第二章 UnityExcel 快速上手

假设我们定义一个POJO如下

package com.unity.excel.demo;

import java.util.Date;

import com.unity.excel.annotations.UColumn;
import com.unity.excel.annotations.UFormatter;
import com.unity.excel.annotations.UTable;

@UTable()
public class DemoObject {

	@UColumn(Index = 1)
	private String name;

	@UColumn(Index = 2)
	private int age;

	@UColumn(Index = 3)
	private double width;

	@UColumn(Index = 4)
	@UFormatter(FormatPartten = "yyyy-MM-dd")
	private Date birthday;

	public DemoObject() {

	}

	public DemoObject(String name) {
		super();
		this.name = name;
	}
	public DemoObject(String name, int age) {
		super();
		this.name = name;
		this.age = age;
	}
	public DemoObject(String name, int age, double width) {
		super();
		this.name = name;
		this.age = age;
		this.width = width;
	}

	public DemoObject(String name, int age, double width, Date birthday) {
		super();
		this.name = name;
		this.age = age;
		this.width = width;
		this.birthday = birthday;
	}

	public int getAge() {
		return age;
	}

	public Date getBirthday() {
		return birthday;
	}

	public String getName() {
		return name;
	}

	public double getWidth() {
		return width;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public void setBirthday(Date birthday) {
		this.birthday = birthday;
	}

	public void setName(String name) {
		this.name = name;
	}

	public void setWidth(double width) {
		this.width = width;
	}

	@Override
	public String toString() {
		return "DemoObject [name=" + name + ", age=" + age + ", width=" + width
				+ ", birthday=" + birthday + "]";
	}

}

 上面代码中，我们看到了UTable UColumn 这两个注解，很明显这是支撑我们导出使用的注解。

 回顾第一章的代码

private static void ExportTest() {
		List<DemoObject> temp=new ArrayList<DemoObject>();
		//---------------------------------姓名 ,年龄,腰围,生日
		temp.add(new DemoObject("小妹",1,33.500,new Date()));
		temp.add(new DemoObject("山炮",2,23.5,new Date()));
		Unity u=new Unity97();
		try {
			u.exportUTable(temp, new FileOutputStream("src/temp.xls")).close();
		} catch (IOException e) {
			e.printStackTrace();
		}
}

 如此就完成了导出，那么导出的数据格式是怎么控制的呢？

来介绍一下 UTable 和 UColumn这两个注解

@UTable(EnableSequence=true,SequenceHead="序号",TitleRowsCount=1)

以上属性均是默认值，等效于@UTable()

EnableSequence 开启序号列 值 true | false 默认 true

SequenceHead 序号列标题 

TitleRowsCount 标题行数量 //这个是读取时使用

@UColumn(Index=1)

Index代表导出时 字段所在列的索引位置，从1开始 因为 第0列是序号列

Head代表导出时标题列的文字内容 ,默认为字段定义名字

需要第三方类库清单

 unity-excel-1.0.1.jar见附件