EASYEXCEL（一）

1.读取excel

读监听器

@Slf4j
public class StudentReadListener extends AnalysisEventListener<Student> {// 每读一样，会调用该invoke方法一次@Overridepublic void invoke(Student data, AnalysisContext context) {System.out.println("data = " + data);log.info(data + "保存成功");}// 全部读完之后，会调用该方法@Overridepublic void doAfterAllAnalysed(AnalysisContext context) {// TODO......}
}

映射实体类

@Data
@AllArgsConstructor
@NoArgsConstructor
@ColumnWidth(20)
@ToString
public class Student {/*** id*/@ExcelProperty(value = "编号",index = 0)//@ExcelIgnoreprivate String id;/*** 学生姓名*/@ExcelProperty(value = "学生姓名", index = 1)//@ColumnWidth(30)private String name;/*** 学生性别*/@ExcelProperty(value = "学生性别", index = 2)private String gender;/*** 学生出生日期*/@ExcelProperty(value = "学生出生日期", index = 3)//@ColumnWidth(20)private Date birthday;

 读取

public class StudentReadDemo {public static void main(String[] args) throws FileNotFoundException {// 读取文件，读取完之后会自动关闭/*pathName        文件路径；"C:\\Users\\wjg\\Desktop\\学员信息.xlsx"head            每行数据对应的实体；Student.classreadListener    读监听器，每读一样就会调用一次该监听器的invoke方法sheet方法参数： 工作表的顺序号（从0开始）或者工作表的名字，不传默认为0*/// 封装工作簿对象ExcelReaderBuilder workBook = EasyExcel.read("C:\\Users\\wjg\\Desktop\\学员信息.xlsx", Student.class, new StudentReadListener());// 封装工作表ExcelReaderSheetBuilder sheet1 = workBook.sheet();// 读取sheet1.doRead();}

2.写入excel

public class StudentWriteDemo {public static void main(String[] args) {List<Student> students = initData();/*String pathName 写入文件的路径Class head      写入文件的对象类型默认写入到07的xlsx中，如果想要写入xls，可以指定类型（待验证）*/ExcelWriterBuilder workBook = EasyExcel.write("C:\\Users\\wjg\\Desktop\\学员信息.xlsx", Student.class);// sheet方法参数： 工作表的顺序号（从0开始）或者工作表的名字workBook.sheet().doWrite(students);}private static List<Student> initData() {ArrayList<Student> students = new ArrayList<Student>();Student data = new Student();for (int i = 0; i < 10; i++) {data.setName("学号0" + i);data.setBirthday(new Date());data.setGender("男");data.setId(String.valueOf(i));students.add(data);}return students;}
}