java中applet和CGI之间的通信

Question

我有applet这样的start（）代码：

public void start() {
        try {
            URL cgiUrl = new URL("http://localhost:8080/cgi_lib/UsersCGI.exe?someText");
            URLConnection con = cgiUrl.openConnection();
            con.setDoOutput(true);
            con.setDoInput(true);
            OutputStream out = con.getOutputStream();
            DataInputStream din = new DataInputStream(con.getInputStream());
            DataOutputStream dout = new DataOutputStream(out);
            dout.writeUTF("Hello");
            String receivedString = din.readUTF();
            this.out=receivedString;
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
        catch (IOException ex){
            ex.printStackTrace();
        }
    }

CGI用java编写并编译成.exe（使用launch4j）：

    public class UsersCGI {
        public static void main(String[] args) {
            System.out.println(Arrays.toString(args));
        }
    }

所以，我有错误：

  

＆＃34; java.io.UTFDataFormatException：字节0和＃34之间格式错误的输入;

在第

行

  

String receivedString = din.readUTF（）;

我做错了什么？