还是这个错误: java.io.FileNotFoundException: (Permission denied) at java.io.RandomAccessFile.open(Native Method) at java.io.RandomAccessFile.<init>(Unknown Source) at java.io.RandomAccessFile.<init>(Unknown Source) at ChatSwing$ActListener.actionPerformed(ChatSwing.java:311) at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.setPressed(Unknown Source) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) at com.jtattoo.plaf.BaseButtonListener.mouseReleased(Unknown Source) at java.awt.Component.processMouseEvent(Unknown Source) at javax.swing.JComponent.processMouseEvent(Unknown Source) at java.awt.Component.processEvent(Unknown Source) at java.awt.Container.processEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source)
谁能解释一下 Permission denied 这是什么错误
RandomAccessFile fileOut = new RandomAccessFile(filePath,"r");我说的错误就在这里 错误信息如上所示 File file = new File(filePath); 你应该把这2个语句倒过来写,因为你不能给randomaccessfile传送一个filepath参数,应该传送file参数
if(e.getSource() == selectFileBtn) {
JFileChooser chooser = new JFileChooser();
int returnVal = chooser.showDialog(null, "请选择要发送的文件");
if(returnVal == JFileChooser.APPROVE_OPTION) {
saveFileName=chooser.getSelectedFile();//获取选择的文件
fileName = saveFileName.getName().toString().trim();//获取文件名
filePath = saveFileName.getAbsolutePath().toString().trim();//获取文件的路径
}
filePath = filePath.replaceAll("\\\\", "\\\\\\\\");
}
//发送文件
if(e.getSource() == sendFileBtn) {
try {
filePath = filePath.replaceAll("\\\\", "\\\\\\\\");
RandomAccessFile fileOut = new RandomAccessFile(filePath,"r");我说的错误就在这里 错误信息如上所示
File file = new File(filePath);
long num = file.length()/buffer.length;
for(int i = 0;i < num+1;i++) {//读满一个包就发送,知道文件内容读取完毕
byte[] buf = new byte[16*1024];
fileOut.read(buf, 0, buf.length);
DatagramPacket p = new DatagramPacket(buf,buf.length
,InetAddress.getByName(friendIpText.getText())
,Integer.valueOf(friendPortText.getText()));
p.setData(buf);
DatagramSocket sockFile = new DatagramSocket();
sockFile.send(p);//向指定IP及端口发送包
sockFile.close();
}
} catch (FileNotFoundException e1) {
e1.printStackTrace();
} catch (NumberFormatException e1) {
e1.printStackTrace();
} catch (UnknownHostException e1) {
e1.printStackTrace();
} catch (IOException e1) {
e1.printStackTrace();
}
}
在选择文件中已经有了
//选择文件
if(e.getSource() == selectFileBtn) {
JFileChooser chooser = new JFileChooser();
int returnVal = chooser.showDialog(null, "请选择要发送的文件");
if(returnVal == JFileChooser.APPROVE_OPTION) {
saveFileName=chooser.getSelectedFile();//获取选择的文件
fileName = saveFileName.getName().toString().trim();//获取文件名
filePath = saveFileName.getAbsolutePath().toString().trim();//获取文件的路径
}
filePath = filePath.replaceAll("\\\\", "\\\\\\\\");
}
//发送文件
if(e.getSource() == sendFileBtn) {
try {
RandomAccessFile fileOut = new RandomAccessFile(filePath,"r");//创建从中读取的随机文件流
File file = new File(filePath);
long num = file.length()/buffer.length;
for(int i = 0;i < num+1;i++) {//读满一个包就发送,知道文件内容读取完毕
byte[] buf = new byte[16*1024];
fileOut.read(buf, 0, buf.length);
DatagramPacket p = new DatagramPacket(buf,buf.length
,InetAddress.getByName(friendIpText.getText())
,Integer.valueOf(friendPortText.getText()));
p.setData(buf);
DatagramSocket sockFile = new DatagramSocket();
sockFile.send(p);//向指定IP及端口发送包
sockFile.close();
}
} catch (FileNotFoundException e1) {
e1.printStackTrace();
} catch (NumberFormatException e1) {
e1.printStackTrace();
} catch (UnknownHostException e1) {
e1.printStackTrace();
} catch (IOException e1) {
e1.printStackTrace();
}
}
String filePath = "";
if(e.getSource() == selectFileBtn) {
JFileChooser chooser = new JFileChooser();
int returnVal = chooser.showDialog(null, "请选择要发送的文件");
if(returnVal == JFileChooser.APPROVE_OPTION) {
filePath = chooser.getSelectedFile().toString();//获取选择的文件
}
}
//发送文件
if(e.getSource() == sendFileBtn) {
try {
RandomAccessFile fileOut = new RandomAccessFile(filePath,"r");//创建从中读取的随机文件流
File file = new File(filePath);
long num = file.length()/buffer.length;
for(int i = 0;i < num+1;i++) {//读满一个包就发送,知道文件内容读取完毕
byte[] buf = new byte[16*1024];
fileOut.read(buf, 0, buf.length);
DatagramPacket p = new DatagramPacket(buf,buf.length
,InetAddress.getByName(friendIpText.getText())
,Integer.valueOf(friendPortText.getText()));
p.setData(buf);
DatagramSocket sockFile = new DatagramSocket();
sockFile.send(p);//向指定IP及端口发送包
sockFile.close();
}
} catch (FileNotFoundException e1) {
e1.printStackTrace();
} catch (NumberFormatException e1) {
e1.printStackTrace();
} catch (UnknownHostException e1) {
e1.printStackTrace();
} catch (IOException e1) {
e1.printStackTrace();
}
}
java.io.FileNotFoundException: (Permission denied)
at java.io.RandomAccessFile.open(Native Method)
at java.io.RandomAccessFile.<init>(Unknown Source)
at java.io.RandomAccessFile.<init>(Unknown Source)
at ChatSwing$ActListener.actionPerformed(ChatSwing.java:311)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at com.jtattoo.plaf.BaseButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
File file = new File(filePath);
你应该把这2个语句倒过来写,因为你不能给randomaccessfile传送一个filepath参数,应该传送file参数