socket, nio socket，及xml传递object 方法
1：如何通过socket代理来访问服务端：
String proxyHost = "192.168.204.212";
String proxyPort = "1080";
//通知Java要通过代理进行连接。
System.getProperties().put("socksProxySet","true");
//指定代理所在的机器
System.getProperties().put("socksProxyHost",proxyHost);
//指定代理监听的端口。
System.getProperties().put("socksProxyPort",proxyPort);
String host = "134.01.69.80";
int port = 12086;
System.out.println("connetioning:" + host + ":" + port);
server = new Socket(host, port);
二：老socket传递Object对象：
要传递的对象：
public class Employee implements Serializable {
private int employeeNumber;
private String employeeName;
Employee(int num, String name) {
employeeNumber = num;
employeeName= name;
}
public int getEmployeeNumber() {
return employeeNumber ;
}
public void setEmployeeNumber(int num) {
employeeNumber = num;
}
public String getEmployeeName() {
return employeeName ;
}
public void setEmployeeName(String name) {
employeeName = name;
}
}
client：
public class Client {
public static void main(String[] arg) {
try {
Employee joe = new Employee(150, "Joe");
System.out.println("employeeNumber= " + joe.getEmployeeNumber());
System.out.println("employeeName= " + joe.getEmployeeName());
Socket socketConnection = new Socket("127.0.0.1", 11111);
ObjectOutputStream clientOutputStream = new ObjectOutputStream(
socketConnection.getOutputStream());
ObjectInputStream clientInputStream = new ObjectInputStream(
socketConnection.getInputStream());
clientOutputStream.writeObject(joe);
joe = (Employee) clientInputStream.readObject();
System.out.println("employeeNumber= " + joe.getEmployeeNumber());
System.out.println("employeeName= " + joe.getEmployeeName());
clientOutputStream.close();
clientInputStream.close();
} catch (Exception e) {
System.out.println(e);
}
}
}
server端：
java 代码
public class Server {
public static void main(String[] arg) {
Employee employee = null;
try {
ServerSocket socketConnection = new ServerSocket(11111);
System.out.println("Server Waiting");
Socket pipe = socketConnection.accept();
ObjectInputStream serverInputStream = new ObjectInputStream(pipe
.getInputStream());
ObjectOutputStream serverOutputStream = new ObjectOutputStream(pipe
.getOutputStream());
employee = (Employee) serverInputStream.readObject();
employee.setEmployeeNumber(256);
employee.setEmployeeName("li");
serverOutputStream.writeObject(employee);
serverInputStream.close();
serverOutputStream.close();
} catch (Exception e) {
System.out.println(e);
}
}
}
三：nio socket传递Object：
client：
public class Client {
private String hostname;
private int port;
public Client(String hostname, int port)
{
this.hostname = hostname;
this.port = port;
}
public static void main(String[] args) {
String hostname = "192.168.0.81";
int port = 8234;
Student stu = new Student();
stu.setId(849);
stu.setName("Squall");
Client client = new Client(hostname, port);
try {
client.write(stu);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void write(Object obj) throws IOException {
SocketChannel channel = null;
try {
channel = SocketChannel.open(new InetSocketAddress(hostname, port));
ByteBuffer buf = Client.getByteBuffer(obj);
channel.write(Client.getByteBuffer(obj));
channel.write(Client.getByteBuffer(obj));
} catch (Exception e) {
e.printStackTrace();
} finally {
channel.close();
}
}
public static ByteBuffer getByteBuffer(Object obj) throws IOException
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(bOut);
out.writeObject(obj);
out.flush();
byte[] arr = bOut.toByteArray();
System.out.println("Object in " + arr.length + " bytes");
ByteBuffer bb = ByteBuffer.wrap(arr);
out.close();
return bb;
}
}
server端：
java 代码
public class Server {
public static void main(String[] args) {
System.out.println("in server!");
ServerThread server = new ServerThread();
new Thread(server).start();
}
static class ServerThread implements Runnable {
public void run() {
try {
ServerSocketChannel sc = ServerSocketChannel.open();
ServerSocket s = sc.socket();
s.bind(new InetSocketAddress(8234));
while (true) {
Socket incoming = s.accept();
Runnable r = new GetObjThread(incoming);
Thread t = new Thread(r);
t.start();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
static class GetObjThread implements Runnable {
public GetObjThread(Socket s) {
incoming = s;
}
public void run() {
try {
SocketChannel sc = incoming.getChannel();
ByteBuffer bbIn = ByteBuffer.allocate(1024);
sc.read(bbIn);
sc.close();
bbIn.flip();
ByteArrayInputStream bIn = new ByteArrayInputStream(bbIn
.array());
ObjectInputStream in = new ObjectInputStream(bIn);
Student nStu = (Student) in.readObject();
System.out.println("student id is " + nStu.getId() + "/n"
+ "student name is " + nStu.getName());
} catch (IOException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
private Socket incoming;
}
}
四：备份一个有用的util class：对象序列化，反序列化（序列化对象转byte[],ByteBuffer, byte[]转object：
java 代码
public class ByteUtil {
public static byte[] getBytes(Object obj) throws IOException
{
ByteArrayOutputStream bout = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(bout);
out.writeObject(obj);
out.flush();
byte[] bytes = bout.toByteArray();
bout.close();
out.close();
return bytes;
}
public static Object getObject(byte[] bytes) throws IOException, ClassNotFoundException
{
ByteArrayInputStream bi = new ByteArrayInputStream(bytes);
ObjectInputStream oi = new ObjectInputStream(bi);
Object obj = oi.readObject();
bi.close();
oi.close();
return obj;
}
public static ByteBuffer getByteBuffer(Object obj) throws IOException
{
byte[] bytes = ByteUtil.getBytes(obj);
ByteBuffer buff = ByteBuffer.wrap(bytes);
return buff;
}
}
五：如何通过xml传递Object对象：
可以先把object转成一个byte[]数组，然后用base64编码成一个base64格式的String，放入xml的CDATA中，就可以传了。
接收方，收到该xml后，把CDATA中的String用base64解码为byte[]，进而根据四中的方法，还原为object：
java 代码
public class Base64 {
public static String getEncodedText(byte[] bytes) {
try {
BASE64Encoder encoder = new BASE64Encoder();
String text = encoder.encode(bytes);
return text;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
public static byte[] decode(String src)
{
BASE64Decoder decoder = new BASE64Decoder();
try {
return decoder.decodeBuffer(src);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}
}
public static void main(String[] args) {
String s = "ly89";
byte[] bytes = s.getBytes();
String encode = Base64.getEncodedText(bytes);
System.out.println("the encode string is: " + encode);
byte[] dbytes = Base64.decode(encode);
for (int i = 0; i < bytes.length; i++) {
System.out.println(dbytes[i]);
}
}
}
本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/vvggsky/archive/2007/04/17/1567182.aspx