @ExcelProperty作用：设置列标题名称
    @ExcelProperty({"零食基本属性", "名称"})
    private String goodsName;

    @ExcelProperty({"零食基本属性", "类型"})
    private String goodsType;

    @ExcelProperty({"相关时间", "生产日期"})
    private String goodsProduceDate;

    @ExcelProperty({"相关时间", "保质期"})
    private String goods2Date;

    @ExcelProperty({"工厂", "核心厂"})
    private String goodsFactoryAddressMain;

    @ExcelProperty({"工厂", "副厂"})
    private String goodsFactoryAddressChild;

    public Goods() {
    }

    public Goods(String goodsName, String goodsType, String goodsProduceDate, String goods2Date, String goodsFactoryAddressMain, String goodsFactoryAddressChild) {
        this.goodsName = goodsName;
        this.goodsType = goodsType;
        this.goodsProduceDate = goodsProduceDate;
        this.goods2Date = goods2Date;
        this.goodsFactoryAddressMain = goodsFactoryAddressMain;
        this.goodsFactoryAddressChild = goodsFactoryAddressChild;
    }

    public String getGoodsName() {
        return goodsName;
    }

    public void setGoodsName(String goodsName) {
        this.goodsName = goodsName;
    }

    public String getGoodsType() {
        return goodsType;
    }

    public void setGoodsType(String goodsType) {
        this.goodsType = goodsType;
    }

    public String getGoodsProduceDate() {
        return goodsProduceDate;
    }

    public void setGoodsProduceDate(String goodsProduceDate) {
        this.goodsProduceDate = goodsProduceDate;
    }

    public String getGoods2Date() {
        return goods2Date;
    }

    public void setGoods2Date(String goods2Date) {
        this.goods2Date = goods2Date;
    }

    public String getGoodsFactoryAddressMain() {
        return goodsFactoryAddressMain;
    }

    public void setGoodsFactoryAddressMain(String goodsFactoryAddressMain) {
        this.goodsFactoryAddressMain = goodsFactoryAddressMain;
    }

    public String getGoodsFactoryAddressChild() {
        return goodsFactoryAddressChild;
    }

    public void setGoodsFactoryAddressChild(String goodsFactoryAddressChild) {
        this.goodsFactoryAddressChild = goodsFactoryAddressChild;
    }

    @Override
    public String toString() {
        return "Goods{" +
                "goodsName='" + goodsName + '\'' +
                ", goodsType='" + goodsType + '\'' +
                ", goodsProduceDate='" + goodsProduceDate + '\'' +
                ", goods2Date='" + goods2Date + '\'' +
                ", goodsFactoryAddressMain='" + goodsFactoryAddressMain + '\'' +
                ", goodsFactoryAddressChild='" + goodsFactoryAddressChild + '\'' +
                '}';
    }
}

3.SheetInfoBean类

SheetInfoBean是用来封装sheet页相关信息的，使用bean将sheet页相关信息封装起来，可以使代码更加简洁优雅，可以根据实际需求，自行设计bean

import java.util.List;

public class SheetInfoBean {

    /**
     * sheet页名称
     */
    private String sheetName;

    /**
     * sheet标题bean
     */
    private Class<?> headClass;

    /**
     * sheet页数据
     */
    private List<?> dataList;

    public SheetInfoBean() {
    }

    public SheetInfoBean(String sheetName, Class<?> headClass, List<?> dataList) {
        this.sheetName = sheetName;
        this.headClass = headClass;
        this.dataList = dataList;
    }

    public String getSheetName() {
        return sheetName;
    }

    public void setSheetName(String sheetName) {
        this.sheetName = sheetName;
    }

    public Class<?> getHeadClass() {
        return headClass;
    }

    public void setHeadClass(Class<?> headClass) {
        this.headClass = headClass;
    }

    public List<?> getDataList() {
        return dataList;
    }

    public void setDataList(List<?> dataList) {
        this.dataList = dataList;
    }

    @Override
    public String toString() {
        return "SheetInfoBean{" +
                "sheetName='" + sheetName + '\'' +
                ", headClass=" + headClass +
                ", dataList=" + dataList +
                '}';
    }
}

4.测试

以下是测试代码

@Test
    void test04() {
        // 构造用户数据
        List<User> userList = new ArrayList<>();
        userList.add(new User("小红", 18, 168));
        userList.add(new User("小白", 17, 165));
        userList.add(new User("小蓝", 18, 169));

        // 构造部门数据
        List<Department> deptList = new ArrayList<>();
        deptList.add(new Department("java开发部", "DEV001", "南京", "总部"));
        deptList.add(new Department("测试部", "TEST001", "上海", "研发中心"));
        deptList.add(new Department("财务", "ECONOMY001", "南京", "总部"));

        // 构造产品数据
        List<Goods> goodsList = new ArrayList<>();
        goodsList.add(new Goods("小面包", "速食", "2023-07-21", "3天", "成都", "上海"));
        goodsList.add(new Goods("旺旺仙贝", "膨化食品", "2023-07-21", "3天", "仙贝中心", "山寨仙贝厂"));
        goodsList.add(new Goods("领克03", "汽车", "2023-07-21", "永久", "领克工厂", "领克副厂"));

        // 构造各个sheet页相关信息
        List<SheetInfoBean> sheetInfoList = new LinkedList<>();
        sheetInfoList.add(new SheetInfoBean("用户信息", User.class, userList));
        sheetInfoList.add(new SheetInfoBean("部门信息", Department.class, deptList));
        sheetInfoList.add(new SheetInfoBean("产品信息", Goods.class, goodsList));

        // 导出文件
        File file = new File("C:\\Users\\Administrator\\Desktop\\多sheet导出测试.xlsx");
        try(ExcelWriter excelWriter = EasyExcel.write(file).build()) {
            WriteSheet writeSheet;
            for (SheetInfoBean bean : sheetInfoList) {
                // 构建sheet对象
                writeSheet = EasyExcel.writerSheet(bean.getSheetName()).head(bean.getHeadClass()).build();
                // 写出sheet数据
                excelWriter.write(bean.getDataList(), writeSheet);
            }
            // 关流
            excelWriter.finish();
        } catch (Exception e) {
            // do something you want
        }
    }

5.运行结果

6.总结

以上是EasyExcel一个Excel文件导出多个sheet页的demo代码，其中重点代码为

 try(ExcelWriter excelWriter = EasyExcel.write(file).build()) {
  WriteSheet writeSheet;
  for (SheetInfoBean bean : sheetInfoList) {
     // 构建sheet对象
     writeSheet = EasyExcel.writerSheet(bean.getSheetName()).head(bean.getHeadClass()).build();
     // 写出sheet数据
     excelWriter.write(bean.getDataList(), writeSheet);
  }
  // 关流
  excelWriter.finish();
} catch (Exception e) {
 // do something you want
}

大家可以根据自己的需求，将该代码片段进行改造或封装成工具类，以适应自己的业务需求