excel与java报表开发

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.sql.SQLException;

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;

public class ExcelFile {

/**

* 写Excel操作

* @param fileName

* 文件名，文件要写入到的盘符和文件名，但不需要后缀名

* @param fieldName

* 表头名

* @param res

* 数据对象,java.sql.ResultSet

*/

public static void writeExcel(String fileName,String [] fieldName,java.sql.ResultSet res)

{

FileOutputStream fos =null;

try {

fos = new FileOutputStream(fileName+".xls");

HSSFWorkbook wb = new HSSFWorkbook();

HSSFSheet s = wb.createSheet();

createTag(fieldName,s);//写表格的头部

createValue(res,s);//获取数据集，然后获得数据，写文件

wb.write(fos);

fos.close();

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

finally

{

if(fos!=null)

{

try {

fos.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

}

/**

* 创建表格表头

* @param tags

* @param s

*/

private static void createTag(String [] tags,HSSFSheet s)

{

HSSFRow row = s.createRow(0);

HSSFCell cell = null;

for(int i=0;i<tags.length;i++)

{

cell = row.createCell(i);

cell.setCellValue(tags[i]);

}

}

/**

* 设置表格内容

* @param res

* @param s

*/

private static void createValue(java.sql.ResultSet res,HSSFSheet s)

{

try {

int flag = 1;

int count = res.getMetaData().getColumnCount();

HSSFRow row = null;

HSSFCell cell = null;

while(res.next())

{

row = s.createRow(flag);

for(int i=1;i<=count;i++)

{

cell = row.createCell(i-1);

Object obj = res.getObject(i);

cell.setCellValue(obj+"");

}

flag++;

}

} catch (SQLException e) {

e.printStackTrace();

}

}

}

test

import com.jn.util.file.office.ExcelFile;

public class ExcelFileText {

public static void main(String [] args)

{

String sql = "select title_id,title,pub_id from titles";

DBAccess dba = new DBAccess();

ExcelFile.writeExcel("D://text",new String[]{"文章编号","文章主题","Pub_ID"},dba.query(sql));

dba.closeConn();

}

}