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| package cn.vgbhfive.poidemo.utils;
import org.apache.poi.hssf.usermodel.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
@Service
public class ExcelUtils {
private static final Logger logger = LoggerFactory.getLogger(ExcelUtils.class);
private static final short borderRpx = 1;
public static HSSFWorkbook expExcel(List<String> headers, List<List<String>> data) {
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = workbook.createSheet("sheet1");
HSSFRow row = sheet.createRow(0);
HSSFCell cell = null;
HSSFCellStyle style = workbook.createCellStyle();
setBorderStyle(style, borderRpx);
style.setFont(setFontStyle(workbook, "黑体", (short) 14));
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
sheet.createFreezePane(0, 1, 0, 1);
for (int i = 0; i < headers.size(); i++) {
cell = row.createCell(i);
cell.setCellValue(headers.get(i));
cell.setCellStyle(style);
}
HSSFCellStyle style1 = workbook.createCellStyle();
setBorderStyle(style1, borderRpx);
style1.setFont(setFontStyle(workbook, "宋体", (short) 12));
style1.setAlignment(HSSFCellStyle.ALIGN_CENTER);
for (int i = 0; i < data.size(); i++) {
row = sheet.createRow(i+1);
List<String> param = data.get(i);
for (int j = 0; j < param.size(); j++) {
cell = row.createCell(j);
cell.setCellValue(param.get(j));
cell.setCellStyle(style1);
}
}
for (int i = 0; i < headers.size(); i++) {
sheet.autoSizeColumn(i);
}
return workbook;
}
public static void outFile(HSSFWorkbook workbook, String path, HttpServletResponse response) {
OutputStream os=null;
File file = null;
try {
file = new File(path);
String filename = file.getName();
os = new FileOutputStream(file);
response.addHeader("Content-Disposition", "attachment;filename="+ URLEncoder.encode(filename, "UTF-8"));
os= new BufferedOutputStream(response.getOutputStream());
response.setContentType("application/vnd.ms-excel;charset=utf-8");
workbook.write(os);
} catch (FileNotFoundException e1) {
e1.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
os.flush();
os.close();
System.gc();
System.out.println(file.delete());
} catch (IOException e) {
e.printStackTrace();
}
}
public static HSSFFont setFontStyle(HSSFWorkbook workbook, String name, short height) {
HSSFFont font = workbook.createFont();
font.setFontHeightInPoints(height);
font.setFontName(name);
return font;
}
public static void setBorderStyle(HSSFCellStyle cellStyle, short border) {
cellStyle.setBorderBottom(border);
cellStyle.setBorderLeft(border);
cellStyle.setBorderTop(border);
cellStyle.setBorderRight(border);
}
}
|
