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Springboot 指定自定义模板导出Excel文件

news 来源：原创 2024/5/4 19:06:23

前言

之前写过一篇极其简单的excel导入导出，是单个文件的：
Springboot 最简单的结合MYSQL数据实现EXCEL表格导出及数据导入_小目标青年的博客-CSDN博客

还写过一篇单个，多个 excel文件导出，转成ZIP包的：
Springboot 导出Excel文件，多个需要压缩成 zip 包_小目标青年的博客-CSDN博客

然后：

于是该篇就来了，指定模板（自定义）导出数据，就像：

正文

开始实战：

pom.xml依赖：


        <!-- 导入和导出-->
        <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-base</artifactId>
            <version>3.0.3</version>
        </dependency>
        <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-web</artifactId>
            <version>3.0.3</version>
        </dependency>
        <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-annotation</artifactId>
            <version>3.0.3</version>
        </dependency>

我们导出数据的实体类 UserExcelDTO.java

import cn.afterturn.easypoi.excel.annotation.Excel;

/**
 * @Author: JCccc
 * @Date: 2022-7-14 10:58
 * @Description:
 */
public class UserExcelDTO {
    @Excel(name = "学号", height = 8, width = 13, isImportField = "true")
    private Integer id;
    @Excel(name = "姓名", height = 8, width = 13, isImportField = "true")
    private String  userName;
    @Excel(name = "年龄", height = 8, width = 13, isImportField = "true")
    private String  userAge;

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", userName='" + userName + '\'' +
                ", userAge='" + userAge + '\'' +
                '}';
    }

    public UserExcelDTO() {
    }

    public UserExcelDTO(Integer id, String userName, String userAge) {
        this.id = id;
        this.userName = userName;
        this.userAge = userAge;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getUserAge() {
        return userAge;
    }

    public void setUserAge(String userAge) {
        this.userAge = userAge;
    }
}

里面使用了 @Excel注解标记一下相关字段

然后自定义模板，注意里面细节:

每一行数据都是一个对象，都在list 里面，

所以看到首个字段和末尾最后的字段是有括号的｛｝：

示例格式：

{{$fe: list t.id

t.userName

t.userAge}}

然后把自定义模板文件丢到静态资源路径下：

然后是实现使用自定义模板，填充list数据导出excel文件：


    /**
     * excel导出 列表 指定模板
     *
     * @return
     */
    @GetMapping(value = "/exportAssignTemplateExcel")
    public void opportunityExport(HttpServletResponse response) {
        List<UserExcelDTO> exportList = new ArrayList<>();

        UserExcelDTO userExcel1=new UserExcelDTO(1001,"JCccc","18");
        UserExcelDTO userExcel2=new UserExcelDTO(1002,"ACccc","29");
        UserExcelDTO userExcel3=new UserExcelDTO(1003,"GCccc","50");

        exportList.add(userExcel1);
        exportList.add(userExcel2);
        exportList.add(userExcel3);

        Map map = Maps.newHashMap();
        map.put("list", exportList);
        //获取导出模板地址
        ClassPathResource classPathResource = new ClassPathResource("static/export/template/MyUserTemplate.xlsx");
        String path = classPathResource.getPath();
        TemplateExportParams templateExportParams1 = new TemplateExportParams(path);
        Workbook wb = ExcelExportUtil.exportExcel(templateExportParams1, map);
        String time = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy_MM_dd_HH_mm_ss"));
        String fileName = "用户数据"+time+".xlsx";
        try {
            response.setContentType("application/octet-stream;charset=utf-8");
            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "utf-8"));
            response.flushBuffer();
            wb.write(response.getOutputStream());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

代码简析：