java传输文件的问题_java吧

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java传输文件的问题

当我客户端与服务器点对点传输时没有问题，但是我服务器用多线程接收就不能完整的接收文件，服务器有两个线程，一个是in.readUTF();接收字符串消息，另一个是in.read(byte[])接收文件转化的byte数组，两个线程都是时时监听，如果我只有一个in.read(byte[])接收文件线程就不会出现问题，现在两个线程报错
java.io.EOFException
at java.io.DataInputStream.readFully(Unknown Source)
at java.io.DataInputStream.readUTF(Unknown Source)
at java.io.DataInputStream.readUTF(Unknown Source)
求大神解释啊

送TA礼物

1楼2014-12-01 19:54回复

public void run(){
byte[] a = new byte[1024];
int nu = 0;
try {
while((nu = in.read(a))!=-1){
System.out.println("nu "+nu);
output.write(a, 0, nu);
}
b = output.toByteArray();
System.out.println("b "+b.length);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
byte2image(b);
}
public void byte2image(byte[] data){
if(data.length<3) return;
try{
FileImageOutputStream imageOutput = new FileImageOutputStream(new File("C:\\Users\\Administrator\\Desktop\\文件接收\\1.jpg"));
imageOutput.write(data, 0, data.length);
imageOutput.close();
System.out.println("Make Picture success,Please find image in " + "C:/Users/Administrator/Desktop");
} catch(Exception ex) {
System.out.println("Exception: " + ex);
ex.printStackTrace();
}
}

2楼2014-12-01 19:55

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public class Send {
public static void main(String[] args){
FileImageInputStream input = null;
try {
Socket s = new Socket("113.251.167.236",6668);
DataOutputStream out = new DataOutputStream(s.getOutputStream());
input = new FileImageInputStream(new File("C:/Users/Administrator/Desktop/文件传输/1.jpg"));
int numBytesRead = 0;
int c = 0;
byte[] a = new byte[1024];
while ((numBytesRead = input.read(a)) != -1) {
System.out.println(numBytesRead);
c = c+numBytesRead;
out.write(a, 0, numBytesRead);
out.flush();
}
out.writeUTF("www");
System.out.println("c "+c);
out.flush();
out.close();
s.close();
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

3楼2014-12-01 19:56

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