Applet向Servlet传递对象方法-已运行通过

自定义的测试类

public class aData implements Serializable{
? int d=100;
? public aData() {
? }
? public int getD()
? {
??? return this.d;
? }
}

Applet 端程序

??????? try {
??????????? URL url = new URL("http://127.0.0.1:8080/ServletTest");
??????????? URLConnection urlcon = url.openConnection();
??????????? urlcon.setDoOutput(true);
??????????? urlcon.setDoInput(true);
??????????? urlcon.setUseCaches(false);

??????????? urlcon.setRequestProperty("Content-Type",
????????????????????????????????????? "application/x-java-serialized-object");
??????????? OutputStream out = urlcon.getOutputStream();
???????????
??????????? ObjectOutputStream oos = new ObjectOutputStream(out);
??????????? oos.writeObject(new aData());
??????????? oos.flush();
??????????? oos.close();
??????????? urlcon.getHeaderField(0);//这一句非常重要，如果没有此句服务器端没反应
??????? } catch (Exception ex) {
??????????? ex.printStackTrace();
??????? }

Servlet端程序

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import javax.servlet.ServletException;

public class ServletTest extends HttpServlet {
??? private static final String CONTENT_TYPE = "text/html; charset=UTF-8";
??? //Initialize global variables
??? public void init() throws ServletException {
??? }

??? protected void doPost(HttpServletRequest req, HttpServletResponse res) throws
??????????? ServletException, IOException {
??????? ObjectInputStream oin = new ObjectInputStream(req.getInputStream());
??????? aData vo = null;
??????? try {
??????????? vo = (aData) oin.readObject();
??????????? oin.close();
??????? } catch (ClassNotFoundException e) {
??????????? e.printStackTrace();
??????? }
??????? System.out.println("============" + vo.getD());
??? }

??? public void doGet(HttpServletRequest req, HttpServletResponse response) throws
??????????? ServletException, IOException {

??????? response.setContentType("application/x-java-serialized-object");

??????? doPost(req, response);
??? }

??? //Clean up resources
??? public void destroy() {
??? }
}

?