我已经建立了服务器客户端应用程序,其中服务器将文件发送到客户端,客户端将接收它并将其保存在C:/任何地方。 我首先发送一个字符串“文件”,以告诉客户端接收文件,而不是服务器发送文件名和大小到客户端,然后开始发送它。 问题是客户端没有接收文件,虽然它读取循环并获取所有字节但不写入所需的文件对象。请查看我已经显示的客户端代码
以下是服务器代码:
public void run(){
try{
System.out.println("Starting writing file");
objOut.writeObject("File");
objOut.flush();
File f= new File(filePath);
String name= f.getName();
int length =(int) f.length();
objOut.writeObject(name);
objOut.flush();
objOut.writeObject(length);
objOut.flush();
byte[] filebytes = new byte[(int)f.length()];
FileInputStream fin= new FileInputStream(f);
BufferedInputStream bin = new BufferedInputStream(fin);
bin.read(filebytes, 0, filebytes.length);
BufferedOutputStream bout = new BufferedOutputStream(objOut);
bout = new BufferedOutputStream(objOut);
bout.write(filebytes, 0, filebytes.length);
bout.flush();
System.out.println("File completelty sent");
}
catch(Exception ex)
{
System.out.println("error on writing file : "+ex.getMessage());
}
}
以下是客户代码:
while(true){
fobjIn = new ObjectInputStream(fileSock.getInputStream());
String str = (String) fobjIn.readObject();
if(str.equals("File"))
{
System.out.println("Starting receiving file");
ReceiveFile();
}
System.out.println(str);
}
public void ReceiveFile() throws Exception{
String name =(String)fobjIn.readObject();
File f = new File("C:/Temp/" +name);
f.createNewFile();
int length = (int) fobjIn.readObject();
FileOutputStream fout = new FileOutputStream(f);
BufferedOutputStream buffout = new BufferedOutputStream(fout);
byte[] filebyte = new byte[length];
int bytesRead=0,current=0;
bytesRead = fobjIn.read(filebyte, 0, filebyte.length);
do {
bytesRead = fobjIn.read(filebyte, current, (filebyte.length-current));
if(bytesRead > 0) {
current += bytesRead;
System.out.println("writting" + bytesRead);
}
else break;
} while(bytesRead > -1);
^^^^^^^ 乞讨时,他们从循环中走出来 ^^^^^^^^
buffout.write(filebyte, 0 , current);
buffout.flush();
System.out.println("written");
}
答案 0 :(得分:2)
完成发送后,您应该在服务器端关闭流,以便可以通知客户端服务器已完成发送。否则它只会坐在那里等待更多数据。