SpringBoot中利用EasyExcel+aop实现一个通用Excel导出功能

一、结果展示

主要功能：可以根据前端传递的参数，导出指定列、指定行

1.1 案例一

1. 前端页面
   
2. 传递参数

{
    "excelName": "导出用户信息1725738666946",
    "sheetName": "导出用户信息",
    "fieldList": [
        {
            "fieldName": "userId",
            "fieldDesc": "用户id"
        },
        {
            "fieldName": "age",
            "fieldDesc": "年龄"
        },
        {
            "fieldName": "address",
            "fieldDesc": "地址"
        }
    ]
}

3. 导出的文件
   

1.2 案例二

1. 前端页面
   

2. 传递参数

{
    "excelName": "导出用户信息1725739080367",
    "sheetName": "导出用户信息",
    "fieldList": [
        {
            "fieldName": "userId",
            "fieldDesc": "用户id"
        },
        {
            "fieldName": "address",
            "fieldDesc": "地址"
        },
        {
            "fieldName": "age",
            "fieldDesc": "年龄"
        },
        {
            "fieldName": "userName",
            "fieldDesc": "用户名"
        }
    ],
    "userIdList": [
        "1",
        "3",
        "5",
        "8",
        "9"
    ]
}

3. 导出结果
   

二、代码实现

工具类代码结构

2.1 入参、出参

UserExportRequest

public class UserExportRequest extends ExcelExportRequest {
    /**
     * 要导出的用户id列表，不传，则导出所有用户记录
     */
    private List<Integer> userIdList;

    public List<Integer> getUserIdList() {...}
    public void setUserIdList(List<Integer> userIdList) {...}
}

---继承自通用的ExcelExportRequest类---
public class ExcelExportRequest {
    /**
     * excel名称
     */
    private String excelName;

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

    /**
     * 导出字段有序列表
     */
    private List<ExcelExportField> fieldList;

    public String getSheetName() {...}
    public void setSheetName(String sheetName) {...}
    public String getExcelName() {...}
    public void setExcelName(String excelName) {...}
    public List<ExcelExportField> getFieldList() {...}
    public void setFieldList(List<ExcelExportField> fieldList) {...}
}

ExcelExportResponse

public class ExcelExportResponse {
    //导出的excel文件名称
    private String excelName;
    // sheet列表数据
    private List<ExcelSheet> sheetList;

    public String getExcelName() {...}
    public void setExcelName(String excelName) {...}
    public List<ExcelSheet> getSheetList() {...}
    public void setSheetList(List<ExcelSheet> sheetList) {...}
}

2.2 生成ExcelExportResponse的逻辑

2.3 aop通知

2.4 下载Excel