[英]NotSerializableException when trying to write Serializable object to file
[英]NotSerializableException when sending an serializable object over socket?
我试图通过套接字连接发送自定义对象。 该类实现可序列化,但是在尝试将对象写入套接字时,构造函数仍会引发NotSerializableException
。 我将在下面发布相关代码:
public class serilizableArrayHolder implements Serializable {
private ArrayList<Client> array= null;
public serilizableArrayHolder(ArrayList<Client> array) {
this.array=array;
}
public ArrayList<Client> getArray() {
return array;
}
}
这是我定制的课。 目前,我正在尝试将一个arraylist从服务器发送到客户端,但是稍后我将添加其他信息。 send方法发布在服务器类的下面,发布在下面:
public void sendData(Socket clientSocket){
ObjectOutputStream out;
try {
serilizableArrayHolder temp = new serilizableArrayHolder(clientCollection);
out = new ObjectOutputStream(clientSocket.getOutputStream());
out.writeObject(temp); <---This line generates the error.
out.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
这是我从服务器发送的方法。 clientCollection
是即时通讯尝试发送的arrayList。
整个客户类:
public class Client implements Runnable, Serializable{
public Thread thread = new Thread(this);
private Socket s;
private DataInputStream in;
private DataOutputStream out;
private ObjectOutputStream objOut;
private ServerMain server=null;
private String host=null;
private Client c;
private String userName;
public Client(Socket s, String host, ServerMain server) throws IOException{
c=this;
this.host=host;
this.s=s;
this.server=server;
this.userName=userName;
in= new DataInputStream(s.getInputStream());
out=new DataOutputStream(s.getOutputStream());
objOut=new ObjectOutputStream(s.getOutputStream());
thread.start();
}
public String getClientInfo(){
return host;
}
public String getUserName(){
return userName;
}
public void send(String s){
try {
out.writeUTF(s);
}
catch (IOException e){
}
}
public void run() {
while(true){
try {
String temp = in.readUTF();
if(temp.equals("sendOnline")){
sendOnline();
}
String tempHost=s.getInetAddress().getHostAddress();
server.appendString(tempHost+" Skickade: "+temp+"\n");
}
catch (IOException e) {
String str = s.getInetAddress().getHostName();
server.clientDisconnect(str);
break;
}
}
try {
s.close();
}
catch (IOException e) {
}
}
public void sendOnline(){
serilizableArrayHolder temp = new serilizableArrayHolder(server.getClients());
try {
objOut.writeObject(temp);
objOut.flush();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("Metoden anropas");
}
}
新的堆栈跟踪:
java.io.NotSerializableException: java.io.DataInputStream
Metoden anropas
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1180)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346)
at java.util.ArrayList.writeObject(ArrayList.java:710)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:962)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1480)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346)
at Gesäll.Client.sendOnline(Client.java:83)
at Gesäll.Client.run(Client.java:58)
at java.lang.Thread.run(Thread.java:722)
异常告诉您问题所在。 您的Client
类别无法序列化。 要序列化一个对象,它引用的所有对象(以此类推,等等)也需要可序列化。 如果您不希望序列化参考transient
则可以将其标记为transient
。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.