excelutil导出list嵌套list数据类型数据
时间: 2024-09-23 12:05:27 浏览: 50
ExcelUtil是一种用于操作Excel的工具库,它同样可以帮助你将包含复杂嵌套数据类型的List(比如List嵌套List)导出到Excel文件。以下是基本的操作步骤:
1. 添加依赖:首先,你需要在你的项目中引入ExcelUtil的依赖,例如使用Maven:
```xml
<dependency>
<groupId>com.github.xls4j</groupId>
<artifactId>xls4j</artifactId>
<version>最新版本号</version>
</dependency>
```
2. 定义数据结构:定义你的数据类,例如学生的课程列表:
```java
public class Student {
private String name;
private List<Course> courses;
// getters and setters...
}
public class Course {
private String courseName;
// 其他字段...
}
```
3. 创建Excel Writer:使用ExcelUtil,你可以遍历嵌套的List并将它们写入Excel文件:
```java
List<Student> students = ... // 学生列表数据
try (OutputStream outputStream = new FileOutputStream("students.xlsx")) {
Workbook workbook = Workbook.createWorkbook(outputStream);
Sheet sheet = workbook.getSheetAt(0); // 新建工作表
int rowIndex = 0;
for (Student student : students) {
Row row = sheet.getRow(rowIndex++);
row.createCell(0).setCellValue(student.getName()); // 填充学生姓名
for (int i = 0; i < student.getCourses().size(); i++) {
Course course = student.getCourses().get(i);
row.createCell(1 + i).setCellValue(course.getCourseName()); // 填充课程名称
}
}
workbook.write();
workbook.close();
} catch (IOException e) {
e.printStackTrace();
}
```
这里假设每一行对应一个学生,每个学生的课程放在新的一列。如果你需要更复杂的数据布局,可以继续调整row和cell的创建。
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