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：
*/
@Data
public class Sheet1DataVo {
@ExcelIgnore
private 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 {
@ExcelIgnore
private 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sheet
WriteSheet writeSheet = EasyExcel.writerSheet(0, "Sheet1DataVo").head(Sheet1DataVo.class).build();
excelWriter.write(sheet1DataVos, writeSheet);
//创建一个新的sheet
WriteSheet 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
运行
完整代码地址gitee
https://gitee.com/jy_yjy/tool-box.git