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<!-- https://mvnrepository.com/artifact/org.apache.poi/poi excle 文件 -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.15</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.14</version>
</dependency>
2.
import java.io.FileOutputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
public class test {
/**
* @功能:手工构建一个简单格式的Excel
*/
public static void main(String[] args) {
//excel的头
String[] head = {"第一列","第二列","第三列","第四列","第五列"};
//要存储的数据
ArrayList<ArrayList<Object>> data = new ArrayList<ArrayList<Object>>();
for(int i=0;i<10;i++){
ArrayList<Object> arrayList = new ArrayList();
arrayList.add(1);
arrayList.add("你好呀");
arrayList.add(1.5);
arrayList.add(new Date());
arrayList.add(1100);
data.add(arrayList);
}
//要存储的路径
String path = "D:\\游戏\\sss.xls";
//创建第一个sheet
HSSFWorkbook wb1 = createExcel(head,data, "用户表一");
//创建第二个sheet
wb1 =addSheet(head,data, wb1,"用户表二");
try {
FileOutputStream fout = new FileOutputStream(path);
wb1.write(fout);
fout.close();
} catch (Exception e) {
e.printStackTrace();
}
}
//创建第一个sheet
public static HSSFWorkbook createExcel(String[] heads, ArrayList<ArrayList<Object>> data, String sheetName){
// 创建一个webbook,对应一个Excel文件
HSSFWorkbook wb = new HSSFWorkbook();
return addSheet(heads,data ,wb,sheetName);
}
//创建第二个sheet
public static HSSFWorkbook addSheet(String[] heads, ArrayList<ArrayList<Object>> data, HSSFWorkbook wb,String sheetName){
HSSFSheet sheet = wb.createSheet(sheetName);
//在sheet中添加表头第0行,注意老版本poi对Excel的行数列数有限制short
HSSFRow row = sheet.createRow((int) 0);
//创建单元格,并设置值表头 设置表头居中
HSSFCellStyle style = wb.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 创建一个居中格式
HSSFCell cell;
for(int i=0;i<heads.length;i++){
cell = row.createCell((short)i);
cell.setCellValue(heads[i]);
cell.setCellStyle(style);
}
for (int i = 0; i < data.size(); i++)
{
row = sheet.createRow((int) i + 1);
for(int j =0;j<(data.get(i)).size();j++){
if(data.get(i).get(j) instanceof String){
row.createCell((short)j).setCellValue(String.valueOf(data.get(i).get(j)));
}
if(data.get(i).get(j) instanceof Double){
row.createCell((short)j).setCellValue((Double) data.get(i).get(j));
}
if(data.get(i).get(j) instanceof Integer){
row.createCell((short)j).setCellValue((Integer)data.get(i).get(j));
}
if(data.get(i).get(j) instanceof Date){
row.createCell((short)j).setCellValue( new SimpleDateFormat("yyyy年mm月dd日").format(data.get(i).get(j)));
}
}
}
return wb;
}
}