我正在使用java swing开发一个基于桌面的软件，需要以pdf和excel文件导出报告，并接受来自用户的路径。我有pdf和excel文件的导出报告，但现在我想接受来自用户的路径，用户必须为该文件命名。
try
{
String filename="sales111.xls" ;
HSSFWorkbook hwb=new HSSFWorkbook();
HSSFSheet sheet = hwb.createSheet("Sales Report in Excel");
HSSFRow rowhead= sheet.createRow((short)0);
rowhead.createCell((short) 0).setCellValue("Invoice Numberr");
rowhead.createCell((short) 1).setCellValue("date");
rowhead.createCell((short) 2).setCellValue("Customer Name");
rowhead.createCell((short) 3).setCellValue("customer Code");
rowhead.createCell((short) 4).setCellValue("Stock Item Name");
rowhead.createCell((short) 5).setCellValue("Product Quantity");
rowhead.createCell((short) 6).setCellValue("Product Rate");
rowhead.createCell((short) 7).setCellValue("Total Amount");
rowhead.createCell((short) 8).setCellValue("Tax Category");
rowhead.createCell((short) 9).setCellValue("Tax Amount");
rowhead.createCell((short) 10).setCellValue("Transport Charges");
rowhead.createCell((short) 11).setCellValue("Net Amount");
rowhead.createCell((short) 11).setCellValue("Credit Limit");
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost/BOA", "root", "root");
Statement st=con.createStatement();
ResultSet rs=st.executeQuery("Select * from SalesVoucher");
int i=1;
while(rs.next())
{
HSSFRow row= sheet.createRow((short)i);
row.createCell((short) 0).setCellValue(rs.getString("innum"));
row.createCell((short) 1).setCellValue(rs.getString("date"));
row.createCell((short) 2).setCellValue(rs.getString("scname"));
row.createCell((short) 3).setCellValue(rs.getString("sccode"));
row.createCell((short) 4).setCellValue(rs.getString("stname"));
row.createCell((short) 5).setCellValue(Integer.toString(rs.getInt("pquantity")));
row.createCell((short) 6).setCellValue(Double.toString(rs.getDouble("prate")));
row.createCell((short) 7).setCellValue(Double.toString(rs.getDouble("samount")));
row.createCell((short) 8).setCellValue(Double.toString(rs.getDouble("staxcat")));
row.createCell((short) 9).setCellValue(Double.toString(rs.getDouble("stamount")));
row.createCell((short) 10).setCellValue(Double.toString(rs.getDouble("strans")));
row.createCell((short) 11).setCellValue(Double.toString(rs.getDouble("stota")));
row.createCell((short) 11).setCellValue(Integer.toString(rs.getInt("scredlim")));
i++;
}
FileOutputStream fileOut = new FileOutputStream(filename);
hwb.write(fileOut);
fileOut.close();
System.out.println("Your Sales Report Excel file has been generated!");
String name1="";
FileSave(filename,name1);
}
catch ( Exception ex )
{
System.out.println(ex);
}
}
public void FileSave(final String title,final String name)
{
final JFileChooser chooser=new JFileChooser();
// chooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
chooser.setDialogTitle(title);
chooser.setCurrentDirectory(new File(System.getProperties().getProperty("user.dir")));
chooser.setFileFilter(new javax.swing.filechooser.FileFilter()
{
public boolean accept(final File f)
{
return f.isDirectory();
}
public String getDescription(){
return "Folder To Save In";
}
}
);
final int r=chooser.showSaveDialog(null);
File file;
if (r == JFileChooser.APPROVE_OPTION)
{
if (name != null)
{
file=new File(chooser.getSelectedFile().getPath() + File.separator + name);
}
else
{
// file=new File(filename);
file=new File(chooser.getSelectedFile().getPath());
}
}
}
这是我的代码，它只在当前目录中创建excel文件并保存文件，并且不接受用户的文件名。
任何人都可以建议我吗？
答案 0 :(得分：3)
您只需在FileSave中创建一个空文件。
您必须从方法中返回所选文件名，并使用调用中返回的文件名
FileOutputStream fileOut = new FileOutputStream(filename)
BWT java代码约定假设方法名称不是从大写字母
开始答案 1 :(得分：0)
你可以试试这个。
public void FileSave() throws IOException
{
JFileChooser chooser=new JFileChooser(".");
FileNameExtensionFilter filter = new FileNameExtensionFilter("Excel files","xls","excel");
chooser.addChoosableFileFilter(filter);
chooser.setFileFilter(filter);
chooser.setFileSelectionMode(chooser.FILES_AND_DIRECTORIES);
chooser.setDialogTitle("Save File");
chooser.setCurrentDirectory(new File(System.getProperties().getProperty("user.home")));
chooser.setFileFilter(new javax.swing.filechooser.FileFilter()
{
public boolean accept(final File f)
{
return f.isDirectory()|| file.getAbsolutePath().endsWith(".xls");
}
public String getDescription()
{
return "Excel files (*.xls)";
}
});
int returnVal1=chooser.showSaveDialog(this);
if (returnVal1 == JFileChooser.APPROVE_OPTION)
{
file1 = chooser.getSelectedFile();
if(!file1.exists())
{
FileOutputStream fileOut = new FileOutputStream(file1);
hwb.write(fileOut);
fileOut.close();
System.out.println("\n Your Excel file has been generated!");
JOptionPane.showMessageDialog(this,"File Created.");
}
else if(file1.exists())
{
int res=JOptionPane.showConfirmDialog(this,"File already exists.Do you wish to overwrite?");
if(res == JOptionPane.YES_OPTION)
{
FileOutputStream fileOut = new FileOutputStream(file1);
hwb.write(fileOut);
fileOut.close();
System.out.println("\n Your Excel file has been generated!");
JOptionPane.showMessageDialog(this,"File Created.");
}
else if(res == JOptionPane.NO_OPTION)
{
int returnVal2=chooser.showSaveDialog(this);
if (returnVal2 == JFileChooser.APPROVE_OPTION)
{
File file2 = chooser.getSelectedFile();
if(!file2.exists())
{
FileOutputStream fileOut = new FileOutputStream(file2);
hwb.write(fileOut);
fileOut.close();
System.out.println("\n Your Excel file has been generated!");
JOptionPane.showMessageDialog(this,"File Created.");
}
}
}
else if (res == JOptionPane.CANCEL_OPTION)
{
JOptionPane.showMessageDialog(this, "User cancelled operation.");
}
}
}
}