Java 从Jtable中导出数据到本地指定路径Excel保存
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.hssf.util.HSSFColor;
import javax.swing.*;
import javax.swing.filechooser.FileFilter;
import javax.swing.table.TableModel;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
public class ExportExcel {
JTable table;
FileOutputStream fos;
//传参数 Jtable的一个对象实例 另一个是保存的文件路径
public ExportExcel(JTable table,String savepath) {
this.table = table;
File file = new File(savepath);
try {
this.fos = new FileOutputStream(file);
} catch (FileNotFoundException ex) {
ex.printStackTrace();
}
}
public void export() {
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet hs = wb.createSheet();
TableModel tm = table.getModel();
int row = tm.getRowCount();
int cloumn = tm.getColumnCount();
// System.out.println("row " + row + " column " + cloumn);
HSSFCellStyle style = wb.createCellStyle();
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
style.setFillForegroundColor(HSSFColor.LIGHT_GREEN.index);
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
HSSFFont font = wb.createFont();
font.setFontHeightInPoints((short) 11);
style.setFont(font);
HSSFCellStyle style1 = wb.createCellStyle();
style1.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style1.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style1.setBorderRight(HSSFCellStyle.BORDER_THIN);
style1.setBorderTop(HSSFCellStyle.BORDER_THIN);
style1.setFillForegroundColor(HSSFColor.ORANGE.index);
style1.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
HSSFFont font1 = wb.createFont();
font1.setFontHeightInPoints((short) 15);
font1.setBoldweight((short) 700);
style1.setFont(font);
for (int i = 0; i < row + 1; i++) {
HSSFRow hr = hs.createRow(i);
for (int j = 0; j < cloumn; j++) {
if (i == 0) {
String value = tm.getColumnName(j);
// System.out.println("value " + value);
int len = value.length();
hs.setColumnWidth((short) j, (short) (len * 400));
HSSFRichTextString srts = new HSSFRichTextString(value);
HSSFCell hc = hr.createCell((short) j);
//hc.setEncoding((short) 1);
hc.setCellStyle(style1);
hc.setCellValue(srts);
} else {
//System.out.println("vlue " + tm.getValueAt(i - 1, j));
if (tm.getValueAt(i - 1, j) != null) {
String value = tm.getValueAt(i - 1, j).toString();
HSSFRichTextString srts = new HSSFRichTextString(value);
HSSFCell hc = hr.createCell((short) j);
//hc.setEncoding((short) 1);
hc.setCellStyle(style);
if (value.equals("") || value == null) {
hc.setCellValue(new HSSFRichTextString(""));
} else {
hc.setCellValue(srts);
}
}
}
}
}
try {
wb.write(fos);
fos.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
//先实例化这个类 传参数 得到一个对象
ExportExcel exportExcel = new ExportExcel(table,"E:\\a.xls");
//用这个对象调用这个类的export()方法就行
exportExcel.export();