Applet与Servlet通讯 (片段源码)

Applet与Servlet通讯 (源码) 作者：jdeveloper

Applet source (partly)

...

showStatus(textField1.getText());

URL servlet = new URL(this.getDocumentBase(),"servlet/GetParameterServlet");

URLConnection connection = servlet.openConnection();

connection.setUseCaches(false);

connection.setDoOutput(true);

ByteArrayOutputStream byteStream = new ByteArrayOutputStream(1024);

PrintWriter out = new PrintWriter(byteStream, true);

String postData = "Name=" + URLEncoder.encode(textField1.getText());

out.print(postData);

out.flush();

String lengthString = String.valueOf(byteStream.size());

connection.setRequestProperty("Content-Length", lengthString);

connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

byteStream.writeTo(connection.getOutputStream());

BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()));

textArea1.setText("");

String s;

for(; (s = br.readLine()) != null && s.length() 0; textArea1.appendText(s + "

"));

...

Servlet source

// GetParameterServlet

import Java.io.*;

import javax.servlet.*;

import javax.servlet.http.*;

import java.util.*;

public class GetParameterServlet extends HttpServlet {

public void doGet(HttpServletRequest request,

HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/Html");

PrintWriter out = response.getWriter();

String title = "Reading Request Parameters";

String name = request.getParameter("Name");

out.println(title);

out.println("Hello: " + name );

}

public void doPost(HttpServletRequest request,

HttpServletResponse response)

throws ServletException, IOException {

doGet(request, response);

}

}

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