(JAVA) 產出EXECL的範例

//那些有用到要測試才知道，忘記了
import com.cht.sys.extended.ExtendedDispatchAction;
import com.cht.sys.util.MultiPartReader;
import java.io.File;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.Vector;
import javax.servlet.http.HttpSession;
import jxl.Sheet;
import jxl.Workbook;
import jxl.format.Border;
import jxl.format.BorderLineStyle;
import jxl.format.Colour;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableWorkbook;

  //開始輸出excel
            response.reset();
            response.setContentType("application/vnd.ms-excel;charset=UTF-8");//格式
            String filename = sf.format(new Date()).toString() + "_Export.xls";
            response.setHeader("Content-Disposition", "attachment;filename=" + filename);
            OutputStream os = response.getOutputStream();

(JAVA)判斷是否為數字

public static boolean isNumeric(String str){ 
try { 
Integer.parseInt(str); 
return true; 
} catch (NumberFormatException e) { 
// TODO Auto-generated catch block 
return false; 
} 
}

(JAVA)要將檔案壓縮且加密的方式

首先下載下列兩個jar

1.winzipaes.jar(http://code.google.com/p/winzipaes/) 這邊要抓20110222的版本，新的版本用法不同

2.bcprov-jdk15-145.jar(http://www.bouncycastle.org/latest_releases.html)