小编Ber*_*ard的帖子

这是我的节目的图片.所有这些JMenuItem都在一个JFrame中,我为每个JFrame添加了JPanel.当用户单击一个JMenuItem时,所有JPanels都将是不可见的,只有相应的JPanel才能工作.

这是一个好方法吗？我的班级很庞大.添加功能之前是5000行.

如果分开

客户端---发送消息到--->服务器:工作正常!

如果分开

服务器---发送消息到--->客户端:工作正常!

但是当两者在一起时:

客户端---发送消息到--->服务器
服务器---发送消息到--->客户端

什么都行不通!

这是ServerSide:

import java.io.*;
import java.net.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;

public class MyServer
{  
    private final static int port = 8000; 
    private static String hostname = "";
    private static String hostIP ="";
    public static void main(String[] args )
    {  
        ServerSocket serverSocket=null;
        try {
            // get host information
            hostname = InetAddress.getLocalHost().getHostName();
            hostIP = InetAddress.getLocalHost().getHostAddress();
            // display server information
            System.out.println("MyServer started on "+hostname+" with IP: "+hostIP + " on the port number: " …

我正试图通过tcp从客户端程序中读取一个对象.正如您在此行中所看到的,我创建了objectInput:

ObjectInputStream objectInput = new ObjectInputStream(incoming.getInputStream());

然后从其他程序中读取我的输入.它曾经工作正常,直到我做了一些小的改动来清理程序.个人假设我补充说

objectInput.clsoe();

我的问题是,在读取对象后,我应该关闭objectInputStream还是保持不关闭？我应该在使用它之后立即关闭它还是在if块结束时或在程序结束时关闭它？关闭有什么影响？顺便说一句,我已经阅读了密切的文档.

这是错误:

java.io.EOFException
    at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2280)
    at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2749)
    at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:779)
    at java.io.ObjectInputStream.<init>(ObjectInputStream.java:279)
    at Server.ClientWorker.run(MyCollectionServer.java:116)
    at java.lang.Thread.run(Thread.java:680)

这是我的代码:

    public static void main(String[] args) {
        ServerSocket serverSocket = null;
        try 
        {
            serverSocket = new ServerSocket(port);  
        } 
        catch (IOException e) 
                {
            e.printStackTrace();
        }
        while(true)
        {   
            ClientWorker w;
            try
            {   
                w = new ClientWorker(serverSocket.accept());
                Thread t = new Thread(w);
                t.start();
            }
            catch(IOException e)
            {
                e.printStackTrace();
                break;
            }   
        }
    }
}

class ClientWorker implements Runnable
{
.....
    private …

我复制粘贴我的代码和我得到的错误.这很奇怪.我已经标记了我遇到错误的所有行.我甚至无法编译课程.

#ifndef MYRECORD_H
#define MYRECORD_H
#include "MyException.h"
#include <map>

using namespace std;
//Error in next line
using std::vector;

class MyRecord {
public:
    explicit MyRecord(string& id); // I don't want implicit conversion from std::string to MyRecord!
    // Mutator functions - setting of other fields
    // In this version, hardly any of the implementations will actually throw exceptions
    // later validation functions will be added
    void setName(string& aname) throw (MyException);
    void setEmail(string& amail) throw (MyException);
    void setInfo(string& info) throw (MyException);
    void setImage(string& …

我已经下载了一个样本表格,它是这样的:

  <form id="login-user"  method="post" accept-charset="utf-8" action="/home.html" class="simform">
    <div class="sminputs">
      <div class="input full">
        <label class="string optional" for="user-name">Email*</label>
        <input class="string optional" maxlength="255" id="user-email" placeholder="Email" type="email" size="50" />
      </div>
    </div>
    <div class="sminputs">
      <div class="input full">
        <label class="string optional" for="user-pw">Password *</label>
        <input class="string optional" maxlength="255" id="user-pw" placeholder="Password" type="password" size="50" />
                                <span class="hide-password">Show</span>
      </div>
    </div>

    <div class="simform__actions">
      <input class="sumbit" name="commit" type="sumbit" value = "Log in"/>
      <span class="simform__actions-sidetext"><a class="special" role="link" href="#">Forgot your password?<br>Click here</a></span>
    </div> 
  </form>

当我按下提交按钮时它不起作用,它会点击按钮上的文字!但是,当我改变这一行

<input class="sumbit" name="commit" type="sumbit" value = "Log in"/>

至 …

我得到了一点有线警告.我在头文件中定义了这样的NSDate:

@property (strong, nonatomic) NSData *selected;

稍后在.m文件中我尝试获取日期选择器选择的日期:

self.selected = [_datePicker date];

日期选择器的定义:

@property (weak, nonatomic) IBOutlet UIDatePicker *datePicker;

两者都是相同类型的NSDate*.为什么我会收到此警告？