纯java代码文件上传

package aaa;

import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Vector;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.border.LineBorder;

public class FileUpload implements ActionListener {
String filesavepath="";
String filename="";

JFrame jframe=new JFrame("文件上传");
JLabel jlabel=new JLabel("文件上传:");
JTextField jtext=new JTextField();
JButton jbutton=new JButton("选择文件");
JButton upload=new JButton("上传");

String columnNames[]={"A","B","C","D","E"};
Vector<String> columnnameV=new Vector<String>();

JMenuBar jmenubar=new JMenuBar();
JMenu jMenu1=new JMenu("menu1");
JMenu jMenu2=new JMenu("menu2");

JMenu jMenu11=new JMenu("menu11");

JMenuItem jemitem111=new JMenuItem("item111");

public FileUpload(){
jframe.setBounds(300, 200, 800, 600);
jlabel.setBounds(50, 40, 80, 20);
jtext.setBounds(120, 40, 300, 20);
jbutton.setBounds(440, 40,80, 20);
upload.setBounds(540, 40, 80, 20);
jmenubar.setBounds(0, 0, 800, 30);

for(int i=0;i<columnNames.length;i++){
columnnameV.add(columnNames[i]);//获得表头
}
Vector<Object> tableValueV = new Vector<Object>();
for(int row = 1;row<21;row++) //获得数据
{
Vector<Object> rowV = new Vector<Object>();
for(int column = 0;column<columnNames.length;column++)
{
rowV.add(columnNames[column]+row); //数据
}
tableValueV.add(rowV);
}

JTable jtable=new JTable(tableValueV, columnnameV){
/**
*
*/
private static final long serialVersionUID = 1L;

@Override
public boolean isCellEditable(int row, int column) {//设置表格单元格不可以被编辑
// TODO Auto-generated method stub
return false;
}
};
JScrollPane jsp=new JScrollPane(jtable,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
jsp.setBounds(50, 100, 700, 320);
jtable.setBorder(new LineBorder(Color.gray));//设置表格边框颜色
//jtable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);//关闭表格自动调整功能,不加这个，表格可以自适应滚动条的宽度
jtable.setAutoscrolls(true);
jMenu11.add(jemitem111);
jMenu1.add(jMenu11);
jmenubar.add(jMenu1);
jmenubar.add(jMenu2);


jtext.setEditable(false);
jtext.setBackground(Color.white);
jframe.add(jlabel);
jframe.add(jtext);
jframe.add(jbutton);
jframe.add(upload);
jframe.add(jsp);
jframe.setLayout(null);
jframe.setVisible(true);
jframe.add(jmenubar);
jbutton.addActionListener(this);
upload.addActionListener(this);
jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource().equals(jbutton)){
JFileChooser jfchooser=new JFileChooser("E:\\");
jfchooser.setDialogTitle("选择文件");
int rtn=jfchooser.showOpenDialog(jframe);
if(rtn==JFileChooser.APPROVE_OPTION) {
System.out.println(jfchooser.getSelectedFile().getPath());
String text=jfchooser.getSelectedFile().getPath();
jtext.setText(text);
filename=jfchooser.getSelectedFile().getName();
}
}else if(e.getSource().equals(upload)){
if(!jtext.getText().equals("")){
//开始上传所选择的的文件，获取文件名，文件存放位置
JFileChooser fileChooser = new JFileChooser("D:\\");
fileChooser.setDialogTitle("选择保存路径");
fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
int returnVal = fileChooser.showOpenDialog(fileChooser);
if(returnVal == JFileChooser.APPROVE_OPTION){
String filePath= fileChooser.getSelectedFile().getAbsolutePath();//这个就是你选择的文件夹的路径 }
System.out.println(filePath);
filesavepath=filePath;
try {
FileWriter fw = new FileWriter(new File(filesavepath+"/"+filename));
InputStream is = new FileInputStream(new File(jtext.getText()));
BufferedReader br = new BufferedReader(new InputStreamReader(is,"GBK"));
int ch = 0;
while((ch = br.read())!=-1 ){
//System.out.print((char)ch);
fw.write(ch);
}
fw.flush();
fw.close();
JOptionPane.showMessageDialog(null, "文件上传成功，请到"+filesavepath+"目录下查看！");
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
}else{
JOptionPane.showMessageDialog(null, "请先选择要上传的文件！");
}
}
}

public static void main(String[] args) {
FileUpload fileupload=new FileUpload();
}
}