根据excel模板里设置指定的num0,num1,num2,num3.然后替换成想到的内容，生成新的excel文件

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import org.apache.poi.hssf.usermodel.HSSFCell;

import org.apache.poi.hssf.usermodel.HSSFRow;

import org.apache.poi.hssf.usermodel.HSSFSheet;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import org.apache.poi.poifs.filesystem.POIFSFileSystem;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

import java.util.Set;

/**

* Writer: fuanyu

* Date : 14-12-26

* Time : 上午9:43

*/

@SuppressWarnings("unchecked")

public class TestExcel {

/**

* 替换Excel模板文件内容

* @param item 文档数据

* @param sourceFilePath Excel模板文件路径

* @param targetFilePath Excel生成文件路径

*/

public static boolean replaceModel(Map item, String sourceFilePath, String targetFilePath) {

boolean bool = true;

try {

POIFSFileSystem fs =new POIFSFileSystem(new FileInputStream(sourceFilePath));

HSSFWorkbook wb = new HSSFWorkbook(fs);

HSSFSheet sheet = wb.getSheetAt(0);

Iterator rows = sheet.rowIterator();

while(rows.hasNext()){

HSSFRow row = (HSSFRow) rows.next();

if(row!=null)

{

int num = row.getLastCellNum();

for(int i=0;i

{

HSSFCell cell= row.getCell(i);

if(cell!=null)

{

cell.setCellType(HSSFCell.CELL_TYPE_STRING);

}

if(cell==null || cell.getStringCellValue()==null)

{

continue;

}

String value= cell.getStringCellValue();

if(!"".equals(value))

{

Set keySet = item.keySet();

Iterator it = keySet.iterator();

while (it.hasNext()) {

String text = it.next();

if(value.equalsIgnoreCase(text))

{

cell.setCellValue((String)item.get(text));

break;

}

}

}else{

cell.setCellValue("");

}

}

}

}

// 输出文件

FileOutputStream fileOut = new FileOutputStream(targetFilePath);

wb.write(fileOut);

fileOut.close();

} catch (Exception e) {

bool = false;

e.printStackTrace();

}

return bool;

}

public static void main(String[] args) {

Map item = new HashMap();

item.put("num0","000");

item.put("num1","1");

item.put("num2","2");

item.put("num3","3");

item.put("num4","4");

item.put("num5","5");

item.put("num6","6");

//d:\\template.xls为Excel模板文件，d:\\test.xls为程序根据Excel模板文件生成的新文件

replaceModel(item, "d:\\template.xls", "d:\\test.xls");

}

}

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原文：http://fuanyu.iteye.com/blog/2170263