折腾了好久，终于结束了，算是一个模板导入的通用类呢吧；上代码:
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpServletResponse;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFCellStyle;
import org.apache.poi.xssf.usermodel.XSSFDataFormat;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.thinkgem.jeesite.common.utils.Encodes;
import com.thinkgem.jeesite.common.utils.StringUtils;
/**
* 导出EXCEL账套(使用模板导出)
* @author Sunck
*
*/
public class Exxx {
private static Logger log = LoggerFactory.getLogger(ExportExcel.class);
private XSSFWorkbook workbook;
private XSSFSheet sheet;
private XSSFRow row;//行对象
private int rowNum;//待插入行号
private int rownum;//当前行号
private FileOutputStream fos;
public Map<String, String> map = new HashMap<String, String>();//用于模板固定字符替换
public Exxx(String url, int rowNum) {
File file = new File(url);
String realPath = ("H://uploadfile");
String newFileName = System.currentTimeMillis() + ".xlsx";
// 判断路径是否存在
File dir = new File(realPath);
if (!dir.exists()) {
dir.mkdirs();
}
// 写入到新的excel
File newFile = new File(realPath, newFileName);
try {
newFile.createNewFile();
// 写数据
fileChannelCopy(file, newFile);
InputStream io = new FileInputStream(newFile);
this.workbook = new XSSFWorkbook(io);// 创建workbook，
this.sheet = workbook.getSheetAt(0);//获取工作表(1)
if(sheet!=null) {
this.fos = new FileOutputStream(newFile);
}else {
log.debug("Write error: ["+row.getRowNum()+"] 数据为空");
}
//检测是否有数据，因为是走的模板所以不需要
row = sheet.getRow(5);
if (row == null) {
row = sheet.createRow(5);
}
XSSFCell cell = row.getCell(1);
if (cell == null) {
cell = row.createCell(1);
}
} catch (Exception e) {
e.printStackTrace();
}
this.rowNum = rowNum;
}
/**
*
* @param m当前插入行数
* @return Row对象
*/
public void addRow(int m) {
sheet.shiftRows((int)m+this.rowNum, sheet.getLastRowNum(), 1);
row = sheet.createRow((int)m+this.rowNum);
}
/**
* 加入单元格(文字)
* @param value 字面的值
* @param num 当前遍历位置
* @param isClass 是否加入背景色
*/
public void addCell(String value ,int num,boolean isClass) {
try {
Float.parseFloat(value);
addCell("",num,isClass,Float.parseFloat(value));
} catch (Exception e) {
addCell(value,num,isClass,(float) 0);
}
}
/** 加入单元格(文字)
* @param value 字面的值
* @param num 当前遍历位置
* @param isClass 是否加入背景色
*/
public void addCell(Float value ,int num,boolean isClass) {
addCell("",num,isClass,value);
}
public void addCell(String value ,int num,boolean isClass,Float vvalue){
XSSFCell cell = this.row.createCell(num+1);
XSSFCellStyle borderStyle = this.workbook.createCellStyle();
if(StringUtils.isNotBlank(value)) {
cell.setCellValue(value);
}else {
cell.setCellValue(vvalue);
cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
XSSFDataFormat format = workbook.createDataFormat();
borderStyle.setDataFormat(format.getFormat("#,##0.000"));
}
// 创建字体对象
Font ztFont = workbook.createFont();
ztFont.setFontHeightInPoints((short)9); // 将字体大小设置为9px
ztFont.setFontName("宋体"); // 将“新宋体”字体应用到当前单元格上
borderStyle.setFont(ztFont); // 将字体应用到样式上面
if(isClass) {
//XSSFCell borderCell = this.row.createCell(num+1);
borderStyle.setFillForegroundColor(IndexedColors.PALE_BLUE.getIndex());// 设置背景色
borderStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
borderStyle.setBorderBottom(CellStyle.BORDER_THIN);
borderStyle.setBorderTop(CellStyle.BORDER_THIN);
borderStyle.setBorderLeft(CellStyle.BORDER_THIN);
borderStyle.setBorderRight(CellStyle.BORDER_THIN);
}
cell.setCellStyle(borderStyle);
}
/**
* 复制文件
*
* @param s源文件
*
* @param t复制到的新文件
*/
public static void fileChannelCopy(File s, File t) {
try {
InputStream in = null;
OutputStream out = null;
try {
in = new BufferedInputStream(new FileInputStream(s), 1024);
out = new BufferedOutputStream(new FileOutputStream(t), 1024);
byte[] buffer = new byte[1024];
int len;
while ((len = in.read(buffer)) != -1) {
out.write(buffer, 0, len);
}
} finally {
if (null != in) {
in.close();
}
if (null != out) {
out.close();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 文本替换
* @param map(键值对)
* @param sheet
*/
public void replaceExcelDate () {
int rowNum = sheet.getLastRowNum();
for(int i = 0;i <= rowNum; i++){
XSSFRow row = sheet.getRow(i);
if(row == null) continue;
for(int j = 0;j < row.getLastCellNum();j++){
XSSFCell cell = row.getCell(j);
if(cell == null) continue;
if(cell.getCellType()== HSSFCell.CELL_TYPE_STRING) {
String key = cell.getStringCellValue();
if(StringUtils.isNoneBlank(key)){
if(map.containsKey(key)){
cell.setCellValue(map.get(key));
}
}
}
}
}
}
/**
* 输出数据流
* @param os 输出数据流
*/
public Exxx write(OutputStream os) throws IOException{
workbook.write(os);
os.flush();
os.close();
return this;
}
/**
* 输出到客户端
* @param fileName 输出文件名
*/
public Exxx write(HttpServletResponse response, String fileName) throws IOException{
response.reset();
response.setContentType("application/octet-stream; charset=utf-8");
response.setHeader("Content-Disposition", "attachment; filename="+Encodes.urlEncode(fileName));
write(response.getOutputStream());
return this;
}
/**
* 输出到文件
* @param fileName 输出文件名
*/
public Exxx writeFile() throws FileNotFoundException, IOException{
this.write(fos);
fos.flush();
fos.close();
return this;
}
/* 测试方法
public static void main(String[] args) {
Exxx ee = new Exxx("H:\\存货总账模板.xlsx", 5);
//替换模板的文本
ee.map.put("ttime", "2016-06-07 12:00:00");
ee.map.put("name", "测试");
ee.replaceExcelDate();
// 定义一个list集合假数据
List<Map<String, Object>> lst = new ArrayList();
Map<String, Object> map1 = new HashMap<String, Object>();
for (int i = 0; i < 10; i++) {
map1.put("id" + i, i);
lst.add(map1);
}
for (int m = 0; m < lst.size(); m++) {
Map<String, Object> map = lst.get(m);
ee.addRow(m);
for (int i = 0; i < 17; i++) {
String value = map.get("id" + m) + "";
if (value.equals("null")) {
value = "0";
}
ee.addCell(value, i, true);
}
}
try {
ee.writeFile();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}*/
}
图片传不上来，有点尴尬，作为技术博客备用，有问题大家请留言