JAVA基于poi实现操作Excel

一.源码

1. 码云地址： http://git.oschina.net/Crab2Died/Excel4J

2. github地址： https://github.com/Crab2died/Excel4J

二.快速实现

1.对象模型(/src/test/java/moudles/Student.java) 基于ExcelField注解

// 学号
@ExcelField(title = "学号", order = 1)
private String id;

// 姓名
@ExcelField(title = "姓名", order = 2)
private String name;

// 班级
@ExcelField(title = "班级", order = 3)
private String classes;

2.Excel转对象模型(/src/test/java/base/Excel2Moudle.java)

2-1. Excel文件对象（截图）

2-2. 转换函数（Excel内容转对象模型）

@Test
public void excel2Object(){
String path = "D:\\IdeaSpace\\Excel4J\\src\\test\\java\\resource\\student.xlsx";
List<Object> students = ExcelUtil.getInstance().readExcel2ObjsByClasspath(path, Student.class);
for (Object obj : students){
Student stu = (Student) obj;
System.out.println(stu.getName() + " -- " + stu.getClasses());
}

students  = ExcelUtil.getInstance().readExcel2ObjsByClasspath(path, Student.class, 0, 2);
for (Object obj : students){
Student stu = (Student) obj;
System.out.println(stu.getName() + " -- " + stu.getClasses());
}
}

3. 对象导出Excel(/src/test/java/base/Moudle2Excel.java)

3-1. Excel模板（截图）

3-2. 导出函数（对象写入Excel）

@Test
public void object2Excel(){
String tempPath = "D:\\IdeaSpace\\Excel4J\\src\\test\\java\\resource\\template.xlsx";
List<Student> list = new ArrayList<>();
list.add(new Student("1010001", "盖伦", "六年级三班"));
list.add(new Student("1010002", "古尔丹", "一年级三班"));
list.add(new Student("1010003", "蒙多", "六年级一班"));
list.add(new Student("1010004", "萝卜特", "三年级二班"));
Map<String, String> datas = new HashMap<>();
datas.put("title", "战争学院花名册");
datas.put("info", "学校统一花名册");
ExcelUtil.getInstance().exportObj2ExcelByTemplate(datas, tempPath, "D:\\2.xlsx", list, Student.class, false, true);
}

3-3. 导出效果图

三.其他