alibaba easyexcel 导出excel使用

需求

传统导出，一般都是通过Workbook > Sheet > Row > Cell 获取详细Cell 设置值，比较麻烦，偶然遇到alibaba easyexcel 直接通过注解设置哪些需要导出哪些忽略，发现特别好用。

pom依赖

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

完整pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.demo</groupId><artifactId>tool-box-parent</artifactId><version>1.0-SNAPSHOT</version></parent><groupId>org.example</groupId><artifactId>tool-box-export</artifactId><properties><maven.compiler.source>17</maven.compiler.source><maven.compiler.target>17</maven.compiler.target><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><dependency><groupId>org.demo</groupId><artifactId>tool-box-api</artifactId><version>1.0-SNAPSHOT</version></dependency><dependency><groupId>jakarta.servlet</groupId><artifactId>jakarta.servlet-api</artifactId><version>5.0.0</version> <!-- 使用适合您项目的最新稳定版本 --><scope>provided</scope> <!-- 通常设置为provided，因为Servlet容器（如Tomcat）提供了实现 --></dependency><dependency><groupId>com.alibaba</groupId><artifactId>easyexcel</artifactId><version>3.1.1</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.28</version><scope>provided</scope></dependency></dependencies>
</project>

Sheet1DataVo

package org.example.export.vo;import com.alibaba.excel.annotation.ExcelIgnore;
import com.alibaba.excel.annotation.ExcelProperty;
import lombok.Data;import java.util.Date;/*** 时间：2024/6/24* 作者：jinyu* 描述：*/
@Datapublic class Sheet1DataVo {@ExcelIgnoreprivate Long id;@ExcelProperty("名字2")private String name;@ExcelProperty("年龄2")private Integer age;@ExcelProperty("时间2")private Date createTime;public Sheet1DataVo(Long id, String name, Integer age, Date createTime) {this.id = id;this.name = name;this.age = age;this.createTime = createTime;}
}

Sheet2DataVo

package org.example.export.vo;import com.alibaba.excel.annotation.ExcelIgnore;
import com.alibaba.excel.annotation.ExcelProperty;
import lombok.Data;import java.util.Date;/*** 时间：2024/6/24* 作者：jinyu* 描述：*/@Data
public class Sheet2DataVo {@ExcelIgnoreprivate Long id;@ExcelProperty("名字")private String name;@ExcelProperty("年龄")private Integer age;@ExcelProperty("时间")private Date createTime;public Sheet2DataVo(Long id, String name, Integer age, Date createTime) {this.id = id;this.name = name;this.age = age;this.createTime = createTime;}
}

导出具体方法

package org.example.export.controller;import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.ExcelWriter;
import com.alibaba.excel.write.metadata.WriteSheet;
import io.swagger.v3.oas.annotations.tags.Tag;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.example.export.vo.Sheet1DataVo;
import org.example.export.vo.Sheet2DataVo;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;/*** 时间：2024/6/24* 作者：jinyu* 描述：*/@RestController
@Tag(name = "导出模板", description = "导出模板")@Slf4j
public class ExportController {@GetMapping("/exportDemo")public void exportDemo(@RequestParam("name") String name, HttpServletResponse response, HttpServletRequest request)  {log.info("name:{}",name);List<Sheet1DataVo> sheet1DataVos = new ArrayList<>();Sheet1DataVo sheet1DataVo = new Sheet1DataVo(1l,name,18,new Date());sheet1DataVos.add(sheet1DataVo);List<Sheet2DataVo> sheet2DataVos = new ArrayList<>();Sheet2DataVo sheet1DataVo1 = new Sheet2DataVo(1l,name,18,new Date());sheet2DataVos.add(sheet1DataVo1);response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");response.setCharacterEncoding("utf-8");// 这里URLEncoder.encode可以防止中文乱码 当然和easyexcel没有关系String fileName = null;try {fileName = URLEncoder.encode("导出测试", "UTF-8").replaceAll("\\+", "%20");} catch (UnsupportedEncodingException e) {throw new RuntimeException(e);}response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".xlsx");ExcelWriter excelWriter = null;try{excelWriter = EasyExcel.write(response.getOutputStream()).build();//创建一个sheetWriteSheet writeSheet = EasyExcel.writerSheet(0, "Sheet1DataVo").head(Sheet1DataVo.class).build();excelWriter.write(sheet1DataVos, writeSheet);//创建一个新的sheetWriteSheet writeSheet1 = EasyExcel.writerSheet(1, "Sheet2DataVo").head(Sheet2DataVo.class).build();excelWriter.write(sheet2DataVos, writeSheet1);} catch (IOException e) {throw new RuntimeException(e);} finally {if(excelWriter != null){excelWriter.finish();}}}
}

运行报错：
spring boot 报错 No primary or single unique constructor found for interface javax.servlet.http.HttpServletRequest
解决办法参考：

 https://blog.csdn.net/weixin_41491295/article/details/139105046?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522171921105216800180634339%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fall.%2522%257D&request_id=171921105216800180634339&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~first_rank_ecpm_v1~rank_v31_ecpm-4-139105046-null-null.142^v100^pc_search_result_base3&utm_term=java.lang.IllegalStateException%3A%20No%20primary%20or%20single%20unique%20constructor%20found%20for%20interface%20javax.servlet.http.HttpServletResponse&spm=1018.2226.3001.4187