点击”导出“程序执行弹出windows对话框,提示“打开/保存/取消”,点击”打开/保存“程序正常,点击取消,后台报错如下,而且改线程一直在跑,再次点击导出无法弹出对话框2006-08-23 06:04:22 - Ctx( /CernetFee ): IOException in: R( /CernetFee + /control + /system_management/DoPrintEnvelope) Not an ISO 8859_1 character:?
代码如下:
try{
HashMap list = systemManager.envelopePrintList(user, envelopeScope);
System.out.println("SystemManagerWebImp****************envelopePrintList done");
File file = genExcel.genExcelFile(list); response.setContentType("application/vnd.ms-excel;charset=GBK");
response.setHeader("Content-Disposition", "filename="+file.getName());
response.setContentLength((int)file.length()); OutputStream out = response.getOutputStream();
BufferedInputStream in = new BufferedInputStream(new FileInputStream(file)); int length = (int)file.length();
if(length != 0)
{
byte[] buf = new byte[4096]; while ((in != null) && ((length = in.read(buf)) != -1))
{
out.write(buf, 0, length);
}
} in.close();
out.flush();
out.close(); request.setAttribute(WebKeys.STOP_CONTINUE_DISPATCH,"true"); }catch(SQLException ex){
HashMap errorMessges = (HashMap)request.getSession().getAttribute(WebKeys.ErrorMessagesKey);
errorMessges.put(WebKeys.GeneralFailureException,"数据库错误");
ex.printStackTrace();
}catch(Exception ex){
errorMsg=ex.getMessage();
}
代码如下:
try{
HashMap list = systemManager.envelopePrintList(user, envelopeScope);
System.out.println("SystemManagerWebImp****************envelopePrintList done");
File file = genExcel.genExcelFile(list); response.setContentType("application/vnd.ms-excel;charset=GBK");
response.setHeader("Content-Disposition", "filename="+file.getName());
response.setContentLength((int)file.length()); OutputStream out = response.getOutputStream();
BufferedInputStream in = new BufferedInputStream(new FileInputStream(file)); int length = (int)file.length();
if(length != 0)
{
byte[] buf = new byte[4096]; while ((in != null) && ((length = in.read(buf)) != -1))
{
out.write(buf, 0, length);
}
} in.close();
out.flush();
out.close(); request.setAttribute(WebKeys.STOP_CONTINUE_DISPATCH,"true"); }catch(SQLException ex){
HashMap errorMessges = (HashMap)request.getSession().getAttribute(WebKeys.ErrorMessagesKey);
errorMessges.put(WebKeys.GeneralFailureException,"数据库错误");
ex.printStackTrace();
}catch(Exception ex){
errorMsg=ex.getMessage();
}
import java.util.*;
import jxl.*;
import jxl.write.*; public class myExcel{
Workbook workbook;
Sheet sheet;
/**
*<br/>方法说明:写入文件操作
*<br/>输入参数:
*<br/>返回类型:
*/
public void write(){
try{
//创建一个可写入的excel文件对象
WritableWorkbook workbook = Workbook.createWorkbook(new File("myfile.xls"));
//使用第一张工作表,将其命名为“午餐记录”
WritableSheet sheet = workbook.createSheet("午餐记录", 0);
//表头
Label label0 = new Label(0, 0, "时间");
sheet.addCell(label0);
Label label1 = new Label(1, 0, "姓名");
sheet.addCell(label1);
Label label2 = new Label(2, 0, "午餐标准");
sheet.addCell(label2);
Label label3 = new Label(3, 0, "实际费用");
sheet.addCell(label3);
//格式化日期
jxl.write.DateFormat df = new jxl.write.DateFormat("yyyy-dd-MM hh:mm:ss");
jxl.write.WritableCellFormat wcfDF = new jxl.write.WritableCellFormat(df);
jxl.write.DateTime labelDTF = new jxl.write.DateTime(0, 1, new java.util.Date(), wcfDF);
sheet.addCell(labelDTF);
//普通字符
Label labelCFC = new Label(1, 1, "riverwind");
sheet.addCell(labelCFC);
//格式化数字
jxl.write.NumberFormat nf = new jxl.write.NumberFormat("#.##");
WritableCellFormat wcfN = new WritableCellFormat(nf);
jxl.write.Number labelNF = new jxl.write.Number(2, 1, 13.1415926, wcfN);
sheet.addCell(labelNF);
jxl.write.Number labelNNF = new jxl.write.Number(3, 1, 10.50001, wcfN);
sheet.addCell(labelNNF);
//关闭对象,释放资源
workbook.write();
workbook.close(); }catch(Exception e){
System.out.println(e);
}
}
/**
*<br/>方法说明:读取excel文件一行数据
*<br/>输入参数:int row指定的行数
*<br/>返回类型:String〔〕结果数组
*/
public String[] readLine(int row){
try{
//获取数据表列数
int colnum = sheet.getColumns();
String[] rest = new String[colnum];
for(int i = 0; i < colnum; i++){
String sTemp = read(i,row);
if(sTemp!=null)
rest[i] = sTemp;
}
return rest;
}catch(Exception e){
System.out.println("readLine err:"+e);
workbook.close();
return null;
}
}
/**
*<br/>方法说明:读取excel的指定单元数据
*<br/>输入参数:
*<br/>返回类型:
*/
public String read(int col, int row){
try{
//获得单元数据
Cell a2 = sheet.getCell(col,row);
String rest = a2.getContents();
return rest;
}catch(Exception e){
System.out.println("read err:"+e);
workbook.close();
return null;
}
}
/**
*<br/>方法说明:主方法,演示程序用
*<br/>输入参数:
*<br/>返回类型:
*/
public static void main(String[] arges){
try{
myExcel me = new myExcel();
//生成一个可读取的excel文件对象
me.workbook = Workbook.getWorkbook(new File("myfile.xls"));
//使用第一个工作表
me.sheet = me.workbook.getSheet(0);
//读一行记录,并显示出来
String[] ssTemp = me.readLine(1);
for(int i=0;i<ssTemp.length;i++)
System.out.println(ssTemp[i]);
//写入数据
me.write();
me.workbook.close();
}catch(Exception e){
System.out.println(e);
}
}
}