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springBoot集成easyExcel 实现文件上传

news 2025/8/10 9:00:09

文件上传案例

添加依赖

		<dependency><groupId>com.alibaba</groupId><artifactId>easyexcel</artifactId><version>2.2.6</version></dependency>

添加实体对象

import lombok.Data;@Data
public class Student {private Long id;//姓名private String name;//班级private String classes;//所属学院private String college;//别名private String alias;
}

添加对象监听器

package com.wl.std.kaixin.listener;import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.wl.std.kaixin.controller.Student;
import lombok.Getter;import java.util.ArrayList;
import java.util.List;public class StudentListener extends AnalysisEventListener<Student> {@Getterprivate List<Student> studentList = new ArrayList<>();public StudentListener(){super();studentList.clear();}/*** 每一条数据解析都会调用*/@Overridepublic void invoke(Student student, AnalysisContext analysisContext) {studentList.add(student);}/*** 所有数据解析完成都会调用*/@Overridepublic void doAfterAllAnalysed(AnalysisContext analysisContext) {studentList.forEach(System.out::println);}
}

添加controller

package com.wl.std.kaixin.controller;import com.alibaba.excel.EasyExcel;
import com.wl.std.kaixin.listener.StudentListener;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;import java.util.List;@RequestMapping("/excel")
@Controller
public class OperateExcelController {//方法1：读取指定的Excel@GetMapping(value = "/readExcel")@ResponseBodypublic List<Student> readExcel() {String fileName = "student.xls";StudentListener teacherListener = new StudentListener();EasyExcel.read(fileName, Student.class, teacherListener).sheet().doRead();return teacherListener.getStudentList();}
}

编写一个excel 实现读取excel 的数据的功能
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代码运行效果:

注意高版本的JDK 可能会报反射错误,需要添加JVM 参数
java.lang.ClassFormatError accessible: module java.base does not “opens java.lang” to unnamed module @7229724f 错误信息
在启动参数里添加如下信息
–add-opens java.base/java.lang=ALL-UNNAMED
开发工具中添加如下:
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