EasyExcel是一个基于Java的简单、省内存的读写Excel的开源项目。
/alibaba/easyexcel
一、导入maven坐标
Lombok可选，不导入的话需要手动写getter、setter、tostring
<!-- easyexcel--><dependency><groupId>com.alibaba</groupId><artifactId>easyexcel</artifactId><version>2.1.1</version></dependency><!--xls--><dependency><groupId>org.apache.poi</groupId><artifactId>poi</artifactId><version>3.17</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>3.17</version></dependency><!--lombok--><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version> 1.18.16</version></dependency>
二、编写Excel表格实体类
这里@Data就是Lombok的注解，不用自己写getter、setter、tostring
@Datapublic class StudentExcel {//设置excel表头名称@ExcelProperty(value = "学号")private Integer sno;@ExcelProperty(value = "姓名")private String sname;@ExcelProperty(value = "性别")private Integer ssex;}
三、写操作
public class TestEasyExcel {public static void main(String[] args) {String filename = "D:\\student.xlsx";testWriteExcel(filename);}public static void testWriteExcel(String filename){//实现excel写的操作//调用easyexcel里面的方法实现写操作//write方法两个参数：第一个参数文件路径名称，第二个参数实体类classgetData()是要写的入的实体类ListEasyExcel.write(filename,StudentExcel.class).sheet("学生列表").doWrite(getData());}//创建方法返回list集合private static List<StudentExcel> getData() {List<StudentExcel> list = new ArrayList<>();String[] name={"tom","jack","tony","小明","小红"};for (int i = 0; i < 5; i++) {StudentExcel data = new StudentExcel();data.setSno(i);data.setSname(name[i]);data.setSsex(1);list.add(data);}return list;}}
四、读操作
1.编写监听器
public class ExcelListener extends AnalysisEventListener<StudentExcel> {//一行一行读取excel内容@Overridepublic void invoke(StudentExcel data, AnalysisContext analysisContext) {System.out.println("excel数据："+data);}//读取表头内容@Overridepublic void invokeHeadMap(Map<Integer, String> headMap, AnalysisContext context) {System.out.println("表头："+headMap);}//读取完成之后@Overridepublic void doAfterAllAnalysed(AnalysisContext analysisContext) {}}
2.读取数据
public static void main(String[] args) {String filename = "D:\\student.xlsx";testReadExcel(filename);}public static void testReadExcel(String filename){//实现excel读操作EasyExcel.read(filename, StudentExcel.class,new ExcelListener()).sheet().doRead();}
帮助到您请点赞关注收藏谢谢！！
